NTCG 1005 JIS 1005 [EIA 0402]
NTCG 1608 JIS 1608 [EIA 0603]
Chip NTC thermistor
Temperature protection device
NTCG series
Temperature Protection Devices
Automotive grade:Corresponding to 125,150°C
March 2017
(2/17)
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Temperature Protection Devices
REMINDERS FOR USING THESE PRODUCTS
Before using these products, be sure to request the delivery specifications.
SAFETY REMINDERS
Please pay sufficient attention to the warnings for safe designing when using this products.
Please pay careful attention to the precautions and follow safe designing practices when using these products.
Incorrect usage may lead to destroyed NTC thermistors and damages or malfunctions with the devices used.
Please use them within the ranges of the ratings and performance provided in the catalog and delivery specifications upon confirming
the environments where they are to be used and installed.
Do not use them outside the operating temperature range.
Do not use them with the ratings or maximum permissible power levels exceeded.
Do not quickly apply 5mW or more of load with the constant-voltage power supply in the NTC thermistor as this may lead to staying in
thermal runaway mode or the red-shorting of chips.
Please be cautious of the applied voltage in thermistors as instruments may malfunction with the lowering of resistance due to self
heating.
With instruments that consumers can touch the thermistors with their hands, please carefully warn them not to touch the thermistors.
Store them in locations where the temperature is 10°C to +40°C and the relative humidity is 75% or below, avoid environments where
there are sudden changes in temperatures, direct sunlight, corrosive gas, grit, or dust, and keep them packed in a manner where no
loading stress is applied in order to avoid deterioration and damage. (please use them within six months.)
When sealing thermistors, please do so upon first considering the type, quantity, hardening conditions, and adhesiveness of the seal-
ing material and confirming its reliability.
Avoid powerful vibrations, impact (such as by dropping), pressure, etc. on thermistors that exceed the prescribed levels.
Do not use them for long periods of time in environments with a relative humidity of over 85%. (this excludes cases where countermea-
sures have been taken.)
Do not use them in the following environments. (this excludes cases where countermeasures have been taken.)
• Corrosive gases (Cl2, NH3, SOx, NOx, etc.)
・Environments with highly conductive substances (electrolytes, water, saltwater, etc.)
・Environments with acid, alkali, or organic solvents
・Dusty areas
Please observe the following precautions when attaching them to substrates as failure to do so may result in destruction or malfunction.
・Do not let the substrates get warped or twisted at any time during the soldering.
・The landing size must be even on both the left and right sides.
・Do not use items that have been dropped or detached.
・Do not allow the adherence of more solder than needed.
Reflow mounting is recommended with NTC thermistors, and not flow (dip) mounting.
Attaching or making corrections with a soldering iron is not recommended as it can lead to troubles such as significant distorting due to
thermal shock or cracking. If a soldering iron must be used, it should be 30W or below with the temperature of the tip at 350°C or
below, and at a maximum of 5 seconds of soldering time. Also, do not let the tip of the soldering iron come in direct contact with the
chips.
Please use a substance such as resin that does not generate hydrogen (H2) when forming insulation film over chips.
Please contact our sales offices when considering the use of the products listed on this catalog for applications, whose performance
and/or quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage
to society, person or property ('specific uses' such as automobiles, airplanes,medical instruments, nuclear devices, etc.) as well as
when considering the use for applications that exceed the range and conditions of this catalog.
Please note that we are not responsible for any damages or losses incurred resulting from the use of these products that exceeds the range
and conditions of this catalog or specific uses.
Please take appropriate measures such as acquiring protective circuits and devices that meet the uses, applications, and conditions of the
instruments and keeping backup circuits.
REMINDERS
(3/17)
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20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
CHARACTERISTICS OF NTC THERMISTORS
NTC(Negative Temperature Coefficient) thermistors are
manufactured from sintered metal oxides. Each thermistor
consists of a combination of two to four of the following materials:
manganese, nickel, cobalt and copper. NTC thermistors are
semiconductor resistors that exhibit decreasing resistance
characteristics with increasing temperature. TDK thermistors have
low thermal time constants which result in extremely high rates of
resistance change to accurately track the temperature.
FEATURES OF NTCG SERIES
The line-up corresponding to 125 °C is expanded.
The line-up corresponding to 150 °C is added.
AEC-Q200 compliant.
