PRODUCT BULLETIN
WW-SERIES
FLAMEPROOF WIREWOUND RESISTORS
1 TO 10 WATT
0.1% THRU 10% TOLERANCE
SILICONE COATED
HIGH PURITY CERAMIC CORE
STAINLESS STEEL END CAPS
TINNED COPPER-CLAD STEEL LEADS
WELDED CONSTRUCTION
PACKAGED TAPE & REEL OR BULK
AVAILABLE IN NON-INDUCTIVE STYLE
MEETS REQUIREMENTS FOR MIL-R-26
1.375" Min.
WILLOW TECHNOLOGIES LTD.
SHAWLANDS COURT, NEWCHAPEL ROAD
LINGFIELD, SURREY, RH7 6BL, ENGLAND
Tel. + 44 (0) 1342 835234 Fax. + 44 (0) 1342 834306
E-mail
rob@willow.co.uk
Website
http://www.willow.co.uk
Specifications
PRP
Style
WW1/2
WW1
WW2
WW3
WW4
WW5
WW7
WW10
Wattage
U
.75
1.0
2.0
3.0
4.0
5.0
7.0
10.0
V
1.0
1.5
2.6
3.6
5.0
6.5
8.0
11.0
Resistance
Range
0.1
0.1
.02
.01
0.1
.01
0.1
0.1
to 5.23K
to 5.0K
to 7.2K
to 9.5K
to 14.0K
to 42.0K
to 63.0K
to 92.0K
Voltage
U
32
44
65
130
210
360
490
632
V
44
54
77
147
250
410
530
700
L
D
d
Dimensions
PRP
Style
WW1/2
WW1
WW2
WW3
WW4
WW5
WW7
WW10
DIMENSIONS Inches
L
.266 ± .015
.400 ± .030
.460 ± .030
.490 ± .030
.550 ± .030
.910 ± .030
1.250 ± .060
1.750 ± .060
Dimensional
Correlation
D
.095 ± .015
.100 ± .030
.175 ± .030
.210 ± .030
.220 ± .030
.295 ± .030
.295 ± .030
.295 ± .030
Lead Dia. (d)
.025 *
.025 *
.032
.032
.032
.032
.032
.032
in.
.015
.020
.025
.030
.032
.060
.095
.100
.175
.210
.220
.266
.295
.400
.460
.490
.550
.910
1.25
1.75
mm
0.38
0.5
0.64
0.76
0.81
1.52
2.41
2.54
4.45
5.33
5.59
6.76
7.49
10.2
11.7
12.4
14.0
23.1
31.8
44.5
* ALSO AVAILABLE IN .020
Temperature
TC20 = ±20PPM/°C, 10 ohm and above.
TC50 = ±50PPM/°C, 1 ohm - 9.9 ohm.
TC90 = ±90PPM/°C, below 1 ohm.
How to Order
Sample Part Number
WW1 TC20
7.5K
±1% S
Options
N = Non-Inductive
Resistance Tolerance
Resistance Value
Temperature Coefficient
Type
DEDICATION TO EXCELLENCE
Subject to change without notice
Continued on reverse side
S = Standard
WILLOW [ WILLOW TECHNOLOGIES LTD ]
