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SinglFuse™ SF-3812TL-T Series Features
■ Single blow fuse for overcurrent
.
i3
**
HA
*R
oH
S
protection
■ EIA 3812 (10030 metric) footprint
■ Ceramic tube design for time lag fusing
speed and low power applications
■ UL 248-14, IEC 60127-1 and IEC 60127-7
compliant
■ Surface mount packaging
for automated assembly
5A
■ RoHS compliant* and halogen free**
SF-3812TL-T Series – Time Lag & Low Power SMD Fuses
Clearing Time Characteristics for Series
Additional Information
Clearing Time at 25 °C
% of Current Rating
Min.
Max.
100 %
4 hours
—
250 %
—
120 seconds
Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES
SELECTOR LIBRARY
CONTACT
Electrical Characteristics
Certifications
Model
Rated
Current (A)
Resistance
(Ω) Typ.***
Rated
Voltage
Interrupting
Rating
Typical
I2t (A2s) ****
SF-3812TL050T-2
0.50
0.5479
1.963
SF-3812TL075T-2
0.75
0.26
3.375
SF-3812TL100T-2
1.00
0.18
11.22
SF-3812TL150T-2
1.50
0.1027
14.85
SF-3812TL200T-2
2.00
0.0504
19.84
250 VAC
50 A @ 250 VAC
SF-3812TL250T-2
2.50
0.037
20.5
SF-3812TL300T-2
3.00
0.028
54
SF-3812TL350T-2
3.50
0.0199
57.82
SF-3812TL400T-2
4.00
0.0158
125.6
SF-3812TL500T-2
5.00
0.012
185
cUL
TUV
E198545
R 50421699
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
*** Resistance value measured with ≤10 % rated current at 25 °C ambient. Tolerance ± 30 %.
**** Melting I2t calculated at 10 times rated current.
Environmental Characteristics
Operating Temperature................................................................................................................................................................ -55 °C to +125 °C
Storage Conditions
Temperature ............................................................................................................................................................................ +15 °C to +30 °C
Humidity......................................................................................................................................................................................... 20 % to 70 %
Shelf Life..........................................................................................................................................................2 years from manufacturing date
Moisture Sensitivity Level ...................................................................................................................................................................................... 1
ESD Classification (HBM)............................................................................................................................................................................ Class 6
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** 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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
SinglFuse™ SF-3812TL-T Series Applications
■ Lighting systems
■ Power adaptors
■ Power supplies
■ AC/DC converters
■ Telecom equipment system power
SF-3812TL-T Series – Time Lag & Low Power SMD Fuses
Average I2t vs. t Curves
Average Pre-Arcing Time vs. Current Curves
2A
2.5 A
1.5 A
3A
1A
3.5 A
0.75 A
4A
0.5 A
5A
1000000
100000
5A
10000
4A
100000
3.5 A
2.5 A
1000
2A
10000
1.5 A
1A
100
I2t (A2s)
PRE-ARCING TIME (SECONDS)
3A
10
0.75 A
0.5 A
1000
100
1
10
0.1
0.01
0.1
1
10
CURRENT (A)
100
1
0.01
0.1
1
10
100
1000
10000
100000
TIME (SECONDS)
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.
SF-3812TL-T Series – Time Lag & Low Power SMD Fuses
Typical Part Marking
Recommended Pad Layout
Represents total content. Layout may vary.
Packaging
6.10
(.240)
i 3.5A
3.43
(.135)
Rated Current
Part Marking
0.50 A
i500mA
0.75 A
i750mA
1.00 A
i1A
1.50 A
i1.5A
2.00 A
i2A
2.50 A
i2.5A
3.00 A
i3A
3.50 A
i3.5A
4.00 A
i4A
5.00 A
i5A
Reel Dimension
13-inch Tape and Reel
Specification
EIA 481-2
Quantity
2,500 pieces
Packaging Code
-2
3.25
(.128)
How to Order
MM
(INCHES)
DIMENSIONS:
SF - 3812 TL 050 T - 2
SinglFuse™
Product Designator
SMD Footprint
3812 = EIA 3812
(10030 metric)
Fuse Blow Type
TL = Time Lag & Low Power
Rated Current
050 - 500 (0.50 A ~ 5.00 A)
Structure Type
T = Ceramic Tube
Product Dimensions
Packaging Type
- 2 = Tape & Reel
3.10 ± 0.20
(.122 ± .008)
10.10 ± 0.40
(.398 ± .016)
i 3.5A
2.65 ± 0.20
(.104 ± .008)
1.75 ± 0.20
(.069 ± .008)
3.10 ± 0.20
(.122 ± .008)
DIMENSIONS:
MM
(INCHES)
RATED CURRENT PERCENTAGE (%)
Current Rating Thermal Derating Curve
120
100
80
60
40
25 °C
20
0
-60
-40
-20
0
20
40
60
80
100
120
140
AMBIENT TEMPERATURE (°C)
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.
