# What is the MTBF for the Logic Managert(LM)/IPC power supplies?

**URL:** <https://forumautomation.com/t/what-is-the-mtbf-for-the-logic-managert-lm-ipc-power-supplies/323>\
**Category:** Honeywell\
**Created:** [March 20, 2015, 9:56am UTC](https://forumautomation.com/t/what-is-the-mtbf-for-the-logic-managert-lm-ipc-power-supplies/323 "2015-03-20T09:56:33Z")\
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**Author:** ![instrumen](https://forumautomation.com/letter_avatar_proxy/v4/letter/i/65b543/32.png) [@instrumen](https://forumautomation.com/u/instrumen)\
**Post date:** [March 20, 2015, 9:56am UTC](https://forumautomation.com/t/what-is-the-mtbf-for-the-logic-managert-lm-ipc-power-supplies/323/1 "2015-03-20T09:56:34Z")

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620-0036 119000 hours (about 13.5 years); 621-9931 235000 hours (about 27 years) and 621-9934 330000 hours (about 37 years).