Metal Keypad Dome Switches
5133TR PDF
5134TR PDF
5135TR PDF
5136TR PDF
5153TR PDF
5154TR PDF
5155TR PDF
5156TR PDF
5173TR PDF
5174TR PDF
5175TR PDF
5176TR PDF
Keystone Catalog Page
Keystone Page
Metal Keypad Dome Switches

Snap action "Key-Pad" dome contacts from Keystone Electronics are specifically designed as a momentary contact for printed circuit boards, flex circuits, membrane switches and discrete switches.

These innovative dome switches feature a 4-legged shape that allows them to be durable and reliable while maintaining an exceptional tactile feel with trip forces from 8 oz. to 14 oz.

Manufactured from Nickel plated Stainless Steel, these domes are built for harsh environments such as Microwaves, Vending Machines or any application requiring substantial tactile response along with extensive actuation life. Keystone's key-pad domes offer design versatility for single or double-sided printed circuit boards, flex circuits, and membrane switch panels.

Supplied on Tape & Reel compatible with most vacuum and mechanical pick and place assembly systems. 3 Series to choose from:

  • MINI SERIES - 0.331" [8.40 mm] DIA
  • COMPACT SERIES - 0.394" [10.00 mm] DIA
  • MAXI SERIES - 0.480" [12.20 mm] DIA

"Key-Pad" Domes are ideal for Keypad arrays that require long life or a sealed interface.  These snap action switches provide positive feedback with an audible and tactile click.  "Key-Pad" domes are made from nickel plated stainless steel which provides a very reliable user interface (over one million cycles).  "Key-Pad" domes can be placed directly to a PCB which will save on assembly cost and increase reliability.  Available on tape and reel for automated pick and place assembly applications, as well as packed stacked in tubes.  For pack stacked in tubes, the contour of the dome keeps an air pocket in between each dome. The air pocket allows only one dome to be picked off the stack eliminating double stacked domes.

Keystone Keypad

The "Key-Pad" dome is designed to be placed on the PCB, not soldered.  The domes are held in place by using a "Key-Pad" adhesive spacer (P/N 5200) which requires cut outs to be added in the proper locations.  If the top sealing surface has an adhesive bottom side, it will help to keep the dome in the proper location (optional).

The low profile of the dome is ideal for thin, lightweight applications or applications that need to be sealed or easily cleaned.  The domes can be activated from finger pressure thru a thin flexible membrane that can be sealed against the product chassis so cleaning fluids, dust or weather will not damage the circuitry.

If the device has a thicker or sculpted exterior package, the dome can be activated with an actuator.   The actuator will give the "Key-Pad"  dome a more conventional push button feel.

A "Key-Pad" Dome is available for almost any application with trip forces ranging from 8 oz. to 14 oz. and dome diameters from 8.4mm to 12.2mm.  Trip forces are consistent from switch to switch per batch.   This ensures that a switch array will have a consistent feel from switch to switch.  "Key-Pad" domes have a large sweet-spot which allows the dome to be easily activated even though it was pushed off center.  Gold plated domes are available upon request.

Keystone Keypad assembly

Available in three different diameter series: Mini (8.4mm), Compact (10.0mm) and Maxi (12.2mm)

Specifications

  • Material:  Stainless Steel, Nickel Plated.
  • Gold plating available
  • Operating Temperature: -40°F to 220°F [-40°C to 105°C]
  • Storage Temperature:  -67°F to 257°F [-55°C to 125°C]

Electrical

  • Contact resistance: less then 100 mOhm
  • Switching Voltage:  0.1 to 100VDC
  • Switching Current: 5 µAmp to 100 mAmp DC
  • Switching Capacity: 1 Watt

MINI SERIES - .331 [8.4] DIA
[Click CAT NO. to download mechanical specification pdf.]

CAT NO. 

HEIGHT ±.004[±0.10]

TRIP FORCE

REBOUND FORCE

CLICK RATIO

5133TR

.018 [0.45]

7.8 oz [220g]

3.2 oz [90g]

40%-70%

5134TR

.020 [0.50]

9.9 oz [280g]

3.2 oz [90g]

50%-80%

5135TR

.022 [0.55]

12.0 oz [340g]

4.6 oz [130g]

50%-80%

5136TR

.022 [0.55]

14.1 oz [400g]

5.3 oz [150g]

50%-80%

 

COMPACT SERIES - .394 [10.0] DIA
[Click CAT NO. to download mechanical specification pdf.]

CAT NO. 

HEIGHT ±.004[±0.10]

TRIP FORCE

REBOUND FORCE

CLICK RATIO

5153TR

.030 [0.75]

7.8 oz [220g]

3.2 oz [90g]

40%-70%

5154TR

.030 [0.75]

9.9 oz [280g]

3.2 oz [90g]

50%-80%

5155TR

.031 [0.80]

12.0 oz [340g]

3.5 oz [100g]

60%-80%

5156TR

.031 [0.80]

14.1 oz [400g]

3.5 oz [100g]

60%-85%

 

MAXI SERIES - .480 [12.2] DIA
[Click CAT NO. to download mechanical specification pdf.]
  

CAT NO.

HEIGHT ±.004[±0.10]

TRIP FORCE

REBOUND FORCE

CLICK RATIO

5173TR

.026 [0.65]

7.8 oz [220g]

3.0 oz [85g]

40%-70%

5174TR

.030 [0.75]

9.9 oz [280g]

3.2 oz [90g]

50%-80%

5175TR

.030 [0.75]

12.0 oz [340g]

3.5 oz [100g]

50%-80%

5176TR

.031 [0.80]

14.8 oz [420g]

4.2 oz [120g]

50%-80%

 

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