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Electronics => Repair => Topic started by: bettabowls on July 13, 2023, 08:55:14 pm

Title: Help Identify a Part
Post by: bettabowls on July 13, 2023, 08:55:14 pm
Can someone help me identify what this is. I'm guessing it's a fuse. It's markings are SE7 049
Title: Re: Help Identify a Part
Post by: madires on July 13, 2023, 09:17:15 pm
Yep, it's a thermal fuse.
Title: Re: Help Identify a Part
Post by: bettabowls on July 13, 2023, 11:07:10 pm
Thank you!

Is there anyway to check it's value? There's no markings on the unit. Also, the box it was in caught on fire and the fuse is covered in soot.
Title: Re: Help Identify a Part
Post by: fzabkar on July 14, 2023, 12:09:59 am
"049" could be a YWW (Year/Week) date code. Comparing it against the markings on other components should help to confirm this.
Title: Re: Help Identify a Part
Post by: madires on July 14, 2023, 11:36:49 am
Based on the size I'd guess its max current is roughly 1-3 A. And ESKA's E series (similar package) has also a one digit identifier for the temperature (E 7: 150 °C).
Title: Re: Help Identify a Part
Post by: bettabowls on July 14, 2023, 02:08:42 pm
It provides circuit protection for a 277 V AC light. Is 1 - 3 amps too low?
Title: Re: Help Identify a Part
Post by: madires on July 14, 2023, 04:05:24 pm
How much current does the light need?
Title: Re: Help Identify a Part
Post by: bettabowls on July 14, 2023, 05:10:38 pm
Looks like the ballast the drives the LEDs needs 630 mA. So I guess 1 - 3 amps would work!
Title: Re: Help Identify a Part
Post by: madires on July 14, 2023, 05:55:47 pm
If the blue disc-shaped components are MOVs then the thermal fuse should be their thermal protection. So 2-3A and 125 or 150°C might be fine. Also replace the MOVs in case they look too smoked.
Title: Re: Help Identify a Part
Post by: bettabowls on July 14, 2023, 06:07:23 pm
Yes! Ordering new MOVs too, thank you! Pretty much everything but the PCB will be replaced.