Fig.1 R-T Curve : 10kohm@25°C Fig.2 Internal structure of the multilayer chip Thermistors
Overview of the NTCG series
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
1000
100
0.1
1
10
Resistance (kΩ)
–40 0 50 100 150 200
Temperature (°C)
No. Name
①Semiconductor ceramics
②Internal electrode (Pd)
③
Terminal electrode
Ag
④Ni
⑤Sn
②
③
④
⑤
①
RoHS Directive Compliant Product: See the following for more details.https://product.tdk.com/info/en/environment/rohs/index.html
(4/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
APPLICATIONS
Overview of the NTCG series
Use circuit
example
Temperature compensation for various types of
circuits BMS V2X LED
Circuit
example
Resistance
(R25) 2.2k22k4.7k10k68k100k
B constant
(B25/85) 4000K to 4550K 4000K to 4550K 4000K to 4550K 4100K to 4750K 3435K to 4550K 4000K to 4750K 4000K to 4550K
Applicable to
automobile
(125°C)
NTCG1005
series N/A N/A N/A N/A NTCG103JF103
FTDS
NTCG104BF683
FTDSX
NTCG104EF104
FTDSX
NTCG1608
series
NTCG164BH222
JTDS
NTCG164LH223
JTDS
NTCG164BH472
JTDS
NTCG164BH103
JTDS
NTCG163JF103
FTDS N/A NTCG164KF104
FTDS
Applicable to
automobile
(150°C)
NTCG1005
series N/A N/A N/A N/A NTCG103JF103
FT1S N/A NTCG104EF104
FT1SX
NTCG1608
series N/A N/A N/A N/A NTCG163JF103
FT1S N/A NTCG164KF104
FT1S
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
LED
LED
V2X
BMS
NTCR
Vout
NTCR
Vout
NTCR
Vout
Power
Amp
NTCR
Vout
(5/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
PART NUMBER CONSTRUCTION
B constant
B constant calculation formula
B: B constant (K)
T1:Arbitrary temperature (K)
T2:Arbitrary temperature different from T1 (K)
R1:Zero-load resistance value at temperature T1()
R2:Zero-load resistance value at temperature T2()
Each temperature is measured in absolute temperature. 0°C=273.15K
Overview of the NTCG series
NTC G ○○ 3E H 101 □T□□□
Series
name
Structural
classification
shapes and
dimensions
Code
(mm)
B
constant
B
constant
tolerance
(%)
Nominal
resistance
()
Nominal
resistance
tolerance
(%)
Packaging
style TDK internal code
NTC
thermistor
G
Multilayer
internal
electroded
chip type
NTC thermistor
(Pb free type)
10 1005 F ±1 300 30 D ±0.5 TTaping DS 125°C vehicle response
B constant: 25/85°C
16 1608 H ±3 101 100 F ±1 BBulk DSX 125°C vehicle response
B constant: 25/50°C
EIA 102 1000
(1k)H±3 1S 150°C vehicle response
B constant: 25/85°C
103 10000
(10k)J±5 1SX 150°C vehicle response
B constant: 25/50°C
B constant(K)
2A 2000 to 2050 3A 3000 to 3050 4A 4000 to 4050
2B 2051 to 2100 3B 3051 to 3100 4B 4051 to 4100
2C 2101 to 2150 3C 3101 to 3150 4C 4101 to 4150
2E 2201 to 2250 3E 3201 to 3250 4E 4201 to 4250
2F 2251 to 2300 3F 3251 to 3300 4F 4251 to 4300
2J 2401 to 2450 3J 3401 to 3450 4J 4401 to 4450
2K 2451 to 2500 3K 3451 to 3500 4K 4451 to 4500
2L 2501 to 2550 3L 3501 to 3550 4L 4501 to 4550
2N 2601 to 2650 3N 3601 to 3650 4N 4601 to 4650
2Q 2701 to 2750 3Q 3701 to 3750 4Q 4701 to 4750
2S 2801 to 2850 3S 3801 to 3850 4S 4801 to 4850
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Dimensions in mm
Shape symbol (JIS) LWTL1, L2
1005 1.00±0.05 0.50±0.05 0.50±0.05 0.1min
1608 1.60±0.10 0.80±0.10 0.80±0.10 0.2min
InR1–InR2
(1/T1)–(1/T2)
B=
(6/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
125°C RESPONSE COUNTERPARTS
150°C RESPONSE COUNTERPARTS
RATINGS 125°C RESPONSE COUNTERPARTS
1 Maximumratedpower: Maximum power: at rated temperature (25°C), maximum power that can be applied continuously
2 Dissipation factors: powered that it is equivalent that be increased in self-heating by load power thermistor at 1°C temperature
