Chip Resistor
Arrays
WNCR Series
Welwyn Components
Performance Data
Typical Performance
Short term overload
Resistance to solder heat
Temperature cycling
Moisture load life: 1000 hrs at 40°C
Load life: 1000 hrs at 70°C
Low temperature exposure: 1000 hrs at -55°C
High temperature exposure: 1000 hrs at 125°C
Humidity exposure: 1000 hrs at 40°C
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
2.5
2.0
2.0
3.0
3.0
3.0
3.0
3.0
Power Rating
For ambient temperature above 70°C, the power shall be derated as follows:
Percent of
Rated Wattage
(%)
Ambient Temperature (
o
C)
1/16 watt / resistor at 70
o
C
Packaging
Taping Characteristics (mm)
2.0
±
0.05
4.0
±
0.1
0
Ø1.5 +0.1
-
1.75
±
0.1
8.0
±
0.3
3.5
±
0.05
B
2.75
A
4.0
±
0.1
2.0
±
0.05
t
A
WNCR
2.0 +0.1
-0.15
t
0.8
±0.2
B
3.75 +0.1
-0.15
Packaging
Resistor arrays are supplied tape and reel.
Quantity 5,000 pcs per reel.
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
81
WELWYN [ WELWYN COMPONENTS LIMITED ]
