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Surface Mount DIP Switches
SERIES 78H
SPDT and DPST
FEATURES * Compatible with SMT Assembly Including Infrared Reflow and Vapor-Phase * Reliable Spring and Ball Contact
DIMENSIONS
In inches (and millimeters) Recommended PC Pad Dimensions
LENGTH .010 (0,25) SEE ORDER INFO .530 (13,46) TYP. .100 .005 (2,54 0,13) TYP. .295 + .000 - .020 (7,49 - 0,51) .070 (1,78) TYP. .100 (2,54) TYP. .280 (7,11) TYP.
SPDT, DPST, Top Actuated, Slide Operated
.380 .010 (9,65 0,25) .023 .055 .010 (5,84) (1,40 0,25) REF. .025 (0,64) R. .303 .015 (7,70 0,38) .424 .015 (10,77 0,38) TYP.
.268 .010 (6,81 0,25)
.012 .001 (0,30 0,03) TYP.
CC LL
CC LL
CIRCUITRY
SPDT 2 Circuits (no common)
1 1
ON
DPST
1
ON
1
Dot indicates active circuit.
Materials and Finishes
Shorting Member: Brass, gold-plated over nickel barrier. Base Contacts: Copper alloy, gold-plated over nickel barrier. Terminals: Copper alloy, matte tin-plated over nickel barrier. Non-Conductive Parts: Cover is natural color thermoplastic, actuators are white thermoplastic (UL94V-O)
DIP Switches
OFF
ON
SPECIFICATIONS
Electrical Ratings
Make-and-break Current Rating: 2,000 operations per switch position at 1 mA, 5 Vdc; 50 mA, 30 Vdc; or 150 mA, 30 Vdc Contact Resistance: Initial: 30 mohms max. After Life: 100 mohms max. (10 mA at 50 Vdc, open circuit) Insulation Resistance: Minimum, at 100 Vdc between adjacent closed contacts and also across open switch contacts. Initial: 2,000 Mohms; After Life: 1,000 Mohms Dielectric Strength: Minimum voltage (AC, RMS) measured between adjacent closed contacts and also across open switch contacts. Initial: 750 volts; After Life: 500 volts Current Carry Rating: 4 amps, maximum rise of 20C Switch Capacitance: 2 pF at 1megahertz Terminal Strength: Per specification Thermal Aging: 1,000 hours at 85C; no failures Thermal Shock: Per specification; no failures; passes contact resistance
TAPE AND REEL PACKAGING
Meets requirements of EIA 481-2 or EIA 481-3
13 INCH DIAMETER REEL CONDUCTIVE PLASTIC EMBOSSED TAPE
4 3 2 1
Environmental Ratings
Meets all requirements of MIL- S-83504. Where Grayhill performance is superior, the MIL spec is listed in parentheses. Operating Temperature Range: -40C to + 85C Storage Temperature Range: -55C to + 85C Moisture Resistance: Per MIL-STD-202, Method 106
4 3 2 1
Soldering Information
Solderability: Per MIL-STD-202, Method 208 Soldering Heat Resistance: Per MIL-S-83504, six second test Recommended Processing Temperature: 220C-230C (1 pass--260C maximum) Processing Position: Switch is to be processed with all actuators in the closed (on) position as shipped.
4 3 2 4
DIRECTION OF FEED 16mm 16 & 24mm TAPE
1 1
4 3 2 1
Mechanical Ratings
Mechanical Life: 2,000 operations per switch position Vibration Resistance: Per method 204, Test Condition B. 1 mS opening (10 mS allowed) Mechanical Shock: Per Method 213, Test Condition A. 1 mS opening (10 mS allowed)
1
3
1
2 4
1 2 3 4
1 2 3 4
1 2 3 4
ORDERING INFORMATION: Tube Packaging
No. of Positions 1 2 3 4 5 Length (inches) 0.280" 0.480" 0.680" 0.880" 1.080" Length (metric) 7,1 mm 12,2 mm 17,3 mm 22,4 mm 27,4 mm Carrier Width Dim. A 24 mm 24 mm 32 mm 44 mm 44 mm Part Number* SPDT DPST 78HJ01GWT 78HJ02GWT 78HJ03GWT 78HJ04GWT 78HJ05GWT 78HF01GWT 78HF02GWT 78HF03GWT 78HF04GWT 78HF05GWT
16mm PIN ONE LOCATION COVER TAPE
32 & 44mm TAPE
DIM. A (SEE ORDER INFO.)
Each reel has a 15.750 inch (390 mm) minimum leader and a 6.30 inch (160 mm) minimum trailer.
* Insert "R" before the "T" in the Grayhill part number for tape and reel packaging (500 switches/reel). Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
DIP 7
Grayhill, Inc. * 561 Hillgrove Avenue * LaGrange, Illinois 60525-5997 * USA * Phone: 708-354-1040 * Fax: 708-354-2820 * www.grayhill.com

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