DIP Switches Thru-Hole DIP Switches SERIES 79B Linear Action, Coded Output FEATURES • Reliable Switching, Positive Detent • Codes in BCD and Hexadecimal • True Zero Output • 10 or 16 Positions • 2000 Cycle Life • Up to 60,000 Detent Operations CIRCUITRY DIMENSIONS In inches (and millimeters) All dimensions not shown here are the same as those on the facing page. 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 A B C D E F BINARY CODES 16 10 0 1 2 4 8 0 1 2 4 8 0 1 2 3 4 5 6 7 .490 .100 ± .005 .100 ± .005 8 ± .005 (2,54 ± 0,13) (2,54 ± 0,13) 9 C C (12,45 TYP. TYP. L L A ± 0,13) .390 ± .005 .240 ± .005 B (9,91 ± 0,13) (6.10 ± 0,13) C C C L L TYP. D E F 01 248 0 1 2 4 8 TERMINAL LOCATIONS Dot indicates contact made between .100 ± .005 .100 ± .005 contact and output terminal. SEE NOTE A (2,54 ± 0,13) SEE NOTE A (2,54 ± 0,13) C C C C L L L L TYP. TYP. NOTE A: All terminals on this side of the switch are bussed internally. Any one of them may be used as the common terminal. SPECIFICATIONS contact temperature rise of 20°C. Electrical Ratings Make-and-break Current Rating: 2,000 cycles Mechanical Ratings Materials and Finishes at 10 mA, 50 mVdc; 2,000 cycles at 125 mA, 6 Mechanical Life: 4,000 cycles maximum. Note: Nonconductive Parts: Plastic UL94V-O Vdc; 2,000 cycles at 50 mA, 30 Vdc. a cycle is one complete operation, back and Shorting Arm: Phosphor bronze, gold plate Contact Resistance: 100 mohms maximum forth through all switch positions. over nickel plate after life, measured at 10 mA dc and 50 mV Vibration Resistance: 10 to 2,000 Hz at 15G or Base Contacts: Copper alloy, gold plate over (open circuit). Initial values are 60 mohms 0.060" double amplitude; no damage and no nickel plate maximum for coded switches, and 50 mohms contact openings exceeding 10 mS (Method Terminals: Copper alloy, matte tin plated over for other linear action switches. nickel barrier 204, Test Condition B). Insulation Resistance (at 100 Vdc): Shock Resistance: 509, 11 mS, half sine; no Potting Material: Epoxy Between adjacent isolated contacts: Initial: damage and no openings exceeding 10 5,000 Mohms minimum; After Life: 1,000 microseconds (Method 213, Test Condition A). Tape Seal and Packaging Mohms minimum Tape Seal: Polyester film Across open contacts: Initial: 5,000 Mohms Environmental Ratings minimum; After Life: 1,000 Mohms minimum Refer to MIL-STD-202F per MIL-S-83504 Dielectric Strength: Between adjacent isolated Operating Temperature Range: -40°C to +85°C contacts and across open contacts. Initial: 750 Storage Temperature Range: -55°C to +85°C Vac; After Life: 500 Vac Moisture Resistance: 240 hours with Contact Carry Rating: 2 amps with a maximum temperature cycling and polarization, per MIL- STD-202F, Method 305 ORDERING INFORMATION Number of Positions Type of Circuit Code Number per Tube Part Number* 10 Binary Code Decimal 9 79B10T 16 Hexadecimal 6 79B16T Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales *A top tape seal is required for switches that are machine soldered or heavily cleaned after hand Office, an authorized local Distributor or Grayhill. soldering. To order top seal versions, add "S" before the "T" in the Grayhill part number. DIP Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com 16 SWITCH POSITIONS