D

D–25

Dimensions are shown: mm

Specifications and dimensions subject to change

www.ckswitches.com

DIGITAST

Microminiature SPDT, Key Switches

Series

SER Narrow button

SET Wide button

SERU Switch body

only (no button)

LED

NONE No LED

L

1 LED

2L

2 LED’s

Button Color**

None (SERU)

BK Black

GY Gray

WH White

RD Red

BU Blue

1st LED Color***

NONE No LED

RD

Red

YE

Yellow

GN

Green

A U

Function

EE Latching

OA Non-latching

Contact Material

AU Gold

How To Order

Our easy build-a-switch concept allows you to mix and match options to create the switch you need. To order, select

desired option from each category and place it in the appropriate box.

Some of the configurations may not be available

or could require some development.

Features/Benefits

• High reliability/long life

• Designed for low level

switching

• Ready to implement on PCB

• Latching function available

• Several button options

• RoHS compliant and compatible

Typical Applications

• Medical

• Instrumentation

• Industrial electronics

• Audio electronics

Electrical

SWITCHING POWER MAX.: 240 mW DC

SWITCHING VOLTAGE MAX.: 24 V DC

SWITCHING CURRENT MAX.: 10 mA DC

CARRYING CURRENT AT 20˚C (push-push version): 100 mA

DIELECTRIC STRENGTH (50 Hz, 1 min): 500 V

OPERATING LIFE with or without max. switching power

Momentary: ≥ 5 x 106 operations

Push-push: ≥ 5 x 105 operations

CONTACT RESISTANCE: Initial ≤ 50 mΩ

After 5 x 106 operations: ≤ 100 mΩ

INSULATION RESISTANCE: ≥ 1010 Ω

CAPACITANCE at f= 10 kHz: ≤ 0.8pF

BOUNCE TIME: ≤ 2.5 ms

Operating speed 400 mm/s (15.75/s)

Environmental

OPERATING TEMPERATURE: -25˚C to 85˚C.

Construction

FUNCTION: momentary or push-push

CONTACT ARRANGEMENT: 1 change over contact SPDT, NO

MODE OF SWITCHING: Non-shorting

DISTANCE BETWEEN BUTTON CENTERS:

HORIZONTAL MINIMUM: 12,7 (0.500) or 17,78 (0.700)

VERTICAL MINIMUM: 17,78 (0.700)

TERMINALS: PC pins

MOUNTING: Soldering, centering pins

Mechanical

TOTAL TRAVEL: ≤ 3 (.0018)

SWITCHING TRAVEL: 1,5 (0.0591)

LATCHING TRAVEL: 1,8 (0.0709)

OPERATING FORCE: 1.5 +/- 0.5 N (150 +/- 50 grams)

Process

SOLDERABILITY:

Wave soldering, compatible with lead free soldering profile

Hand soldering, 350˚C for 3 seconds

2nd LED Color***

NONE No LED

RD

Red

YE

Yellow

GN

Green

Button Style

SR Narrow

ST Wide

Button Color**

BK Black

GY Gray

WH White

RD Red

BU Blue

K

LED Spacing*

NONE Narrow LED Spacing

(TYP Europe)

7.62

Wide LED Spacing

(TYP No. America)

Body Color

NONE White (STD)

BRN Brown

LED Holes

NONE No LED holes

L

1 LED hole

2L

2 LED holes

Latching

None For use with momentary switch

EE

With “EE” staple for latching

* LED spacing only applies when 1 LED requested

** Additional button colors available by request

*** Additional LED colors available by request including Bi color configurations

Switch

Button

Reference

SER BK AU OA

Reference

SRK BK