Littelfuse, Inc. Datasheets for Resettable PTCs

Resettable (polymeric or positive temperature coefficient -  PTC) fuses are unlike traditional fuses that have to be replaced after a fault condition, this may not be necessary when using resettable fuses. The internal resistance of the component increases in response to an overcurrent or a short-circuit condition, limiting subsequent disturbances. After the fault condition is removed, the device cools and the internal resistance drops to nearly its initial value, permitting normal equipment operation to resume.
Resettable PTCs: Learn more

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Product Name Notes
Radial Leaded Resettable PTCs -- AGRF400-2
Radial Leaded Resettable PTCs -- AGRF500
Radial Leaded Resettable PTCs -- AGRF500-2
Radial Leaded Resettable PTCs -- AGRF600
Radial Leaded Resettable PTCs -- AGRF600-2
Radial Leaded Resettable PTCs -- AGRF700
Radial Leaded Resettable PTCs -- AGRF700-2
Radial Leaded Resettable PTCs -- AGRF800
Radial Leaded Resettable PTCs -- AGRF800-2
Radial Leaded Resettable PTCs -- AGRF800S-1
Radial Leaded Resettable PTCs -- AGRF900
Radial Leaded Resettable PTCs -- AGRF900-2
Radial Leaded Resettable PTCs -- AHEF050
Radial Leaded Resettable PTCs -- AHEF070
Radial Leaded Resettable PTCs -- AHEF100
Radial Leaded Resettable PTCs -- AHEF1000
Radial Leaded Resettable PTCs -- AHEF300
Radial Leaded Resettable PTCs -- AHEF500
Radial Leaded Resettable PTCs -- AHEF750
Radial Leaded Resettable PTCs -- AHRF050
Radial Leaded Resettable PTCs -- AHRF070
Radial Leaded Resettable PTCs -- AHRF100
Radial Leaded Resettable PTCs -- AHRF1000
Radial Leaded Resettable PTCs -- AHRF1000-2
Radial Leaded Resettable PTCs -- AHRF1100
Radial Leaded Resettable PTCs -- AHRF1300
Radial Leaded Resettable PTCs -- AHRF1300-2
Radial Leaded Resettable PTCs -- AHRF1400
Radial Leaded Resettable PTCs -- AHRF1500
Radial Leaded Resettable PTCs -- AHRF200
Radial Leaded Resettable PTCs -- AHRF200-2
Radial Leaded Resettable PTCs -- AHRF300
Radial Leaded Resettable PTCs -- AHRF400
Radial Leaded Resettable PTCs -- AHRF450
Radial Leaded Resettable PTCs -- AHRF450-2
Radial Leaded Resettable PTCs -- AHRF450S-1
Radial Leaded Resettable PTCs -- AHRF550
Radial Leaded Resettable PTCs -- AHRF600
Radial Leaded Resettable PTCs -- AHRF600-2
Radial Leaded Resettable PTCs -- AHRF650
Radial Leaded Resettable PTCs -- AHRF650-2
Radial Leaded Resettable PTCs -- AHRF700
Radial Leaded Resettable PTCs -- AHRF750
Radial Leaded Resettable PTCs -- AHRF750-2
Radial Leaded Resettable PTCs -- AHRF800
Radial Leaded Resettable PTCs -- AHRF800-2
Radial Leaded Resettable PTCs -- AHRF900
Helping to reduce weight of wire harnesses, PPTC devices distributed in a circuit can allow the use of smaller wire sizes with the resulting harnesses. Forego looping back and forth...
