BT151X-650C,127

Scrs Overview

The BT151X-650C,127 is a planar passivated Silicon Controlled Rectifier (SCR) manufactured by WeEn Semiconductors. It is housed in a SOT78 plastic package and designed for applications requiring sensitive gate triggering, high bidirectional blocking voltage capability, and high thermal cycling performance. The device features a repetitive peak reverse/direct off-state voltage of 650 V, an average on-state current of 7.5 A, and an RMS on-state current of 12 A. Key electrical parameters include a maximum gate trigger current of 5 mA, a non-repetitive peak on-state current of 120 A, a critical rate of rise of off-state voltage of 200 V/µs, and a maximum junction temperature of 125 °C.

Scrs Feature Summary

• Planar passivated silicon construction for robust operation
• Sensitive gate design with low trigger current requirements
• High bidirectional blocking voltage capability
• Designed for high thermal cycling performance

Scrs Applications

• Industrial control systems
• Lighting dimmers
• Motor speed controls
• General purpose switching applications

Scrs Procurement Notes

Verify the specific suffix 'C' against official manufacturer documentation to confirm exact pinout and mechanical dimensions, as variations within the BT151 family may exist. Ensure the ordering part number matches the required package style and compliance standards. Cross-reference the 12NC code with the latest datasheet to avoid discrepancies between legacy and updated component revisions.

Scrs Selection Notes

Select this component when a through-hole SCR with high bidirectional blocking voltage and sensitive gate characteristics is required. The TO-220 package provides adequate thermal management for moderate power applications. Compare the 650 V rating and 12 A RMS current against circuit demands to ensure sufficient margin. Consider the 125 °C junction temperature limit for high-temperature environments.

Scrs Part Context

This component belongs to the BT151 series of Silicon Controlled Rectifiers from WeEn Semiconductors. The series offers various voltage ratings and packaging options to suit different industrial and consumer applications. The BT151X variant typically denotes specific package or performance enhancements within the broader product line, focusing on reliability and thermal stability.

Scrs Replacement Considerations

Official substitute part numbers are not confirmed in the provided source material. Consult the manufacturer's replacement guide or equivalent parameter matching for cross-referencing.