µa78hg

runebivrin · 9th August 2004, 10:06 PM

While rummaging my box of goodies, I've come across a couple of the above. They are 4 terminal power regulators, but I can't find any information about them beyond that. They're well over 15 years old, but unused. Anybody has a datasheet?

Rune

moamps · 9th August 2004, 10:18 PM

Regulator IC Data - LAS19U

Regards
Milan

runebivrin · 9th August 2004, 10:44 PM

Thanks!

I did search, but UA78HG turned up no matches, so it would seem you're out of luck searching for partial words.

Rune

hjelm · 10th August 2004, 09:12 AM

According to this site.
Italian seller

It is a positive variable regulator 5A if it is in a To-3 capsule.
They seem quite expensive 34.70 €.

According to this site though Malaysian lecture
The 78HG is a 500mA device ???

edit:Sorry didn't read the link carefully enough no news here.

Dominique · 10th August 2004, 10:11 PM

oups, I thought that the µa78 was a ldo device from TI.

runebivrin, did you watch out for a manufacturer's logo? Mostly, you could find a logo like an f for Fairchild, on for onsemi, N for National and so on...
With a logo you could guess which is the manufacturer, cause it's better to get the manufacturers datasheet than that of another manufacturer who possibly makes the same device (but possibly with slightly different specs).

Good luck
Dominique

9th August 2004, 10:06 PM	#1
runebivrin diyAudio Member Join Date: Jul 2003 Location: Huddinge, Sweden	µa78hg While rummaging my box of goodies, I've come across a couple of the above. They are 4 terminal power regulators, but I can't find any information about them beyond that. They're well over 15 years old, but unused. Anybody has a datasheet? Rune __________________ Do wizards use spell checkers?

9th August 2004, 10:44 PM	#3
runebivrin diyAudio Member Join Date: Jul 2003 Location: Huddinge, Sweden	Thanks! I did search, but UA78HG turned up no matches, so it would seem you're out of luck searching for partial words. Rune __________________ Do wizards use spell checkers?

10th August 2004, 09:12 AM	#4
hjelm diyAudio Member Join Date: Nov 2003 Location: Västerås	According to this site. Italian seller It is a positive variable regulator 5A if it is in a To-3 capsule. They seem quite expensive 34.70 €. According to this site though Malaysian lecture The 78HG is a 500mA device ??? edit:Sorry didn't read the link carefully enough no news here. __________________ Hjelm

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9th August 2004, 10:18 PM	#2
moamps diyAudio Member Join Date: Oct 2002 Location: Croatia	Regulator IC Data - LAS19U Regards Milan

10th August 2004, 10:11 PM	#5
Dominique diyAudio Member Join Date: Jul 2004 Location: Berlin	oups, I thought that the µa78 was a ldo device from TI. runebivrin, did you watch out for a manufacturer's logo? Mostly, you could find a logo like an f for Fairchild, on for onsemi, N for National and so on... With a logo you could guess which is the manufacturer, cause it's better to get the manufacturers datasheet than that of another manufacturer who possibly makes the same device (but possibly with slightly different specs). Good luck Dominique