Radial Leaded Resettable PTCs -- RGEF1000
Radial Leaded Resettable PTCs -- RGEF1000-1
Radial Leaded Resettable PTCs -- RGEF1000-2
Radial Leaded Resettable PTCs -- RGEF1100
Radial Leaded Resettable PTCs -- RGEF1100-2
Radial Leaded Resettable PTCs -- RGEF1200
Radial Leaded Resettable PTCs -- RGEF1200-1
Radial Leaded Resettable PTCs -- RGEF1200-2
Radial Leaded Resettable PTCs -- RGEF1400
Radial Leaded Resettable PTCs -- RGEF1400-1
Radial Leaded Resettable PTCs -- RGEF1400-2
Radial Leaded Resettable PTCs -- RGEF250
Radial Leaded Resettable PTCs -- RGEF250-2
Radial Leaded Resettable PTCs -- RGEF250-AP
Radial Leaded Resettable PTCs -- RGEF300
Radial Leaded Resettable PTCs -- RGEF300-1
Radial Leaded Resettable PTCs -- RGEF300-2
Radial Leaded Resettable PTCs -- RGEF300K
Radial Leaded Resettable PTCs -- RGEF300K-2
Radial Leaded Resettable PTCs -- RGEF400
Radial Leaded Resettable PTCs -- RGEF400-2
Radial Leaded Resettable PTCs -- RGEF400-AP
Radial Leaded Resettable PTCs -- RGEF400K
Radial Leaded Resettable PTCs -- RGEF400K-2
Radial Leaded Resettable PTCs -- RGEF400K-AP
Radial Leaded Resettable PTCs -- RGEF500
Radial Leaded Resettable PTCs -- RGEF500-1
Radial Leaded Resettable PTCs -- RGEF500-2
Radial Leaded Resettable PTCs -- RGEF500-AP
Radial Leaded Resettable PTCs -- RGEF500K
Radial Leaded Resettable PTCs -- RGEF500K-2
Radial Leaded Resettable PTCs -- RGEF500K-AP
Radial Leaded Resettable PTCs -- RGEF600
Radial Leaded Resettable PTCs -- RGEF600-1
Radial Leaded Resettable PTCs -- RGEF600-2
Radial Leaded Resettable PTCs -- RGEF600K
Radial Leaded Resettable PTCs -- RGEF600K-2
Radial Leaded Resettable PTCs -- RGEF600K-AP
Radial Leaded Resettable PTCs -- RGEF700
Radial Leaded Resettable PTCs -- RGEF700-1
Radial Leaded Resettable PTCs -- RGEF700-2
Radial Leaded Resettable PTCs -- RGEF700-AP
Radial Leaded Resettable PTCs -- RGEF700K
Radial Leaded Resettable PTCs -- RGEF700K-2
Radial Leaded Resettable PTCs -- RGEF800
Radial Leaded Resettable PTCs -- RGEF800-1
Radial Leaded Resettable PTCs -- RGEF800-2
Radial Leaded Resettable PTCs -- RGEF800K
Radial Leaded Resettable PTCs -- RGEF900
Radial Leaded Resettable PTCs -- RGEF900-1
Radial Leaded Resettable PTCs -- RGEF900-2
Radial Leaded Resettable PTCs -- RHEF050
Radial Leaded Resettable PTCs -- RHEF050-2
Radial Leaded Resettable PTCs -- RHEF050-AP
Radial Leaded Resettable PTCs -- RHEF070
Radial Leaded Resettable PTCs -- RHEF070-2
Radial Leaded Resettable PTCs -- RHEF070-AP
Radial Leaded Resettable PTCs -- RHEF100
Radial Leaded Resettable PTCs -- RHEF100-2
Radial Leaded Resettable PTCs -- RHEF100-AP
Radial Leaded Resettable PTCs -- RHEF1000
Radial Leaded Resettable PTCs -- RHEF1000-2
Radial Leaded Resettable PTCs -- RHEF1100
Radial Leaded Resettable PTCs -- RHEF1300
Radial Leaded Resettable PTCs -- RHEF1300-2
Radial Leaded Resettable PTCs -- RHEF1400
Radial Leaded Resettable PTCs -- RHEF1500
Radial Leaded Resettable PTCs -- RHEF1500-2
Radial Leaded Resettable PTCs -- RHEF200
