Chip Resistor

Arrays

WNCR Series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

81

Issue B · 03.02

Welwyn Components

Performance Data

Typical Performance

Short term overload

∆R%

2.5

Resistance to solder heat

∆R%

2.0

Temperature cycling

∆R%

2.0

Moisture load life: 1000 hrs at 40°C

∆R%

3.0

Load life: 1000 hrs at 70°C

∆R%

3.0

Low temperature exposure: 1000 hrs at -55°C

∆R%

3.0

High temperature exposure: 1000 hrs at 125°C

∆R%

3.0

Humidity exposure: 1000 hrs at 40°C

∆R%

3.0

Power Rating

For ambient temperature above 70°C, the power shall be derated as follows:

Percent of

Rated Wattage

(%)

t

A

B

2.0

± 0.05

2.0

± 0.05

1.75

± 0.1

2.75

4.0

± 0.1

4.0

± 0.1

Ø 1.5

+0.1

-0

3.5

± 0.05

Packaging

Taping Characteristics (mm)

Packaging

Resistor arrays are supplied tape and reel.

Quantity 5,000 pcs per reel.

At

B

WNCR

2.0 +0.1

0.8

3.75 +0.1

-0.15

±0.2

-0.15