Actions
Forum Thread Details
  • State Not Answered
  • Replies 1 reply
  • Subscribers 240 subscribers
  • Views 185 views
  • Users 0 members are here
Related
See a helpful answer?

Be sure to click 'more' and select 'suggest as answer'!

If you're the thread creator, be sure to click 'more' then 'Verify as Answer'!

crystal and ultrasonic

ggrelczak

Good morning,

I know ... crystals are usually not ultrasonic washable ... but what about the Farnell-part 2853936 ( MCSJK-7U-16.00-12-10-80-B-10 ) ? Can I apply the pcb with the part to the ultrasonic after placement and  reflow-soldering?

Regards, Gunther

  • 0

    I wash parts similar to this (other makes) without a second thought and with no problems.

    A 32kHz crystal might be a problem because its resonant frequency will be quite close to that of a typical ultrasonic cleaner.

    If you are really worried do a test - measure the frequency of the oscillator accurately (1ppm or better), wash it, and check it again.

    If it changes - don't clean them. Remember to do some control parts that get all the process (including dipping in the cleaning tank)  except the ultrasonic.

    MK