Radial Leaded Resettable PTCs -- RHEF200-2
Radial Leaded Resettable PTCs -- RHEF300
Radial Leaded Resettable PTCs -- RHEF400
Radial Leaded Resettable PTCs -- RHEF400-2
Radial Leaded Resettable PTCs -- RHEF450
Radial Leaded Resettable PTCs -- RHEF450-2
Radial Leaded Resettable PTCs -- RHEF550
Radial Leaded Resettable PTCs -- RHEF600
Radial Leaded Resettable PTCs -- RHEF600-2
Radial Leaded Resettable PTCs -- RHEF650
Radial Leaded Resettable PTCs -- RHEF650-2
Radial Leaded Resettable PTCs -- RHEF700
Radial Leaded Resettable PTCs -- RHEF750
Radial Leaded Resettable PTCs -- RHEF750-2
Radial Leaded Resettable PTCs -- RHEF800
Radial Leaded Resettable PTCs -- RHEF900
Radial Leaded Resettable PTCs -- RKEF050
Radial Leaded Resettable PTCs -- RKEF050-AP
Radial Leaded Resettable PTCs -- RKEF065
Radial Leaded Resettable PTCs -- RKEF065-AP
Radial Leaded Resettable PTCs -- RKEF075
Radial Leaded Resettable PTCs -- RKEF075-2
Radial Leaded Resettable PTCs -- RKEF090
Radial Leaded Resettable PTCs -- RKEF110
Radial Leaded Resettable PTCs -- RKEF135
Radial Leaded Resettable PTCs -- RKEF160
Radial Leaded Resettable PTCs -- RKEF185
Radial Leaded Resettable PTCs -- RKEF250
Radial Leaded Resettable PTCs -- RKEF250K
Radial Leaded Resettable PTCs -- RKEF250K-2
Radial Leaded Resettable PTCs -- RKEF300
Radial Leaded Resettable PTCs -- RKEF300-2
Radial Leaded Resettable PTCs -- RKEF375
Radial Leaded Resettable PTCs -- RKEF375K
Radial Leaded Resettable PTCs -- RKEF400
Radial Leaded Resettable PTCs -- RKEF500
Radial Leaded Resettable PTCs -- RKEF500-1
Radial Leaded Resettable PTCs -- RKEF500-2
Radial Leaded Resettable PTCs -- RKEF500K-2
Radial Leaded Resettable PTCs -- RUEF090
Radial Leaded Resettable PTCs -- RUEF090-2
Radial Leaded Resettable PTCs -- RUEF090-AP
Radial Leaded Resettable PTCs -- RUEF110
Radial Leaded Resettable PTCs -- RUEF110-2
Radial Leaded Resettable PTCs -- RUEF110-AP
Radial Leaded Resettable PTCs -- RUEF110S
Radial Leaded Resettable PTCs -- RUEF135
Radial Leaded Resettable PTCs -- RUEF135-2
Radial Leaded Resettable PTCs -- RUEF135-AP
Radial Leaded Resettable PTCs -- RUEF135S
Radial Leaded Resettable PTCs -- RUEF160
Radial Leaded Resettable PTCs -- RUEF160-2
Radial Leaded Resettable PTCs -- RUEF160-AP
Radial Leaded Resettable PTCs -- RUEF160S
Radial Leaded Resettable PTCs -- RUEF185
Radial Leaded Resettable PTCs -- RUEF185-1
Radial Leaded Resettable PTCs -- RUEF185-2
Radial Leaded Resettable PTCs -- RUEF185-AP
Radial Leaded Resettable PTCs -- RUEF185S
Radial Leaded Resettable PTCs -- RUEF250
Radial Leaded Resettable PTCs -- RUEF250-2
Radial Leaded Resettable PTCs -- RUEF250-AP
Radial Leaded Resettable PTCs -- RUEF250S
Radial Leaded Resettable PTCs -- RUEF250U
Radial Leaded Resettable PTCs -- RUEF250U-2
Radial Leaded Resettable PTCs -- RUEF300
Radial Leaded Resettable PTCs -- RUEF300-2
Radial Leaded Resettable PTCs -- RUEF300-AP
Radial Leaded Resettable PTCs -- RUEF300K
Radial Leaded Resettable PTCs -- RUEF300K-2
Radial Leaded Resettable PTCs -- RUEF300K-AP