RATINGS 150°C RESPONSE COUNTERPARTS
1 Maximumratedpower: Maximum power: at rated temperature (25°C), maximum power that can be applied continuously
2 Dissipation factors: powered that it is equivalent that be increased in self-heating by load power thermistor at 1°C temperature
Characteristic map of NTCG series
Resistan
ce
Dimensi
ons
Thickness
(mm)
B constant Catalog number
[25/ 85°C] [25/ 50°C]
Resistance tolerance : ± 0.5% Resistance tolerance : ± 1% Resistance tolerance : ± 3% Resistance tolerance : ± 5%
1001608 0.8±0.1 3,250K 3,244K NTCG163EH101HTDS
2.2k1608 0.8±0.1 4,100K 4,096K NTCG164BH222JTDS
4.7k1608 0.8±0.1 4,100K 4,067K NTCG164BH472JTDS
10k
1005 0.5±0.05 3,435K 3,380K NTCG103JX103DTDS NTCG103JF103FTDS NTCG103JF103HTDS NTCG103JF103JTDS
1608 0.8±0.1 3,435K 3,380K NTCG163JX103DTDS NTCG163JF103FTDS NTCG163JF103HTDS
4,100K 4,067K NTCG163JH103HTDS NTCG164BH103JTDS
22k1005 0.5±0.05 4,550K 4,485K NTCG104LH223JTDS
1608 0.8±0.1 4,550K 4,485K NTCG164LH223JTDS
47k1005 0.5±0.05 4,550K 4,485K NTCG104LH473JTDS
1608 0.8±0.1 4,550K 4,485K NTCG164LH473HTDS NTCG164LH473JTDS
68k1005 0.5±0.05 4,150K 4,085K NTCG104BF683FTDSX
100k
1005 0.5±0.05 4,308K 4,250K NTCG104EF104FTDSX
4,550K 4,485K NTCG104LH104JTDS
1608 0.8±0.1 4,485K 4,419K NTCG164KF104FTDS
4,550K 4,485K NTCG164LH104JTDS
150k1005 0.5±0.05 4,550K 4,485K NTCG104LH154JTDS
1608 0.8±0.1 4,550K 4,485K NTCG164LH154JTDS
Resistan
ce
Dimensi
ons
Thickness
(mm)
B constant Catalog number
[25/ 85°C] [25/ 50°C]
Resistance tolerance : ± 0.5% Resistance tolerance : ± 1% Resistance tolerance : ± 3% Resistance tolerance : ± 5%
10k1005 0.5 ± 0.05 3,435 K 3,380 K NTCG103JF103FT1S
1608 0.8 ± 0.1 3,435 K 3,380 K NTCG163JX103DT1S NTCG163JF103FT1S
100k1005 0.5 ± 0.05 4,308 K 4,250 K NTCG104EF104FT1SX
1608 0.8 ± 0.1 4,550 K 4,485 K NTCG164KF104FT1S
Size mm 1005 1608
Maximumratedpower(25°C)1mW 100 100
Dissipationfactors(25°C)2mW/°C 1 1
Size mm 1005 1608
Maximumratedpower(25°C)1mW 125 125
Dissipationfactors(25°C)2mW/°C 1 1
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
(7/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
SHAPE & DIMENSIONS RECOMMENDED LAND PATTERN
125°C RESPONSE COUNTERPARTS（OPERATING TEMPERATURE RANGE：–40 to 125°C）
150°C RESPONSE COUNTERPARTS（OPERATING TEMPERATURE RANGE：–40 to 150°C）
NTCG series 1005 type
Part No. Resistance
[25°C]
()
Resistance
tolerance
B constant
[25/50°C]
(K)
B constant
[25/75°C]
(K)
B constant
[25/85°C]
(K)
B constant
[25/100°C]
(K)
B constant
tolerance
Permissible
operating
current
[25°C]
(mA)
NTCG103JF103FTDS 10,000 ±1% 3380 3422 3435 3453 ±1% 0.31
NTCG103JF103HTDS 10,000 ±3% 3380 3422 3435 3453 ±1% 0.31
NTCG103JF103JTDS 10,000 ±5% 3380 3422 3435 3453 ±1% 0.31
NTCG103JX103DTDS 10,000 ±0.5% 3380 3422 3435 3453 ±0.7% 0.31
NTCG104LH223JTDS 22,000 ±5% 4485 4533 4550 4573 ±3% 0.21
NTCG104LH473JTDS 47,000 ±5% 4485 4533 4550 4573 ±3% 0.14
NTCG104BF683FTDSX 68,000 ±1% 4085 4134 4150 4172 ±1% 0.12
NTCG104EF104FTDSX 100,000 ±1% 4250 4293 4308 4327 ±1% 0.10
NTCG104LH104JTDS 100,000 ±5% 4485 4533 4550 4573 ±3% 0.10
NTCG104LH154JTDS 150,000 ±5% 4485 4533 4550 4573 ±3% 0.08
Part No. Resistance
[25°C]
()
Resistance
tolerance
B constant
[25/50°C]
(K)
B constant
[25/75°C]
(K)
B constant
[25/85°C]
(K)
B constant
[25/100°C]
(K)
B constant
tolerance
Permissible
operating
current
[25°C]
(mA)
NTCG103JF103FT1S 10,000 ±1% 3380 3422 3435 3453 ±1% 0.31
NTCG104EF104FT1SX 100,000 ±1% 4250 4293 4308 4327 ±1% 0.10
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Dimensions in mm
1±0.05
0.5±0.050.5±0.05
Electrode material
Internal:Pd
External:Ag/Ni/Sn
0.1 min.
