K2500GHURP

Overview

The Littelfuse K2500GHURP is a high-voltage trigger diode (SIDAC) designed for robust circuit protection. It operates within a breakover voltage range of 240 V to 280 V and features a maximum repetitive off-state voltage of 200 V. The device supports an RMS on-state current of 1 A and can withstand non-repetitive peak currents up to 20 A. Packaged in a DO-15 axial leaded format, it functions reliably across a temperature range of -40°C to +125°C junction temperature. Key electrical parameters include a holding current maximum of 150 mA and a low on-state voltage of 1.5 V.

Feature Summary

• Bilateral voltage-triggered switching capability with negative resistance characteristics
• Glass-passivated junctions ensuring long-term reliability and stable performance
• High energy handling capacity suitable for surge suppression applications

Applications

• Surge protection circuits for telecommunications equipment
• Triggering devices for silicon-controlled rectifiers (SCRs)
• Overvoltage protection in AC power line interfaces

Procurement Notes

Verify the specific suffix 'RP' against the official Littelfuse datasheet to confirm if it denotes a specific tape-and-reel packaging variant or a distinct qualification standard compared to the bulk K2500GHU. Ensure the ordering documentation explicitly references the K2500GHURP part number to avoid substitution errors with standard bulk packages.

Selection Notes

Select this component when a bilateral switch with a 240V to 280V breakover threshold is required. The DO-15 package provides adequate thermal mass for 1 A RMS operation. Verify that the application's peak transient currents do not exceed the 20 A non-repetitive limit to prevent device failure.

Part Context

This part belongs to the Littelfuse SIDAC family, which offers higher power-handling capabilities than standard diacs. The K2500 series is specifically engineered for high-energy discharge events, providing a rugged barrier against junction damage through its glass-passivated construction technology.

Replacement Considerations

Direct substitutes may include the K2500GHU or K2500G from Littelfuse, provided the packaging difference (bulk vs. reel) is acceptable. Cross-manufacturer equivalents must match the 240-280V breakover voltage and DO-15 form factor.