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TS420-400B-TR is listed in the Scrs range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is SCR 400V 4A DPAK. Review the specifications below when checking this part for your BOM.
Scrs specifications for TS420-400B-TR
- Description：SCR 400V 4A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：30A, 33A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：2.5 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：5 µA
Scrs datasheet and documents for TS420-400B-TR
Scrs Overview
The TS420-400B-TR is a sensitive gate Silicon Controlled Rectifier (SCR) manufactured by STMicroelectronics. It features a repetitive peak off-state voltage of 400 V and an on-state RMS current rating of 4 A. The device utilizes a highly sensitive triggering mechanism with a maximum gate trigger current of 0.2 mA, making it suitable for applications with limited gate drive capability. It is housed in a surface-mount DPAK package.
Scrs Feature Summary
- Highly sensitive gate triggering for low-current control applications
- Optimized performance within a compact surface-mount footprint
- Designed for reliable operation in space-constrained environments
Scrs Applications
- Motor control for hand tools
- Kitchen aid motor drives
- Overvoltage crowbar protection for low power supplies
Scrs Procurement Notes
Verify the specific suffix 'B' against official datasheets to confirm package and marking details. Ensure the 400V voltage rating aligns with circuit requirements. Confirm RoHS compliance status through the manufacturer's latest documentation before procurement.
Scrs Selection Notes
Select this component when gate drive current is restricted below standard SCR thresholds. The 4A RMS rating suits moderate load applications. Verify thermal management capabilities for the DPAK package under continuous operating conditions.
Scrs Part Context
This part belongs to the TS420 family of AC switches. These devices are engineered for high sensitivity and robustness in small packages. They serve as alternatives to traditional SCRs where space and low gate current are critical design constraints.
Scrs Replacement Considerations
Cross-reference with other TS420 variants such as TS420-600B-TR for higher voltage ratings. Verify pinout compatibility and thermal characteristics when substituting with similar 4A sensitive gate SCRs from other manufacturers.
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