203
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
Compact, low-profile type with a height of 0.4mm
4.5mm Square Low-profile (Surface Mount Type)
SKRM
10,000
Japan Export
■Product Line
SKRMAAE010
SKRMABE010
1. 5 7 N
2.55N
Top push
0 .15
0.2
500,000 cycles
100,000 cycles
Operating force Travel（mm） Operating life
（5mA 5V DC）
Product No. Operating direction
13
24
■Circuit Diagram
■Packing Specifications
Taping
Reel size
Unit:mm
10,000
Minimum order unit （pcs.）
■Typical Specifications
Items Specifications
Rating （max.）
50mA 12V DC
Rating （min.）
10μA 1V DC
Initial contact resistance
100mΩ max.
Refer to P.249 for soldering conditions.
For reels of 330mm diameter, please inquire.
Note
Number of packages （pcs.） Tape width
（mm）
Export package
measurements （mm）
1 reel 1 case / Japan
1 case / export packing
10,000 100,000 100,000 12 395×395×205
PC board land dimensions
（Viewed from switch mounting face）
Style
■Dimensions Unit:mm
0.4
4.5
4.5
3.75
2.85
4
ø0.8 knob
operation range
1
2
3
4
2.9
4.6
2.6
4
181
TACT SwitchTM Sharp
Feeling Soft
Feeling Snap-in
Type Surface
Mount Type Radial
Type
Type Sharp Feeling Type
Surface Mount
Series
SKSH SKRW SKRM SKRB SKRR SKQG SKTC
Photo
Features
Low–profile
Low–profile
and long life
Low–profile Double action
Water-proof
——————●
Dust-proof
——————●
IP standard
——————
67 equivalent
Operating
direction
Top push
●●●●●●●
Side push
———————
Dimensions
（mm）
W
3.3
□3.7 □4.5 □4.8
7. 5
□5.2
3.4
D
2.9 72.2
H
0.35 0.4 0.55 0.6 1. 5 0.62
Operation
force
coverage
1N max.
See the
relevant pages
for
respective
product
descriptions
1N to 2N
2N to 3N
3N to 4N
4N to 5N
Travel （mm）
0 .15 0.15/0.2 0.25 See the relevant
pages for respective
product descriptions
Ground terminal
———————
Operating temperature range
−30℃ to ＋85℃ −40℃ to ＋85℃
−40℃ to +90℃ −30℃ to ＋85℃
Automotive use
———●—○—
Life Cycle
Electrical
performance
Rating （max.）
（Resistive load）
5 0 m A 12 V D C
Rating （min.）
（Resistive load）
10μA 1V D C
Insulation resistance
10 0 MΩ min . 10 0 V D C 1m i n .
Voltage proof
10 0 V A C 1m i n .
250V AC 1min.
10 0 V A C 1m i n .
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
Dry heat
90℃ 96h
Damp heat
60℃, 90 to 95%RH 96h
Page
2 01 202 203 204 205 206 207
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.
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.
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.
