K1050E70

Overview

The Littelfuse K1050E70 is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage (VBO) range of 95 V to 113 V and a repetitive peak off-state voltage (VDRM) of 90 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 50/60 Hz with a junction temperature below 125°C. Key electrical parameters include a maximum dynamic holding current (IH) of 150 mA, a peak on-state voltage (VTM) of 1.5 V, and a breakover current (IBO) of 10 μA. It operates within a junction temperature range of -40°C to 125°C and is housed in a TO-92 package.

Feature Summary

• Utilizes glass-passivated junctions for ruggedness and dependability in harsh environments.
• Provides AC circuit-oriented triggering with a symmetrical bilateral switching characteristic.
• Switches on through a negative resistance region to a low on-state voltage upon exceeding the breakover point.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'E70' corresponds to the TO-92 package with Type 70 lead form when sourcing. Confirm RoHS compliance status via the manufacturer's latest documentation, as specifications are subject to change without notice. Ensure the procurement channel provides valid traceability data matching the Littelfuse part number K1050E70.

Selection Notes

Select this component when a breakover voltage between 95 V and 113 V is required for AC triggering applications. The TO-92 package is suitable for through-hole mounting where space allows. Ensure the circuit design accounts for the 1 A RMS current rating and the 150 mA holding current to maintain stable conduction during operation.

Part Context

The K1050E70 belongs to the Kxxxzy series of Standard Bidirectional SIDACs manufactured by Littelfuse. This series includes various voltage ratings ranging from 79 V to 330 V. The 'K1050' designation specifically indicates the 95 V to 113 V breakover voltage range, while the 'E70' suffix identifies the TO-92 package configuration.

Replacement Considerations

Other parts in the Kxxxzy series with different voltage ratings, such as K0900E70 or K1100E70, may serve as functional substitutes if the trigger voltage requirements align with the application needs. Ensure the replacement maintains the same TO-92 package and electrical characteristics like IT(RMS) and IH.