Thru-Hole 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
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.
DIMENSIONS
In inches (and millimeters)
DIMENSION A
For 10 Position Switch:
1.180 ± .010 (29,97 ± 0,25)
For 16 Position Switch:
1.780 ± .010 (45,21 ± 0,25)
.080 ± .005
(2,03 ± 0,13)
DIMENSION A
± .010 (0,25)
CIRCUITRY
Circuit Selector
.395 ± .010
(10,03 ± 0,25)
1 2 3 4 5 6 7 8 9 10
DIP Switches
DIP
15
.015/.020
(0,38/0,51)
TYP.
.145 + .010 – .015
(3,68 + 0,25 –0,38)
TYP.
.100 ± .005
(2,54 ± 0,13)
.250 ± .010
(6,35 ± 0,25)
.190 ± .010
(4,83 ± 0,25)
Tap Switch
.012 ± .001
(0,30 ± 0,03)
TYP.
.180 ± .010
(4,57 ± 0,25)
C
L
.050 ± .005
(1,27 ± 0,13)
TYP.
.300 + .030 – .000
C
(7,62 + 0,76 – 0,00)
L
.020 ± .002 (0,51 ± 0,05) TYP.
.100 ± .005 (2,54 ± 0,13) TYP.
1 2 3 4 5 6 7 8 9 10
C
L
C
L
.140 ± .005 (3,56 ± 0,13) TYP.
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 20°C
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).
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.
Environmental Rating
Operating Temperature Range:
-40°C to
+85°C
Storage Temperature Range:
-55°C to +85°C
Moisture Resistance:
240 hours with
temperature cycling and polarization, per MIL-
STD-202F, Method 305
Number per Tube
9
9
6
6
Part Number*
79A10T
79C10T
79A16T
79C16T
ORDERING INFORMATION
Number of Positions
10
10
16
16
Type of Circuit Code
Circuit Selector
Single Pole
Circuit Selector
Single Pole
*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.
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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