12 WATTS THRU 225 WATTS
ADJUSTABLE
AVT
AST
WIREWOUND RESISTORS
H.E.I. Adjustable Resistors are constructed with
steatite ceramic cores and terminated with welded terminals and wound with
the finest alloy resistance wires welded to the terminals. Our special formula
of vitreous enamel (AVT) or silicone (AST) coatings are then used to insu-
late the resistors. A section of the windings are made bare for connecting to
a band terminal that implements the adjustment function. This construction
insures long life, durability, and reliability.
A wide variety of special resistor core sizes are available. Any
tapped, combination fixed and adjustable can be made to custom
specifications, including tolerance, brackets, and terminals.
A
TYP
B
C
D
E
TYP
F
TYP
G
TYP
H
TYP
K
TYP
M
TYP
TYPE
WATT
N
+/-.032(0.8) +/-.032(0.8) +/-.032(0.8)
AVT-10
AVT-25
12
25
.31 (7.9) .19 (4.8) 1.75 (44.5) .19 (4.8) .44 (11.2) .10 (2.5) .50 (12.7) .10 (2.5) .94 (23.9) 2.19 (55.6)
.56 (14.2) .31 (7.9) 2.00 (50.8) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 1.69 (42.9) 2.75 (69.8)
6-32
8-32
AVT-25A
AVT-25B
AVT-50
AVT-50A
AVT-50B
AVT-75
AVT-75A
AVT-100
AVT-130
AVT-160
AVT-200
30
30
50
60
70
75
90
100
130
175
225
.75 (19) .50 (12.7) 2.00 (50.8) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 2.31 (58.7) 2.88 (73.2) 10-32
.63 (16) .45 (11.4) 2.00 (50.8) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 1.69 (42.9) 2.63 (66.8)
.56 (14.2) .31 (7.9) 4.00 (102) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 1.69 (42.9) 4.75 (121)
.75 (19) .50 (12.7) 4.00 (102) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 2.31 (58.7) 4.88 (124)
8-32
8-32
10-32
10-32
8-32
10-32
10-32
10-32
10-32
.75 (19)
.55 (14) 4.50 (114) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 2.31 (58.7) 5.38 (137)
.56 (14.2) .31 (7.9) 6.00 (152) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 1.69 (42.9) 6.75 (171)
.75 (19) .50 (12.7) 6.00 (152) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 2.31 (58.7) 6.88 (175)
.75 (19) .50 (12.7) 6.50 (165) .25 (6.4) .56 (14.2) .17 (4.3) .69 (17.5) .17 (4.3) 2.31 (58.7) 7.38 (187)
1.13 (28.7) .75 (19) 6.50 (165) .31 (7.9) .63 (16) .17 (4.3) .88 (22.4) .17 (4.3) 2.81 (71.4) 7.38 (187)
1.13 (28.7) .75 (19) 8.50 (216) .31 (7.9) .63 (16) .20 (5.1) .88 (22.4) .17 (4.3) 2.81 (71.4) 9.38 (238)
1.13 (28.7) .75 (19) 10.50 (267) .31 (7.9) .63 (16) .20 (5.1) .88 (22.4) .17 (4.3) 2.81 (71.4) 11.38 (289) 10-32
inches (mm)
AVT - VITREOUS
AST - SILICONE
RESISTANCE VALUE CHART
ORDER INFORMATION
.10 .75
.13 1.0
.15 1.5
.20 2.0
.25 3.0
.30 4.0
.33 5.0
.50 7.5
10
12
15
18
20
22
25
27
30
33
35
39
40
47
50
56
68
75
82
100
120
125
150
180
125
150
180
200
220
225
250
270
300
330
350
390
400
470
500
560
600
680
700
750
800
820
900
1.1K 3.0K 6.8K
1.2K 3.5K 7.5K
1.5K 3.9K 8.0K
1.8K 4.0K 8.2K
2.0K 4.7K 10.0K
2.2K 5.0K 12.5K
2.5K 5.6K 15.0K
AVTK - 10 - 250 - QC - BKTS
POWER
TYPE
RESISTANCE ADD FOR
ADD FOR
STANDARD
BRACKETS
V=VITREOUS INCLUDE FOR
QUICK
1.0K 2.7K 6.0K 20.0K
S=SILICON TOLERANCE(K= 10%)
CONNECT
OPTIONAL FEATURES AVAILABLE
WATTAGE DERATING CHART
FOR HIGHER AMBIENT TEMPERATURES
RESISTANCE TOLERANCE: Standard tolerance is 10%.
Available Tolerances: F = 1%, J = 5%, K = 10%
MOUNTING BRACKETS: Push-in friction grip mounting brackets are
available as shown above. When required, add “BKTS” to the part
number.
QUICK CONNECT TERMINALS: Resistors with a core O.D. of 9/16 or
3/4 inch can be supplied with Quick Connect Terminals except the
adjustable band. As “QC” to the part number as shown.
25 50 100
150
200
250 300
350
AMBIENT TEMP. CL
HUNTINGTON ELECTRIC, INC. 1 P.O. BOX 366 1 HUNTINGTON, IN 46750 1 (260) 356-0756 1 www.heiresistors.com