Author Topic: Zener Diode Markings

June 14, 2022, 12:55:01 PM
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Summa

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Hi, there's a Zener diode in the kit with the markings 24 28, can't tell if that's the Z12V that I'm looking for as it says 22 in the docs

June 15, 2022, 10:22:05 AM
Reply #1

JPK

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Zener 2V7 : BZX 55C 2V7
Zener 4V7 : BZX 85C 4V7 (larger diode)
Zener 12V : ON 24 2B
JPK

June 15, 2022, 10:48:13 AM
Reply #2

Summa

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8) cool and oh its an B not an 8, really hard to tell :) 

October 30, 2022, 05:13:22 PM
Reply #3

AcdNrg

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For those that struggle with the diodes (like me, old eyes), this is what was in my bag. As I had a hard time reading the exact markings, it took me a while. All references based on documentation package 24 and of course things may change when replacements from other parts manufacturers are used due to availability issues.

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D6
Zener Z2V7

Markings on body (black stripe to the left):
BZX
55C
2V7

----------------------------
D16
Zener Z12V

Markings on body (black stripe to the left):
ON  (or maybe DN)
24
2B

----------------------------
D20
Zener Z4V7

Markings on body (black stripe to the left):
BZX
85C
4V7

----------------------------
D4, D5 etc. (the set of 12)
NPN

Markings on body (black stripe to the top):
N914