Tubular Vitreous Enamelled
Wirewound Resistors
1600/1900 Series
Welwyn Components
Physical Data
Table 2 Dimensions in millimetres. See fig 2-8 for styles
A
B
C
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
F
G
nom
15
10
10
15
15
15
15
17
17
22
17
22
22
H
J
K
Type
max
33.0
56.1
61.5
51.0
64.3
74.5
102
89.5
102
102
166
152
216
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
max
8.2
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
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
.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
max
59
1601
1905
1600
1602
1906
1603
1604
1605
1908
1607
1606
1608
1609
M3
M3
M3
M3
M3
M3
M3
M4
M4
M6
M4
M6
M6
6.55
6.55
8.2
-
-
77
8.2
90
8.2
101
128
122
134
134
198
184
248
8.2
13.2
13.2
19.2
13.2
19.2
19.2
Terminations
Styles B, 4B, AP and AW are available in all 13 tube sizes.
Ferrule, electrically isolated (Figure 6) Connection to
resistor via Pb free solder coated nickle iron lugs. Denoted
by prefix CB, thus: CB1602.
Styles C, CB and CP are available in sizes 1601 to 1609
inclusive, 1906 and 1908
Ferrule, electrically live (Figure 7) Nickel plated brass.
Denoted by prefix C, thus: C1602.
Lugs (Figure 2): Pb free solder coated nickel iron. Denoted
by prefix B to size reference, thus B1602
Ferrule, electrically isolated (Figure 8): Connection to
resistor via pigtails of 14/.193 mm copper, 150mm
minimum length. Denoted by prefix CP thus: CP1602
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.
Marking The resistors are legend marked with type
reference, resistance value, tolerance and manufacturing
date code. Value marking conforms to IEC 62.
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.
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
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