Do SMD markings not apply to switches?

Here is a Matsushita switch on a keypad matrix from circa 2008:

Matsushita 89R: Tactile Switch

The top is stamped with "8", "9", "R", and ":". It has the following measurements:

  • 6.31mm width (body 6.31mm square)
  • 6.90mm length with J-legs
  • 3.6mm total height

Matsushita tactile switch

Pulling this one was a major pain - pads lifted way too easily. Luckily one of those pads is mechanical only. They will need some TLC (and probably some bonding agent.)

The closest I can find is a Panasonic EVP-BFAC1A000 but this is not an exact match. Can anyone positively ID this switch?

  • \$\begingroup\$ does it matter that much? You could just find one with similar dimensions \$\endgroup\$
    – BeB00
    Commented Mar 18, 2020 at 22:48
  • 1
    \$\begingroup\$ I like Grayhill \$\endgroup\$
    – DKNguyen
    Commented Mar 18, 2020 at 23:04
  • \$\begingroup\$ Looks like you melted D65 too. \$\endgroup\$
    – Ron Beyer
    Commented Mar 19, 2020 at 0:40
  • \$\begingroup\$ @BeB00 I have no way to accurately measure actuating force, so that alone means that any other replacement could "feel" different. A little difference is ok, but a large difference would make this key stand out from the others. Ron, D65 tests ok but has a rounded corner, possibly my fault. \$\endgroup\$
    – rdtsc
    Commented Mar 19, 2020 at 12:12
  • \$\begingroup\$ If you can go at a store and try them, you could find one with the same feel... Next time use a hot air gun to unsolder SMD parts. :) If you need to do this many times it's worth buying one. + You can solder thermoplastics with it. \$\endgroup\$
    – Fredled
    Commented Mar 22, 2020 at 0:55

1 Answer 1


I think it's from the Panasonic EVQQW series, see the datasheet page 3.

However, I can't find out what the numbers mean


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.