Switch plunger examples with status indication
Cross-section of a switch plunger
Switch plungers for use under a membrane underlay

MENTOR’s range of switch plungers is designed specifically for use under membrane keypad overlays. The range is available in two sizes: 15 x 15mm and 19 x 19mm; two heights: 12.5mm and 9.7mm; and two illumination options: spot illumination for status indication or without illumination. 

As with all of MENTOR’s innovative switch products, switch plungers form a multi-part component solution, with switches and LEDs (where applicable) supplied separately.

Integral anti-twist protection is standard on all versions, to ensure reliable component insertion in automated assembly processes.

Status indicators with or without illumination

Switch plungers are available with status indicators using spot illumination or without illumination. Both versions can be combined with other pushbutton caps and signal indicators from MENTOR’s wide range of keypad components.

The illuminated versions are designed for applications with CHIP LEDs and offer up to four illuminated points, facilitating a large number of states that can be indicated using dual or RGB LEDs.

MENTOR offers its own pushbutton switches, alternatively both the switches and LEDs can be sourced from other manufacturers, offering flexibility of supply.

Custom switch plungers and signal indicators

Customer-specific cap heights can be realised with little or no tool cost. Other possibilities include body-coloured switch caps and signal indicators to suggest potential colour, even when their illumination is off. Different printing processes provide many graphics / text options.

Further ranges of keypad status indicators are available for use with painted/coated enclosures.

General Technical Data
LL Material: Polystyrene Operating temperature: -40°C to +70°C
Quad Status Indicator 0.2mm
Switch Plungers
Illuminated Switch Caps with Full Illumination
Plunger dimensions: A x A =15 x 15 / H = 9.7
Illumination B C E F Pushbutton Switch Part No
Yes 8.2 19.05 15.6 8.6 Types 1 & 2 2271.2001
No - 19.05 15.6 - Types 1 & 2 2271.2002
Yes 8.2 19.05 15.6 8.6 Type 3 2271.2003
No - 19.05 15.6 8.6 Type 3 2271.2004
Yes 8.2 19.05 15.6 8.6 Type 4 2271.2005
No - 19.05 15.6 - Type 4 2271.2006
Plunger dimensions: A x A =15 x 15 / H = 12.5
Illumination B C E F Pushbutton Switch Part No
Yes 11 19.05 15.6 8.6 Types 1 & 2 2271.2011
No - 19.05 15.6 - Types 1 & 2 2271.2012
Yes 11 19.05 15.6 8.6 Type 3 2271.2013
No - 19.05 15.6 - Type 3 2271.2014
Yes 11 19.05 15.6 8.6 Type 4 2271.2015
No - 19.05 15.6 - Type 4 2271.2016
Plunger dimensions: A x A =19 x 19 / H = 9.7
Illumination B C E F Pushbutton Switch Part No
Yes 8.2 22.86 19.6 11 Types 1 & 2 2271.3001
No - 22.86 19.6 - Types 1 & 2 2271.3002
Yes 8.2 22.86 19.6 11 Type 3 2271.3003
No - 22.86 19.6 - Type 3 2271.3004
Yes 8.2 22.86 19.6 11 Type 4 2271.3005
No - 22.86 19.6 - Type 4 2271.3006
Plunger dimensions: A x A =19 x 19 / H = 12.5
Illumination B C E F Pushbutton Switch Part No
Yes 11 22.86 19.6 11 Types 1 & 2 2271.3011
No - 22.86 19.6 - Types 1 & 2 2271.3012
Yes 11 22.86 19.6 11 Type 3 2271.3013
No - 22.86 19.6 - Type 3 2271.3014
Yes 11 22.86 19.6 11 Type 4 2271.3015
No - 22.86 19.6 - Type 4 2271.3016
Switch Plungers

Pushbutton Switch Type 1: MENTOR [1254.1###]
Pushbutton Switch Type 2: OMRON B3FS-1052
Pushbutton Switch Type 3: RAFI RACON 8
Pushbutton Switch Type 4: RAFI MICON 5

Switch Plungers
Switch Plungers
Switch Plungers
Switch Plungers

Recommended LEDs: R4-R7 & R14-R16 Link to the detail

Quad Status Indicator 0.2mm Part Nos in bold font are available ex-stock with a low MOQ - please hover over Part No to see details
Part Nos not in bold font have a 6-8 week lead-time but please enquire – this can sometimes be much shorter
Quad Status Indicator 0.2mm 3,000 pcs MOQ for custom lengths/heights
Quad Status Indicator 0.2mm Customised solutions are available – some solutions can be realised with minimal or even zero tooling cost