0.4 to 0.6
0.3 to 0.5 0.35 to 0.450.35 to 0.45
(8/17)
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20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
SHAPE & DIMENSIONS RECOMMENDED LAND PATTERN
125°C RESPONSE COUNTERPARTS（OPERATING TEMPERATURE RANGE：–40 to 125°C）
150°C RESPONSE COUNTERPARTS（OPERATING TEMPERATURE RANGE：–40 to 150°C）
NTCG series 1608 type
Part No. Resistance
[25°C]
()
Resistance
tolerance
B constant
[25/50°C]
(K)
B constant
[25/75°C]
(K)
B constant
[25/85°C]
(K)
B constant
[25/100°C]
(K)
B constant
tolerance
Permissible
operating
current
[25°C]
(mA)
NTCG163EH101HTDS 100 ±3% 3244 3249 3250 3251 ±3% 3.16
NTCG164BH222JTDS 2,200 ±5% 4096 4100 4100 4100 ±3% 0.67
NTCG164BH472JTDS 4,700 ±5% 4067 4092 4100 4110 ±3% 0.46
NTCG163JF103FTDS 10,000 ±1% 3380 3422 3435 3453 ±1% 0.31
NTCG163JF103HTDS 10,000 ±3% 3380 3422 3435 3453 ±1% 0.31
NTCG163JH103HTDS 10,000 ±3% 3380 3422 3435 3453 ±3% 0.31
NTCG163JX103DTDS 10,000 ±0.5% 3380 3422 3435 3453 ±0.7% 0.31
NTCG164BH103JTDS 10,000 ±5% 4067 4092 4100 4110 ±3% 0.31
NTCG164LH223JTDS 22,000 ±5% 4485 4533 4550 4573 ±3% 0.21
NTCG164LH473HTDS 47,000 ±3% 4485 4533 4550 4573 ±3% 0.14
NTCG164LH473JTDS 47,000 ±5% 4485 4533 4550 4573 ±3% 0.14
NTCG164KF104FTDS 100,000 ±1% 4419 4468 4485 4509 ±1% 0.10
NTCG164LH104JTDS 100,000 ±5% 4485 4533 4550 4573 ±3% 0.10
NTCG164LH154JTDS 150,000 ±5% 4485 4533 4550 4573 ±3% 0.08
Part No. Resistance
[25°C]
()
Resistance
tolerance
B constant
[25/50°C]
(K)
B constant
[25/75°C]
(K)
B constant
[25/85°C]
(K)
B constant
[25/100°C]
(K)
B constant
tolerance
Permissible
operating
current
[25°C]
(mA)
NTCG163JF103FT1S 10,000 ±1% 3380 3422 3435 3453 ±1% 0.31
NTCG163JX103DT1S 10,000 ±0.5% 3380 3422 3435 3453 ±0.7% 0.31
NTCG164KF104FT1S 100,000 ±1% 4419 4468 4485 4509 ±1% 0.10
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Dimensions in mm
1.6±0.1
0.8±0.10.8±0.1
Electrode material
Internal:Pd
External:Ag/Ni/Sn
0.2 min.
0.6 to 0.8
0.6 to 0.8 0.6 to 0.80.6 to 0.8
(9/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
RT CONVERSION TABLE: 100 to 22k
＊The ends "1S ○," refer to 150°C divisions
NTCG series RT table
Part No.
