Tubular Vitreous Enamelled
Wirewound Resistors
1600/1900 Series
Welwyn Components
Physical Data
Table 2 Dimensions in millimetres. See fig 2-8 for styles
A
Type
1601
1905
1600
1602
1906
1603
1604
1605
1908
1607
1606
1608
1609
max
33.0
56.1
61.5
51.0
64.3
74.5
102
89.5
102
102
166
152
216
B
max
17.5
14.5
14.5
17.5
17.5
17.5
17.5
24.0
24.0
32.0
24.0
32.0
32.0
C
max
8.2
6.55
6.55
8.2
8.2
8.2
8.2
13.2
13.2
19.2
13.2
19.2
19.2
D
nom
4.5
4.5
4.5
4.5
4.5
4.5
4.5
5.7
5.7
7.0
5.7
7.0
7.0
E
max
5.0
5.0
5.0
5.0
5.0
5.0
5.0
6.8
6.8
9.8
6.8
9.8
9.8
F
max
19.5
17.5
17.5
19.5
19.5
19.5
19.5
26.5
26.5
32.0
26.5
32.0
32.0
G
nom
15
10
10
15
15
15
15
17
17
22
17
22
22
H
±.25
3.0
3.0
3.0
3.0
3.0
3.0
3.0
4.0
4.0
6.4
4.0
6.4
6.4
M3
M3
M3
M3
M3
M3
M3
M4
M4
M6
M4
M6
M6
J
K
max
59
-
-
77
90
101
128
122
134
134
198
184
248
Terminations
Styles B, 4B, AP and AW are available in all 13 tube sizes.
Styles C, CB and CP are available in sizes 1601 to 1609
inclusive, 1906 and 1908
Lugs (Figure 2): Pb free solder coated nickel iron. Denoted
by prefix B to size reference, thus B1602
Pigtails (Figure 3): 14/.193 mm copper, 150 mm minimum
length. Denoted by prefix AP, thus AP1602
Rigid wires (Figure 4): 1.2 mm diameter tinned copper, 32
mm minimum length.
Denoted by prefix AW, thus: AW1602
Lugs with screws, nuts and washers (Figure 5): Nickel
plated brass screws and nuts. Denoted by prefix 4B,
thus: 4B1602.
Ferrule, electrically isolated (Figure 6) Connection to
resistor via Pb free solder coated nickle iron lugs. Denoted
by prefix CB, thus: CB1602.
Ferrule, electrically live (Figure 7) Nickel plated brass.
Denoted by prefix C, thus: C1602.
Ferrule, electrically isolated (Figure 8): Connection to
resistor via pigtails of 14/.193 mm copper, 150mm
minimum length. Denoted by prefix CP thus: CP1602
Marking The resistors are legend marked with type
reference, resistance value, tolerance and manufacturing
date code. Value marking conforms to IEC 62.
Solvent resistance: The vitreous coating and marking are
resistant to all accepted industrial cleaning fluids.
© 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 E · 10.05
123
WELWYN [ WELWYN COMPONENTS LIMITED ]
