Aliso Viejo, Calif. − Microsemi Corp. has debuted two plastic large area device (PLAD) transient voltage suppression (TVS) diode products that protect aircraft electrical systems from transient lightning strikes. The 6.5-kW and 7.5-kW devices are the latest addition to Microsemi's PLAD TVS product portfolio and feature 50 percent smaller footprints than the company's current 15-kW and 30-kW solutions.
The TVS diodes are available in voltages ranging from 10 volts (V) to 48V and comply with industry-standard RTCA DO-160 requirements for lightning protection in aircrafts.
The devices are housed in Microsemi's proprietary low-profile PLAD surface mount package, which allows product developers to reduce board space and overall component weight, said Microsemi. The rugged package offers high surge capabilities. Moisture Classification is Level 1 with no dry pack required per IPC/JEDEC J-STD-020.
The TVS diodes protect aircraft electrical systems by going into avalanche breakdown within no more than a few nanoseconds after a strike, clamping the transient voltage and routing its current to the ground. The integrated, single-component diodes are more reliable than alternative multiple-device solutions, making them suitable for demanding aviation, military, automotive and industrial applications, according to Microsemi.
"The trend towards aircraft electrification, greater reliability and higher fuel efficiency is on the rise, which is driving the need for increasingly robust, lighter and smaller TVS solutions that provide superior protection against transient over-voltage occurrences," said Durga Peddireddy, director of marketing and applications for Microsemi's High Reliability Group, in a statement.
All of Microsemi's PLAD packaged devices are 100 percent surge tested and can be supplied in various 'screened' versions (M, MA, MXL and MX) that have been exposed to various levels of additional screening tests (similar to those applied to JANTX military grade devices) to improve reliability. Material and manufacturing changes are made only under a process change notification process with the customer, said Microsemi. The devices are halogen-free.
Availability: The 6.5-kW and 7.5-kW series TVS diodes are available in all screening levels.
Pricing: Starts at $2.49 in quantities of 10,000.