CHERRY MX Series Key Switch

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MX Series

Desktop Profile 0.60 Inch Keyswitches

Features

Desktop profile, 0.60 inch (15.2mm)
from PCB (no keycap)
Choice of feel: linear, soft tactile, click tactile
PCB or frame mount
Long life 50 million operations
4mm travel
LED, diode or jumper option
12V maximum AC/DC
Current Rating: 10mA
Insulation Resistance: <100MΩ at 100V DC

MX Series

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Specifications

Electrical

Voltage:	12 VAC/DC max. 2 VDC min.

Current:	10mA AC/DC max. 10µA DC min.

Insulation Resistance:	100MΩ at 100V

Initial Contact Resistance:	200mΩ (25mΩ typical)

Bounce Time:	≤5msec (at 16 in/sec. actuation speed)

Capacitance:	<2pF (at 1kHz)

Operating Temperature:	-10°C to +70°C

Storage Temperature:	-40°C to +70°C
Flammability Rating:	UL94HB

Materials

Case:	Thermoplastic

Contacts:	Silver-Gold?? (AuAg 10)

Spring:	Stainless Steel

Solderability:	Wave solder, 5 seconds at 500°F

Approvals

Dimensions

MX Dimensions

Inches (mm)

Mounting Options

Inches (mm)

Circuit Board LayoutS

Keyswitch without Fixation Pins

Keyswitch with Fixation Pins

Spacebar without Frame

grid line spacing = 0.05 inch (1.27mm)

Keycap Dimensions

Cylindrical Type (7mm)

Standard Type (8mm)

Actuation Specifications

Mechanical Motion	Linear Feel	Soft Tactile Feel	Click Tactile Feel
Operating Force	2.1 oz. ±0.7 oz.	2.0 oz. ±0.7 oz.	1.8 oz. ±0.5 oz.
Pretravel	0.08 in. ±0.024 in.	0.08 in. ±0.024 in.	0.09 in. ±0.024 in.
Total Travel	0.16 in. - 0.015 in.	0.16 in. - 0.02 in.	0.16 in. - 0.02 in.
Tactile Force	N/A	2.3 oz. ±0.7 oz.	2.1 oz. ±0.5 oz.

Spacebar Mounting Options

PCB (with pins)

Metal Frame (without pins)

Metal Frame Cutout Dimensions

Keyswitch

Spacebar (Keycap sizes 1x2, 1x2.5, 1x2.75)

Spacebar (Keycap sizes 1x3, 1x7, 1x8, 1x9, 1x10)

For dimension "A" refer to chart below. All dimensions shown are in inches.

Leveling Mechanism Kits

Keycap Size	1x2 1x2.5 1x2.75	1x3	1x8	1x8 1x9 1x10	1x7
Keycap Type	Standard & Cylindrical	Standard & Cylindrical	Standard	Cylindrical	Cylindrical
Dimension "A" (inches)	0.94	1.50	5.25	5.25	4.5
Part Number with Frame	G99-0224	G99-0225	G99-0226	G99-0226	G99-0379
Part Number without Frame	G99-0742	G99-0743	G99-0744	G99-0744	G99-0745

Ordering Information

Part Number Examples	Description

MX1A-11DN	Standard force, momentary, face plate mount with diode

MX1A-11NN	Standard force, linear, face plate mount

MX1A-11NW	Standard force, linear, PCB mount

MX1A-21NW	Higher force, linear, PCB mount

MX1A-C1NN	Standard force, soft tactile, face plate mount

MX1A-C1NW	Standard force, soft tactile, PCB mount

MX1A-E1NN	Standard force, click tactile, face plate mount

MX1A-E1NW	Standard force, click tactile, PCB mount

Ordering Information — Build a part number

Keyswitch
Series

10mA,
12V max.

Code	Contact Material
1	AuAg10, 10mA, 12V max.
5	Special

Code	Contact Config.
A	SPST NO
C	Special

Code	Operating Characteristics, Actuating Force and Key Style
0	Special
1	Momentary, single-pole, 2.1 oz., standard keyswitch, black keystem
2	Momentary, single-pole, 2.8 oz., spaceba, grey 37 keystem
C	Momentary, single-pole, tactile feel, 2.3 oz., clear keystem
D	Momentary, single-pole, tactile feel, 2.8 oz., spacebar, grey 39 keystem
E	Momentary, single-pole, tactile feel, 2.1 oz., "click"differential movement, blue keystem
F	Momentary, single-pole, tactile feel, 2.8 oz., "click"differential movement, spacebar, green keystem

Code	Keystem Config.
1	Standard straight for cylindrical and standard keycaps

Code	LED Diode
N	No LED, No diode
R	Red LED, No diode
G	Green LED, No diode
Y	Yellow LED, with diode
D	No LED, with diode
J	With Jumper Wire, no LED, no diode

Code	PCB Mountg Pins
N	No pins (metal frame required)
W	With pins

Specifications subject to change without notice.