*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

SDTM Series SMD Tact Switch

Electrical Characteristics

Electrical Life

.................50,000 cycles min. for 260 g

500,000 cycles min. for 100 g, 160 g

Rating ............................DC 12 V, 50 mA

Contact Resistance .....100 mohms max.

Insulation Resistance ..100 Mohms min.,

DC 500 V min.

Dielectric Strength

...........................AC 250 V for 1 minute

Contact Arrangement ...1 pole 1 position

Environmental Characteristics

Operation Force .......100 g, 160 g, 260 g

Tolerance .....................................±50 g

Stop Strength ..Place the switch vertical,

a static load of 3 kg shall be

applied in the direction of actuator

operation for a period of 15 seconds

Stroke .......0.25 mm (+0.2 mm, -0.1 mm)

Temperature Range......-25 °C to +70 °C

Vibration Test .................MIL-STD-202F,

Method 201A

Frequency ............10-50-10Hz/1minute

Directions..............X,Y,Z 3 mutually per

pendicular directions

Time..................2 hours each direction,

high reliability

Shock Test .....................MIL-STD-202F,

Method 213A, Condition A

Gravity .......50 g (peak value), 11 msec.

Directions/Time ......6 sides and 3 times

in each direction

Physical Characteristics

Cover Materials ..............Steel, tin plated

Base Materials .......Thermoplastic Nylon

FG 101, UL94V-0

Actuator Materials ............Thermoplastic

Nylon UL94V-0

Color .........................Black, brown, red

Contact Disc. Materials ...........Phosphor

bronze with silver cladding

Terminal Materials ........Brass with silver

cladding

Features

■

Available sharp click feel with a positive

tactile feedback

■

Ultra-miniature and lightweight structure

suitable for high density mounting

■

Very economical with high reliability

■

RoHS compliant*

■

Insert molding in the contact with special

treatment prevents flux buildup during

soldering and permits autodipping

SDTM-610/620/630/650/660

4.30

(.169)

6.20

(.244)

3.50

(.138)

DIA.

3.50

(.138)

0.50

(.020)

MAX.

0°-4°

0.70

(.028)

0.200 ± 0.10

(.008 ± .004)

9.0 ± 0.2

(.354 ± .008)

CL

CL

CL

H ± 0.20

(H ± .008)

4.50 ± 0.20

(.177 ± .008)

T1

T2

T4

T3

Product Dimensions

DIMENSIONS:

MM

(IN)

TOLERANCES:

EXCEPT WHERE NOTED.

0.2

(.008)

SDTM-644/648

4.30

(.169)

6.20

(.244)

SDTM-644:

0.70

(.028)

CL

CL

2.4

(.095)

DIA.

3.50

(.138)

0.50

(.020)

MAX.

0°-4°

0.200 ± 0.10

(.008 ± .004)

9.0 ± 0.2

(.354 ± .008)

CL

7.30

(.287)

4.50 ± 0.20

(.177 ± .008)

SDTM-648:

2.8

(.110)

DIA.

T1

T2

T4

T3

9.50

(.374)

4.50

(.177)

1.30

(.051)

RECOMMENDED PCB LAYOUT

6.40

(.252)

T1

T2

T4

T3

How To Order

SDT M - 6 10 - K TR

Model

Product Code

M = SMD

Size

6 = 6 mm

Height

10 = 4.3 mm

20 = 5.0 mm

30 = 7.0 mm

44 = 7.3 mm (square head)

48 = 7.3 mm (square head)

50 = 9.5 mm

60 = 13 mm

Actuating Force

K = 100 g (black head)

N = 160 g (brown head)

R = 260 g (red head)

S = 320 g (salmon head)

Y = 520 g (yellow head)

Packaging Option

TR = Embossed tape*

610 = 1000 pcs.

620 = 900 pcs.

630 = 700 pcs.

644, 648 = 500 pcs.

650 = 380 pcs.

__ = Tube

All models = 77 pcs.

*not applicable to Model 660.

T1

T2

T4

T3

CIRCUIT DIAGRAM

The SDTM Series is currently available,

although not recommended for new

designs.