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参数资料
| 型号： | 78B02S |
| 厂商： | GRAYHILL INC |
| 元件分类： | 开关 |
| 英文描述： | SLIDE DIP SWITCH-2SWITCHES, SPST, LATCHED,0.15A, 30VDC, THROUGH HOLE-STRAIGHT |
| 文件页数： | 2/2页 |
| 文件大小： | 46K |
| 代理商： | 78B02S |
Grayhill, Inc. 561 Hillgrove Avenue LaGrange, Illinois 60525-5997 USA Phone: 708-354-1040 Fax: 708-354-2820 www.grayhill.com
Thru-Hole DIP Switches
DIP
Switches
Ratings
76
78
90B
Mechanical Life: Operations per switch position
20,000
5,000
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:
10,000
—
10 mA, 30 Vdc; or 10 mA, 50 mVdc:
——
2,000
10 mA, 50 mVdc; or 25 mA, 24 Vdc; or 100 mA, 6 Vdc:
——
2,000
Contact Resistance: Initially:
≤ 30 m≤ 30 m≤ 20 m
After life, at 10 mA, 50 mVdc, open circuit:
≤ 100 m≤ 100 m≤ 100 m
Insulation Resistance:
Minimum, at 100 Vdc between adjacent closed
contacts and also across open switch contacts
Initially (Mohms):
5,000
After life (Mohms):
1,000
Dielectric Strength: Minimum voltage (AC,
RMS) measured between adjacent closed
contacts and also across open switch contacts.
lnitially:
750 V
500 V
After life:
500 V
Current Carry Rating: Maximum rise of 20°C
5 A4 A3 A
Switch Capacitance: At 1 megahertz
2 pF
Operating Temperature Range:
-40°C to + 85°C
Storage Temperature Range:
-55°C to + 85°C
SPECIFICATIONS: Standard and Military Qualified Styles
Mechanical Ratings
Vibration Resistance: Per Method 204, Test
Condition B, 1 mS opening (10 mS allowed)
Mechanical Shock: Per Method 213, Test
Condition A. 1 mS opening (10 mS allowed)
Thermal Shock Resistance: Per specification;
no failures; passes contact resistance.
Terminal Strength: Per specification
Thermal Aging: 1,000 hours at 85°C; no failures.
Environmental Ratings
Meets all requirements of MIL- S-83504. Where
Grayhill performance is superior, the MIL spec is
listed in parentheses.
Moisture Resistance: Per specification, Method
106.
Soldering Information
Series 90 MIDIP and Series 76 recessed rocker
(76RSB style) sealed switches have been tested
to EIA Standard RS-448-2. Similar performance
can be expected from other sealed Series 76 and
78 DIP switches.
Solderability: Per MIL-STD-202, Method 208
Resistance to Soldering Heat: 76RSB: Passes
EIA Standard using two, four, and six second
soldering time. 90: Per MIL-S-83504, six second
test.
Fluxing: Per EIA RS-448-2 with flux touching
switch body.
Cleaning: 76RSB, 90: 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.
Materials and Finishes
Shorting Member (Ball): Brass, gold-plated
10 microinches minimum over nickel barrier.
Base Contacts: Copper alloy, gold-plated
10 microinches minimum over nickel barrier.
Terminals:Copperalloy,solder-platedovernickel
barrier.
Non-ConductiveParts:Thermoplastic(UL94V-O)
Potting Material: Epoxy, 76,78 only.
Protective Cover: 76,78, only-Polycarbonate.
Tape and Reel Packaging
Tape Seal:
76, 78:
Polyester film
90:
Polyimide film or foil
Tape Seal Integrity: Passes gross leak test using
125°C flourinert for 20 seconds minimum.
Reference MIL-STD-202, Method 112.
B-16
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