help about this diode

[ET200]

hi everybody
i have problem with knowing this diode (in attached). what kind of diodes? schottky? printed code in its body is j 8j i cant understand this.
thank u for your help

 

[davenn]

hi everybody
i have problem with knowing this diode (in attached). what kind of diodes? schottky? printed code in its body is j 8j i cant understand this.
thank u for your help

I recognise the style, but it is used by many varieties of diodes

so more info from you ....
1) what did it come from, make and model of gear
2) show a photo of the circuit board showing the diode position
3) have you got or looked for a schematic of the unit ?

 

[Audioguru]

Measure its forward voltage with the "diode test" on a multimeter.
If the measurement is 0.5V to 0.6V then it is a silicon rectifier. If it is 0.15V to 0.3V then it is Schottky.

 

[ET200]

thank you for your reply.
i attached photo of PCB , D5 is my problem. it used in power supply 110 v ac to DC(measured 150 v dc) for energize an air circuit breaker. this diode use inverse in output to damp spike voltage that create when voltage will be falling (off breaker command). now this diode was damage and i want to replace with another diode.now i can't identify this diode for find same type. i don't have schematic. sorry for my Sentences, English is not my first language.

 

[ET200]

Measure its forward voltage with the "diode test" on a multimeter.
If the measurement is 0.5V to 0.6V then it is a silicon rectifier. If it is 0.15V to 0.3V then it is Schottky.

thank you for your reply. diode was damage. in fact Two pieces have been made, and made short circuit in out put.i removed it and circuit work properly.

 

[Terry01]

Measure its forward voltage with the "diode test" on a multimeter.
If the measurement is 0.5V to 0.6V then it is a silicon rectifier. If it is 0.15V to 0.3V then it is Schottky.

Yearly good info for beginners! These things stick for me somehow. I will remember this. Thanks for the knowledge.