EAO Switch Corporation [81 10101 00,81 12151 00,81 20101 02,81 22151 02,81 20101 03,81 22151 03,81 20101 04,81 22151 04]

Beckwith Electronics

824 Horan Drive, Fenton, Mo 63026
(636) 343-6463
(636) 343-7026 fax

EAO SECME Division

COSMOS Illuminated or non- illuminatedtactile feel key switches
Dependable COSMOS key switch modules offer a distinct tactile feel for use with all types of instruments, controls, and equipment. Contacts and terminals are sealed against dust, liquid splashes, wave soldering flux, and washdown solvents. Illuminated COSMOS models combine LEDs with a selection of lens styles suitable for panel use or for installation under membrane-type overlays. The small size and square shape allow the modular switches to be used as building blocks on a 2.54 mm matrix. Standard silver or heavy gold plated contacts 12.3 x 12.3 mm square matrix modules LED full-lens illuminated models available Selection of buttons, lenses, covers, and legends Sealed for soldering and immersion solvent cleaning 1-million operations

COSMOS Illuminated or non- illuminatedtactile feel key switches

Dependable COSMOS key switch modules offer a distinct tactile feel for use with all types of instruments, controls, and equipment. Contacts and terminals are sealed against dust, liquid splashes, wave soldering flux, and washdown solvents. Illuminated COSMOS models combine LEDs with a selection of lens styles suitable for panel use or for installation under membrane-type overlays. The small size and square shape allow the modular switches to be used as building blocks on a 2.54 mm matrix.

Standard silver or heavy gold plated contacts
12.3 x 12.3 mm square matrix modules
LED full-lens illuminated models available
Selection of buttons, lenses, covers, and legends
Sealed for soldering and immersion solvent cleaning
1-million operations

Specifications
Contacts: standard silver plated (2 u)	24 V/125 mA nominal 50V max. 100 mV/10mA min. 3 W nominal power
heavy gold plated (0.5 u)	24 V/125 mA nominal 50V max 10 mV/500 uA min 3 W nominal power both: <20 M Ohms resistance
Dielectric strength	300 V RMS, 50 Hz
Insulation resistance	>1,000 M Ohms, 100 VDC
Insulation, self-extinguishing	glass-filled polyamide, 94V-0 (UL94)
Operating force	3 N
Operating travel	0.4 mm nominal, 0.65 mm max
Overtravel	0.25 mm
Maximum bounce	<100 usec
Operating life	1-million operations
Vibration resistance	2000/10 Hz, 1.5 mm amplitude
Mechanical shock resistance	100 G
Terminals: standard silver heavy gold	silver over nickel gold on nickel
Operating temperature	-25 to + 85°C
Storage temperature	-40 to + 85°C
Damp heat standard silver heavy gold	10 days (NFC 20603) 21 days (NFC 0603)
Saline mist standard silver heavy gold	24 hours (NFC 20611) 96 hours (NFC 20611)
Sealing	Sealed for soldering and immersion cleaning in solvents (IEC 68-2-45)
Soldering time	5 sec/250°C

Ordering Information

Description Part Number

Standard Silver
Contacts Heavy Gold
Contacts

1-pole 2-position non-illuminated

81 10101 00 81 12151 00

1-pole 2-position illuminated

Red LED 81 20101 02 81 22151 02

Green LED 81 20101 03 81 22151 03

Yellow LED 81 20101 04 81 22151 04

Ordering Information
Description	Part Number
Standard Silver Contacts	Heavy Gold Contacts
1-pole 2-position non-illuminated
	81 10101 00	81 12151 00
1-pole 2-position illuminated
Red LED	81 20101 02	81 22151 02
Green LED	81 20101 03	81 22151 03
Yellow LED	81 20101 04	81 22151 04

Independent LED circuit

EAO SECME Division

Dimensions & Mounting