Features
RoHS compliant*
Conductive plastic or cermet
Linear and audio tapers
PC board and bushing mount
Gangable
Metal bushing and shaft
Sealed for board washing
51/53 - Sealed 1/2 ” (12.5 mm) Square Control
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
Electrical Characteristics1 Conductive Plastic Cermet
Standard Resistance Range
Linear ...................................................................................................1 K ohms to 1 megohm ......................... 150 ohms to 1 megohm
Audio ....................................................................................................1 K ohms to 1 megohm ......................... 1 K ohms to 1 megohm
Total Resistance Tolerance
Linear Tapers ........................................................................................±10 % or ±20 % .................................... ±10 % or ±5 %
Audio Tapers ........................................................................................±10 % or ±20 % .................................... ±10 %
Independent Linearity .................................................................................±5 % ...................................................... ±5 %
Absolute Minimum Resistance ...................................................................2 ohms maximum .................................. 2 ohms maximum
Eff ective Electrical Angle ............................................................................270 ° ±5 ° .............................................. 270 ° ±5 °
Contact Resistance Variation .....................................................................2 % ........................................................ 2 %
Dielectric Withstanding Voltage (MIL-STD-202 – Method 301)
Sea Level ..............................................................................................1,500 VAC minimum .............................. 1,500 VAC minimum
70,000 ..................................................................................................500 VAC minimum ................................. 500 VAC minimum
Insulation Resistance .................................................................................1,000 megohms minimum ..................... 1,000 megohms minimum
Power Rating At 70 °C (Derate To 0 At 125 °C)
(Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)
Linear Tapers ........................................................................................0.5 watt .................................................. 1.0 watt
Audio Tapers ........................................................................................0.25 watt ................................................ 0.5 watt
Theoretical Resolution ................................................................................Essentially infi nite .................................. Essentially infi nite
Environmental Characteristics1
Operating Temperature Range ...................................................................+1 °C to +125 °C ................................... +1 °C to +125 °C
Storage Temperature Range ......................................................................-55 °C to +125 °C .................................. -55 °C to +125 °C
Temperature Coeffi cient Over Storage Temperature Range ......................±1,000 ppm/°C ...................................... ±150 ppm/°C
Vibration (Single Section) ...........................................................................15 G ....................................................... 15 G
Total Resistance Shift ...........................................................................±2 % maximum ..................................... ±2 % maximum
Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum
Shock (Single Section) ...............................................................................30 G ....................................................... 30 G
Total Resistance Shift ...........................................................................+2 % maximum ..................................... ±2 % maximum
Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum
Load Life .....................................................................................................1,000 hours ........................................... 1,000 hours
Total Resistance Shift ...........................................................................±10 % TRS maximum ........................... ±5 % TRS maximum
Rotational Life (No Load) ............................................................................50,000 cycles ........................................ 25,000 cycles
Total Resistance Shift ...........................................................................±10 % TRS maximum ........................... ±10 % TRS maximum
Contact Resistance Variation @ 25,000 Cycles ...................................±2 % ...................................................... ±4 %
Moisture Resistance (MIL-STD-202, Method 103, Condition B)
Total Resistance Shift ...........................................................................±10 % TRS ............................................ ±5 % TRS
IP Rating
Entire Unit .............................................................................................IP64 ....................................................... IP64
Shaft/Bushing.......................................................................................IP65 ....................................................... IP65
Mechanical Characteristics
Stop Strength ............................................................................................................................................................................................... 56 N-cm (5 lb.-in.)
Mechanical Angle ...................................................................................................................................................................................................... 290 ° ±5 °
Torque
Starting (Dual Sections) .............................................................................................................................................. +0.35 N-cm (+0.5 oz.-in.) maximum
Running (Single Section) ............................................................................................................................................. 0.15 to 1.4 N-cm (0.2 to 2.0 oz.-in.)
Running (Dual Section) ................................................................................................................................................0.35 to 1.8 N-cm (0.5 to 2.5 oz.-in.)
Detent (Single Section) ...................................................................................................................................................1.94 N-cm (2.75 oz.-in.) minimum
Mounting (Torque on Bushing) .......................................................................................................................... 1.7 to 2.0 N-m (15 to 18 lb.-in.) maximum
Weight (Single Section).............................................................................................................................................................................................. 5.5 grams
(Additional Section) ............................................................................................................................................................................................. 3.0 grams
Terminals ................................................................................................................................................................................................... PC pin or solder lug
Soldering Condition .................................................................. Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter.