NTCG
□□
3E
□
101 to NTCG
□□
4B
□
222 to NTCG
□□
4B
□
472 to NTCG
□□
3J
□
103 to NTCG
□□
4B
□
103 to NTCG
□□
4L
□
223 to
Resistance 1002.2 k4.7 k10 k10 k22 k
B constant(25/85°C) 3250 4100 4100 3435 4100 4550
B constant(25/50°C) 3244 4096 4067 3380 4067 4485
temperature
(°C)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
–40 1.96 91.91 180.7 188.5 384.4 1120
–35 1.48 64.79 128.5 144.3 273.4 780.9
–30 1.13 46.23 92.51 111.3 196.8 550.8
–25 0.87 33.37 67.35 86.6 143.3 392.7
–20 0.68 24.36 49.56 67.8 105.4 282.9
–15 0.53 17.97 36.84 53.46 78.37 205.8
–10 0.42 13.39 27.65 42.45 58.83 151.1
–5 0.33 10.08 20.94 33.93 44.56 112.0
0 0.269 7.655 16.01 27.28 34.06 83.71
50.218 5.868 12.34 22.07 26.25 63.10
10 0.177 4.536 9.583 17.96 20.39 47.94
15 0.146 3.536 7.503 14.70 15.96 36.71
20 0.120 2.779 5.917 12.09 12.59 28.32
25 0.100 2.200 4.700 10.00 10.00 22.00
30 0.084 1.755 3.758 8.31 7.997 17.21
35 0.070 1.410 3.025 6.94 6.437 13.55
40 0.059 1.140 2.450 5.826 5.213 10.74
45 0.050 0.928 1.996 4.911 4.248 8.565
50 0.043 0.760 1.636 4.158 3.481 6.871
55 0.037 0.626 1.348 3.536 2.869 5.543
60 0.032 0.519 1.117 3.019 2.377 4.497
65 0.028 0.433 0.930 2.588 1.979 3.668
70 0.024 0.363 0.779 2.227 1.657 3.007
75 0.021 0.305 0.655 1.924 1.393 2.478
80 0.018 0.258 0.553 1.668 1.177 2.052
85 0.016 0.220 0.469 1.451 0.999 1.707
90 0.014 0.188 0.400 1.267 0.851 1.426
95 0.013 0.161 0.342 1.110 0.729 1.197
100 0.011 0.139 0.294 0.975 0.626 1.009
105 0.010 0.120 0.254 0.860 0.540 0.853
110 0.009 0.104 0.220 0.760 0.468 0.725
115 0.008 0.091 0.191 0.674 0.406 0.618
120 0.007 0.079 0.166 0.599 0.354 0.529
125 0.006 0.069 0.146 0.534 0.310 0.454
130———0.478——
135 ———0.428 — —
140———0.385——
145 ———0.346 — —
150———0.313——
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
(10/17)
Temperature Protection Devices
20170307 / tpd_automotive_ntc-thermistor_ntcg_en.fm
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
RT CONVERSION TABLE: 47k to 150k
＊The ends "1S ○," refer to 150°C divisions
NTCG series RT table
Part No.
NTCG
□□
4L
□
473 to NTCG
□□
4B
□
683 to NTCG
□□
4K
□
104 to NTCG
□□
4E
□
104 to NTCG
□□
4L
□
104 to NTCG
□□
4L
□
154 to
Resistance 47 k68 k100 k100 k100 k150 k
B constant(25/85°C) 4550 4150 4485 4308 4550 4550
B constant(25/50°C) 4485 4085 4419 4250 4485 4485
temperature
(°C)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
Resistance
(k)
–40 2392 2409 4864 4251 5089 7634
–35 1668 1719 3400 3005 3549 5324
–30 1177 1246 2405 2149 2503 3755
–25 838.9 916.0 1720 1554 1785 2677
–20 604.3 681.0 1243 1135 1286 1929
–15 439.6 511.4 907.6 837.8 935.3 1403
–10 322.8 387.4 669.0 624.1 686.9 1030
–5 239.2 295.9 497.6 469.1 509.0 763.5
0 178.8 227.7 373.4 355.6 380.5 570.7
5134.8 176.5 282.5 271.8 286.8 430.2
10 102.4 137.7 215.5 209.4 217.9 326.9
15 78.42 108.2 165.6 162.5 166.9 250.3
20 60.50 85.51 128.2 127.0 128.7 193.1
25 47.00 68.00 100.0 100.0 100.0 150.0
30 36.77 54.40 78.51 79.23 78.23 117.3
35 28.95 43.77 62.05 63.18 61.60 92.40
40 22.95 35.41 49.34 50.68 48.82 73.23
45 18.30 28.81 39.48 40.90 38.93 58.40
50 14.68 23.56 31.77 33.19 31.23 46.84
55 11.84 19.37 25.71 27.09 25.20 37.79
60 9.607 16.00 20.92 22.22 20.44 30.66
65 7.836 13.28 17.12 18.32 16.67 25.01
70 6.425 11.08 14.07 15.18 13.67 20.50
75 5.294 9.284 11.62 12.64 11.26 16.89
80 4.383 7.814 9.649 10.58 9.325 13.99
85 3.646 6.604 8.046 8.887 7.757 11.64
90 3.046 5.604 6.738 7.500 6.482 9.722
95 2.557 4.775 5.667 6.357 5.440 8.159
100 2.155 4.083 4.786 5.410 4.584 6.876
105 1.823 3.505 4.057 4.623 3.879 5.819
110 1.549 3.019 3.453 3.966 3.295 4.943
115 1.321 2.609 2.950 3.415 2.810 4.215
120 1.130 2.262 2.529 2.952 2.405 3.607
125 0.971 1.967 2.176 2.561 2.066 3.098
130 — — 1.878 2.229 — —
135 — — 1.626 1.947 — —
140 — — 1.412 1.707 — —
145 — — 1.230 1.501 — —
150 — — 1.075 1.324 — —
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
(11/17)
Temperature Protection Devices
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NTC Thermistors
Automotive grade:Corresponding to 125,150°C
BOARD DESIGN
When attached to NTC substrate thermistor, amount of silver used
(fillet size) has direct impact on NTC thermistor after mounting.
