K1200E70RP

Overview

The Littelfuse K1200E70RP is a silicon bilateral voltage-triggered switch belonging to the Teccor Kxxxzy SIDAC series. It operates in a TO-92 through-hole package with two leads. The device features a breakover voltage range of 110 V to 125 V and a rated repetitive off-state voltage of 100 V. It supports an RMS on-state current of 1 A and a non-repetitive peak on-state current of 20 A. The component maintains a low on-state voltage of 1.5 V, with a maximum holding current of 150 mA and a maximum breakover current of 10 uA. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Utilizes glass-passivated junctions for ruggedness and environmental dependability
• Exhibits negative resistance switching behavior to achieve low on-state voltage
• Designed as a bidirectional trigger device for AC circuit applications

Applications

• High voltage power supplies
• Natural gas igniters
• High-pressure Sodium lamps
• Xenon flash ignition systems

Procurement Notes

Verify the specific suffix E70RP against official Littelfuse documentation to confirm exact packaging or tape-and-reel specifications. Ensure the breakover voltage tolerance aligns with the design requirements for the target application circuit. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status.

Selection Notes

Select this component when a precise bilateral trigger voltage between 110 V and 125 V is required for AC protection or triggering circuits. The TO-92 package suits through-hole assembly processes. Verify that the 1 A RMS current rating meets the load demands and that the 100 V repetitive off-state voltage provides adequate margin for the operating environment.

Part Context

This part belongs to the Littelfuse Teccor Kxxxzy SIDAC family, which includes various breakover voltage variants such as K0900, K1300, and K2200. These devices share common electrical characteristics like 1 A RMS current and TO-92 packaging but differ primarily in their trigger voltage thresholds. The K1200 variant specifically targets mid-range voltage triggering needs within this standardized product line.

Replacement Considerations

Compatible substitutes include other Kxxxzy series parts with matching voltage ratings, such as K1100y or K1300y, provided the breakover voltage tolerances fit the circuit design. Verify pinout compatibility and thermal performance before substitution.