Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
Metal Film Fusing Resistors
Type: ERQA
ERQZ
(
0.25 W, 0.5 W, 1 W, 2 W coating type)
nFeatures
lAccurate fusibility
The accurate fusibility is applicable to safety circuits in a wide range of electronic sets
lSmall in Size, light in weight
Small in size and light in weight can easily realize to save a PWB space of sets
lUniform Quality
An exclusive automated process developed, built and used only by Matsushita and severe quality control sys-
tem results in uniform quality and consistent performance in realiability
lFlame retardant
The exclusively formulated silicon insulative material ensure highly evaluated flame-retardant performance
lReference Standard
EIAJ RC-2125
nConstruction and Materials
Metal alloy film
Spiraling turns
Ceramic core
End cap
Lead wire
Insulative lacquer
Marking
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
nExplanation of Part Numbers
The above example shows a standard Metal Film Fusing Resistors, 2 W power rating, resistance value of 100 W, tolerance of ±5 %, and package of
standard bulk packing.
nRatings
Type
Power
Rating
at 70 ¡C
(W)
Maximum
Open
Circuit
Voltage(1)
(V)
Maximum
Overload
Voltage
Dielectric
With-
standing
Voltage
(V)
Resistance
Tolerance
(%)
Resistance
Range (W)
min. max.
Standard
Resistance
Values
Marking
Method
on Body
Power Derating Curve
For resistors operated in ambient temperatures above
70 ¡C, power rating shall be derated in accordance
with the right figure.
Mass
(Weight)
[g/pc.]
E
1
R
2
Q
3 4
2
5
A
6
B
7
J
8
1
9
0
10
1
11
Product Code Power Rating at
70 ¡C amb.
14
12
0.25 W
0.5 W
Special Feature
A
Z
Standard
Less than 2
W
Resistance
Tolerance
J±5%
Resistance Value
The first two digits are
significant figures of
resistance and the third
one denotes number of
zeros following.Decimal
point is expressed by R as
2.2=2R2.
Suffix for Packaging and/or
Cut & Formed Leads
Nil
P
PáááS
E
WáááE
Std.bulk packing
P type cut & formed
PáááS type cut & formed
Radial Taped & Box
Radial Taped & Box
12
Metal Film
Fusing Resistors
1
2
1W
2W AB
Z
Standard
Less than 2
W
T.C.R.
[´10Ð6/ûC
(ppm/ûC)]
120
100
80
60
40
20
0
Ð60 Ð40 Ð20 0 20 40 60 80 100 120 140 160 180 200 220
Ambient temperature (ûC)
Rated load (%)
Ð30 ûC 70 ûC
150 ûC
130 ûC
ERQ14
ERQ12
ERQ1
ERQ2
(1) Maximum Open Circuit Voltage: Referring to the maximum value of the voltage applied between terminals of the resistor when the
resistor is opened in an electric circuit 1000 times power rating or voltage specified above whichever less is regarded as the maximum open
circuit voltage.
(2) Rated Continuous Working Voltage (RCWV) shall be determined from RCWV=ÃPower Rating ´Resistance Value
ERQ14Z 0.25 200
AC 350
J (±5) 1.0 1.8 ±350 E24 Color 0.24
ERQ14A 2.0 470 code
(0.53 lbs.)
ERQ12Z 0.5 250
AC 350
J (±5) 1.0 1.8 ±350 E24 Color 0.32
ERQ12A 3 times of 2.0 560 code
(0.71 lbs.)
ERQ1Z 1 250 rated AC 600 J (±5) 1.0 1.8 ±350 E24 Stamp 0.64
ERQ1AB voltage(2) 2.0 560
(1.41 lbs.)
ERQ2Z 2 250
AC 1000
J (±5) 1.0 1.8 ±350 E24 Stamp 1.52
ERQ2AB 2.0 560
(3.35 lbs.)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
nDimensions in mm (not to scale)
Type Dimensions (mm)
LfDkfd
ERQ14 6.3+1.5 2.3±0.5 30.0±3.0 0.65±0.05
ERQ12 9.0+1.5 2.8±0.5 30.0±3.0 0.65±0.05
ERQ1 12.0+1.5 4.0±1.0 30.0±3.0 0.80±0.05
ERQ2 15.0±1.5 5.5±1.0 38.0±3.0 0.80±0.05
Ð1.0
Ð1.0
Ð1.0
Power
Rating
at 70 ¡C
(W)
Part No.