Thus, sufficient consideration is necessary.
Set of land dimensions
(1) As the stress rises in the NTC thermistor owing to the increase
in silver, breakage and cracks will occur. Cause including crack, as
caution on board land design, configure the shape and dimensions
so that the amount of silver is appropriate.
If you installed 2 or more parts in the Common Land, separated by
a solder resist and special land of each component.
Dimensions shape
(2) When peak levels panning-at soldering is excessive, by solder
contraction stress, mechanical-thermal stress causes a Yasuku
chip crack.
In addition, when the peak level is underestimated, terminal
electrode fixed strength is insufficient. This causes chip dropouts
and may affect circuit reliability.
Representative example of the panning of peak levels is shown in
the following.
Recommended silver dose
Case and suggested protocol want to avoid
Attention in the board design
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Shape symbol Symbol
ABC
1005 0.30 to 0.50 0.35 to 0.45 0.4 to 0.6
1608 0.6 to 0.8 0.6 to 0.8 0.6 to 0.8
AB
C
Soldervolume
overload
Solder stress is increased,
and it is easy for a crack to
form.
Decentsolder
volume
Soldervolume
deficit
Fixed strength is weak, and
there is connection a
problem and risk of loss.
Example Cases to avoid Improvement example
(land division)
Lead wire and land
of part discrete
doubles up
Arrangements in
the vicinity
Arrangements of
chip component's
companion
Mostlargeservingamount
Minimumprimeamount
Solder
Chip
Leads
PCB
Solder resist
Leads
Solder
(ground solder)
Chassis
L1
Solder resist
L2 L2>L1
Land
Land
Excess solder
Missing solder
Solder resist
(12/17)
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NTC Thermistors
Automotive grade:Corresponding to 125,150°C
Arrangements of components
(1) I was based on camber of substrate and suggested protocol of
NTC thermistor arrangement, as stress does not join to the utmost
is shown in following.
(2) In payment near by board, depending on mount position of
NTC PTC, as mechanical stress varies, please refer to the
following diagram.
The order of A > B = C > D > E eases the stress.
Attention in the board design
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Substrate for flexural stress
Adverse events
Substrate for flexural stress
Good example
Direction of
surface solder
Solder the mountain fold as a
top.
Solder the mountain fold as a
bottom.
Chip
arrangements
(direction)
Mounted vertically to the
perforation and slit.
Mounted horizontally to the
perforation and slit.
Distance from
perforation and
slit portion
Close location is
disadvantageous of
perforation and slit.
It is an advantage so distant
location away places the
perforation and slit.
Perforation or slit
Perforation or slit
Perforation or slit
Perforation or slit
L1
(L1<L2)
L2
(L1<L2)
B
ED
A
C
Slit
Perforation
(13/17)
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NTC Thermistors
Automotive grade:Corresponding to 125,150°C
APPLICATION TO BOARD
Mounting head pressure
Under suction nozzle if dead point too, during implementation,
excessive force joins of NTC thermistor low, as cause causes of
crack, please use with reference to something about following.
1) Being set to top surface of substrate so that under suction nozzle
as for dead center, substrate does not bend back, and adjust,
please.
2) Nozzle pressure at implementation is 0.1 to 0.3 N in static load,
please.
3) Substrate fixes up back surface of substrate with support pin in
impact of suction nozzle to wely deflection to the utmost, and
substrate hold deflection, please.
A representative example is shown in the following.
Mechanical shock that, if positioning your nail to wear, ragged edge
of positionings, participates in NTC thermistor are locally, and NTC
thermistor, as there is possibility of crack generated, cut the closed
positioning, and maintenance and inspection, and, exchange of
manage dimensions and position nail periodically, please.
