Littelfuse has introduced a tailored screening and sorting process for high-reliability TVS diodes, designed to meet the stringent demands of critical applications. These diodes are essential in protecting sensitive electronic systems from voltage surges caused by lightning strikes, electrostatic discharges, and other transient events. The new process ensures that components are rigorously tested and classified for use in avionics DC line protection and other high-reliability environments.
In addition to this customized approach, Littelfuse offers four "off-the-shelf" high-reliability transient suppression diodes: the SMCJ-HR Series, SMCJ-HRA Series, SMDJ-HR Series, and SMDJ-HRA Series. These options provide flexibility for engineers who need reliable solutions without the need for extensive customization.
Littelfuse's high-reliability TVS diodes are widely used in aerospace applications such as fly-by-wire systems, engine control units, power distribution systems, cabin electronics, air conditioning, in-vehicle infotainment, radar systems, and advanced airborne computers. They are also suitable for military, industrial, and medical equipment where performance and reliability are paramount.
According to Charlie Cai, Global Product Manager for High Reliability and Automotive Transient Suppression Diodes at Littelfuse, “Previously, high-reliability TVS diodes were considered special-order products. End users had to send commercial-grade components to third-party labs for additional screening, which increased lead times and costs significantly.†He added, “With our new customizable upgrade screening and sorting process, customers can now get high-quality, reliable components faster and more cost-effectively.â€
Key features of these high-reliability TVS diodes include:
- A military-grade marking process that ensures compliance with aviation, military, industrial, and medical standards
- Customizable screening processes to support a wide range of applications
- Standard voltage and power ratings that make integration into designs easier, especially for aerospace systems following RTCA/DO-160 guidelines
- Rigorous testing for aviation market applications
Samples of the SMCJ-HR, SMCJ-HRA, SMDJ-HR, and SMDJ-HRA series are currently available. Engineers and designers can obtain samples through authorized Littelfuse distributors worldwide, making it easier than ever to evaluate these high-performance components for their next project.
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