K1400S1URP

DIACs, SIDACs Overview

The Littelfuse K1400S1URP is a high-voltage trigger diode (SIDAC) from the Kxxx0yU series, designed for AC/DC circuit protection. It features a breakover voltage (VBO) of 140 V and a rated repetitive off-state voltage (VDRM) of 120 V. The device supports an RMS on-state current (It RMS) of 1 A and a non-repetitive on-state current of 20 A. It operates within a temperature range of -40°C to +150°C in a DO-214AC (SMB) surface-mount package.

DIACs, SIDACs Feature Summary

• Symmetrical bidirectional switching capability for overvoltage protection in AC circuits
• High thermal stability with a maximum operating temperature of +150°C
• Compact surface-mount design suitable for automated PCB assembly

DIACs, SIDACs Applications

• Surge protection for telecommunication lines
• Overvoltage protection in consumer electronics
• Triggering elements for thyristor-based protection circuits

DIACs, SIDACs Procurement Notes

Verify the specific suffix 'URP' against the official Littelfuse datasheet to confirm tape-and-reel packaging specifications. Ensure the ordering quantity aligns with manufacturer minimum order requirements for reel-packaged components. Cross-reference the Mouser part number 576-K1400S1URP for accurate distributor availability and lead times.

DIACs, SIDACs Selection Notes

Select this component when a 140 V breakover threshold is required for bidirectional surge suppression. Compare the 1 A RMS current rating against the peak load currents of the protected circuit. Consider the DO-214AC package dimensions for board space constraints relative to through-hole alternatives like the K1400G.

DIACs, SIDACs Part Context

This part belongs to the Teccor K-series SIDAC family, which provides silicon unilateral voltage-triggered switches optimized for rectified AC/DC circuits. The K1400S1URP shares functional characteristics with other K-series devices but differs in its specific breakover voltage and surface-mount packaging configuration.

DIACs, SIDACs Replacement Considerations

The through-hole K1400G offers identical electrical parameters but requires different mounting considerations. For direct surface-mount substitution, verify that alternative SIDACs from other manufacturers match the 140 V VBO and 1 A RMS current ratings precisely.