Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
How to Order 90 Series Panel Controls
9 9 A 2 A - B 2 8 - A 1 5 / R51 L
9 1 A 2 A - A 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)
B Plastic Single Slotted 1/4 " (6.35 mm) D 16,20,24,28 A,D
C Plastic Single Flatted 1/4" (6.35 mm) D 24,28 A,D
D Plastic Single Plain 1/8" (3.18 mm) D 16,20,24 C
R Plastic Single Slotted 6 mm D Metric 16,19,22 R
T Plastic Single Slotted 4 mm D Metric 16,19,22 U
W Plastic Single Knurled 1/4" (6.35 mm) D 32 A,D
A Metal Single Plain 1/4" (6.35 mm) D 16,20,24,28,32 A
G Metal Single Slotted 1/4" (6.35 mm) D 16,20,24,28,32 A
H Metal Single Flatted 1/4" (6.35 mm) D 16,20,24,28,32 A
J Metal Single Slotted 6 mm D Metric 12,16,19,22 R
V Metal Single Slotted 4 mm D Metric 12,16,19,22 U
Y Metal Single Knurled 1/4" (6.35 mm) D 24 A
A Metal Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
C Metal Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
D Plastic Unthreaded 3/8 ” (9.53 mm) D
x 3/8 ” (9.53 mm) L
R Metal Plain 10 mm D x 9 mm L
U Metal Plain 7 mm D x 9 mm L
MODEL
91 Single-Turn, In-Line PC Pins
92 Single-Turn, In-Line J-Hooks
93 Single-Turn, L-Pattern PC Pins
94 Single-Turn, L-Pattern J-Hooks
95 Single-Turn, Triangle-Pattern Solder Lugs
96 Single-Turn, In-Line PC Pins, Sealed*
97 Single-Turn, L-Pattern PC Pins w/Switch
99 Single-Turn, Triangle-Pattern
Solder Lugs w/Switch
*Model 96 is not available in multi-gang versions.
SWITCH TYPE (MODELS 97 & 99 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 Models 91 Thru 96 Only
2 Dual All Models, 2nd Section is
a Switch in Model 99
BUSHING
A Single .305 ” (7.8 mm) R,
90 °CW
C Single .305 ” (7.8 mm) R,
270 °CW
D No Lug
ANTI-ROTATION LUG
RoHS IDENTIFIER
Compliant
Non-Compliant
L
Blank
Models 91 - 96: Part number for multiple section
potentiometers must have a taper and resistance value for
each section.
Models 97 & 99: Part number must contain a switch type.
Boldface features are Bourns standard options.
All others are available with higher minimum order
quantities.
SHAFT AVAILABLE
LENGTH ONLY IN
(FMS) BUSHING
Code Description Code
16 1/2 ”L A, C, D
20 5/8 ”L A, C, D
24 3/4 ”L A, C, D
28 7/8 ”L A, D
32 1 ”L A, D
METRIC
12 12 mmL U
16 16 mmL R, U
19 19 mmL R
22 22 mmL R, U
REV. 02/10
