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Battery Fuel Gauge IC Protection

Littelfuse offers protection components for battery fuel gauge ICs. Battery Fuel Gauge ICs are critical components to the battery management system within battery-operated electronics, including drones, medical equipment, small appliances, and mobile and wearable devices. Fuel gauge ICs monitor the battery state of charge, sending the data to power management ICs to provide optimal battery life, longevity, and overall system performance. Protecting the fuel gauge ICs is important due to the increased voltage in batteries up to 20V for USB-C. Sustained overvoltage, ESD, overcurrent faults, and overheating are all hazards that could damage the battery management system if proper protection is not used.

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Part #

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 5K OHM 5% 0805 SMT

KR502F0J
Littelfuse
1: HK$6.08
3,500In Stock

Mfr. Part No.
KR502F0J

Mouser Part No
576-KR502F0J

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 5K OHM 5% 0805 SMT

Datasheet

3,500In Stock

HK$6.08

HK$5.76

HK$5.39

HK$5.14

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 80 Ohms 82 mA 13 VDC - 20 C+ 60 C

zeptoSMDC0011F
Littelfuse
1: HK$3.78
12,155In Stock

Mfr. Part No.
zeptoSMDC0011F

Mouser Part No
576-ZEPTOSMDC0011F

Resettable Fuses - PPTC 80 Ohms 82 mA 13 VDC - 20 C+ 60 C

Datasheet

12,155In Stock

Cut Tape

HK$3.78

HK$3.42

HK$2.84

HK$2.62

View

Reel

HK$1.66

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

Thermal Cut-offs MHP-TAC15-12-85N

MHP-TAC15-12-85N
Littelfuse
1: HK$15.62
720In Stock

Mfr. Part No.
MHP-TAC15-12-85N

Mouser Part No
576-RF4783-000

Thermal Cut-offs MHP-TAC15-12-85N

Datasheet

720In Stock

HK$15.62

HK$14.06

HK$13.48

HK$12.08

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 1CH 30KV 5V

SP1006-01UTG
Littelfuse
1: HK$3.95
17,654In Stock

Mfr. Part No.
SP1006-01UTG

Mouser Part No
576-SP1006-01UTG

ESD Protection Diodes / TVS Diodes 1CH 30KV 5V

Datasheet

17,654In Stock

Cut Tape

HK$3.95

HK$1.79

HK$1.51

HK$1.15

View

Reel

HK$0.625

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT

RB103E0J
Littelfuse
1: HK$5.67
240Expected 10/9/2026

Mfr. Part No.
RB103E0J

Mouser Part No
576-RB103E0J

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT

Datasheet

240Expected 10/9/2026

HK$5.67

HK$4.31

HK$3.71

HK$3.58

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSO

KR104R0J
Littelfuse
1: HK$9.54
3,493Expected 7/10/2026

Mfr. Part No.
KR104R0J

Mouser Part No
576-KR104R0J

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSO

Datasheet

3,493Expected 7/10/2026

HK$9.54

HK$7.13

HK$5.70

HK$5.36

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR

RA103J0Q-TR
Littelfuse
10,000: HK$1.64
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
RA103J0Q-TR

Mouser Part No
576-RA103J0Q-TR

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

HK$1.64

Min.: 10,000
Mult.: 10,000

: 10,000

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT

RB103K0J
Littelfuse
4,000: HK$2.23
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
RB103K0J

Mouser Part No
576-RB103K0J

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$2.23

Min.: 4,000
Mult.: 4,000

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 200K OHM 5% 0805 SMT

KR204R0J
Littelfuse
3,500: HK$3.84
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
KR204R0J

Mouser Part No
576-KR204R0J

NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 200K OHM 5% 0805 SMT

Datasheet

Non-Stocked Lead-Time 14 Weeks

HK$3.84

Min.: 3,500
Mult.: 3,500

Thermal Cut-offs MHP-TAC15-12-72N

MHP-TAC15-12-72N
Littelfuse
1: HK$13.73
Non-Stocked

Mfr. Part No.
MHP-TAC15-12-72N

Mouser Part No
576-RF4780-000

Thermal Cut-offs MHP-TAC15-12-72N

Datasheet

Non-Stocked

HK$13.73

HK$12.08

HK$11.51

HK$10.28

View

Min.: 1
Mult.: 1

Thermal Cut-offs MHP-TAC15-12-77N

MHP-TAC15-12-77N
Littelfuse
1,000: HK$7.35
Non-Stocked Lead-Time 15 Weeks

Mfr. Part No.
MHP-TAC15-12-77N

Mouser Part No
576-RF4781-000

Thermal Cut-offs MHP-TAC15-12-77N

Datasheet

Non-Stocked Lead-Time 15 Weeks

HK$7.35

Min.: 1,000
Mult.: 1,000

Thermal Cut-offs MHP-TAC15-12-82N

MHP-TAC15-12-82N
Littelfuse
1,000: HK$8.22
Non-Stocked

Mfr. Part No.
MHP-TAC15-12-82N

Mouser Part No
576-RF4782-000

Thermal Cut-offs MHP-TAC15-12-82N

Datasheet

Non-Stocked

HK$8.22

Min.: 1,000
Mult.: 1,000

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSO

KR503L0J
Littelfuse
Lead-Time 12 Weeks

Mfr. Part No.
KR503L0J

Mouser Part No
576-KR503L0J

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSO

Datasheet

Lead-Time 12 Weeks

Quote

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR

RA104R0J
Littelfuse
Non-Stocked Lead-Time 15 Weeks

Mfr. Part No.
RA104R0J

Mouser Part No
576-RA104R0J

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR

Datasheet

Non-Stocked Lead-Time 15 Weeks

Quote

Resettable Fuses - PPTC 60 Ohms 200 mA 13 VDC - 20 C+ 60 C

zeptoSMDC0015F
Littelfuse
Non-Stocked

Mfr. Part No.
zeptoSMDC0015F

Mouser Part No
576-ZEPTOSMDC0015F

Resettable Fuses - PPTC 60 Ohms 200 mA 13 VDC - 20 C+ 60 C

Datasheet

Non-Stocked

Quote