Author Topic: Unknown SOT-23 devices, lost cause?  (Read 1540 times)

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Offline PeterFWTopic starter

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Unknown SOT-23 devices, lost cause?
« on: March 18, 2015, 01:21:37 am »
Hello!
Most likely this is futile but i will try, google dit not help me, i got a couple of SOT-23 parts:



The only things to measure i have are a multimeter and a DSO,
my meter says:

GHMH9: 2 <> 3 shorted

H9LF4: 2 <> 3 shorted

S7W5: 2 <> 3 shorted and anode on pin 1, kathode pin 2 with 0,51V UF

The others do not show annything, before i try to determine by try and error what they might be, i thought i ask here.
Annyone seen one of these before, i can not remember what they are.
They were in an order from a local supplyer, years ago.
They must be different types of FETs, two of em may be JFETs.

Greetings,
Peter
 

Offline T3sl4co1l

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Re: Unknown SOT-23 devices, lost cause?
« Reply #1 on: March 18, 2015, 03:47:13 am »
E4L = BAT54 http://www.s-manuals.com/pdf/datasheet/b/a/bat54_utc.pdf
S7W = maybe BF511?  Something by Rohm?  Not sure.
SA = but, that doesn't look like an "A"... not sure what that is.
Can't find anything on the HMHS or H9LF4.

I probably shouldn't transcribe these numbers because now this thread will be the only thing that ever shows up in searches for those parts.  http://xkcd.com/979/

Tim
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Offline Macbeth

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Re: Unknown SOT-23 devices, lost cause?
« Reply #2 on: March 18, 2015, 03:50:19 am »
SA could be BSS123 MOSFET
 


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