Mechanical switches other than ALPS or Cherry

 FUJITSU,  FUTABA,  Mitsumi, NEC,  OMRON,  SMK,  Miscellaneous 

　

Fujitsu Leaf Spring

FMV  KB211

P/N N8760-2354-T001
Fujitsu Leaf Spring Switch/Non click, linear 
親指シフトキーボード
Fujitsu proprietary keyboard for old Fujitsu FMV system
Connector;  vender specific 

　

Futaba Switch

Datacomp Electronics Co., Ltd.
AT 84 Key Clone  AT 84 Key Clone

Model No N/A
FCC ID FBX5E9DFDK777
White slider/Clik
AT/XT switchable
Curled cable/ AT plug
Futaba Old Complicated Switch  

　

Mitsumi Switch

Apple Computer  Extended II
Family Number M3501
FCC ID BCGM3501
White slider ( in a white housing )/ Linear  
Made in Japan
Zenith  ZKB-2
MFG'S E. I .A    343
White slider/Linear
MFD DATE   MAR 1990
MADE IN TAIWAN

　

NEC Switch 

NEC Japan
PC-8801 Keyboard
Model No. Unknown
Curled cable with a proprietary 14 pin plug 

Switch is branded as  NEC  ( Suspected as SMK OEM  )
Blue slider; Linear
Switches used on NEC PC9801 series,   oval slider, basically Linear
Color of slider
Black,  Half translucent white, White, Cream

Exceptionally Blue/click used in several AT keyboards  
Low profile switch branded as NEC

Detail ; Square key stem,   Linear action
       (  Seems like derived from ALPS oval key stem switch )

　

OMRON Switch

Focus Electronic
Model No. Unknown  ( FK-555 ? )
FCC ID: FSQ4VY FK-555 
OMRON/Blue slider/Click 
AT/XT selectable
Curled cable/AT Plug
Nan Tan
Model No. KB-6151ER
FCC ID: FMA44HKB6151ER
OMRON/Amber slider/Click 
AT/XT selectable

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LEO Keyboard
Model No. KB-6251
FCC ID: FMA44HKB6251 
OMRON/Amber slider/Click 
AT/XT selectable
Omron Linear switch ( new type)

 2 pins at the bottom
 available in either Linear or Click
　 　

　

SMK and fake SMK  Switch

　 　
Chicony KB-5181

FCC ID  E8H51KKB-5181
Switch; Unknown ( fake SMK ? ) White square slider
Aug. '91 Made in Thailand

DTK Computer
Model NO. MBK-1013  

FCC ID : F825KSPK102
SMK Switch ( white round slider )

　
NEC PC8801 Keyboard

Key switch supplied by SMK but not yet confirmed so far
source: wiki article SMK vintage linear at  Deskthority.net 

　

Miscelaneous

Fluke Y1700
FCC ID; Unknown
Switch; Unknown ,  Linear Action
AT PLUG
Not compatible with Windows PC
Made In USA ,  John Fluke MFG. CO. Inc.

Cherry MX switch  older type
 
supposed to be coded as M7x
　 　
　 　
　 　
　 　

　

　　　　　

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