Standard
QÕty/Packing
(pcs.)
Dimensions (mm)
nCut & Formed Type
Power
Rating
at 70 ¡C
(W)
Part No.
Standard
QÕty/Packing
(pcs.)
Dimensions (mm)
L
f
D
f
d
ll
3 max.
S
L
f
0.65±0.05
f
D
0.8
1.2±0.2
4.0±1.0
h
3.5 max.
S
L
f
0.80±0.05
f
D
1.0
1.4±0.2
4.0±1.5
h
nExplanation of Marking
1st significant
figure
Multipier Resistance tolerance
White color
shows Fuse Resistor
2nd significant figure
Q
105
1W
100
W
J
71
1
Q Shows Fuse Resistor Symbol Power rating
Manufacturing
Series No.
Date code
(Year, Month, Week)
Resistance value and tolerance
Type 14, 12 Type 1, 2
LfDSh
ERQ111JP111S
1 1000 12.0+1.5 4.0±1.0 15.0±1.5 6.0±1.5
ERQ211JP111S
2 1000 15.0±1.5 5.5±1.0 20.0±2.0 6.5±1.5
Ð1.0
ERQ11AJ111P
ERQ11ZJ111P
LfDS h
ERQ141J111P0.25 2000 6.3+1.5 2.3±0.5 10.0±1.5 4.0±1.5
ERQ121J111P0.5 2000 9.0+1.5 2.8±0.5 12.5±1.5 4.0±1.5
Ð1.0
Ð1.0
ERQ1ABJP111S
ERQ1ZJP111S
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
14A/14Z
12.7±1.0
12A/12Z, 1AB/1Z
30.0±1.0
14A/14Z
12.7±0.3
12A/12Z, 1AB/1Z
15.0±0.3
14A/14Z
6.35±1.00
12A/12Z, 1AB/1Z
7.5±1.0
14A/14Z
3.85±0.70
12A/12Z, 1AB/1Z
3.75±0.50
14A/14Z
5.0+0.6
12A/12Z, 1AB/1Z
7.5+0.6
18.0±0.5
9.0±0.5
14A/14Z
16.0±0.5
12A/12Z
18.0±1.0
1AB/1Z
18.0±1.0
P
P0
P1
P2
F
W
W1
H0
14A/14Z
6.5+0.6
12A/12Z
6.5+1.0
1AB/1Z
6.5+1.0
4.0±0.2
14A/14Z
6.35+0.65
12A/12Z
9.0+1.5
1AB/1Z
12.0+1.5
14A/14Z
11.2 max.
12A/12Z
14 max.
1AB/1Z
17 max.
14A/14Z
2.3+0.5
12A/12Z
2.8±0.5
1AB/1Z
4.0±1.0
14A/14Z
0.65±0.05
12A/12Z, 1AB/1Z
0.80±0.05
W
W1
14A/14Z 12 max.
12A/12Z 15.5 max.
1AB/1Z 19 max.
16.0±0.5
4.0±0.2
P
P0
P1
P2
F
nFor Panasert Automatic Insertion Machine Radial Tape & Box
Type ERQ11AJ111E
ERQ11ZJ111E
(14A/14Z, 12A/12Z, 1AB/1Z)
Dimensions (mm)
12.7±1.0
12.7±0.3
3.85±0.70
6.35±1.00
5.0±0.8
Dimensions (mm)
18.0±0.5
9.0±0.5
Dimensions (mm)
H1
H0
fD0
Dimensions (mm)
A
fd
14A/14Z 6.35+0.65
12A/12Z 9.0+1.5
1AB/1Z 12.0+1.5
0.65±0.05
Dimensions (mm)
D
14A/14Z 2.3±0.5
12A/12Z 2.8±0.5
1AB/1Z 4.0±1.0
Ð0.35
Ð1.0
Ð1.0
lRadial Tape Package Specifications
Part Number Standard Quantity
(pcs./box)
Dimensions (mm)
abc
ERQ14AJ111E46 130 335 2000
ERQ14ZJ111E
ERQ12AJ111E46 130 335 2000
ERQ12ZJ111E
ERQ1ABJ111E49 100 335 1000
ERQ1ZJ111E
Dimensions (mm)
nFor Panasart Automatic Insertion Machine Radial Taped & Box
Type ERQ11A/ZJW111E (14A/14Z, 12A/12Z, 1AB/1Z)
Dimensions (mm)
0
H1
fD0
A
B
fD
fd
0
0
Ð0.3
Ð1.0
Ð1.0
Ð0.35
P
0
f
D
0
f
d
W
H
1
P
1
F
PP
2
D
A
Insulated
Lead
W
1
H
0
a
b
c
Marking
P
1
P
AB
FP
2
H
1
H
0
W
1
W
f
d
f
D
P
0
f
D
0
Ð0.2
Ð0.2
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
nPerformance Specifications
Characteristics Test Methods
The test potential shall be preadjusted using a dummy
resistor and then be subjected to the test specimens.
