Thru-Hole DIP Switches
SꢀꢁCIFICATIOꢂS: Standard Styles
Ratings
76
2,000
78
2,000
90B
2,000
Mechanical Life: Operations per switch position
Make-and-break Current Rating: Operations
per switch position at these resistive loads
1 mA, 5 Vdc; 50 mA, 30 Vdc; or 150 mA, 30 Vdc:
10 mA, 30 Vdc; or 10 mA, 50 mVdc:
2,000
—
—
2,000
—
—
—
2,000
2,000
10 mA, 50 mVdc; or 25 mA, 24 Vdc; or 100 mA, 6 Vdc:
Contact Resistance: Initially:
≤ 30 mΩ
≤ 30 mΩ
≤ 20 mΩ
After life, at 10 mA, 50 mVdc, open circuit:
≤ 100 mΩ
≤ 100 mΩ
≤ 100 mΩ
Insulation Resistance:
Minimum, at 100 Vdc between adjacent closed
contacts and also across open switch contacts
Initially (Mohms):
5,000
1,000
5,000
1,000
5,000
1,000
After life (Mohms):
Dielectric Strength: Minimum voltage (AC,
RMS) measured between adjacent closed
contacts and also across open switch contacts.
lnitially:
750 V
500 V
750 V
500 V
500 V
500 V
After life:
Current Carry Rating: Maximum rise of 20°C
Switch Capacitance: At 1 megahertz
Operating Temperature Range:
5 A
4 A
3 A
2 pF
2 pF
2 pF
-40°C to + 85°C
-55°C to + 85°C
-40°C to + 85°C
-55°C to + 85°C
-40°C to + 85°C
-55°C to + 85°C
Storage Temperature Range:
Materials and Finishes
Shorting Member (Ball): 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: Thermoplastic
(UL94V-O)
Soldering Information
Mechanical Ratings
*For the most current soldering & cleaning processing
guidelines, reference Grayhill Dip Switch Processing
Information, Bulletin 1234
Vibration Resistance: ꢀer Method 204, Test
Condition B, 1 mS opening (10 mS allowed)
Mechanical Shock: ꢀer Method 213, Test
Condition A. 1 mS opening (10 mS allowed)
Thermal Shock Resistance: ꢀer specification;
no failures; passes contact resistance.
Terminal Strength: ꢀer specification
Series 90 MIDIꢀ and Series 76 recessed rocker
(76RSB style) sealed switches have been
tested to ꢁIA Standard RS-448-2. Similar
performance can be expected from other
sealed Series 76 and 78 DIꢀ switches.
Solderability: ꢀer MIL-STD-202, Method 208
Resistance to Soldering Heat: 76RSB:
ꢀasses ꢁIA Standard using two, four, and six
second soldering time. 90: ꢀer MIL-S-83504,
six second test.
ThermalAging:1,000hoursat85°C;nofailures.
Potting Material: ꢁpoxy, 76,78 only.
Protective Cover: 76,78, only-ꢀolycarbonate.
Tape Seal:
Environmental Ratings
Meets all requirements of MIL- S-83504.**
WhereGrayhillperformanceissuperior,theMIL
spec is listed in parentheses.
76, 78: ꢀolyester film
90:
ꢀolyimide film
Fluxing: ꢀer ꢁIA RS-448-2 with flux touching
switch body.
Tape Seal Integrity: ꢀasses gross leak test
using 125°C flourinert for 20 seconds minimum.
Reference MIL-STD-202, Method 112.
Moisture Resistance: ꢀer MIL-STD-202,
Method 106.
Cleaning: 76, 78 and 90 series tape sealed
products: ꢀasses immersion test using water/
detergent. Acceptable solutions include 1-1-1
trichlorethane, freon, (TF, Tꢁ, 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.
Recommended Soldering Conditions:
Reflow Soldering
ꢀrofile:
(260°C
ꢀeak Temperature)
WAVꢁ SOLDꢁRIꢂG: 260°C maximum solder temperature for 5 seconds max.
** ꢂote: 100% matte tin terminal plating does not meet MIL-S-83504 for lead content.
DIꢀ
14
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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