Please help me to find out the value of a crystalenter image description here

  • \$\begingroup\$ Have you tried powering the circuit and measuring it? If not, why not? \$\endgroup\$ – Andy aka May 18 '16 at 20:55
  • \$\begingroup\$ I tried the same but it didn't give me any result. Whenever do this, the micro-controller stop working. \$\endgroup\$ – Mahbubul Hossain May 18 '16 at 20:57
  • \$\begingroup\$ Did you search that part number on the web? It maybe 40MHZ but not certain, and the other part numbers mean a lot. \$\endgroup\$ – user105652 May 18 '16 at 20:57
  • \$\begingroup\$ I tried also google the marked on the device but didn't get anything \$\endgroup\$ – Mahbubul Hossain May 18 '16 at 20:59
  • \$\begingroup\$ You'll note that I edited your question, the article in question is not a crystal oscillator, it is a crystal used in an oscillator. \$\endgroup\$ – placeholder May 18 '16 at 21:03

This is an Abracon crystal. Code is as follows:

A = Abracon identifier ---------------'||||||
T = First "ten" digit of frequency ----'|||||
U = First "unit" digit of frequency ----'||||
H = First "tenth" digit of frequency ----'|||
Z = Month letter (A to L) ----------------'||
Y = Last digit of year --------------------'|
R = Traceability code ( character A to Z ) -'


4.0000MHz February 2003 would be coded A040B3C (as in your picture).

Source: Abracon.

| improve this answer | |
  • \$\begingroup\$ So you mean that the crystal shown in the picture is a value of 4 MHz? Please clarify clearly is it 4 MHz or 40 MHz? \$\endgroup\$ – Mahbubul Hossain May 18 '16 at 21:17
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    \$\begingroup\$ @MahbubulHossain what part of "4.0000MHz" is NOT clear? \$\endgroup\$ – placeholder May 18 '16 at 21:20
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    \$\begingroup\$ The SE way of thanking for the answer is to accept it. \$\endgroup\$ – Eugene Sh. May 18 '16 at 21:44

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