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Unknown Diode
Unknown Diode
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Old 21st June 2018, 09:30 PM   #1
ManUtd is offline ManUtd  Norway
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Default Unknown Diode

Hope this forum can help me find out of this Diode.
On PCB it says D18 and with ordinary diode label on PCB with anode/kathode.
When i measure it with a multimeter it says Open both ways.

If anyone can recognise it i would be vary glad for any help.
Diode is suited in an sub amplifier(Class D) near a 2SK2698 Mosfet.
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Old 22nd June 2018, 08:52 AM   #2
Elvee is offline Elvee  Belgium
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My first guess would be a diac, but there are other possibilities: for example, I have seen thermistors and surge arrestors under the same guise.

If you draw the circuitry around, the function will probably become obvious.
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Old 22nd June 2018, 09:35 AM   #3
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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I would say a Diac.
BR100 or BR101
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Old 22nd June 2018, 12:55 PM   #4
davidsrsb is offline davidsrsb  Malaysia
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Possible, a DIAC would not conduct either way on a test meter.
What about the DB6, which would explain the blue stripe?

Last edited by davidsrsb; 22nd June 2018 at 12:59 PM.
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