SF-3812TL-T Series – Time Lag & Low Power SMD Fuses
Solder Reflow Recommendations
tp
TP
Profile Feature
CRITICAL ZONE
T L TO TP
RAMP-UP
Temperature
TL
tL
TS MAX.
RAMP-DOWN
TS MIN.
ts
PREHEAT
25 °C
t 25 °C TO PEAK
Time
Preheat / Soak:
Temperature Min. (Tsmin)
Temperature Max. (Tsmax)
Time (ts) from (Tsmin to Tsmax)
Pb-Free Assembly
150 °C
200 °C
60~180 seconds
Ramp Up Rate (TL to Tp)
3 °C / second max.
Ramp Up Rate (Tsmax to TL)
5 °C / second max.
Liquidous Temperature (TL)
Time (tL) maintained above TL
217 °C
60~90 seconds
Peak Package Body
Temperature (Tp)
235 °C ± 5 °C
Time within 5 °C of actual peak
temperature (Tp)
20~30 seconds*
Ramp Down Rate (Tp to TL)
6 °C / second max.
Time 25 °C to Peak Temperature
8 minutes max.
Do not exceed
240 °C
* Tolerance for peak profile temperature (Tp ) is defined as a
supplier minimum and a user maximum.
Solder Wave Recommendations
Peak Temperature (Dwell Time)
300
Profile Feature
280
260
Preheat:
Temperature Max. (Tsmax)
Time (Min. to Max.)
240
Temperature (°C)
220
200
180
160
140
Pb-Free Assembly
150 °C
60~90 seconds
Solder Pot Temperature
260 °C max.
Solder Dwell Time
2~3 seconds
120
100
80
60
40
20
0
20
40
60
PREHEAT TIME
80
100
120
140
160
180
200
220
240
COOLING TIME
Time (Sec.)
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.
SF-3812TL-T Series – Time Lag & Low Power SMD Fuses
Reliability Testing
No.
Test
Test Condition
Temperature setup: 235 ±5 °C
Time setup: 10 ±1 sec.
1
Solderability
2
Resistance to soldering Temperature setup: 235 ±5 °C
heat
Time setup: 30 ± 5 sec.
Requirement
Test Reference
After test terminal electrode wetting area
IEC 60068-2-58
must be greater than 95 %
DCR change ≤ ±15 %
IEC 60068-2-58
DCR change ≤ ±15 %
No mechanical damage
MIL-STD-202G
Method 107G
Test Condition B
3
Thermal shock
Temperature setup:
25 °C ~ -65 °C ~ 25 °C ~ 125 °C
Time setup: -65 °C (30 min)
~ 25 °C (5 min) ~ 125 °C (30 min)
~ 25 °C (5 min), 5 cycles
4
Humidity unload
Heat (85 ±0.5 °C)
High Humidity (85 ±1 % RH)
240 hours
DCR change ≤ ±15 %
No mechanical damage
MIL-STD-202G
Method 103B
Test Condition A
5
Salt spray
Salt spray concentration: 5 ±1 %
Test liquid temperature: 35 ±0.5 °C
96 hours
DCR change ≤ ±15 %
No mechanical damage
MIL-STD-202G
Method 101E
Test Condition A
6
Bending
The board shall be bent by 1 mm
at a rate of 1 mm/sec.
DCR change ≤ ±15 %
IEC 60127-4
7
Vibration
Frequency setup: 10 ~ 55 ~ 10 Hz
Time setup: 1 Minute/cycle
(X-Y-Z, 120 cycles, 6 hours)
DCR change ≤ ±15 %
No mechanical damage
MIL-STD-202G
Method 201A
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 04/21
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.
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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