The potential shall be readjusted within two seconds to
reach the exact value of specified current. This test
shall be made under the conditions at 20 ¡C and 65 %
RH (or at a temperature of 5 ¡C to 35 ¡C and 45 to
85 % RH, only when any doubt may not be caused),
and the use of stabilized power source is suggested.
Fusing time shall be measured as the duration until the
circuit current is decreased to a 1/50 the initial test
current or less.
Specifications
Rated Res. Value Limit
Power (W)
0.25 W
0.5 W
1 to 1.8
1W
2W
0.25 W
0.5 W 2 to 9.1
1W
2W
0.25 W 10 to 470
0.5 W
1 W 10 to 560
2W
Open within
30 seconds
at 25 times
the rated
power
Open within
30 seconds
at 12 times
the rated
power
Fusing
Characteristics
Open within
30 seconds
at 16 times
the rated
power
Open within
30 seconds
at 30 times
the rated
power
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
n
Fusing Characteristics (Constant Voltage Circuit)
These data are for reference, only specifications are subject to written form of engineering.
nHot Spot Temperature (for reference)
Measuring point
600
500
400
300
200
100
00123456789101112
14A
12A
1AB
2AB
Multiple of the power rating
Temperature rise
o
T (K)
2.0 to 9.1 (
W
)
10 to 560 (
W
)
ERQ12A
200
100
50
30
10
5
10 79121620 25 30
Fusing time (s)
Multiple of the power rating
2.0 to 9.1 (
W
)
10 to 470 (
W
)
ERQ14A
200
100
50
30
10
5
10 79121620 25 30
Multiple of the power rating
Fusing time (s)
2.0 to 9.1 (
W
)
10 to 560 (
W
)
ERQ1AB
200
100
50
30
10
5
10 79121620 25 30
Multiple of the power rating
Fusing time (s)
2.0 to 9.1 (
W
)
10 to 560 (
W
)
ERQ2AB
200
100
50
30
10
5
10 79121620 25 30
Multiple of the power rating
Fusing time (s)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
Cautions for Safety
PP: Pulse limit power (W)
VP: Pulse limit voltage (V)
t: Pulse continuous time (s)
T : Period (s)
VR: Rated voltage (V)
P : Rated power (W)
R : Resistance value (W)
Vp max. : Max. pulse limit voltage (V)
(Data for Reference)
nPulse Characteristics (Usual)
T
Pp (Vp)
t
Withstand pulse limit power is calculated by the next
method.
PP=KáPáT/t
VP=ÃKáPáRáT/t
Reference to the right about a fixed number of
VP max.
ERQ14A 0.6 200
ERQ12A 0.6 250
ERQ1AB 0.6 250
ERQ2AB 0.4 250
lT>1(s) ®T=1(s)
lT/t>100 ®T/t=100
lPP<P ®P stands for PP
(VP<VR®VR stands for VP)
lAdded voltage<Vp max.
lPP or VP is reference value
Conditions : Pulse added time=1000 h, Resistance change=±5 %,
Room temperature
Type K Vp max. (V)
The following are precautions for individual products. Please also refer to the precautions common to Fixed Resistors
shown on page ER3 of this catalog.
1. Checking the fusing conditions
1) Fusing characteristics differ depending on the type, shape, and resistance. Check the fusing conditions before
selecting the type of Metal Film Fusing Resistors (hereafter called the Fusing Resistor) to be used.
2) Use the Fusing Resistors under the maximum open circuit voltage. Otherwise, arcing may occur when a voltage
much higher than the rated one is applied in the event of an abnormality in the circuit, or when a high voltage
is applied after fusing.
3) Under abnormal conditions of a constant voltage circuit, a current of about 2 or 3 times the initial abnormal
current passes through, accelerating the speed at which the Fusing Resistors blows. When using a constant
current circuit, carefully check the conditions because the Fusing Resistors may not blow in a constant
current circuit.
