ST

ST Lighted Touch Switch

Easy operation with light and soft touch. (No click)
LED Full-Face and Dual-Color illumination available.
FEATURES
Easy operation with light and soft touch.(No click)
As resistive film type, it is possible to operatewith wearing gloves.
Depth behind panel : Only 22.5mm
LED Full-Face, Dual-Color, Illumination
available.
Button Size: 17mm square type
Legend on filter with engraving/printing available.
Wiring connection : With connecter(Appended connecter provided)
chouft tso&ht
Lig

OPERATION THEORY

Touching Part

Pulse Regulated
CircuitSwitching Circuit

SPECIFICATIONS
Operation

Momentary/Alternate action

Supply Voltage

DC5⬃24V(⫾10%)

Current Output

Voltage DC35V, Current 200mA MAX
Less than 5mA (Apply DC12V)

Current Consumption (Unload)
Dielectric Strength

500V AC RMS between terminals and ground50/60Hz for 60sec. At normal ambient temperature and humidity

Insulation ResistanceMore than 100M⍀ at 500V DC

Operating Force

0.3⬃0.6N(Reference)

Operation Life

More than 1,000,000 operations

Ambient Temperature–10 to 50⬚C

Ambient Humidity

10⬃80% RH

ST231725.2

2224.52DIMENSIONS

Sunmulon mark

INTERNAL CONNECTION ARRANGEMENTSTERMINALS LAYOUT

LED Circuit

Switch Circuit
LC

Sunmulon mark12, 24V

Mono-Color
Dual-Color

14210G
L1L2LCO
V

4.9(BOTTOM VIEW)

L1

LC

LED+V

L1LC

DDual-Color

5V

5O

Main
Circuit

Vcc
Load

G
L1

LED-L1LCLCON
OUTPUT
OFF
GND
LED-

L2

L1

MomentaryTouch
No touch

D : Diode for surge protection

Alternate
Touch
No touch

L2
L2
ON
OFF

OUTPUT

Dual-Color
Combination

LC-L1

R

GOY

LC-L2G

OY

R

LED DATA
LED RATINGSR=Red, G=Green, OY=Orange Yellow

Current Rating (mA)
DC SupplyVoltage (V)
RGOY

RGOY(⫾5%)12252212252212,24 (⫾5%)

61211612115

EXTERNAL RESISTOR
Switches are normally fitted with internal resistors to operate on 5, 12, 24V DC supply. In case of non-resistor type, suitable external current limiting resistors
must be installed as shown by the table and formula.

Mono Color
5V

ITEM

Dual Color
12,24V

5V

12,24V

R

GOY

R

G

OY

R

GOY

R

GOY

Max. operating current IFM (mA)

505050252525505050252525

DC reverse voltage VR (V)888161616888161616

Forward voltage VF (V)

3.5

4.0

3.8

7.0

8.0

7.6

3.5

4.0

3.8

7.0

8.0

7.6

Recommended operating current IF (mA)

1225

22612111225

2261211

Wiring diagram

Fig. 2

Fig. 1

Current Reduced Factor(Over 25⬚C working Temperature) : 0.33mA/⬚C(DC): 1.6mA/⬚C(PULSE)* The value of the series resistor can be
determined by the formula:* Pulse Lighting
Pulse Width Pw = 100␮SDuty Ratio DR = 10 –1
IFM = 120mA (any color)

Vcc⫺VFIFVcc: Supply Voltage
VF: Forward Voltage
IF: Forward Current With Guard CoverR⫽

IFRVFVcc

VFVcc

Vcc
IFIFFig. 1

RRFig. 2Tolerance : ⫾0.4mm

ST
Panel Layout / Panel Cut Dimensions
Independent

Panel Layout

REPLACEMENT PARTS
FilterPanel Cut Dimensions

RedST-3100-LR

GreenST-3100-LG

23.4 ⫾0.2

25.2

25.2

ST-3100-LO

Milk White

ST-3100-LM

Yellow
23.4⫹25.2(n⫺1) ⫹0.5
0ST-3100-LY
17.9

Filter Dimension
21.3

25.2

SerialOrange Yellow

25.2n0.9

Panel thickness: 1.0 ⬃ 3.2mm
n : number of switches* Panel Cut Dimension should be after panel paintings.

1.2

APPENDED CONNECTER / WIRE HARNESSAPPENDED CONNECTER PART NO. ST-3121(1 pc. of Housing and 6pcs. of Pin-Contact)* Pin-Contact Presser :DF3-TA2428HC (Hirose Electric)

WIRE HARNESS WITH CONNECTER
Wire : UL1007 AWG26 equivalentPart No.

250mm

ST-3120-1

500mm

ST-3120-2

1GL1L2LCO
V

Length A

Pin No.

123

Wire Color Bk. Bl. G

456Y W R* This case, appended connecter is not needed,
please select (⫻) Without connecter.

A

ORDERING CODE

ST2K12APPENDED CONNECTEROPERATIONM

MomentaryA

Alternate

Current Output

BUTTON SHAPE / ILLUMINATION TYPES0Mono-Color

S3Dual-Color

Appended⫻Without

Supply Voltage
to LEDFILTER COLOR

1 5V Built-in Resistor

1Red

2 12V Built-in Resistor

2Green3 24V Built-in Resistor

3Orange Yellow

4 5V Non-Resistor

4Milk White

5 12V Non-Resistor

8Yellow

6 24V Non-Resistor

OUTPUT
2A

LED COLOR
7Red8Green

9 Orange Yellow

Full-Face :Put color no. into the frame 1
Dual-Color :Put color no. into the frame 1,2(78,89,97)

HOUSING COLORNOTES1) In case of Dual-Color, filter color should be selected as Milk-White.
2) Regarding as Dual-Color, simultaneous lighting is not possible withbuilt-in resistor type, so please select non-resistor type and apply
external resistor accordingly.
3) Filter always should be installed when operate.

KBlackH

GrayTERMINALK CONNECTER

4) Switch circuit could be effected by any noise, therefore, that time,please use sealed wire or apply absorbing circuit.
5) Regarding as alternate action type, please be noted that cutting off
DC supply while the switch be locked, the switch will be reset.

Installing / Removing Filter
2. Removing Filter

1. Installing Filter
Install as shown with sliding in until click.

Remove as shown with pushingout by tweezers or something
like that.

* Cannot be installed after mounting switch on panel.
Tolerance : ⫾0.4mm