APEM 4 Key Membrane Keypad

  • RS Stock No. 507-504
  • Mfr. Part No. AC3559
  • Brand APEM
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): GB
Product Details

Self-adhesive matrix membrane keypads

A unique feature of these keypads is the insertable polycarbonate sheet carrying standard printed legends on one side - the other side can be user marked (written, typed or transferred symbols) to provide complete legend customisation and the removal of any limitation on keypad orientation
The legend for 4´4 and the 4´3 keypads, is formed by inserting two sheets, chosen from a set of 4 supplied with each keypad, into the two pockets of the keypad
4´1 keypad, requires one sheet (from the two supplied) to be inserted. Alternatively other suitable paper or polycarbonate legend sheets may be used
By punching holes in the legend sheet it is possible to provide individual key indication (via L.E.D.) and by use of a translucent legend sheet overall back illumination may be achieved
After inserting the legends, the self-adhesive keypad can be affixed on to any suitable clean flat surface
Flexible tail of the keypad may be terminated by means of a female connector to mate with PCB headers connectors e.g. see stock no 467-576
Each keypad has a black polycarbonate top layer with silver embossing and printing
Double-sided silver legend sheet has black legend printed on one side, with the other side blank
Supplied with a datasheet
Connection lead length 100 mm
Contact material: Ag
Actuator material: Polycarbonate
Mechanical life: 106 operations


Stock numbers 693-2391 and 693-2388 have fixed legends and offer no different format.

Attribute Value
Keypad Layout 4 x 1
Membrane Operation Yes
Number of Keys 4
Keypad Output Matrix
Mechanical Life Per Key 1000000Operations
Contact Material Silver
Actuator Colour Silver
Actuator Material PC
Minimum Operating Temperature -30°C
Operating Temperature Range -30 → +55°C
Maximum Operating Temperature +55°C
217 In stock - FREE next working day delivery available
Price Each
£ 12.96
(exc. VAT)
£ 15.55
(inc. VAT)
Per unit
1 - 4
5 - 9
10 - 24
25 +