RA
Vishay Sfernice
Adjustable Wirewound Enamelled Resistors
FEATURES
• 21 W to 180 W at 25 °C
• NF C 93-214
- RBA 13 x 70
- RBA 20 x 117
- RBA 25 x 168
”B” Ring
• Compliant to RoHS directive 2002/95/EC
The ceramic tubular core ensures high dissipation capacity and excellent resistance to thermal shock and overload. The resistor
winding is evenly coiled on the core and protected by an enamel coating. A longitudinal opening provides for one or more
electrical connections by means of sliding collars equipped with a tongued connector.
DIMENSIONS in millimeters
WELDED STAINLESS STEEL 304 L BAND “B”
A
WELDED STAINLESS STEEL 304 L COLLAR “AN” TYPE ꢁ
M
K
Ø S
Ø 4.ꢀ
F
Ø C
R
V
Z
D
O
X
Ø B
Ø B
E
Ø C
T
A
SCREWED STAINLESSSTEEL304 L “CS” TYPE ꢁ
A
P
H
Ø B
ꢀ6
Q
L
N
ꢁ5
U
N - 0
- 4
RA
Ø B
Ø C
E + 0.5 F + 0.5
H
J
L - 0
- 4
M
CONNECTION
A
ꢀ
D
K MAX.
SERIES
ꢁ3 x 70
MAX.
MIN.
+ 0
7
+ 0
10.5
12
ꢁ
MAX.
AN-B (1)
AN-B
70
94
16
19.5
23
5
9
16 0.5
17.5 0.5
21 0.7
-
-
19.5
23
24
29.5
31.5
34
-
56
2
2
2
-
ꢁ6 x 94
8
-
78
98
-
ꢀ0 x ꢁꢁ7
ꢀ5 x ꢁ38
ꢀ5 x ꢁ68
30 x ꢀ50
AN-B
117
138
168
250
9
8
14
-
25
-
-
AN-B-CS
AN-B-CS
AN-B-CS
28
12
12
17
23.5
23.5
26
1
1
8
15
27
27
30
27.5
27.5
30
199
229
117
147
2
169
199
287
28
8
15
34
2
33
1
8
18
36.5
317 227 2.5
RA
SERIES
O
MAX.
P
ꢁ.5
Q
0.5
AVERAGE UNIT
WEIGHT IN g
CONNECTION
R
S
T
U
V
X
Z
AN-B (1)
AN-B
3.5
5
ꢁ3 x 70
ꢁ6 x 94
24.5
28
-
-
-
-
24 0.5
26.5 0.5
31 0.7
4.2
4.2
4.2
5.7
5.7
5.7
6.35
6.35
6.35
9
-
-
20 0.5 34.5
21 0.5 38
24 0.7 42
1
40
1
70
ꢀ0 x ꢁꢁ7
ꢀ5 x ꢁ38
ꢀ5 x ꢁ68
30 x ꢀ50
AN-B
33
-
-
-
1
116
200
225
415
6
AN-B-CS
AN-B-CS
AN-B-CS
38.5
38.5
43.5
50
50
60
24
24
25
33.5
33.5
36
1
1
6.5
6.5
9
28
28
33
1
1
1
51 1.5
51 1.5
55 1.5
6
9
6
1
13
5
Note
(1) Also with CS and CR collars; see RW datasheet
www.vishay.com
118
For technical questions, contact: sfer@vishay.com
Document Number: 50019
Revision: 16-Feb-10