Acquired Electronics360

Aerospace

Quarter Bricks Target COTS, Harsh Environment Applications

07 July 2016

TDK Corporation has introduced the TDK-Lambda HQA120 isolated DC-DC converters. Rated at 120 W, the HQA120 has been qualified with methods consistent with MIL-STD-883 and MIL-STD-202, making it suitable for use in COTS and harsh environment industrial equipment. Initially available with 12 V, 24 V and 28 V outputs, the encapsulated quarter bricks accept a wide range of DC input from 9 V to 40 V, withstanding a 50-V surge for 10 seconds.

HQA120 DC/DC converters. Source: TDK-Lambda HQA120 DC/DC converters. Source: TDK-Lambda A choice of two grades is offered: –S for standard industrial applications, or –M using wide temperature, high-grade components and additional product testing for enhanced reliability. This includes functional testing at low, high and room temperatures, a 96-hour extended burn-in period and 10 temperature cycles. With typical efficiencies of up to 89%, internal heating is minimized, allowing the HQA converters to operate in high ambient temperatures of up to 115° C and a minimum of –55° C (M grade), or –40° C (S grade). Switching frequency is fixed at 270 kHz for simplified noise filtering.

The converter pinout follows the industry standard five-pin quarter brick footprint, featuring negative logic remote on/off and +/– remote sense. Two package styles are offered: a flanged type measuring 2.39 x 2.2 x 0.5 in. and a non-flanged version measuring 2.39 x 1.54 x 0.5 in.

Input-to-output and input-to-baseplate isolation is 2,250 Vdc (basic), and the converters are safety certified to UL/CSA/EN 60950-1 (2nd edition), carrying the CE mark in accordance with the LV Directive and RoHS Directives.



Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Advertisement
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter
Advertisement

CALENDAR OF EVENTS

Date Event Location
22-24 May 2018 Los Angeles, CA
04-07 Jun 2018 Boston, MA
06-08 Jun 2018 Los Angeles, CA
18-22 Jun 2018 Honolulu, Hawaii
12-16 Aug 2018 Vancouver, Canada
Find Free Electronics Datasheets
Advertisement