Thru-Hole DIP Switches
SERIES 78B
Right Angle Option
FEAtuRES
• Easy Access
• SPST Circuitry
•
1-10
and 12 positions available
• Sealed versions available
ApplIcAtIOnS
Telecommunications, computers
and peripherals, instruments and
controls.
Series 78B DIMEnSIOnS
in inches (and millimeters)
DIP Switches
Right Angle Assemblies As Shipped
Right Angle Assemblies As Installed
SpEcIFIcAtIOnS
Mechanical life:
2,000 operations per
switch.
Operation temp:
-40°C to + 85°C
Storage temp:
-55°C to + 85°C
Vibrationtest:
Per Method 204, Test Condition
B, 1 mS opening (10 mS allowed)
Shock test:
MIL-STD-202F METHOD 213
Test Condition A, 1ms (10 allowed)
Electrical life:
10,000 operations per switch
24VDC, 25mA.
non-Switching Rating:
100mA, 50VDC.
Switching rating:
150mA, 30DVC;
10mA, 50mVDC
contact Resistance:
30mΩ max. at initial.
Insulation Resistance:
(at 100VDC) 5,000MΩ
min.
Dielectric Strength:
750VAC/1 minute.
capacitance:
2pF max.
Mechanical
Soldering and cleaning process
cleaning tape sealed products:
Passes immersion test using water/
detergent. Acceptable solutions include 1-1-
1 trichlorethane, freon, (TF, TE, or TMS),
isopropyl alcohol, detergent (140°F
maximum). Terpene acceptable for Series 90
only. Solutions which are not recommended
include acetone, methylene chloride, freon
TMC
.
Pressure wash
cleaning processes are
not recommended for tape seal switches.
Wave Soldering:
Recommended solder
temperature: 500°F (260C) max 5 seconds.
Hand Soldering:
Use a soldering iron of
30 Watts or less, controlled at 608°F (320°
C) approximately 2 seconds while applying
solder.
cleaning:
Tape sealed versions withstand
cleaning processes.
*For the most current soldering & cleaning processing
guidelines, reference Grayhill Dip Switch Processing
Information, Bulletin 1234
Electrical
contact Ball:
Brass with gold plating over
nickel
terminals:
Brass with gold plating over
nickel
nonconductive parts:
Plastic UL94V-0
potting Material:
Epoxy
Shorting Member (Ball):
Brass, gold-plated
over nickel barrier.
protective cover:
Polycarbonate.
tape Seal:
Polyester film
tape Seal Integrity:
Passes gross leak test
using 125°C flourinert for 20 seconds minimum.
Reference MIL-STD-202, Method 112.
Materials
ORDERInG InFORMAtIOn
Series
78B, 78F, 78G, 78H, 78J, 78K, 78RB
Styles available as right angle
number of positions
1
through 12
(depending on Series)
RoHS compliant
Right Angle
S=
Top Tape Sealed, Blank=Unsealed
78B08SRAt
78R
78K
78H
78F
78J
Tape Sealed
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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