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean fl ux.
Part can be wave soldered at 260 °C (500 °F) for 5 seconds, no wash process with no clean fl ux.
Marking .................................................................................................................. Manufacturer’s trademark, part number, resistance value and date code.
Ganging (Multiple Section Potentiometer) ............................................................................................................................................ 2 sections maximum**
Hardware ...........................................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number.
1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
** Additional sections available on special request with higher minimum order quantities.
*RoHS COMPLIANT
321
(SINGLE AND DUAL MODULE SHOWN)
PACKAGE DIMENSIONS PCB MOUNTING BRACKET
PACKAGE DIMENSIONS
MODEL 51
SOLDER LUG TERMINALS
MODEL 53
ELECTRICAL SCHEMATIC
13CW
CCW
2
ANTI-ROTATION LUG
(Style "A" Shown)
0.41
(.016)
FOR TOLERANCES SHOWN: .XX = ± (.010)
.XXX = ±
(.005)
SHAFT DIMENSIONS ±
(1/32)
5.70
(.224)
SHAFT FLAT
ORIENTATION
SUGGESTED PANEL LAYOUT
16.51 ± 0.25
(.650 ± .010)
8.89 ± 0.18
(.350 ± .007)
.64
( .025)
"L"
0.30
(.0118)
5.08 ± 0.30
(.200 ± .012)
7.62 ± 0.30
(.300 ± .012)
12.5
(.492)
11.00
(.432) DIA.
0.74
(.029)
6.25
(.246)
7.00
(.275)
6.60 ±0.38
(.260 ± .015)
.66 ± .05
(.026 ± .002)
3 X
2.54
(.100)
2.54
(.100)
.64
( .025)
"L"
5.08 ± 0.30
(.200 ± .012)
0.91 ± .051
(.036 ± .002)
6.35 ± .25
(.250 ± .010)
7.62 ± 0.30
(.300 ± .012)
1.32 ± 0.25
(.052 ± .010)
12.5
(.492)
11.00
(.432) DIA.
0.74
(.029)
6.25
(.246)
7.00
(.275)
.41 ± .05
( .016 ± .002)
2 X
2 X
5.08
(.200)
2.54
(.100)
5.08
(.200)
2.40
(.094)
0.90
(.036)
4.70
(.185)
2 X
1.80
(.071)
5.0 ± 0.51
(.197 ± .020)
0.80 ± 0.30
(.031 ± .012) 1.52
(.060)
.25
.13
.80
(.100) TERMINAL SPACING
2.54
6.60 ±0.38
(.260 ± .015)
(DOUBLE MODULE FRONT AND REAR BRACKET SHOWN)
1.32
(.052)
FMS
C
LOF POT
2.54
(.100)
TYP.
1.27
(.050)
DIA.
4 PLCS.
1.02
(.040)
DIA.
6 PLCS.
6.35
(.250)
7.62
(.300) 5.08
(.200)
132 ° ± 5 °
CCW END BUSHING DIAMETER
TOLERANCE
+0.25
( +.010)
DIA.
2.26
(.089)
6.20
(.244)
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
51/53 - Sealed 1/2 ” (12.5 mm) Square Control
Product Dimensions
DIMENSIONS: MM
(INCHES)
OPT.
3/8-32UNEF-2A
1/4-32UNEF-2A
3/8-32UNEF-2A
M6 X .075-6g
M7 X .075-6g
M10 X 0.75-6g
9.53
(.375) 1.60 ± 0.25
(.063 ± .010)
OPT.
1.194 ± 0.10
(.047 ± .004)
SHAFT
6.35
(.250) BUSHING
9.53
(.375)
OPT.
6.35
(.250) 0.79 ± 0.25
(.031 ± .010)
OPT.
0.79 ± 0.10
(.031 ± .004)
SHAFT
3.18
(.125) BUSHING
6.35
(.250)
OPT.
9.53
(.375) 1.52 ± 0.25
(.060 ± .010)
OPT.