Radial Leaded Resettable PTCs -- RUEF300U
Radial Leaded Resettable PTCs -- RUEF300U-2
Radial Leaded Resettable PTCs -- RUEF400
Radial Leaded Resettable PTCs -- RUEF400-1
Radial Leaded Resettable PTCs -- RUEF400-2
Radial Leaded Resettable PTCs -- RUEF400-AP
Radial Leaded Resettable PTCs -- RUEF400K
Radial Leaded Resettable PTCs -- RUEF400K-2
Radial Leaded Resettable PTCs -- RUEF400K-AP
Radial Leaded Resettable PTCs -- RUEF500
Radial Leaded Resettable PTCs -- RUEF500-1
Radial Leaded Resettable PTCs -- RUEF500-2
Radial Leaded Resettable PTCs -- RUEF500K
Radial Leaded Resettable PTCs -- RUEF500K-2
Radial Leaded Resettable PTCs -- RUEF500K-AP
Radial Leaded Resettable PTCs -- RUEF600
Radial Leaded Resettable PTCs -- RUEF600-1
Radial Leaded Resettable PTCs -- RUEF600-2
Radial Leaded Resettable PTCs -- RUEF600-AP
Radial Leaded Resettable PTCs -- RUEF600K
Radial Leaded Resettable PTCs -- RUEF600K-2
Radial Leaded Resettable PTCs -- RUEF600K-AP
Radial Leaded Resettable PTCs -- RUEF700
Radial Leaded Resettable PTCs -- RUEF700-2
Radial Leaded Resettable PTCs -- RUEF700K
Radial Leaded Resettable PTCs -- RUEF700K-2
Radial Leaded Resettable PTCs -- RUEF800
Radial Leaded Resettable PTCs -- RUEF800-1
Radial Leaded Resettable PTCs -- RUEF800-2
Radial Leaded Resettable PTCs -- RUEF800K
Radial Leaded Resettable PTCs -- RUEF800K-2
Radial Leaded Resettable PTCs -- RUEF900
Radial Leaded Resettable PTCs -- RUEF900-2
Radial Leaded Resettable PTCs -- RUEF900K
Radial Leaded Resettable PTCs -- RUEF900K-2
Radial Leaded Resettable PTCs -- RUSBF075
Radial Leaded Resettable PTCs -- RUSBF075-2
Radial Leaded Resettable PTCs -- RUSBF075-AP
Radial Leaded Resettable PTCs -- RUSBF090
Radial Leaded Resettable PTCs -- RUSBF090-2
Radial Leaded Resettable PTCs -- RUSBF110
Radial Leaded Resettable PTCs -- RUSBF110-2
Radial Leaded Resettable PTCs -- RUSBF120
Radial Leaded Resettable PTCs -- RUSBF120-2
Radial Leaded Resettable PTCs -- RUSBF135
Radial Leaded Resettable PTCs -- RUSBF135-2
Radial Leaded Resettable PTCs -- RUSBF135-AP
Radial Leaded Resettable PTCs -- RUSBF155
Radial Leaded Resettable PTCs -- RUSBF155-2
Radial Leaded Resettable PTCs -- RUSBF155-AP
Radial Leaded Resettable PTCs -- RUSBF160
Radial Leaded Resettable PTCs -- RUSBF160-2
Radial Leaded Resettable PTCs -- RUSBF185
Radial Leaded Resettable PTCs -- RUSBF185-2
Radial Leaded Resettable PTCs -- RUSBF185-AP
Radial Leaded Resettable PTCs -- RUSBF250
Radial Leaded Resettable PTCs -- RUSBF250-2
Radial Leaded Resettable PTCs -- RXEF005
Radial Leaded Resettable PTCs -- RXEF005-2
Radial Leaded Resettable PTCs -- RXEF010
Radial Leaded Resettable PTCs -- RXEF010-1
Radial Leaded Resettable PTCs -- RXEF010-2
Radial Leaded Resettable PTCs -- RXEF010-AP
Our radial-leaded products represent the most comprehensive and complete set of PPTC products available in the industry today. RGEF series for hold currents up to 14A. RHEF series for flatter...

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