BT151S-650L,118

Scrs Overview

The BT151S-650L,118 is a planar passivated Silicon Controlled Rectifier (SCR) manufactured by WeEn Semiconductors. It is housed in a SOT428 (DPAK/TO-252) surface-mountable plastic package designed for applications requiring sensitive gate triggering, high bidirectional blocking voltage capability, high surge current handling, and robust thermal cycling performance. Key electrical parameters include a repetitive peak off-state voltage (VRRM/VDRM) of 650 V, an average on-state current (IT(AV)) of 7.5 A, and an RMS on-state current (IT(RMS)) of 12 A. The device supports a non-repetitive peak on-state current (ITSM) of 120 A, with a maximum gate trigger current (IGT) of 15 mA and a critical rate of rise of off-state voltage (dVD/dt) of 200 V/µs. The maximum junction temperature (Tj) is rated at 125 °C, and the component holds industrial qualification.

Scrs Feature Summary

• Planar passivated silicon construction providing high bidirectional blocking voltage capability
• Sensitive gate design enabling reliable triggering with low gate current requirements
• High surge current capability suitable for demanding power switching environments
• Surface-mount DPAK package optimized for high thermal cycling performance

Scrs Applications

• Industrial motor control systems
• Solid-state relay circuits
• General purpose AC power switching applications

Scrs Procurement Notes

Verify the complete orderable part number includes the packing suffix, such as BT151S-650L,118, to confirm reel packaging specifications. Ensure compatibility with RoHS compliance standards and lead-free plating requirements specified for volume production units. Confirm moisture sensitivity level (MSL1) handling procedures are followed during assembly to maintain component integrity.

Scrs Selection Notes

Select this component when a surface-mount SCR with a 650 V blocking voltage and 12 A RMS current rating is required. The TO-252 package offers a compact footprint compared to through-hole alternatives like the BT151-650L. Consider the 120 A surge capability and 125 °C junction temperature limit for thermal management planning in dense PCB layouts.

Scrs Part Context

This device belongs to the BT151S series of surface-mount SCRs from WeEn Semiconductors. It shares the same electrical characteristics as the through-hole BT151-650L but utilizes a DPAK package for automated assembly. The series is designed for industrial applications requiring reliable phase control and power switching in space-constrained designs.

Scrs Replacement Considerations

The through-hole equivalent BT151-650L offers identical electrical ratings but requires different mounting techniques. For direct surface-mount substitution, verify pinout compatibility between DPAK variants. Cross-reference with other 650 V, 12 A SCRs only if package constraints allow.