I have salvaged some parts that I can't identify myself. I would appreciate it if someone could tell me what they are called so I can look them up.

I took some better photos of the first 3 parts, and added a 7th at the bottom. Sorry about #3, but it is convex from all sides, and I don't have a light diffusor (yet).

part 1 better1: 1

part 2 better2: 2

enter image description here3: 3

4: 4

5: 5

6: 6

part 7

Sorry for the low quality of the photos. I'll get better with more experience with my camera.

  • \$\begingroup\$ My guess, in order from top to bottom: Unknown; some kind of diode; 4MHz ceramic resonator; Unknown; Unknown; 1KV MOV, or 1KV rated 10pf ceramic capacitor. Most of them look like they come from overload protection circuitry - often seen on telephony interfaces, like ADSL. \$\endgroup\$
    – Majenko
    Jun 21, 2014 at 16:37
  • \$\begingroup\$ Could the first one be an inductor? \$\endgroup\$
    – piyush
    Jun 22, 2014 at 9:26
  • \$\begingroup\$ My votes: 1. inductor; 2. diode, or if the outer bands are equally wide it may be a DIAC; 3. 4MHz resonator; 4. diode (partial partnumber BYV); 5. filter or resonator; 6. capacitor; Where did you find them? \$\endgroup\$
    – jippie
    Jun 22, 2014 at 10:07

1 Answer 1


I suspect the first one is a light detector of some sort.

From the size of its leads, the second one looks like a Zener diode, but for sure it's a diode of some kind.

The third one is a 4.0 MHz ceramic resonator with internal caps for use in a Pierce oscillator.

From the "BYV" legend on the fourth one, it's a high-speed rectifier of some sort. The rest of the legend would probably single it out.

The fifth one, a transistor? a dual diode? ???

The sixth one is a 10pF 1kV ceramic capacitor

Views showing more legending would be helpful.

  • \$\begingroup\$ I'd rather say the 5th is a filter too because it looks moulded. \$\endgroup\$ Jun 21, 2014 at 19:35

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.