n Single blow fuse for overcurrent protection
n 3216 (EIA 1206) miniature footprint
n Slow blow fuse (Fusing time ≤5 seconds at 250 % rated current)
n UL 248-14 listed
n Surface mount packaging for automated assembly
n Multilayer SMD design
n RoHS compliant* and halogen free**
Electrical Characteristics
SF-1206SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Model Rated Current
(Amps) Fusing Time Resistance
(Ω) Typ.***
Rated
Voltage
Interrupting Rating
(Ω) Typ.***
Typical
I2t (A2s) ****
SF-1206S050M-2 0.50
Open within 5
sec. at 250 %
rated current
0.730
DC 63 V DC 63 V
50 A
0.002
SF-1206S075M-2 0.75 0.513 0.005
SF-1206S100M-2 1.00 0.220 0.011
SF-1206S150M-2 1.50 0.120 0.024
SF-1206S175M-2 1.75 0.100 0.045
SF-1206S200M-2 2.00 0.050 0.075
SF-1206S250M-2 2.50 0.035
DC 32 V
DC 32 V
50 A
0.110
SF-1206S300M-2 3.00 0.031 0.210
SF-1206S400M-2 4.00 0.022
DC 32 V
45 A
0.350
SF-1206S500M-2 5.00 0.015 0.600
SF-1206S600M-2 6.00 0.013 1.000
SF-1206S700M-2 7.00 0.011 1.600
SF-1206S800M-2 8.00 0.008 2.300
Reliability Testing
SinglFuse™ SF-1206SxxxM Series Features
No. Test Requirement Test Condition Test Reference
1Soldering heat
resistance
DCR change ≤ ±10 %
No mechanical damage One dip at 260 °C for 60 seconds MIL-STD-202
Method 210
2 Solderability Minimum 95 % coverage One dip at 245 °C for 5 seconds MIL-STD-202
Method 208
3 Thermal shock DCR change ≤ ±10 %
No mechanical damage 100 cycles between -65 °C and +125 °C MIL-STD-202
Method 107
4 Moisture resistance DCR change ≤ ±15 %
No excessive corrosion 10 cycles MIL-STD-202
Method 106
5 Salt spray DCR change ≤ ±10 %
No excessive corrosion 48 hour exposure, 5 % salt solution MIL-STD-202
Method 101
6 Mechanical vibration DCR change ≤ ±10 %
No mechanical damage
0.4 inch D.A. or 30 G between
5-3000 Hz
MIL-STD-202
Method 204
7 Mechanical shock DCR change ≤ ±10 %
No mechanical damage 1500 G, 0.5 ms, half-sine shocks MIL-STD-202
Method 213
8 Life
No electrical “opens” during testing.
Voltage drop change shall be less than
±20 % of initial value.
80 % rated current (75 % for ≤1 A fuses)
for 2000 hours at ambient temperature
+20 °C ~ +30 °C
Refer to STP
document
D
*** Resistance value measured with ≤10 % rated current at 25 °C ambient. Tolerance ±25 %.
****Melting I2t calculated at 0.001 second pre-arcing time.
Operating Temperature ........................................... -55 °C to +125 °C
Storage Conditions
Temperature ..........................................................+5 °C to +35 °C
Humidity.................................................................... 40 % to 75 %
Shelf Life..................................... 2 years from manufacturing date
Moisture Sensitivity Level .................................................................. 1
ESD Classication (HBM)........................................................Class 6
Environmental Characteristics
UL File Number ................................................................. E198545
Agency Recognition
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU
June 8, 2011.
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or
less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and
Chlorine (Cl) content is 1500 ppm or less.
“SinglFuse” is a trademark of Bourns, Inc.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth
on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
n Portable memory
n LCD monitors
n Disk drives
n PDAs
n Digital cameras
n MP3 players
n Cell phones
n Rechargeable battery packs
n Battery chargers
n Set-top boxes
n Industrial controllers
n Battery Management Systems (BMS)
n LED lighting
n Power tools
SF-1206SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Product Dimensions Recommended Pad Layout
DIMENSIONS: MM
(INCHES)
Current Rating Thermal Derating Curve
Construction
SinglFuse™ SF-1206SxxxM Series Applications
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Typical Part Marking
Represents total content. Layout may
vary.
