Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
81/82 - 5/8 ” Square Single-Turn Panel Control
85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
How To Order
8 5 A 2 A - B 2 8 - A 1 5 / R51 L
8 1 A 2 A - B 2 8 - A 1 5 / A15 L
ELEMENT TAPER RESISTANCE CODE
TYPE/TOLERANCE VALUE IN OHMS
(A) Linear Cermet ±10 % (05) - 100 (30) - 15 K
(H) Linear Cermet ±5 % (28) - 150 (16) - 20 K
(06) - 200 (17) - 25 K
(07) - 250 (18) - 50 K
(08) - 500 (19) - 75 K
(09) - 750 (20) - 100 K
(10) - 1 K (31) - 150 K
(29) - 1.5 K (21) - 200 K
(11) - 2 K (22) - 250 K
(12) - 2.5 K (23) - 500 K
(13) - 5 K (24) - 750 K
(14) - 7.5 K (25) - 1 M
(15) - 10 K
(B) Linear C-P ±20 % (10) - 1 K (18) - 50 K
(E) Linear C-P ±10 % (12) - 2.5 K (20) - 100 K
(13) - 5 K (22) - 250 K
(15) - 10 K (23) - 500 K
(16) - 20 K (25) - 1 M
(17) - 25 K
(C) CW Audio Cermet ±10 % (10) - 1 K (18) - 50 K
(D) CW Audio C-P ±20 % (12) - 2.5 K (20) - 100 K
(F) CCW Audio Cermet ±10 % (13) - 5 K (22) - 250 K
(G) CCW Audio C-P ±20 % (15) - 10 K (23) - 500 K
(S) CW Audio C-P ±10 % (17) - 25 K (25) - 1 M
(T) CCW Audio C-P ± 10 %
AVAILABLE ONLY IN
SHAFT TYPE
LENGTHS BUSHINGS
(CODE) (CODE)
A Single Plain 1/4 ” (6.35 mm) D 16,20,24,28 A, B, J
B Single Slotted 1/4 ” (6.35 mm) D 16,20,24,28 A, B, J
C Single Flatted 1/4 ” (6.35 mm) D 20,24,28 A, B, J
E Single Slotted 1/8 ” (3.18 mm) D 12,16,20,24,28 C, E, N
F Single Flatted 1/8 ” (3.18 mm) D 24 C, N
G Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1
K Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1
L Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1/2
M Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1
N Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1/2/3
P Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1/2
R Single Slotted 6 mm D 16,19,22,50 R, S
T Single Slotted 4 mm D 10, 13, 22 U
V Dual Concentric Plain 6 mm D - 3 mm D 30, 42 R
Outer Operates Section 1
A Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
B Locking 3/8 ” (9.53 mm) D x 1/2 ” (12.7 mm) L
C Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
E Locking 1/4 ” (6.35 mm) D x 1/2 ” (12.7 mm) L
J Plain 3/8 ” (9.53 mm) D x 1/4 ” (6.35 mm) L
N Plain 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
R Plain 10 mm D x 9 mm L
S Locking 10 mm D x 12.5 mm L
U Plain 7 mm D x 6 mm L
MODEL
81 Single-Turn, PC Pins
82 Single-Turn, J-Hooks
85 Single-Turn, Pot/Rotary Switch, PC Pins
86 Single-Turn, Pot/Rotary Switch, J-Hooks
SWITCH TYPE (MODELS 85 & 86 ONLY)
(R50) DPST N.O./N.C. CW Detent In-Line Term
(R51) DPST N.O./N.C. CCW Detent In-Line Term
(R52) DPST N.O./N.O. CW Detent In-Line Term
(R53) DPST N.O./N.O. CCW Detent In-Line Term
(R54) DPST N.C./N.C. CW Detent In-Line Term
(R55) DPST N.C./N.C. CCW Detent In-Line Term
(R56) DPST N.O./N.C. CW Detent Horz Term
(R57) DPST N.O./N.C. CCW Detent Horz Term
(R58) DPST N.O./N.O. CW Detent Horz Term
(R59) DPST N.O./N.O. CCW Detent Horz Term
(R60) DPST N.C./N.C. CW Detent Horz Term
(R61) DPST N.C./N.C. CCW Detent Horz Term
(R70) DPDT CW Detent In-Line Term
(R71) DPDT CCW Detent In-Line Term
(R72) DPDT CW Detent Horz Term
(R73) DPDT CCW Detent Horz Term
# SECTIONS APPLICABLE MODELS
1 Single 81,82
2 Double 81,82,85,86
3 Triple 81,82,85,86
4 Quad 81,82,85,86
BUSHING
A Single .305 R, 90 °CW
B Double .305 R, 90 ° & 270 °CW
C Single .305 R, 270 °CW
D No Lug
E Single .531 R, 90 °CW
F Single .305 R, 180 °CW
J Single .375 R, 90 °CW
K Double .375 R, 90 ° & 270 °CW
ANTI-ROTATION LUG
RoHS IDENTIFIER
Compliant
Non-Compliant
L
Blank
Models 81 & 82: Part number for multiple section
potentiometers must have a taper and resistance value for
each section.
Models 85 & 86: Part number must contain a switch type.
Boldface features are Bourns standard options.
All others are available with higher minimum order
quantities.
Non-Compliant versions are
available, but not recommended
for new designs.
SHAFT AVAILABLE
LENGTH ONLY IN
(FMS) BUSHING
Code Description Code
12 3/8 ” L C, N, J
16 1/2 ” L A, C, J, N
20 5/8 ” L A, B, C, E, J, N
24 3/4 ” L A, B, C, E, J, N
28 7/8 ” L A, B, C, E, J, N
32 1 ” L A, B, C, E, J, N
36 1-1/8 ” L A, B, C, E, J, N
40 1-1/4 ” L A, B, C, E, J, N
Metric
10 10 mmL U
13 13 mmL U
16 16 mmL R, S
19 19 mmL R, S
22 22 mmL R, S, U
30 30 mmL R, S
42 42 mmL R, S
50 50 mmL R, S
REV. 03/12
