These LEDs are the best thing since sliced bread in my opinion!

It is worth considering plating the hole, as this can improve the
brightness of the LED through your elastomeric keypad.

Regards,

Mark

Mark Holmes PCB Designer
Helvar Lighting Control
Hawley Mill, Hawley Road,
Dartford Kent. DA2 7SY
Tel: 01322 22 22 11
Fax: 01322 282 286
mailto:[log in to unmask]
http://www.helvar.com



> -----Original Message-----
> From: Matthew Lamkin [SMTP:[log in to unmask]]
> Sent: Wednesday, October 27, 1999 9:30 AM
> To:   [log in to unmask]
> Subject:      [DC] SMT through board LED's ?
>
> Hi there, I am about to start my first project that uses 3mm SMT LED's
> that shine through a hole in the PCB.
> These are to be seen through a plastic membrane.
> To be placed by a Quad QSV-1 & reflow soldered.
>
> Can someone answer a few questions for me please.
>
> Should the hole be plated or unplated (& why)?
>
> Do you have any preference between "gull wing" or "z bend" or whatever
> (& why)?
>
> Tia -
> Matthew Lamkin
> Printed Circuitboard Draughtsman
> Protec Fire Detection PLC.
> Protec Hse, Churchill way,
> Nelson, Lancashire.
> England UK.
> Email mailto:[log in to unmask]