US-based semiconductor solutions provider Microsemi has introduced two transient voltage suppressor (TVS) devices to protect aircraft from lightning strikes.
Available in plastic large area device (PLAD) package, the two devices – 15kW MPLAD15KP and 30-kW MPLAD30KP TVS – offer lightning-protection advancements such as the multi-stroke standard (RTCA DO-160E).
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With no impact to electrical or thermal performances, the devices come in a surface-mount package and are compatible with the earlier version of Microsemi’s PLAD packaged TVS parts.
Microsemi’s high-reliability products marketing director Durga Peddireddy said re-engineering the PLAD package would allow the company to provide a reliable solution that lowers TVS protection costs by about 20%.
"Our single component solution saves board space, lowers weight and improves reliability over the multi-device designs often used to provide these high levels of protection," Peddireddy said.
PLAD design enables aircraft operators to lower the voltage surge protection costs, besides preventing interruptions in digital signal processing, component damage and function disruption due to inductive load dumps, or any other indirect impact due to lightning strikes.
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By GlobalDataThe package features a combined large die and a bottom-side metal slug for heat sinking, which boosts power handling compared with through-hole packaged designs; it is also compatible with standard surface-mount assembly automation.
The 15kW line operates between 7V and 200V range, while the 30kW family operates from 14V to 400V range.
Available in unidirectional and bi-directional variants, the parts are halogen-free, meet MSL level 1 industry standards and can be supplied in RoHS-compliant form or with tin-lead plating, the company claimed.
As well as from TVS devices, Microsemi’s aviation portfolio includes field programmable gate arrays (FPGAs), integrated circuits (ICs), power modules, power supplies, radio frequency, microwave and millimetre wave solutions, as well as high-reliability non-semiconductor devices.
