grayhill, inc. ? 561 hillgrove avenue ? lagrange, illinois 60525-5997 ? usa ? phone: 708-354-1040 ? fax: 708-354-2820 ? www.gra yhill.com dip switches series 79a linear action circuit selector series 79c linear action tap features single-setting programming isolated or bussed circuits 10 or 16 positions 125 ma, 6 vdc, 2000 cycles dimensions in inches (and millimeters) circuit selector isolated circuits in 10 and 16 positions each position is a single isolated circuit, which connects the two terminals across the switch package. the movable contact is non-shorting. tap switch sp/10 positions, and sp/16 postions all contacts on one side of the switch are internally bussed for a common pole. any terminal on that side may be used as a common, the others may be clipped. the movable contact is non-shorting. circuitry specifications electrical ratings make-and-break current rating: 2,000 cycles at 10 ma, 50 mvdc; 2,000 cycles at 125 ma, 6 vdc; 2,000 cycles at 50 ma, 30 vdc. contact resistance: (measured at 10 ma, 50 mvdc) coded switches: 60 mohms maximum initially. other switches: 50 mohms maximum initially. after life: 100 mohms maximum insulation resistance (at 100 vdc): between adjacent isolated contacts: initial:5,000 mohms; 1,000 mohms minimum after life. across open contacts: initial: 5,000 mohms; 1,000 mohms minimum after life. dielectric strength: between adjacent isolated contacts and also across open contacts. initially: 750 vac: 500 vac after life contact carry rating: 2 amps with a maximum contact temperature rise of 20c mechanical ratings mechanical life: 4,000 cycles maximum. note: a cycle is one complete operation, back and forth through all switch positions. vibration resistance: 10 to 2,000 hz at 15g or 0.060" double amplitude, per mil-std-202f per mil-5-83504; method 213, condition a. no damage and no contact openings exceeding 10 ms (method 204, test condition b). shock resistance: 509, 11 ms, half sine; no damage and no openings exceeding 10 ms (method 213, test condition a). environmental rating operating temperature range: -40c to +85c storage temperature range: -55c to +85c moisture resistance: 240 hours with temperature cycling and polarization, per mil- std-202f, method 305 materials and finishes nonconductive parts: plastic ul94v-o shorting arm: phosphor bronze, gold plate over nickel plate base contacts: copper alloy, gold plate over nickel plate terminals: copper alloy, matte tin plated over nickel barrier. potting material: epoxy tape and seal packaging seal strength: per mil-std-202, method 112. 30 seconds at 125 hot fluorocarbon solderability: per mil-std-202, method 208. tape seal: polyester film available from your local grayhill distributor. for prices and discounts, contact a local sales office, an authorized local distributor or grayhill. circuit selector tap switch 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 dimension a .010 (0,25) .395 .010 (10,03 0,25) .100 .005 (2,54 0,13) .020 .002 (0,51 0,05) typ. .100 .005 (2,54 0,13) typ. .140 .005 (3,56 0,13) typ. .190 .010 (4,83 0,25) .250 .010 (6,35 0,25) .080 .005 (2,03 0,13) .145 + .010 ? .015 (3,68 + 0,25 ?0,38) typ. .050 .005 (1,27 0,13) typ. .015/.020 (0,38/0,51) typ. .012 .001 (0,30 0,03) typ. .180 .010 (4,57 0,25) .300 + .030 ? .000 (7,62 + 0,76 ? 0,00) c l c l c l c l dimension a for 10 position switch: 1.180 .010 (29,97 0,25) for 16 position switch: 1.780 .010 (45,21 0,25) number of positions type of circuit code number per tube part number* 10 circuit selector 9 79a10t 10 single pole 9 79c10t 16 circuit selector 6 79A16T 16 single pole 6 79c16t ordering information *a top tape seal is required for switches that are machine soldered or heavily cleaned after hand soldering. to order top seal versions, add "s" before the "t" in the grayhill part number. dip 15 thru-hole dip switches
|
