78HJ02GWT中文资料
Grayhill, Inc. ? 561 Hillgrove Avenue ? LaGrange, Illinois 60525-5997 ? USA ? Phone: 708-354-1040 ? Fax: 708-354-2820 ? https://www.wendangku.net/doc/431685029.html, SERIES 78H SPDT and DPST FEATURES
?Compatible with SMT Assembly Including Infrared Reflow and Vapor-Phase ?Reliable Spring and Ball Contact SPECIFICATIONS Electrical Ratings Make-and-break Current Rating: 2,000operations per switch position at 1 mA, 5 Vdc;50 mA, 30 Vdc; or 150 mA, 30 Vdc Contact Resistance: Initial: 30 mohms max.After Life: 100 mohms max. (10 mA at 50 Vdc,open circuit)
Insulation Resistance: Minimum, at 100 Vdc between adjacent closed contacts and also across open switch contacts. Initial: 2,000Mohms; After Life: 1,000 Mohms Dielectric Strength: Minimum voltage (AC,RMS) measured between adjacent closed contacts and also across open switch contacts.Initial: 750 volts; After Life: 500 volts Current Carry Rating: 4 amps, maximum rise of 20°C
Switch Capacitance: 2 pF at 1megahertz Mechanical Ratings Mechanical Life: 2,000 operations per switch position
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)
Terminal Strength: Per specification Thermal Aging: 1,000 hours at 85°C; no failures Thermal Shock: Per specification; no failures;passes contact resistance
Environmental Ratings Meets all requirements of MIL- S-83504. Where Grayhill performance is superior, the MIL spec is
listed in parentheses.Operating Temperature Range: -40°C to +85°C Storage Temperature Range: -55°C to + 85°C Moisture Resistance: Per MIL-STD-202,Method 106Soldering Information Solderability: Per MIL-STD-202, Method 208Soldering Heat Resistance: Per MIL-S-83504,six second test Recommended Processing Temperature:220°C–230°C (1 pass—260°C maximum)
Processing Position: Switch is to be processed with all actuators in the closed (on) position as shipped.Materials and Finishes
Shorting Member: 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: Cover is natural color
thermoplastic, actuators are white thermoplastic
(UL94V-O)
No. of Length Length Carrier Width Part Number*Positions (inches)(metric)Dim. A SPDT DPST 10.280" 7,1 mm 24 mm 78HJ01GWT 78HF01GWT 20.480"12,2 mm 24 mm 78HJ02GWT 78HF02GWT 30.680"17,3 mm 32 mm 78HJ03GWT 78HF03GWT 40.880"22,4 mm 44 mm 78HJ04GWT 78HF04GWT 5 1.080"27,4 mm 44 mm 78HJ05GWT 78HF05GWT * Insert "R" before the "T" in the Grayhill part number for tape and reel packaging (500 switches/reel).ORDERING INFORMATION: Tube Packaging Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
DIMENSIONS In inches (and millimeters)
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