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.
C C
L L
CC
L L
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 20°C
Switch Capacitance:
2 pF at 1megahertz
Terminal Strength:
Per specification
Thermal Aging:
1,000 hours at 85°C; 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:
-40°C to +
85°C
Storage Temperature Range:
-55°C to + 85°C
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:
220°C–230°C (1 pass—260°C 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
GRAYHILL [ GRAYHILL, INC ]
