Aerospace & Defence

Higher rating achieved on military RF inductors

13th October 2015
Jordan Mulcare

Gowanda Electronics has announced achievement of failure rate Level R on two more of its MIL-PRF-39010 RF inductor series, ER15M and ER18M, adding to the company’s series already approved to Level R, ER10M and ER17S. These four thru-hole series meet the military’s Qualified Product List (QPL) requirements for Established Reliability (ER) and address 10 different MIL-PRF-39010 slash numbers (/01 through /10).

This approval required extensive testing for electrical, environmental, mechanical and thermal performance. Level R represents the most reliable off-the-shelf inductors for high-reliability applications.

Gowanda’s 'ER' series are designed for RF applications in military, aerospace and space, including defence and NASA communities. This includes use in communication, guidance and security applications, as well as in radar, test & evaluation and special mission applications.

These four ER series were initially introduced with Level M approval. As part of the company’s commitment to the military market, Gowanda pursued the testing required to attain higher level approvals, first achieving Level P and now Level R, on all four series. Level R represents a 100 times increase in reliability over the initial Level M rating. Gowanda’s four series have cumulatively exceeded 45m unit hours of testing.

The overall performance range provided by the four series includes inductance from 0.1 to 1,000uH, minimum Q from 25 to 75, minimum SRF from 3.4 to 680MHz, maximum DCR from 0.025 to 72Ω and DC current rating from 28 to 2,900mA.

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