What is this -OI- ?

Bernhard · 29th January 2007, 03:14 PM

This -OI- is printed on a pcb under a diode. Zener ?

janneman · 29th January 2007, 03:18 PM

Could it be a - stylized - indication of polarity, O = anode, | = kathode?

Jan Didden

Bernhard · 29th January 2007, 04:12 PM

There are also standard symbols for diode and zener on the pcb, it is Sony.

I_Forgot · 29th January 2007, 09:57 PM

Isn't that a symbol for a current source diode (essentially a JFET with the gate and source leads internally connected)?

I_F

unclejed613 · 30th January 2007, 04:57 AM

yes that's a current source "diode" symbol..... what's the part number on the component?

Bernhard · 30th January 2007, 09:42 AM

YD13

Can not find it on

http://www.datasheet.org.uk/datasheet-mc.html

http://www.alldatasheet.com/

Any more good & free datasheet sites ?

Limhes · 30th January 2007, 10:03 AM

Bernhard · 30th January 2007, 03:47 PM

Hmmm it looks like a current source diode, it is in series with a zener between V- and ground.

29th January 2007, 03:14 PM	#1
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	What is this -OI- ? This -OI- is printed on a pcb under a diode. Zener ?

29th January 2007, 03:18 PM	#2
janneman diyAudio Member Join Date: May 2002 Location: Where Germany, The Netherlands and Belgium meet Blog Entries: 6	Could it be a - stylized - indication of polarity, O = anode, \| = kathode? Jan Didden __________________ /Another new issue: Linear Audio Volume 3!

30th January 2007, 04:57 AM	#5
unclejed613 diyAudio Member Join Date: Dec 2006	yes that's a current source "diode" symbol..... what's the part number on the component? __________________ Vintage Audio and Pro-Audio repair ampz(removethis)@sohonet.net spammer trap: http://www1284177414881.v-dc.net/

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29th January 2007, 04:12 PM	#3
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	There are also standard symbols for diode and zener on the pcb, it is Sony.

29th January 2007, 09:57 PM	#4
I_Forgot diyAudio Member Join Date: Jan 2005 Location: Phoenix, Az.	Isn't that a symbol for a current source diode (essentially a JFET with the gate and source leads internally connected)? I_F

30th January 2007, 09:42 AM	#6
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	YD13 Can not find it on http://www.datasheet.org.uk/datasheet-mc.html http://www.alldatasheet.com/ Any more good & free datasheet sites ?

30th January 2007, 10:03 AM	#7
Limhes diyAudio Member Join Date: Apr 2005 Location: Nijmegen!	http://www.datasheetcatalog.com/data.../1/BYD13.shtml BYD13: Controlled avalanche rectifier

30th January 2007, 03:47 PM	#8
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	Hmmm it looks like a current source diode, it is in series with a zener between V- and ground.

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