Thru-Hole DIP Switches
SERIES 79B
Linear Action, Coded Output
FEATURES
• Reliable Switching, Positive Detent
• Codes in BCD and Hexadecimal
• True Zero Output
• 10 or 16 Positions
• 2000 Cycle Life
• Up to 60,000 Detent Operations
DIMENSIONS
In inches (and millimeters)
DIP Switches
CIRCUITRY
All dimensions not shown here are the same as those on the facing page.
0 1 2 3 4 5 6 7 8 9
0 1 2
4
8
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2
4
8
BINARY CODES
16
10
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0 1 2 4 8 0 1 2 4 8
TERMINAL LOCATIONS
C
L
C
L
.100 ± .005
(2,54 ± 0,13)
TYP.
.240 ± .005
(6.10 ± 0,13)
TYP.
C
L
C
L
.100 ± .005
(2,54 ± 0,13)
TYP.
.390 ± .005
(9,91 ± 0,13)
.490
± .005
(12,45
± 0,13)
SEE NOTE A
C C
L L
.100 ± .005
(2,54 ± 0,13)
TYP.
SEE NOTE A
C C
L L
.100 ± .005
(2,54 ± 0,13)
TYP.
Dot indicates contact made between
contact and output terminal.
NOTE A: All terminals on this side of the switch are bussed internally.
Any one of them may be used as the common terminal.
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:
100 mohms maximum
after life, measured at 10 mA dc and 50 mV
(open circuit). Initial values are 60 mohms
maximum for coded switches, and 50 mohms
for other linear action switches.
Insulation Resistance (at 100 Vdc):
Between adjacent isolated contacts: Initial:
5,000 Mohms minimum; After Life: 1,000
Mohms minimum
Across open contacts: Initial: 5,000 Mohms
minimum; After Life: 1,000 Mohms minimum
Dielectric Strength:
Between adjacent isolated
contacts and across open contacts. Initial: 750
Vac; After Life: 500 Vac
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; 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
microseconds (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 Seal and Packaging
Tape Seal:
Polyester film
Environmental Ratings
Refer to MIL-STD-202F per MIL-S-83504
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
6
Part Number*
79B10T
79B16T
ORDERING INFORMATION
Number of Positions
10
16
Type of Circuit Code
Binary Code Decimal
Hexadecimal
*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.
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales
Office, an authorized local Distributor or Grayhill.
SWITCH POSITIONS
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
DIP
16
GRAYHILL [ GRAYHILL, INC ]
