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Electronics => Repair => Topic started by: lionelkjh on December 23, 2024, 04:44:49 pm

Title: MULTIMETER FLUKE 79III
Post by: lionelkjh on December 23, 2024, 04:44:49 pm

Good evening everyone! I am trying to identify the 3-legged smd component marked "99" on the attached photo of the FLUKE79III electronic card .... I am also attaching the general photo of the multimeter ... Could someone help me?? Thank you for your patience and dedication. ;) ;)[attachimg=1][attachurl=1]

Title: Re: MULTIMETER FLUKE 79III
Post by: Kurets on December 23, 2024, 05:37:03 pm

I would expect BAV99 dual diode for some kind of clamping to rail. Not sure as it would require a bit more reverse engineering.

Title: Re: MULTIMETER FLUKE 79III
Post by: bdunham7 on December 23, 2024, 06:38:46 pm

Maybe one of these:

https://www.mouser.com/ds/2/348/ta115te-1144138.pdf?srsltid=AfmBOorylFTfy4NF8wXon6jhIjqR-98V7GoIDAnGMDe2VABJk1eTf_gN (https://www.mouser.com/ds/2/348/ta115te-1144138.pdf?srsltid=AfmBOorylFTfy4NF8wXon6jhIjqR-98V7GoIDAnGMDe2VABJk1eTf_gN)

Title: Re: MULTIMETER FLUKE 79III
Post by: lionelkjh on December 25, 2024, 04:22:08 pm

Thanks a lot! :-+ :-+ :-+

Title: Re: MULTIMETER FLUKE 79III
Post by: Psychodad49 on December 26, 2024, 09:09:57 am

I also have a Fluke 79III and opened it up. This is what the parts in my device look like, maybe this will help you.

Title: Re: MULTIMETER FLUKE 79III
Post by: lionelkjh on December 26, 2024, 06:12:56 pm

Good evening; thank you for your feedback! I think that it must be a DTA115 transistor.....Cdt ;)