SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE SMCD SERIES MINIATURE PUSHWHEEL SWITCHES FEATURES Miniature pushwheel switches with large visible readout characters. Models available with ESD protection - consult factory. Bi-directional snap action detent pushbutton mechanism. Black housing and drum with white printing. Gangable front and rear mounting models with spacers and side covers. Gold wiping action contacts. P.C. board options include solderable lands. SMCD SPECIFICATIONS Panel mounting hole: Height Width Installed depth with p.c. board: Short Long Insertion from front Insertion from rear MATERIALS Body: PPO .945"(24mm) .315"(8mm) PC board: 1.260"(32mm) 1.654"(42mm) yes yes FR 4 DIN 40802 IEC 249-2, Contact surface gold over nickel on copper Sliding contact: Gold over nickel on copper alloy CODES Code positions marking 111 Decimal 10 0-9 131 BCD 10 0-9 137 BCD comp 10 0-9 301 Hexadecimal 16 0-9, A-F(0-15) 400 change-over 10 +,-,+,-,etc.. see truth tables see truth tables see truth tables see truth tables see truth tables STANDARD COLORS Housing,Drum,Printing 2 = black 3 = white 2,2,3 T ELECTRICAL DATA Operating voltage: Contact load, static: Contact load, dynamic: Contact resistance (type AK): 40 V max. 1 A max. 100 mA max. less than 100 mOhm TECHNICAL DATA Operating temperature range: Electric life, min. switching cycles Actuation force, approx (oz.): Weight, approx. (grams): Character height: 10 digit 16 digit Audible click Vibration DIN IEC 68, parts 2-6 Shock DIN 40046, part 7 -20C to 80C 1,000,000 14 4 .193" (4.9mm) .134" (3.4mm) yes yes yes Other special features are available upon request including: Factory or customer set stops (10 digit models) L.E.D. illumination (transparent wheel) Red digits Decimal point Special codes or printing Gray housing See sockets at end of Pushwheel section. APEM, 63 NECK ROAD, HAVERHILL, MA USA 01835-0788 TOLL FREE: (877) 246-7890 FAX: (978) 372-3534 E-mail: info@apem.com T1 SMCD SERIES MINIATURE PUSHWHEEL SWITCHES TRUTH TABLES CODE 137 BCD COMP. C 1 2 4 8 C 1 2 4 8 C 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 CODE 301 HEXADECIMAL CODE 400 CHANGE-OVER A+ CODE 111 DECIMAL 1 2 4 8 C A0 1 2 3 4 5 6 7 8 9 A B C D E F + + + + + - C 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE CODE 131 BCD MECHANICAL OUTLINE WITH PANEL CUT-OUT & MOUNTING n = number of switches PIN CONNECTIONS T The switching mode is shorting - i.e. even during actuation, at least one output is connected to input C. "bl" is used for models ordered with L.E.D. illumination only. T2 131 1 2 131bl + 1 8 4 4 8 C 2 C - 137 1 2 137bl + 1 2 4 4 8 C 8 C - 301 1 2 301bl + 1 2 4 4 8 C 8 C - 400 C A- + A+ - 111 0 1 2 3 4 C 5 6 7 8 9 Pitch .079"(2mm) AK 111bl + 0 1 2 3 4 C 5 6 7 8 9 - Pitch .067"(1.7mm) + AL 111bl 0 1 2 3 4 C 5 6 7 8 9 Pitch .079"(2mm) 131 1 2 4 8 C 301 1 2 4 8 C APEM, 63 NECK ROAD, HAVERHILL, MA USA 01835-0788 TOLL FREE: (877) 246-7890 FAX: (978) 372-3534 E-mail: info@apem.com SMCD SERIES MINIATURE PUSHWHEEL SWITCHES PRINTED CIRCUIT OPTIONS SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE P.C. boards have .039" (1mm) holes and are suitable for soldering or socket connection (with the exception of LED illumination option). AK short p.c. board AL long p.c. board ALU long p.c. board LS p.c. board w/solder pins Allows customer to add resistors, diodes, ect. Ordering information: Below is an order format that enables you to 'build your own switch' and specify the correct switch model number by simply selecting from available options shown and filling in the boxes. Consult factory for fully assembled switches. 'BUILD YOUR OWN SWITCH' ORDER FORMAT Series model S Code P.C. board Terminations Standard colors M C D 2 1 1 1 3 4 1 3 3 0 0 1 1 7 1 0 Decimal BCD BCD comp. Hexadecimal. Change-over A K Short A L Long A L U Long (rt. angle) (NONE) L S with p.c. solder pins Black housing. & drum, white lettering. Example of complete model no.: SMCD137ALLS2 Order SP12 as a separate line item for limit stop pin (for 10 position models only). ACCESSORIES Order separately SMCL2 Dummy switches - These are empty plastic housings with the same dimensions as SMCD model (see outline). Use to fill hole where switch is not needed. SMCRD2 & SMCRND2 switches for rear mounting available on request. T SMCL2 Dummy housing SMCPK2 Pair of side covers SMCA2 Spacer SMCRL2 Dummy housing SMCPKH2 Pair of side covers SMCAH2 Spacer APEM, 63 NECK ROAD, HAVERHILL, MA USA 01835-0788 TOLL FREE: (877) 246-7890 FAX: (978) 372-3534 E-mail: info@apem.com T3