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X0405MB is listed in the Scrs range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is 4 A SENSITIVE GATE SCR IN DPAK P. Review the specifications below when checking this part for your BOM.
The X0405MB is a single-directional silicon-controlled rectifier (SCR) manufactured by STMicroelectronics. It features a maximum repetitive off-state voltage of 600V and an RMS on-state current rating of 1.35A, with a maximum average on-state current of 900mA. The device requires a gate trigger voltage of 800mV and a gate trigger current of 50uA for activation.
Verify the specific suffix 'MB' against official STMicroelectronics documentation to confirm exact pinout, package type, and manufacturing lot details. Ensure compatibility with system thermal requirements given the 1.35A RMS rating. Cross-reference datasheet revisions to confirm parameter stability before finalizing procurement orders.
Select this component when a sensitive gate SCR is required for 600V applications with moderate current handling needs. The 50uA gate trigger current allows for direct interfacing with low-power logic or sensor outputs without additional amplification stages, simplifying circuit design compared to standard gate devices.
This part belongs to the X0405 series of SCRs from STMicroelectronics, which are engineered for general-purpose control tasks. The series offers variants with different voltage and current ratings, providing designers with flexible options for AC/DC control applications across industrial and consumer electronics sectors.
Direct substitutes include other 600V, 4A SCR models from STMicroelectronics such as the X0402MF or X0403MF, provided gate sensitivity and package dimensions match the original design constraints.
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