K2501GLRP

Overview

The K2501GLRP is a high-voltage trigger diode (SIDAC) manufactured by Littelfuse under the Multipulse/Teccor brand. It is designed for metal-halide and high-pressure sodium lamp ignition circuits in outdoor lighting applications. The device operates in a DO-15 axial leaded package with through-hole mounting. Key electrical parameters include a repetitive off-state blocking voltage (VDRM) of 200 V, a breakover voltage (VBO) of 265 V, and a maximum breakover current (IBO) of 10 uA. It supports an RMS on-state current (It RMS) of 1 A and a non-repetitive on-state current of 20 A. The holding current (Ih) maximum is 30 mA, with an on-state voltage of 3 V. The component functions reliably at maximum operating temperatures up to +90 C.

Feature Summary

• Voltage switch design optimized for generating multiple pulses per half-cycle of 50/60 Hz line voltage
• Robust solid-state construction capable of handling junction temperatures up to 125°C during lamp igniter operations
• Excellent commutation time suitable for demanding ambient temperature environments

Applications

• Metal-halide lamp ignition circuits
• High-pressure sodium lamp ignition circuits for outdoor street and area lighting

Procurement Notes

Verify the specific Littelfuse datasheet for the Kxxx1GL series to confirm RoHS compliance status and REACH SVHC details before integration. Ensure the procurement channel provides original manufacturer documentation to validate the part number authenticity and manufacturing origin. Cross-reference the DO-15 package dimensions against the target PCB layout requirements to guarantee mechanical fitment.

Selection Notes

Select this component when designing ignition circuits for metal-halide or high-pressure sodium lamps requiring a robust voltage switch. The 200 V VDRM and 265 V VBO ratings define the triggering threshold. Consider the 1 A RMS current capacity and thermal limits up to 90 C ambient temperature. The DO-15 package dictates through-hole assembly constraints. Evaluate if the specific Multipulse SIDAC characteristics align with the required commutation speed for the application.

Part Context

The K2501GLRP belongs to the Kxxx1GL series of Multipulse SIDACs from Littelfuse's Teccor brand. This family of devices is specifically engineered for lamp ignition applications where reliable multi-pulse generation is critical. The series utilizes a glass-passivated junction technology housed in a DO-15 axial leaded package, distinguishing it from surface-mount transient suppressors or standard thyristors within the broader Littelfuse portfolio.

Replacement Considerations

Consult the official Littelfuse Kxxx1GL series datasheet for direct cross-references. Verify that any substitute maintains the 200 V minimum VDRM, 265 V typical VBO, and DO-15 package form factor to ensure compatibility with existing lamp igniter circuit designs.