The BOURNS TBU-CA040-200-WH is a bidirectional Transient Blocking Unit (TBU) designed to protect sensitive electronic components from damaging voltage transients. With a maximum voltage rating of 400V, it effectively clamps transients above this level to protect downstream circuitry.The TBU-CA040-200-WH features a 200V working voltage, allowing it to be used in a wide range of applications. Its fast response time of 1 microsecond ensures prompt protection when transients occur.This component is packaged in a compact DFN (Dual Flat No-Lead) surface mount package, making it suitable for high-density circuit board designs. It is supplied in tape and reel packaging for ease of assembly in production.Overall, the BOURNS TBU-CA040-200-WH is a reliable and versatile transient blocking solution that helps safeguard electronic devices and systems from voltage surges and transients.