K2400GHURP

Overview

The Littelfuse K2400GHURP is a high-voltage trigger diode (SIDAC) belonging to the K2xx0yHU series, designed for transient voltage suppression in surface-mount applications. It features a bidirectional switching characteristic within the DO-214AA (SMB) package. Key electrical parameters include a breakover voltage (VBO) range of 220 V to 250 V and a maximum holding current (Ih) of 60 mA. The device supports an RMS on-state current (It RMS) of 1 A and can withstand non-repetitive peak currents up to 20 A. It operates reliably across a temperature range of -40°C to +125°C, with a rated repetitive off-state voltage (VDRM) of 190 V.

Feature Summary

• Bidirectional high-energy surge protection capability for sensitive circuitry
• Surface-mount construction utilizing the DO-214AA (SMB) footprint for automated assembly
• High thermal stability enabling operation at junction temperatures up to 125°C
• Low holding current design to ensure reliable latching and turn-off characteristics

Applications

• Transient voltage suppression in AC mains-powered equipment
• Protection interfaces for smart home and IoT devices
• Surge protection stages in industrial control systems
• Overvoltage protection for communication line inputs

Procurement Notes

Verify the specific suffix URP against the manufacturer's latest datasheet to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the selected component matches the required breakover voltage tolerance for the target application. Cross-reference the DO-214AA footprint dimensions with PCB layout guidelines to guarantee proper soldering and mechanical retention during assembly processes.

Selection Notes

Select this component when a bidirectional trigger device is required for surface-mount designs needing robust surge handling. Compare the 220 V to 250 V breakover range against the system's maximum continuous operating voltage to prevent false triggering. Evaluate the 1 A RMS current rating against potential fault currents to ensure adequate energy absorption without device failure.

Part Context

This part belongs to Littelfuse's SIDAC family, which provides cost-effective overvoltage protection compared to TVS diodes. The K2400GHURP variant specifically adapts the through-hole K2400GH performance into a surface-mount form factor. This lineage ensures consistent switching characteristics while allowing for compact PCB integration in modern electronic assemblies requiring high reliability.

Replacement Considerations

Direct substitutes include other SIDACs in the DO-214AA package with similar VBO ranges, such as the STMicroelectronics LTV05 or Nexperia variants. Verify that any replacement maintains the 1 A RMS current rating and 125°C operating temperature limit. Ensure bidirectional functionality is preserved if used in AC circuits.