218
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
1.5mm or 2mm height contribute to smaller
and thinner sets
3.9 × 2.9mm Compact (Surface Mount Type)
SKRK
200,000 cycles
Japan Export
1
2
Drawing
No.
■Product Line
Operating force Initial contact
resistance
1. 5 7 N
0.98N
1. 5 7 N
Product No.
SKRKAEE020
SKRKAHE020
SKRKAGE020
Operating life
（5mA 5V DC）
10 0 mΩ ma x .
500mΩ max.
10 0 mΩ ma x .
Height
2mm
1. 5 m m
Operating
direction
Top push
2
3.4
5
（2.5） Resist coating
PC board land dimensions
（Viewed from switch mounting face）
Style
1.5
4.8
2.9
1.4
3.9
2
ø1.8
12
Stem
Photo
1
No.
■Dimensions Unit:mm
■Packing Specifications
Taping
Reel size
Unit:mm
4,5004,500
Minimum order unit （pcs.）
5,0005,000
■Typical Specifications
Items Specifications
Rating （max.）
50mA 12V DC
Rating （min.）
10μA 1V DC
Travel （mm）
0.13
Refer to P.249 for soldering conditions.
Series Number of packages （pcs.） Tape width
（mm）
Export package
measurements （mm）
1 reel
1 case /Japan
1 case / export packing
SKRKAE
SKRKAH 4,500 45,000 45,000
12 395×395×205
SKRKAG 5,000 50,000 50,000
For reels of 330mm diameter, please inquire.
Note
219
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
■Circuit Diagram
12
Stem
（depth0.3）
(SR0.6)
（ø1）
ø
1.8
1.4
2.9
4.8
1.5
3.9
12
2
3.4
5
（2.5） Resist coating
PC board land dimensions
（Viewed from switch mounting face）
StylePhoto
2
No.
■Dimensions Unit:mm
SKRK／3.9 × 2.9mm Compact (Surface Mount Type)
183
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
W：Width. The most outer dimension excluding terminal portion.
D ：Depth. The most outer dimension excluding terminal portion.
H ：Height. The minimum dimension if there are variances.
Type Sharp Feeling Type
Surface Mount
Series
SKRK SKTH SKRP SKQM SKQY SKTQ SKTR SKSU
Photo
Features Compact size
Low-profile Compact size
High operation force
Compact size
Compact size
Middle travel
Water-proof
———————●
Dust-proof
—●—————●
IP standard
———————
67 equivalent
Operating
direction
Top push
●●●●●●●●
Side push
————————
Dimensions
（mm）
W
3.9 3.5 4.2 66 .1 5.3
□ 6 .1
5.3
D
2.9 3.2 3.5 3.7 5.4 5.4
H
1. 5／ 2 1. 8 / 2 . 5 2.5 4.3/5 2.5 4.25 4 .1 3.85/4.34
Operation
force
coverage
1N max.
1N to 2N
2N to 3N
3N to 4N
4N to 5N
Travel （mm）
0 .13 0 .12 0.2 0.25 0.71 0.72 0.7/0.9
Ground terminal
————○———
Operating temperature range
−40℃ to ＋85℃
−40℃ to ＋90℃
Automotive use
—●●●●●●●
Life Cycle
Electrical
performance
Rating （max.）
（Resistive load）
5 0 m A 12 V D C 2 5 m A 16 V D C 5 0 m A 16V D C
5 0 m A 12 V D C 5 0 m A 16V D C
Rating （min.）
（Resistive load）
10μA 1V D C
Insulation resistance
10 0 MΩ m i n . 10 0 V D C 1mi n .
Voltage proof
250V AC 1min. 10 0 V A C 1mi n .
250V AC 1min.
Durability
Vibration
10 to 55 to 10Hz/min., the amplitude is 1.5mm for all the frequencies,
in the 3 direction of X, Y and Z for 2 hours respectively
Lifetime
Shall be in accordance with individual specifications.
Environmental
performance
Cold
−40℃ 96h
−40℃ 1,000h
−40℃ 96h −
40℃ 1,000h
Dry heat
90℃ 96h
90℃ 1,000h
90℃ 96h 90℃ 1,000h
Damp heat
60℃, 90 to 95%RH 96h
60℃, 90 to
95%RH 1,000h
60℃, 90 to 95%RH 96h 60℃, 90 to 95%RH 1,000h
Page
218 220 222 224 225 227 228 229
TACT SwitchTM Soldering Conditions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 249
TACT SwitchTM Cautions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 250
Notes
1. The automotive operating temperature range to be individually discussed upon request.
2. ● Indicates applicability to all products in the series, while ○ indicates applicability to some products in the series.
NEW NEW
249
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
TACT SwitchTM / Soldering Conditions
Temperature profile
■Condition for Reflow
Available for Surface Mount Type.
180
150
260˚C max. 3s max.
230˚C
Time
120s max.
（pre-heating）
3 to 4min.
Time inside soldering equipment
Temperature (˚C )
40s max.
1. Prevent flux penetration from the top side of the TACT SwitchTM.
2. Switch terminals and a PC board should not be coated with flux prior to soldering.
3. The second soldering should be done after the switch is stable with normal temperature.
4. Use the flux with a specific gravity of min 0.81.
（EC-19S-8 by TAMURA CORPORATION, or equivalents.）
Notes
1. Please confirm the specifications of our product for the detailed condition.
2. Soldering conditions differ depending on reflow soldering machines.
Prior verification of soldering condition is highly recommended.
Notes
■Conditions for Auto-dip
Available for Snap-in Type and Radial Type.
Items Condition
Flux built-up
Mounting surface should not be exposed to flux
Preheating temperature
Ambient temperature of the soldered surface of PC board. 100℃ max.
Preheating time
60s　max.
Soldering temperature
260℃ max.
Duration of immersion
5s max.
Number of soldering
2times max.
SKHH Series
Items Condition
Flux built-up
Mounting surface should not be exposed to flux
Preheating temperature
Ambient temperature of the soldered surface of PC board. 110℃ max.
Preheating time
60s　max.
Soldering temperature
260℃ max.
Duration of immersion
5s max.
Number of soldering
2times max.
SKHLTop Push Type, SKQJ
Series
Items Condition
Flux built-up
Mounting surface should not be exposed to flux
Preheating temperature
Ambient temperature of the soldered surface of PC board. 100℃ max.
Preheating time
45s　max.
Soldering temperature
255℃ max.
Duration of immersion
5s max.
Number of soldering
2times max.
■Manual Soldering
Items Condition
Soldering temperature
350℃ max.
Duration of soldering
3s max.
Capacity of soldering iron
60W max.
SKHH, SKHW Series
Items Condition
Soldering temperature
360℃ max.
Duration of soldering
3s max.
Capacity of soldering iron
60W max.
SKTD, SKTG, SKQJ Series
Items Condition
Soldering temperature
350℃ max.
Duration of soldering
3s max.
Capacity of soldering iron
20W max.