How to Order
SF - 1206 S 100 M - 2
SinglFuse™
Product Designator
SMD Footprint
1206 = 3216 (EIA 1206) size
Fuse Blow Type
S = Slow blow
Rated Current
050 ~ 800 (0.50 A - 8.00 A)
Structure Type
M = Multilayer
Packaging Type
- 2 = Tape & Reel
105
80
70
60
55
65
75
85
90
95
100
50
-55 -35 -15 5
MAXIMUM OPERATING TEMPERATURE (°C)
DERATING (%)
25 45 65 85 105 125
RATED CURRENT (A)
C = 0.50
D = 0.75
E = 1.00
G = 1.50
H = 1.75
I = 2.00
J = 2.50
D
K = 3.00
M = 4.00
N = 5.00
+ = 6.00
– = 7.00
= = 8.00
Packaging Quantity
3,000 pieces per 7 inch reel
1.60 ± 0.20
(.063 ± .008)
3.20 ± 0.20
(.126 ± .008)
1.60 ± 0.20
(.063 ± .008)
0.51 ± 0.25
(.020 ± .010)
1.80
(.071)
4.40
(.173)
1.50
(.059)
0.97 ± 0.20
(.038 ± .008)
CERAMIC
BODY
FUSE ELEMENT
TERMINATION
MARKING
MASKING LAYER
MASKING LAYER
MARKING
SF-1206SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Recommended Temperature Prole for Wave Soldering
TIME
TEMPERATURE (°C)
tL
TIME 25 °C TO PEAK
tp
Ts
Tsmax
Tsmin
TP
260
150
10 sec. max.
PREHEATING
TL
25
TC -5 °C
PREHEAT AREA
MAX. RAMP UP RATE = 3 °C/s
MAX. RAMP DOWN RATE = 6 °C/s
TEMPERATURE (°C)
120 seconds TIME
Wave soldering is suitable for 1206 size models.
Solder Reow Recommendations
Prole Feature Pb-Free Assembly
Preheat / Soak:
Temperature Min. (Tsmin)
Temperature Max. (Tsmax)
Time (ts) from (Tsmin to Tsmax)
150 °C
200 °C
60~120 seconds
Ramp Up Rate (TL to Tp)3 °C / second max.
Liquidous Temperature (TL)
Time (tL) maintained above TL
217 °C
60~150 seconds
Peak Package Body
Temperature (Tp)260 °C
Time (tp)* within 5 °C of the
specied classication temperature
(Tc)
30 seconds*
Ramp Down Rate (Tp to TL)6 °C / second max.
Time 25 °C to Peak Temperature 8 minutes max.
*Tolerance for peak prole temperature (Tp ) is dened as a
supplier minimum and a user maximum.
TIME
TEMPERATURE (°C)
tL
TIME 25 °C TO PEAK
tp
ts
Tsmax
Tsmin
Tp
TL
25
Tc -5 °C
PREHEAT AREA
MAX. RAMP UP RATE = 3 °C/s
MAX. RAMP DOWN RATE = 6 °C/s
SF-1206SxxxM Series - Slow Blow Multilayer Surface Mount Fuses
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Average Pre-Arcing Time vs. Current Curves Average I2t vs. t Curves
REV. D 01/19
10
1
0.1
0.01
0.001
0.0001
0.1 110
CURRENT (A)
PRE-ARCING TIME (s)
100
1.50 A
1.75 A
3.00 A
4.00 A
5.00 A
6.00 A
7.00 A
2.00 A
2.50 A
0.75 A
1.00 A
0.50 A 8.00 A
1000
10000
100
10
1
0.1
0.01
0.001
0.0001
0.10.010.0010.0001 110
TIME (s)
I2t (A2s)
8.00 A
7.00 A
5.00 A
4.00 A
3.00 A
2.50 A
2.00 A
1.75 A
1.50 A
1.00 A
0.75 A
0.50 A
6.00 A
SF-1206SxxxMSeriesTapeandReelSpecications
SF-1206SxxxM Series
Tape Dimensions per EIA 481-2
W 8.00 ± 0.10
(.315 ± .004)
P0
4.0 ± 0.10
(.157 ± .004)
P1
4.0 ± 0.10
(.157 ± .004)
P2
2.0 ± 0.05
(.079 ± .002)
A0
1.80 ± 0.10
(.071 ± .004)
B0
3.50 ± 0.10
(.138 ± .004)
F 3.50 ± 0.05
(.138 ± .002)
E1
1.75 ± 0.10
(.069 ± .004)
D0
1.50 + 0.10
(.059 + .004)
K0
1.10 + 0.10
(.043 + .004)
T 0.23 ± 0.20
(.009 ± .008)
DIMENSIONS: MM
(INCHES)
PACKAGING: Plastic tape, 3,000 pcs. per reel
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
DIRECTION OF UNREELING
KO
AO
P1
60.20 ± 0.50
(2.370 ± .020)
DIA.
B0
W
13.20 +0.3/-0.2
(.520 +.012/-.008)
DIA.
178.00 ± 1.00
(7.008 ± .039)
DIA.
0.2
0.4
0.6
0.8
0.2
0.4
0.6
0.8
13.40 ± 0.50
(.539 ± .020)
1.40 ± 0.20
(.055 ± .008)
1.20 ± 0.20
(.047 ± .008)
2.20 ± 0.30
(.087 ± .012)
t
P2
D0P0
E1
F
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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and complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
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