*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.

STSS SMD 4 mm Sealed Tact Switch

Electrical Characteristics

Electrical Life

..........................................100,000 cycles

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

Contact Resistance ......100 milliohms max.

Insulation Resistance

..................100 megohms, DC 100 V min.

Dielectric Strength ....100 V AC for 1 minute

Contact Arrangement ........1 pole 1 position

Environmental Characteristics

Operation Force........................220 g ±65 g

Stroke

................................0.2 + 0.10/- 0.05 mm

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

Storage Temperature ........-30 °C to +80 °C

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

Method 201A

Frequency ..............10-55-10 Hz/1 minute

Directions ................X,Y,Z, three mutually

perpendicular directions

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

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

Method 213B, Condition A

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

Direction & Times....................6 sides and

3 times in each direction

Physical Characteristics

Cover Materials

..........................................Stainless Steel

Base Materials

........LCP high temp. thermoplastic, white

Actuator Materials

........LCP high temp. thermoplastic, black

Contact Disc Materials

....................Stainless with silver cladding

Terminal Materials

............................Brass with silver plated

Tape ..................................................Teflon

Hand Soldering Process

..............Use a soldering iron of 30 watts,

controlled at 320 °C (608 °F)

for approximately 2 seconds while

applying solder

Reflow Soldering Process

..............When applying reflow soldering,

the peak temperature or the reflow oven

should be set to 240 °C

Packaging ..................3,500 pieces per reel

1.80 ± 0.10

(.071 ± .004)

3.90 ± 0.10

(.154 ± .004)

4.80 +0.20/-0.30

(.189 +.008/-.012

0.65 +0/-0.10

(.026 +0/-.004)

DIA.

0.06

(.002)

0.10

(.004)

1.50 +0.15/-0.10

(.059 +.006/-.004)

2.10

(.083)

1.00

(.039)

1.40 ± 0.10

(.055 ± .004)

2.90 ± 0.10

(.114 ± .004)

3.55

(1.40)

0.80 ± 0.10

(.03 ± .004)

0.50

(.020)

1.20

(.047)

1.70

(.067)

2.60

(.102)

4.60

(.181)

3.20

(.126)

5.00

(.197)

1.70

(.067)

1.80

(.071)

2.40

(.094)

3.60

(.142)

0.80 +0.10/-0

(.028 +.004/0)

DIA. 2 PLCS.

How to Order

STSS - 32 - TR

Model

Terminal

Embossed Tape

TR = 3500 Pcs./180 mm Reel

DIMENSIONS ARE:

MM

(INCHES)

Product Dimensions

Features

■

Available sharp click feel with a positive

tactile feedback

■

Ultra-miniature and lightweight structure

suitable for high density mounting

■

Insert molding in the contact with special

■

Economical with high reliability

treatment prevents flux buildup during

■

RoHS compliant*

soldering and permits autodipping

Circuit Diagram

12

Recommended PCB Layout

Reflow Soldering Profile

Time (Seconds)

275

30-40 Sec.

120 °C

225

175

125

75

25

0

20

40

60

80

100 120 140 160 180 200

80-90 Sec.

10-15

Sec.

35-60

Sec.

180 °C

240 °C

Model STSS is currently available,

although not recommended for new

designs.