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
Circuit Selector
Tap Switch
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.
SP/10 Positions, and SP/16 Postions
Allcontactsononesideoftheswitchareinternally
bussed for a common pole. Any terminal on that
side may be used as a common, the others may
beclipped.Themovablecontactisnon-shorting.
• 125 mA, 6 Vdc, 2000 Cycles
CIRCUITRY
DIMENSIONS In inches (and millimeters)
Circuit Selector
DIMENSION A
DIMENSION A
ꢀ.0. ꢁ.ꢂ,25
For 0. Tosition Switch:
0ꢀ08. ꢀ.0. ꢁ,9ꢂ97 .ꢂ,25
For 0ꢄ Tosition Switch:
0ꢀ78. ꢀ.0. ꢁ42ꢂ,0 .ꢂ,25
1
2 3 4 5 6 7 8 9 10
ꢀ392 ꢀ.0.
ꢁ0.ꢂ.3 .ꢂ,25
ꢀ.8. ꢀ..2
ꢁ,ꢂ.3 .ꢂ035
ꢀ0.. ꢀ..2
ꢀ.02/ꢀ.,.
ꢁ.ꢂ38/.ꢂ205
)ꢃTꢀ
ꢀ042 + ꢀ.0. – ꢀ.02
ꢁ3ꢂꢄ8 + .ꢂ,2 –.ꢂ385
ꢁ,ꢂ24 .ꢂ035
)ꢃTꢀ
ꢀ,2. ꢀ.0.
ꢁꢄꢂ32 .ꢂ,25
Tap Switch
ꢀ09. ꢀ.0.
ꢁ4ꢂ83 .ꢂ,25
ꢀ.0, ꢀ..0
ꢁ.ꢂ3. .ꢂ.35
)ꢃTꢀ
1
2 3 4 5 6 7 8 9 10
ꢀ.,. ꢀ.., ꢁ.ꢂ20 .ꢂ.25 )ꢃTꢀ
ꢀ0.. ꢀ..2 ꢁ,ꢂ24 .ꢂ035 )ꢃTꢀ
ꢀ04. ꢀ..2 ꢁ3ꢂ2ꢄ .ꢂ035 )ꢃTꢀ
ꢀ.2. ꢀ..2
ꢁ0ꢂ,7 .ꢂ035
)ꢃTꢀ
ꢀ08. ꢀ.0.
ꢁ4ꢂ27 .ꢂ,25
C
L
ꢀ3.. + ꢀ.3. – ꢀ...
C
ꢁ7ꢂꢄ, + .ꢂ7ꢄ – .ꢂ..5
L
C
C
L
L
SPECIFICATIONS
Electrical Ratings
Mechanical Ratings
Materials and Finishes
MechanicalLife:4,000cyclesmaximum. Note:
Make-and-breakCurrentRating:2,000cycles a cycle is one complete operation, back and
Nonconductive Parts: Plastic UL94V-O
Shorting Arm: Phosphor bronze, gold plate
over nickel plate
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 per MIL-5-83504; Method 213, Condition A. No
forth through all switch positions.
Vibration Resistance: 10 to 2,000 Hz at 15G
or 0.060" double amplitude, per MIL-STD-202F
Base Contacts: Copper alloy, gold plate over
nickel plate
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.
DielectricStrength:Betweenadjacentisolated
contactsandalsoacrossopencontacts.Initially:
750 Vac: 500 Vac after life
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).
Terminals: Copper alloy, matte tin plated over
nickel barrier.
Potting Material: Epoxy
Tape and Seal Packaging
SealStrength:PerMIL-STD-202,Method112.
30 seconds at 125° hot Fluorocarbon
Solderability: Per MIL-STD-202, Method 208.
Tape Seal: Polyester film
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
ContactCarryRating:2Ampswithamaximum
contact temperature rise of 20°C
AvailablefromyourlocalGrayhillDistributor.
For prices and discounts, contact a local Sales
Office,anauthorizedlocalDistributororGrayhill.
ORDERING INFORMATION
Number of Positions
Type of Circuit Code
Number per Tube
Part Number*
10
10
16
16
Circuit Selector
Single Pole
Circuit Selector
Single Pole
9
9
6
6
79A10T
79C10T
79A16T
79C16T
*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.
DIP
1 5
Grayhill, Inc.
• 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com