SOLDERING
Significant impact is possible on the performance of NTC thermistor,
flux checks something about follow, please use.
(1) Flux uses one with 0.1wt % (Cl conversion) or less halide
substance contains amounts, please. In addition, do not do this with
strongly acidic objects.
(2) Flux during is soldered (2) NTC substrate thermistor is applied
the smalleset amount necessary, please.
(3) If Used soluble flux, perform thorough wash particularly, please.
Reflow temperature profile
SOLDERING IRON
(1) The tip temperature and also by (1) types of soldering irons, the
size of the substrate, and the geometry of the land pattern.Being
earlier, but when as there is possibility that crack occurs in the heat
anderson impaction, point soldering iron temperature is high, please
do solder work within the following conditions.
(2) Direct iron tip is in contact with the (2) NTC thermistor body, and
the strain owing to thermal shock in particular grows even if a crack
is generated. Therefore, please do not touch it directly to the terminal
electrodes.
Attention on the mounting
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
Cases to avoid Recommended case
Single-sided
mounting
Double-sided
mounting
Crack
Support pin
Solder peeling Crack
Support pin
Item
Specification
for eutectic
mixture solder
For lead-free
solder
Preheating temperature 160 to 180°C 150 to 180°C
Solder melting temperature 200°C 230°C
Maximum temperature 240°C max．260°C max.
Preheating time 100s max. 120s max.
Time to reach higher than the
solder melting temperature 30s max. 40s max.
number of possible reflow cycles 2 max. 2 max.
Temperature
of iron tips
（°C）
Wattage
（W）
Pallet point
shape
（mm）
Soldering time
(Second) Frequency
350max. 20max. ø3.0max. 5 max.
Within each
terminal once
(Within total of
twice)
Natural
cooling
t3
t1
Preheating
t2
Soldering
T3 T3
T4
T2
T1
t:
Time
Peak
T:
Temperature
(14/17)
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
NTC Thermistors
Automotive grade:Corresponding to 125,150°C
CLEANING
(1) If cleaning liquid is inappropriate, residues and other foreign
body of fluxes builds up on NTC PTC surface, and can degrade the
performance of NTC thermistor (particularly the insulation
resistance).
(2) Wash conditions may compromise performance of NTC
thermistor if they are improper (wash due, wash excess).
2-1) For wash due
(a)By substance of a system in flux residue halide, metal including
terminal electrodes may experience corrosion.
(b)Substance of a system in flux residue halide builds up on NTC
PTC surface, and reduces the insulation resistance.
(c) Soluble flux makes comparisons of colophony series flux, and
there is event with trends of significant (1) and(2).
2-2) For excess wash
(1) Owing to lavage, NTC PTC surface deteriorates, and reduces
performance of NTC thermistor.
(2) In ultrasonography, when output is passed, substrate resonates
size, and crack occurs in body and sprang of NTC thermistor in
vibration of substrate. Since this may reduce the strength of the
terminal electrode, please note the following conditions.
Output Ultrasound output
Frequency Ultrasonic frequency
Cleaning time Ultrasound cleaning time
2-3) Concentration including halogen that when cleaning liquid to
pollution, when you released is higher, and may cause similar of
results into wash due.
SUBSTRATE HANDLING AFTER COMPONENT
MOUNTING
(1) When substrate is divided, a flexible so that show in following
diagram to substrate, and is given by stress including twist, as there
is possibility that crack occurs of NTC thermistor, please check that
stress is within acceptable limits.
(2) During each substrate operational check, push pressure with
contact failure of check pin of boards checkers of check pin may be
toned up to be prevented. As substrate is bent under loading, NTC
thermistor is broken owing to stress. There is also the possibility that
solder on the terminal electrode will peel off. Follow the diagram for
reference, and check that the substrate bends, please.
SINGLE-PART COMPONENT HANDLING
(1) To drop impact, as there is possibility that breakage and crack is
entered, do not NTC thermistor that(1) NTC thermistor falls.
(2) At stacking storage after implementation and treatment of
substrate, corner of boards is regarded as NTC thermistor. Please
be careful, as there is the possibility that breakage and cracks will
occur on impact.
Attention after mounting
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
BendsTwist
Item Cases to avoid Recommended case
Substrate sags
Peeling
Check pin
Check pin
Support pin
Floor
Crack
Board
Crack
(15/17)
Temperature Protection Devices
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NTC Thermistors
Automotive grade:Corresponding to 125,150°C
REEL DIMENSIONS PACKAGE QUANTITY, PRODUCT WEIGHT
TAPE DIMENSIONS
Packaging style
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
ø180±2.0
2.0±0.5
ø13±0.2
ø21±0.8
Dimensions in mm
0.8
ø60min.
