SK2AA00540 ALPS
Document overview
- PDF pages: 5
Technical content
Page 1
TACT Switch
TM
12mm Square (Snap-in Type)
SKHC Series
Joint stem & flat stem with stable operation feeling.

Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line Package Type
Product Line
TACT Switch TM
| Product No. | Operating force | Operating direction | Travel (mm) | Rating (max.) | Rating (min.) | Operating life (5mA 5V DC) | Initial contact resistance | Stem color | Stem | Minimum order uni(t pcs.) | Drawing No. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SKHCBJA010 | 0.74N | Vertical | 0.3 | 50mA 12V DC | 10BA 1V DC | 500,000 cycles | 100mΩ max. | Blue | Joint stem | 1,000 | 1 |
| SKHCBEA010 | 1.27N | 1,000,000 cycles | Black | ||||||||
| SKHCBGA010 | 2.55N | 500,000 cycles | Dark gray | ||||||||
| SKHCBKA010 | 0.74N | Blue | Flat stem | 2 | |||||||
| SKHCBFA010 | 1.27N | 1,000,000 cycles | Black | ||||||||
| SKHCBHA010 | 2.55N | 500,000 cycles | Dark gray |
Custom- Products
Sharp Feeling Soft Feeling Snap-in Type
Packing Specifications
Surface
Bulk
Mount Type
| Number of packages(pcs.) | Export package measurements (mm) | |
| 1 case /Japan | 1 case /export packing | |
| 5,000 | 15,000 | 309×476×347 |
Radial Type
Note Please place purchase orders per minimum order unit N (integer).
Refer to P.334 for soldering conditions. Refer to P.336 for standard knobs.
Page 2
TACT Switch
TM
12mm Square (Snap-in Type) SKHC Series
Dimensions
Unit:mm
| No. | Photo | Style | PC board mounting hole dimensions (Viewed from switch mounting face) |
| 1 | Joint stem type | H12 1 2 5 3 4 3.8 Guide bosses 3.8 3 Stem 1.2 3 3.5 4.3 1.5 3.5 ø1.6 1 12.5 9 | 2-¿1.7 holes 4-¿1.2 holes 9 5 12.5 |
| 2 | Flat stem type | H12 1 2 5 3 4 ¿1.8 dimple on either of the two locations Guide bosses ¿7.9 Stem 3.5 4.3 3.5 ¿1.6 1 1.5 12.5 9 | 2-¿1.7 holes 4-¿1.2 holes 9 5 12.5 |
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line Package Type
TACT Switch TM
Custom-
Products
Sharp
Feeling
Soft
Feeling
Snap-in
Type
Surface Mount Type
Radial
Type

Note
Please use 1.6mm thick PC boards.
Page 3
List of Varieties

Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line Package Type
TACT Switch TM
Custom- Products
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.
- TACT SwitchTM Soldering Conditions ………………………………………………………………………………………334
- TACT SwitchTM Cautions………………………………………………………………………………………………………335
- Product Line of Knobs for TACT SwitchTM …………………………………………………………………………………336
Notes 1. The automotive operating temperature range to be individually discussed upon request. 2. ○marks in "Available for automotive use" indicate that some of the series products can work at the operating temperature range from -40℃ to +85℃, ●marks in "Available for automotive use" indicate that all of the series products can work at the operating temperature range from -40℃ to +85℃.
Page 4
Soldering Conditions
Condition for Reflow Available for Surface Mount Type. 1. Heating method: Double heating method with infrared heater. 2. Temperature measurement: Thermocouple 0.1 to 0.2φ CA(K)or CC(T)at solder joints(copper foil surface). A heat resistive tape
Detector
should be used to fix thermocouple.
- Temperature profile
Push

Temperature (˚C )
Slide
Rotary
Encoders
Power
Dual-in-line Package Type
TACT Switch TM
Custom- Products
Notes 1. The above temperature shall be measured of the top of switch. There are cases where the PC board's temperature greatly differs from that of the switch, depending on the material, size, thickness of PC boards and others. The above-stated conditions shall also apply to switch surface temperatures. 2. Soldering conditions differ depending on reflow soldering machines. Prior verification of soldering condition is highly recommended.
Sharp Feeling
Manual Soldering(Except SKRT Series)
Conditions for Auto-dip
Soft
| Items | Condition |
|---|---|
| Soldering temperature | 350℃max. |
| Duration of soldering | 3s max. |
| Capacity of soldering iron | 60W max. |
Available for Snap-in Type and Radial Type
Feeling
(Except, SKHL, SKQJ, SKQK, SKEG series)
Snap-in
| Items | Condition |
|---|---|
| Flux built-up | Mounting surface should not be exposed to fluk |
| 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. |
Type Surface Mount Type Radial Type
Notes 1. Consult with us for availability of TACT SwitchTM washing. 2. Prevent flux penetration from the top side of the TACT SwitchTM. 3. Switch terminals and a PC board should not be coated with flux prior to soldering. 4. The second soldering should be done after the switch is stable with normal temperature. 5. Use the flux with a specific gravity of min 0.81. (EC-19S-8 by TAMURA Corporation, or equivalents.)
Page 5
Product Line of Knobs
Unit:mm

Detector
Slide
Rotary
Encoders
Power
Dual-in-line Package Type
TACT Switch TM
Custom- Products
Sharp Feeling
Feeling Snap-in
Surface Mount Type
Notes 1. The knob will be delivered together with the switch but packed separately.
Radial
SK2AA00010~00090(Keytop)
- The label is not included.
Type
- For SK2AA00010 to SK2AA00090 types, please check the mounting direction.
Stem of key switch