
WSFB1520
Jingwo WSFB1520 Three-Terminal Fuse (Series Lithium Battery Protection for 5)
WSFB Series 3-Terminal Fuses: Rated 15A, Max 36V DC. Compatible with 5 series lithium batteries. Integrated overcurrent and overvoltage protection.
- 3-terminal SMD
- Power Tools, Garden Tools, and High-Cell Count Lithium Battery Packs
- Jingwo three-terminal fuse

Product Description
Jingwo Technology's WSFB series three-terminal fuses integrate the fuse element and heating element into a single unit. Overcurrent or overvoltage conditions trigger the heater to melt the fuse, ensuring reliable disconnection of lithium battery packs. The WSFB1520 model has a rated current of 15A, supports 5 series cells, and operates at a maximum voltage of 36V DC. It features a breaking capacity of 50A, an operating voltage range of 14.4–23.5V, a heater resistance of 17.9–29.1Ω, and a fuse resistance of 1.0–3.0mΩ. With fast response times, it is ideal for high-density surface mounting and complies with RoHS requirements.
Specifications
| Series | WSFB |
|---|---|
| Rated Current | 15 A |
| Compatible Cell String Count | 5 string |
| Maximum Voltage | 36 V DC |
| Breaking Capacity | 50 A |
| Operating Voltage | 14.4–23.5 V |
| Heater resistor | 17.9–29.1 Ω |
| Fuse resistor | 1.0–3.0 mΩ |
The parameters shown represent general category ranges. Actual supply shall be based on the specification confirmed at the time of order.
Supply Notes
- Authorized by the original manufacturer; datasheets and compliance reports available.
- High-cell-count battery packs can be paired with solution selection.
- Battery pack solutions available for bulk supply.
Alternative Models
The following models are compatible alternatives with similar specifications or pinouts. Please verify details in the datasheet.
This table includes series-level reference items. Please confirm package, ratings, and fuse characteristics with engineering before bulk procurement.
ITV Series
- Package
- 3-terminal SMD
- Rating
- 15A/ 3 2V DC
Three-terminal battery fuse: 15A, 32V, compatible with 5 series Li-ion batteries; overcurrent and overvoltage protection.
SF Series
- Package
- 3-terminal SMD
- Rating
- 15A/ 3 2V DC
3-Terminal Lithium Protection Fuse 15A, Compatible with 5 Series Battery Pack
The highlighted alternative has a lower voltage rating than this product. Verify the operating voltage before substitution.
Alternative models are for reference only. Confirm actual selection based on application requirements and datasheets. For further suggestions, submit an inquiry.
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