Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com

Ratings

76

78

90B

Mechanical Life: Operations per switch position

2,000

2,000

2,000

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:

2,000

2,000

—

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 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

5,000

5,000

After life (Mohms):

1,000

1,000

1,000

Dielectric Strength: Minimum voltage (AC,

RMS) measured between adjacent closed

contacts and also across open switch contacts.

lnitially:

750 V

750 V

500 V

After life:

500 V

500 V

500 V

Current Carry Rating: Maximum rise of 20°C

5 A

4 A

3 A

Switch Capacitance: At 1 megahertz

2 pF

2 pF

2 pF

Operating Temperature Range:

-40°C to + 85°C

-40°C to + 85°C

-40°C to + 85°C

Storage Temperature Range:

-55°C to + 85°C

-55°C to + 85°C

-55°C to + 85°C

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.

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.

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:

Polyester film

90:

Polyimide film

Tape Seal Integrity: Passes gross leak test

using 125°C flourinert for 20 seconds minimum.

Reference MIL-STD-202, Method 112.

MAX 260

°

255

°

230

°

150

°

Room

Temperature

120-150 sec.

60 sec.

5-10 sec.

REFLOW TEMPERATURE PROFILE:

Reflow

Soldering

Profile:

(260°C

Peak

Temperature)

Recommended Soldering Conditions:

WAVE SOLDERING: 260°C maximum solder temperature for 5 seconds max.

DIP

14

Thru-Hole DIP Switches