1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 2 3 4 4 DIP Switches Surface Mount DIP Switches SERIES 78H FEATURES SPDT and DPST Compatible with SMT Assembly Including Infrared Reflow and Vapor-Phase Reliable Spring and Ball Contact DIMENSIONS In inches (and millimeters) SPDT, DPST, Top Actuated, Slide Operated Recommended PC Pad Dimensions LENGTH .010 (0,25) .380 .010 SEE ORDER INFO (9,65 0,25) .025 .055 .010 (5,84) .530 .280 (7,11) (1,40 0,25) REF. .268 .010 (13,46) TYP. .025 (0,64) R. (6,81 0,25) TYP. .303 .015 .100 .005 .295 + .000 .020 .070 (1,78) TYP. (7,70 0,38) C (2,54 0,13) TYP. .012 .001 C (7,49 0,51) L .100 (2,54) TYP. L .424 .015 (0,30 0,03) C C (10,77 0,38) TYP. L L TYP. CIRCUITRY with all actuators in the closed (on) position as SPDT 2 Circuits (no common) DPST shipped. 1 1 11 ON ON Materials and Finishes Dot indicates active circuit. Shorting Member: Brass, gold-plated over nickel barrier. OFF ON Base Contacts: Copper alloy, gold-plated over nickel barrier. SPECIFICATIONS Mechanical Shock: Per Method 213, Test Terminals: Copper alloy, matte tin-plated over Condition A. 1 mS opening (10 mS allowed) nickel barrier. Electrical Ratings Terminal Strength: Per specification Non-Conductive Parts: Cover is natural color Make-and-break Current Rating: 2,000 Thermal Aging: 1,000 hours at 85C no thermoplastic, actuators are white thermoplastic operations per switch position at 1 mA, 5 Vdc failures (UL94V-O) 50 mA, 30 Vdc or 150 mA, 30 Vdc Thermal Shock: Per specification no failures Contact Resistance: Initial: 30 mohms max. TAPE AND REEL PACKAGING passes contact resistance After Life: 100 mohms max. (10 mA at 50 Vdc, Meets requirements of EIA 481-2 or open circuit) Insulation Resistance: Minimum, at 100 Vdc Environmental Ratings EIA 481-3 Meets all requirements of MIL- S-83504**. Where between adjacent closed contacts and also 13 INCH across open switch contacts. Initial: 2,000 Grayhill performance is superior, the MIL spec is DIAMETER REEL Mohms After Life: 1,000 Mohms listed in parentheses. Operating Temperature Range: -40C to + Dielectric Strength: Minimum voltage (AC, RMS) CONDUCTIVE PLASTIC EMBOSSED measured between adjacent closed contacts 85C TAPE Storage Temperature Range: -55C to + 85C and also across open switch contacts. Initial: 750 volts After Life: 500 volts Moisture Resistance: Per MIL-STD-202, Method Current Carry Rating: 4 amps, maximum rise 106 DIRECTION of 20C OF FEED Switch Capacitance: 2 pF at 1megahertz Soldering Information 16 & 24mm 16mm TAPE Solderability: Per MIL-STD-202, Method 208 Soldering Heat Resistance: Per MIL-S-83504, Mechanical Ratings 1 1 1 Mechanical Life: 2,000 operations per switch six second test Recommended Processing Temperature: position 1 1 1 Vibration Resistance: Per method 204, Test 220C230C (1 pass260C maximum) 2 2 2 Condition B. 1 mS opening (10 mS allowed) Processing Position: Switch is to be processed 3 3 3 4 4 4 ORDERING INFORMATION: Tube Packaging No. of Length Length Carrier Width Part Number* 16mm 32 & 44mm Positions (inches) (metric) Dim. A SPDT DPST TAPE PIN ONE LOCATION 1 0.280 7,1 mm 24 mm 78HJ01GWT 78HF01GWT COVER TAPE 2 0.480 12,2 mm 24 mm 78HJ02GWT 78HF02GWT DIM. A (SEE ORDER INFO.) 3 0.680 17,3 mm 32 mm 78HJ03GWT 78HF03GWT 4 0.880 22,4 mm 44 mm 78HJ04GWT 78HF04GWT Each reel has a 15.750 inch (390 mm) * Insert before the in the Grayhill part number for tape and reel packaging (500 switches/reel). minimum leader and a 6.30 inch (160 mm) ** Note: 100% matte tin terminal plating does not meet MIL-S-83504 for lead content. minimum trailer. Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. Grayhill, Inc. 561 Hillgrove Avenue LaGrange, Illinois 60525-5997 USA Phone: 708-354-1040 Fax: 708-354-2820 www.grayhill.com