78B04T Grayhill Inc, 78B04T Datasheet - Page 2

• Manufacturer Part Number: 78B04T
• Description: SWITCH DIP EXTENDED UNSEAL 4POS
• Manufacturer: Grayhill Inc
• Series: 78r
• Type: Slider

Specifications of 78B04T

• Circuit: SPST
• Number Of Positions: 4
• Contact Rating @ Voltage: 0.15A @ 30VDC
• Actuator Type: Standard
• Actuator Level: Raised
• Mounting Type: Through Hole
• Orientation: Top Actuated
• Washable: No
• Contact Configuration: SPCO
• No. Of Switch Positions: 4
• Actuator Style: Raised Slide
• Pitch Spacing: 2.54mm
• Contact Current Dc Max: 150mA
• Circuitry: SPST-CO
• Contact Current Max: 150mA
• Brand/series: 78 Series
• Contact Form: SPST
• Current, Rating: 150 mA
• Dielectric Strength: 750 V
• Number Of Poles: 1
• Termination: Through Hole
• Voltage, Rating: 30 VDC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: GH7185

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com
SPECIFICATIONS: Standard 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 MIL-STD-202,
Method 106.
WAVE SOLDERING: 260°C maximum solder temperature for 5 seconds max.
Ratings
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:
10 mA, 50 mVdc; or 25 mA, 24 Vdc; or 100 mA, 6 Vdc:
Contact Resistance: Initially:
After life, at 10 mA, 50 mVdc, open circuit:
Insulation Resistance:
Minimum, at 100 Vdc between adjacent closed
contacts and also across open switch contacts
Dielectric Strength: Minimum voltage (AC,
RMS) measured between adjacent closed
contacts and also across open switch contacts.
Current Carry Rating: Maximum rise of 20°C
Switch Capacitance: At 1 megahertz
Operating Temperature Range:
Storage Temperature Range:
Initially (Mohms):
After life (Mohms):
lnitially:
After life:
Reflow
Soldering
Profile:
(260°C
Peak
Temperature)
Temperature
MAX 260°
Room
255°
230°
150°
Recommended Soldering Conditions:
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: 76, 78 and 90 series 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.
REFLOW TEMPERATURE PROFILE:
120-150 sec.
-40°C to + 85°C
-55°C to + 85°C
≤ 100 mΩ
≤ 30 mΩ
750 V
500 V
2,000
2,000
5,000
1,000
2 pF
5 A
76
—
—
5-10 sec.
-40°C to + 85°C
-55°C to + 85°C
60 sec.
Thru-Hole DIP Switches
≤ 100 mΩ
≤ 30 mΩ
750 V
500 V
2,000
2,000
5,000
1,000
2 pF
4 A
78
—
—
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)
Potting Material: Epoxy, 76,78 only.
Protective Cover: 76,78, only-Polycarbonate.
Tape Seal:
76, 78:
90:
Tape Seal Integrity: Passes gross leak test
using 125°C flourinert for 20 seconds minimum.
Reference MIL-STD-202, Method 112.
-40°C to + 85°C
-55°C to + 85°C
Polyester film
Polyimide film
≤ 100 mΩ
≤ 20 mΩ
500 V
500 V
2,000
2,000
2,000
5,000
1,000
90B
2 pF
3 A
—
DIP
14