Littelfuse Cordless Tool Battery Pack Protection
Littelfuse Cordless Tool Battery Pack Protection components consist of thermistors, fuses, battery protectors, diodes/arrays, tactile switches, and more. These components offer overtemperature, overcurrent, overcharge, ESD, and voltage transient protection. The space-saving devices are ideal for use in tool and appliance battery packs.
Block Diagram
1. Li Ion Cells (Cell Level Protection)
Littelfuse MHP-TAC Mini-Breakers
Act as a heater and keep the bimetal latched until the fault is removed.
Littelfuse KC Miniature Leaded Epoxy Coated Thermistors
Superior long-term reliability for temperature measurement, control, and compensation.
2. Secondary Protection
Littelfuse BF1 High Current Automotive Fuses
Bolt-on, automotive fuses for high current wiring protection rated at 32VDC or 58VDC.
Littelfuse 881 AEC-Q200 High-Current Subminiature SMD Fuses
Features a 60A-100A current range, a 75VDC voltage rating, and a 80mV voltage drop.
Littelfuse 688 Fuses
Offers protection superior to that of circuit breakers while ensuring long-term reliability.
Littelfuse ITV Battery Protectors
Three-terminal, surface-mount Li-ion SCPs designed to protect against overcurrent & overcharging.
3. Battery Management Unit & Cell Balancing
Littelfuse 0805L Series Surface-Mount PTC Fuses
6VDC to 63VDC voltage range, 8A maximum time to trip current, and 16mΩ to 70Ω resistance range.
Littelfuse NANO Fuses
Fast-acting, high-performance fuses available in a wide range of available current ratings.
Littelfuse SP1003 SPA® Unidirectional Discrete TVS Diodes
Diode arrays that safely absorb repetitive ESD strikes at ±30kV without performance degradation.
Littelfuse SP1006 Unidirectional Discrete TVS Diode Array
Safely absorbs repetitive ESD strikes at ±30kV without performance degradation, size 0201 footprint.
4. Primary Protection
Littelfuse SMF Uni/Bi-Directional SMD TVS Diodes
Provides protection from voltage transients induced by lightning and other transient voltage events.
Littelfuse SMF4L 400W Surface Mount Diodes
Designed specifically to protect sensitive electronic equipment from voltage transients
5. ID Pin
Littelfuse SP3021 SPA® Bidirectional Discrete TVS Diode Array
Back-to-back TVS diodes fabricated with silicon avalanche technology protect electronic equipment.
Littelfuse SP1007 SPA® Bidirectional Discrete TVS Diode Array
Provides a high ESD (electrostatic discharge) protection level for electronic equipment.
Littelfuse zeptoSMDC PPTCs
Offers 13VDC maximum electrical rating, 82mA to 200mA current range, & up to 80Ω initial resistance.
6. Switches
C&K Switches KSC Sealed Tact Switches for SMT
Ultra long life switches designed to withstand intensive use and last up to 5 million cycles.
C&K Switches PTS645 6mm Tactile Switches
Offers a compact 6mm x 6mm size, variety of actuator lengths, and choice of actuator force.
Additional Resources
Related Products
Littelfuse Portable/Corded Power Tool Solutions
Safety and control elements used in battery-powered devices in various applications.