USR UNR
600
4-3425 4-3825 4-3825H
TEMPERATURE COEFFICIENT
+5 ppm/K
400-5 ppm/K
dR/R (ppm )
200
0
+2,2 ppm/K
-200
-400
-600
-50
-25
0
25
50
75
Tem perature (°C)
-1,8 ppm/K
No minal-dR/R
No minal-Spread
+/-2,3 ppm/K
No minal-Spread
+/-2,3 ppm/K
100
125
DERATING CURVE
Power ( % from
nominal power)
120
100
80
60
40
20
0
25
50
85
100
115
130
145
155
Temperature of the backplate (°C)
DIMENSIONS
USR/UNR 4-3425
USR/UNR 4-3825 and 4-3825H
Dimensions in mm
HOW TO ORDER
UNR 4-3425 1R0 D 0.1% TK1
USR 4-3825 10R D 0.5% TK3
Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK
Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail
sales@willow.co.uk
web
www.willow.co.uk
WILLOW [ WILLOW TECHNOLOGIES LTD ]
