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Yes, Bluejets, you are right, but in this instance, it's obvious that it's not a rectifier. I jumped to conclusions...This board is a part of the Caterpillar control system. The board number is CAT 106-1154. Does anybody have any insight on this board?Thought you might show where it comes from or what piece of equipment.
Just because the Anode is connected to ground doesn't necessarily make it a zener.
Prime example is in a bridge rectifier.
Thank you for your in-depth explanation. I am sure that somebody new to this field will benefit from it. As for me, I am an electronics repairs technician for the last six years, so I know this stuff. The board doesn't have any designators; in fact, it doesn't have any silk screen. The only symbols (generic diode and the "+" signs next to capacitors) are etched from the copper plane and are (I feel) for polarity only rather than any specific markings.In addition to the above stated excellent information
The schematic symbol for the zener diode is
View attachment 57968
While the silk screen designation on the printed circuit board proximal to the mystery component is.
View attachment 57969
It's very good chance it's a house number cuz I can't find it.
Could be, but I think that this board is far from the type of sensitivity this would warrant. This board is a part of the Caterpillar in-cabin control display (a bunch of alarms lights and displays).Could be a transient absorber rather than a zener - particularly if it's connected to ground at one end.
I could definitely be mistaken considering the horrible photographs taken of the unit. My apologies.Thank you for your in-depth explanation. I am sure that somebody new to this field will benefit from it. As for me, I am an electronics repairs technician for the last six years, so I know this stuff. The board doesn't have any designators; in fact, it doesn't have any silk screen. The only symbols (generic diode and the "+" signs next to capacitors) are etched from the copper plane and are (I feel) for polarity only rather than any specific markings.
Absolutely on offense taken. I understood that you wanted to benefit some members of this forum who were possibly new to the field of electronics. Your explanation was good, and I would do the same. The diode's very bad quality (dark) photos are due to the markings being barely readable, so I had to play with lighting to show anything.I could definitely be mistaken considering the horrible photographs taken of the unit. My apologies.
I wasn't trying to beat you up. I'm sorry you took it that way.
Behavior and actions reflect my own character my gratitude for your helpful criticism. I must reassess my behaviorAbsolutely on offense taken
Can you trace out the cathode end of it? Where does the supply come from, where does it go and any components 'inbetween'? You don't need to dig too deep to discover this but if the cathode end goes to the supply without going via a series resistor then it's a transient absorber (my guess). <edit>transient voltage suppressor.... got the name 'wrong'.It's most likely a Zener since it was connected with the anode to the ground.
Hi, I have the same problem. Did you manage to resolve this?Here are 3 photos, although I really don't know what new this might give you.