2. Checking for pulse voltage, impact voltage, and transient voltage
Make sure to evaluate and check the Fusing Resistors mounted on your product if they are to be mounted on
a circuit that generates an impact voltage, or if there is a possibility that the transient phenomenon
(significantly high voltage applied in a short time) may occur or that a pulse voltage with a high peak
voltage may be applied. Make sure to consult our sales staff before using the Fusing Resistors under
special conditions.
3. Conditions of use in a steady state
Make sure that the load conditions have a sufficient allowance for the power derating curve. The characteristics
of the Fusing Resistors are set by using a constant voltage circuit.
4. The solvent resistance of the Fusing Resistors is not assured. If you use a solvent for cleaning after soldering
or other processes, make sure to consult our sales staff before use and perform a prior test and evaluation to
ensure that the solvent will not affect the reliability of the Fusing Resistors.
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Metal Film
Fusing Resistors, ERQA, Z
nPulse Characteristics (Inrush)
(Test Methods)
Resistance change<±5 % with pulse 10000 cycles
as like the figure.
1) Added power and added voltage are within the
lower teritory of this graph
2) Added in normal temperature and humidity
Max. Added Pulse Voltage
14A 200 V
12A 250 V
1AB 250 V
2AB 300 V
Added Power (W)
1K
500
100
50
10
5
1 5 10 50 100 500 1000
Time Constant (ms)
*
Reference
2AB
1AB
12A
14A
0.4
´
E
E
t
25 s
P=E
2
/R
E : Voltage (V)
R : Resistance (
W
)
– ER3 –
Caution for Safety
(Common precautions for Fixed Resistors)
¥ When using our products, no matter what sort of equipment they might be used for, be sure to make a written
agreement on the specifications with us in advance. The design and specifications in this catalog are subject
to change without prior notice.
¥ Do not use the products beyond the specifications described in this catalog.
¥ This catalog explains the quality and performance of the products as individual components. Before use, check
and evaluate their operations when installed in your products.
¥ Install the following systems for a failsafe design to ensure safety if these products are to be used in equipment
where a defect in these products may cause the loss of human life or other significant damage, such as damage to
vehicles (automobile, train, vessel), traffic lights, medical equipment, aerospace equipment, electric heating
appliances, combustion/gas equipment, rotating equipment, and disaster/crime prevention equipment.
] Systems equipped with a protection circuit and a protection device
] Systems equipped with a redundant circuit or other system to prevent an unsafe status in the event of a single fault
(1) Precautions for use
¥ These products are designed and manufactured for general purpose and standard use in general electronic
equip ment (e.g. AV equipment, home electric appliances, office equipment, information and communication
equipment)
¥ These products are not intended for use in the following special conditions. Before using the products,
carefully check the effects on their quality and performance, and determine whether or not they can be used.
1. In liquid, such as water, oil, chemicals, or organic solvent
2. In direct sunlight, outdoors, or in dust
3. In salty air or air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NO2
4. In an environment where strong static electricity or electromagnetic waves exist
5. In an environment where these products cause dew condensation
6. Sealing or coating of these products or a printed circuit board on which these products are mounted, with
resin or other materials
¥ These products generate Joule heat when energized. Carefully position these products so that their heat will
not affect the other components.
¥ Carefully position these products so that their temperatures will not exceed the category temperature range due
to the effects of neighboring heat-generating components. Do not mount or place heat-generating components
or inflammables, such as vinyl-coated wires, near these products .
¥ Note that non-cleaning solder, halogen-based highly active flux, or water-soluble flux may deteriorate the
perfor mance or reliability of the products.
¥ Carefully select a flux cleaning agent for use after soldering. An unsuitable agent may deteriorate the performance
or reliability. In particular, when using water or a water-soluble cleaning agent, be careful not to leave water
residues. Otherwise, the insulation performance may be deteriorated.
(2) Precautions for storage
The performance of these products, including the solderability, is guaranteed for a year from the date of arrival
at your company, provided that they remain packed as they were when delivered and stored at a temperature
of 5 ¡C to 35 ¡C and a relative humidity of 45 % to 85 %.
Even within the above guarantee periods, do not store these products in the following conditions. Otherwise,
their electrical performance and/or solderability may be deteriorated, and the packaging materials (e.g. taping
materials) may be deformed or deteriorated, resulting in mounting failures.
1. In salty air or in air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NO2
2. In direct sunlight
<Package markings>
Package markings include the product number, quantity, and country of origin.
In principle, the country of origin should be indicated in English.