14.0max.
9.0max.
Type Package quantity Individual weight
(pieces/reel) (mg)
NTCG10 10,000 2.5
NTCG16 4,000 5.0
Dimensions in mm
Ty p e A B P1 T
NTCG10 0.65+0.05/–0.1 1.15+0.05/–0.1 2±0.05 0.65max.
NTCG16 1.1±0.2 1.9±0.2 4±0.1 1.1max.
4.0±0.12.0±0.05
B
A P1
8.0±0.3
1.75±0.1
3.5±0.05
T
1.5 +0.1
0
Dimensions in mm
160min. Taping 200min.
300min.
Drawing direction
(16/17)
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NTC Thermistors
Automotive grade:Corresponding to 125,150°C
INITIAL RESISTANCE
Thermistor resistance is a function of absolute temperature as indicated by the following relationship:
............................................................ (1)
Here R0, R(k) are the respective resistance values when the surrounding temperature is T0, T(K). B is the thermistor constant(B con-
stant below).
B CONSTANT
The B constant is found from the following equation:
....................................................... (2)
This B characteristic is indicated by the slope of the linear plot of log R-1/T inverse absolute temperature.
The B constant value is generally in the vicinity of 2500K to 5000K. B constant values of 3000K to 4000K are frequently used for measure-
ments.
Resistance-temperature characteristics (Fig.1)
TEMPERATURE COEFFICIENT
The relationship between temperature coefficient
and B becomes:
............................................. (3)
The negative sign of the temperature coefficient indicates that the temperature coefficient decreases as both thermistor resistance and
temperature rise. If B is taken as 3400K, the temperature coefficient found at 20°C (293.15K) becomes –4%/°C.
Description and definition of terms
Product compatible with RoHS directive
Compatible with lead-free solders
AEC-Q200
R=R0 •
expB 1
T
1
T0
–
( )
B= 1
T
1
T0
–
2.3026(logR–logR0)
100
10
1
Resistance(kΩ)
1.4
450 400 350 300 250 200 150 100
1.6 1.8 2 2.2 2.4 2.6 2.8 3
×10
3
(K)
1
T
3.3kΩ/100˚C
20kΩ/200˚C
Temperature(˚C)
= • = –
100(%/°C)
1
R
B
T2
dR
dT
(17/17)
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HEAT DISSIPATION COEFFICIENT
Temperature rises due to thermal energy formed as electrical current flows through the thermistor. The thermistor temperature T0 is then
related to the surrounding temperature Ta and the electrical input W:
W=k(T0–Ta)=V•I(mW) ............................................................ (4)
.............................................................. (5)
This k value is the heat dissipation coefficient, which represents the additional electrical power (mW/°C) needed to raise the thermistor
temperature by 1°C. This heat dissipation coefficient varies with changes in the measurement and environmental conditions. When a
thermistor is used for temperature measurement, it is naturally important to lower the applied electrical current as much as possible in
order to reduce measurement error resulting from self heating.
VOLTAGE - CURRENT CHARACTERISTIC
The voltage - current characteristic indicates the drop in voltage as electrical current through the thermistor is gradually increased.
Voltage-current characteristics (Fig.2)
HEATING TIME CONSTANT
The time period required to heat up a thermistor from a certain temperature T0 over a target temperature rise is called the heating time
constant. Various types of heating time constants are indicated by the symbols shown in Table 1 as determined by the percent change
from T0 toward the target temperature. The standard change is typically taken to be 63.2%.
Thermal time constants (Fig.3)
Table 1 Heating time constant and temperature change ratio
PERMISSIBLE OPERATING CURRENT
This is the maximum load current limit below 1°C temperature rise due to thermistor self-heating.
It's possible to express it in the following system.
Maximum allowed current [mA] ＝ √（Heat dissipation constant[mW/°C] ÷ Resistance[]
Code Rate of change (%) for T0 -Ta
63.2
286.5
395.0
498.2
599.4
699.8
799.9
k=
(mW/°C)
W
T0–Ta
100
10
1
Voltage(V)
0.1 1 10 100
Current(mA)
Ta=25˚C(in still air)
No.1
2
3
4
5
5kΩ
10kΩ
20kΩ
50kΩ
100kΩ
5
4
2
1
3
70
60
40
30
50
20
0
10
Temperature(˚C)
τ2τ3τ4τ5τ6τ7τ
Heating
Cooling
T
0
Th
Tc
Room temperature Ta
(T
0
–Ta)
×0.632
(T
0
–Ta)
×0.368
