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Keylock switch MRK

●To buy this product, please go to the following Online Web stores.
To the Keylock switch“MRK series” page on the DigiKey online shop
To the Keylock switch“MRK series” page on the Chip1stop online shop

Key Switches

 
FeaturesFeatures
    • For PCB Mounting
      Direct mounting to PC board. The terminal pin layout is in inch pitch.

    • High Contact Reliability
      Gold-plated contact with self-cleaning, twin contact mechanism provides high contact reliability.

    • Smooth Operation
      Steel ball adopted to click mechanism for smooth operation.

    • Improved Resistance to Soldering Heat
      The resistance to soldering heat of contacts is improved by blocking heat from terminals by using the printed circuit board.

Specifications

Rating 0.4VA max. (20VDC max.)
Initial contact resistance 200mΩ max. (0.5mA 200μVAC)
Dielectric strength 250VAC 1 minute
Insulation resistance 100MΩ min. (100VDC)
Electrical life 10,000 cycles
Operating force 2.94±0.98N・cm
Operating temperature range -20℃~+70℃
Storage temperature range -40℃~+80℃

Part Number Designation

MRK012A-R- Z

Series

 

No. of poles

1: 1 pole
2: 2 poles

SW function

01: ON-ON
03: ON-ON-ON

Angle of throw

1: 45°
2: 90°

Key removable positions

Please see bellow

Terminals

Blank: PC straight
R: R/A

Key Removable Position

CodeKey position
A
B ×
D
G ×
L × ×

○: Removable  ×: Not removable

List of Part Numbers

 

 

 
 
Part No.CircuitNo. of polesTerminalsCircuit function
Part No.:MRK2031D-Z 45° step 3-position 2 poles PC straight ON-ON-ON
Part No.:MRK1031L-Z 45° step 3-position 1 pole R/A ON-ON-ON
Part No.:MRK1012A-Z 90° step 2-position 1 pole PC straight ON-ON
Part No.:☆MRK1012B-Z 90° step 2-position 1 pole PC straight ON-ON
Part No.:MRK1012A-R-Z 90° step 2-position 1 pole R/A ON-ON
Part No.:MRK1012B-R-Z 90° step 2-position 1 pole R/A ON-ON
☆: Semi-standard products / 
★: Made to order products

Angle of Throw

PC Hole Layouts

Precautions

◆Soldering Specifications
  • ①Manual Soldering
  • Device: Solder iron
  • 360℃ Max. 3 sec. Max.
  • ②Auto Soldering
  • Method: Jet wave or dip type
    275℃ Max. 6 sec. Max
    *Preheat should be within 80~120 ℃, 130 sec.
◆Flux Cleaning
  • ①Solvent : Alcohol type
  • ②MRK series are not washable. To wash the PC board, clean the soldering surface of the PC board with a brush so that the switch is not exposed to the cleaning solution.

Environmental Data

●The above contents and descriptions are subject to change without notice. 

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