POLYSWITCH RESETTABLE DEVICES - Littelfuse

1 POLYSWITCH RESETTABLE DEVICESR adial-Leaded DevicesLittelfuse s POLYSWITCH 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 thermal derating and operating temperatures up to 125 C RUEF series for balance of voltage rating (30V) and hold current (up to 9A) RUSBF series for fast time-to-trip and low-resistance computer applications RXEF series for low hold currents (down to 50mA) and high voltage rating (up to 72V) RKEF series for balance of voltage rating (60V) and hold current (up to 5A)

2 Now offering halogen free versions of all productsBENEFITS Many product choices help provide engineers more design flexibility Compatible with high-volume electronics assembly Assists in meeting regulatory requirements Higher voltage ratings allow use in new applicationsFEATURES RoHS compliant Halogen free (refers to: Br 900ppm, Cl 900ppm, Br+Cl 1500ppm) Broadest range of radial-leaded RESETTABLE DEVICES available in the industry Current ratings from 50mA to 15A Voltage ratings from 6V (computer and electronic applications) to 72V Agency recognition : UL, CSA, T V, CQC** Fast time-to-trip Low resistance **CQC only applies to RXEF, RUEF family partsAPPLICATIONS Satellite video receivers Industrial controls Transformers Modems CD-ROMs Game machines Phones Fax machines Analog and digital line cards Printers Intelligent appliance Robotic machine Power supply Security Lighting Medical applicationRoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice.

3 2018 Littelfuse , Inc. 154 Application Selection GuideThe guide below lists POLYSWITCH radial-leaded DEVICES that are typically used in each of the applications described. Specifications for the suggested device part numbers can be found in this section. Once a part number has been selected, the user should evaluate and test each product for its intended R1 Product Series - Current Rating, Voltage Rating/Typical ResistanceVoltage RatingRXEF 72 VRKEF 60 VRXEF 60 VRUEF 30 VRGEF 16 VRHEF 16 VRHEF 30 VRUSBF 16 VRUSBF 6 VHold Current (A) 1.

4 10 Protection ApplicationPolySwitch RESETTABLE DEVICES Key Selection CriteriaSmall SizeFlatter DeratingLower Current Higher VoltageElectromagnetic LoadsRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Halogen LightingRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Lighting BallastRXEF (<72V)LoudspeakersRXEF (<72V)RXEF (<72V), RKEF (<60V)Medical EquipmentRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)MOSFET DevicesRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Motors, Fans and BlowersRXEF (<72V), RGEF (<16V)RHEF (<16V)POS EquipmentRXEF (<72V), RUEF (<30V)Process and Industrial ControlsRXEF (<72V), RUEF (<30V)Satellite Video ReceiversRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Security and Fire Alarm SystemsRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Test and Measurement EquipmentRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)TransformersRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)DDC Computer and Consumer ElectronicsRUEF (<30V)Mouse and KeyboardRUEF (<30V)SCSIRUEF (<30V)USBRUSBF (<16V)

5 Traces and Printed Circuit Board ProtectionRGEF (<16V), RUEF (<30V)RHEF (<16V)RXEF (<72V), RKEF (<60V)Note : This list is not exhaustive. Littelfuse welcomes customer input for additional application ideas for POLYSWITCH RESETTABLE Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice. 2018 Littelfuse , Inc. 155 POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesTable R2 Thermal Derating [Hold Current (A) at Ambient Temperature ( C)]Part NumberMaximum Ambient Temperature-40 C -20 C 0 C 20 C 25 C 40 C50 C60 C70 C85 C125 CRXEF RXEF RXEF0651. RXEF0751. 1 1 51.

6 171. 0 0 0 Table R1 Product Series - Current Rating, Voltage Rating/Typical Resistance (Cont d)Voltage RatingRXEF72 VRKEF60 VRXEF60 VRUEF30 VRGEF16 VRHEF16 VRHEF30 VRUSBF16 VRUSBF6 VHold Current (A) 11. 0 0 RoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice. 2018 Littelfuse , Inc. POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesTable R2 Thermal Derating [Hold Current (A) at Ambient Temperature ( C)] (Cont d)Part NumberMaximum Ambient Temperature-40 C -20 C 0 C 20 C 25 C 40 C50 C60 C70 C85 C125 CRKEF; RUEF; 1 1 0 7 RHEF; 30V - High 1 0.

7 0 1 1 RGEF; 81. 61. 2 91. 4 9 RGEF5007. 37. 0 RGEF80011. RoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice. 2018 Littelfuse , Inc. 157 POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesFigures R1-R5 Thermal Derating CurveRXEFF igure R1 Table R2 Thermal Derating [Hold Current (A) at Ambient Temperature ( C)] (Cont d)Part NumberMaximum Ambient Temperature-40 C -20 C 0 C 20 C 25 C 40 C50 C60 C70 C85 C125 CRGEF; 97. 511. 0 RGEF12001 7. RHEF; 16V - High 0 1 0 7 7. 1 ; 1 1 -40-20020406080% of Rated Hold and Trip CurrentAmbient Temperature ( C)200150100500 RoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice.

8 2018 Littelfuse , Inc. POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesFigures R1-R5 Thermal Derating Curve(Cont d)RKEFRHEFF igure R2 Figure R3 Figure R4% of Rated Hold and Tr ip CurrentAmbient Temperature ( C)200150100500-40-20020406080% of Rated Hold and Trip CurrentAmbient Temperature ( C)200150100500-40-20020406080 AABB-40-20060402080100120% of Rated Hold and Trip CurrentAmbient Temperature ( C)200150100500A = RUSBF075, RUSBF120, RUSBF155B = RUEF, and all other RUSBFRoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice. 2018 Littelfuse , Inc.

9 159 POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesFigures R1-R5 Thermal Derating Curve(Cont d)RGEFF igure R5-40-20020406080% of Rated Hold and Trip CurrentAmbient Temperature ( C)200150100500 Table R3 Electrical CharacteristicsPartNumberIHITVMAXIMAXPD TypMax Time-to-tripRMINRMAXR1 MAXLead Size[mm2 (AWG)](A)(A)(VDC) (VAC RMS)(DCADC) (ACARMS)(W)(A)(s)( )( )( ) 40 311. [ (26)] 40 [ (24)] 40 [ (24)] 0 [ (24)] [ (24)] [ (24)] [ (24)] 0 17[ (24)] [ (24)] [ (24)] [ (24)]RXEF1101. [ (20)] [ (20)] [ (20)] [ (20)] [ (20)] [ (20)] [ (20)]RoHS Compliant, ELV CompliantHFHalogen FreeSpecifications subject to change without notice.

10 2018 Littelfuse , Inc. POLYSWITCH RESETTABLE DevicesRadial-Leaded DevicesTable R3 Electrical Characteristics (Cont d)PartNumberIHITVMAXIMAXPD TypMax Time-to-tripRMINRMAXR1 MAXLead Size[mm2 (AWG)](A)(A)(VDC) (VAC RMS)(DCADC) (ACARMS)(W)(A)(s)( )( )( )RKEF; 0 060 40 [ (24)] 40 [ (24)] 40 [ (24)] 40 [ (24)]RKEF1101. 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)] 40 [ (20)]RUEF; [ (24)]RUEF1101.