5.49 ± 0.10
(.216 ± .005)
SHAFT
6.35
(.250) BUSHING
9.53
(.375)
MAX. FLAT LENGTH 15.88
(.625)
8.0
(.315) 1.52 ± 0.25
(.060 ± .010)
0.79 ± 0.10
(.031 ± .004)
SHAFT
3.0
(.118) BUSHING
6.0
(2.36)
8.0
(.315) 1.52 ± 0.25
(.060 ± .010)
0.79 ± 0.10
(.031 ± .004)
SHAFT
4.0
(.157) BUSHING
7.0
(2.75)
9.5
(.374) 1.80 ± 0.25
(.071 ± .010)
1.00 ± 0.10
(.039 ± .004)
SHAFT
6.0
(.236) BUSHING
10.0
(.394)
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
51/53 - Sealed 1/2 ” (12.5 mm) Square Control
Shaft/Bushing Styles
STD. LENGTH ‘L
.500 (12.7)
.625 (15.88)
.750 (19.05)
.875 (22.23)
1.000 (25.4)
A Style Bushing
STD. LENGTH ‘L
.375 (9.53)
.500 (12.7)
.625 (15.88)
.750 (19.05)
.875 (22.23)
1.000 (25.4)
C Style Bushing
STD. LENGTH ‘L
.625 (15.88)
.750 (19.05)
.875 (22.23)
1.000 (25.4)
A Style Bushing -
Flatted Shaft
STD. LENGTH ‘L
.630 (16.0)
.866 (22.0)
.984 (25.0)
S Style Bushing
STD. LENGTH ‘L
.630 (16.0)
.866 (22.0)
.984 (25.0)
U Style Bushing
STD. LENGTH ‘L
.630 (16.0)
.866 (22.0)
.984 (25.0)
R Style Bushing
DIMENSIONS: MM
(INCHES)
How To Order
51 A A D - B 28 - A 15
Part number for multiple
section potentiometers
must have a taper
and resistance value
for each section.
SHAFT AVAILABLE
LENGTH ONLY IN
(FMS) BUSHING
Code Description Code
12 3/8 C
16 1/2 ” A, C
20 5/8 ” A, C
24 3/4 ” A, C
28 7/8 ” A, C
32 1 ” A, C
Metric
16 16 mm R, S, U
22 22 mm R, S, U
25 25 mm R, S, U
ELEMENT TAPER RESISTANCE
TYPE/TOLERANCE (CODE)
Code Description VALUE IN OHMS
(A) Linear Cermet ±10 % (28) — 150 (14) — 7.5 K
(H) Linear Cermet ±5 % (06) — 200 (15) — 10 K
(07) — 250 (30) — 15 K
(08) — 500 (16) — 20 K
(09) — 750 (17) — 25 K
(10) — 1 K (18) — 50 K
(29) — 1.5 K (19) — 75 K
(11) — 2 K (20) — 100 K
(12) — 2.5 K (23) — 500 K
(13) — 5 K (25) — 1 M
(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) — 1 K (18) — 50 K
±10 % (12) — 2.5 K (20) — 100 K
(F) CCW Audio Cermet (13) — 5 K (23) — 500 K
±10 % (15) — 10 K (25) — 1 M
(17) — 25 K
(D) CW Audio C-P ±20 % (10) — 1 K (18) — 50 K
(S) CW Audio C-P ±10 % (12) — 2.5 K (20) — 100 K
(13) — 5 K (22) — 250 K
(15) — 10 K (23) — 500 K
(17) — 25 K (25) — 1 M
(G) CCW Audio C-P (10) — 1 K (18) — 50 K
±20 % (12) — 2.5 K (20) — 100 K
(T) CCW Audio C-P (13) — 5 K (22) — 250 K
±10 % (15) — 10 K (23) — 500 K
(17) — 25 K (25) — 1 M
(Y) CW Dual Audio (10) — 1 K (18) — 50 K
Taper C-P ±20 % (12) — 2.5 K (20) — 100 K
(13) — 5 K (22) — 250 K
(15) — 10 K (23) — 500 K
(17) — 25 K (25) — 1 M
MODEL
Code
51
53
Description
PC Pins (.100 ” centers)
Solder Lugs
BUSHING CONFIGURATION
Code
A
C
R
S
U
Description
3/8 ” D x 3/8 ” L
1/4 ” D x 1/4 ” L
10 mm D x 9.5 mm L
6 mm D x 8 mm L
7 mm D x 8 mm L
MOUNTING BRACKET/
ANTI-ROTATION LUG
Code
A
D
L
M
N
Description
AR Lug 90 °CW
No AR Lug or Bracket
Front Bracket
Rear Bracket
Front and Rear Bracket
# SECTIONS/DETENTS
Code
A
B
E
F
Description
Single No Detent
Double No Detent
Single w/Center Detent
Double w/Center Detent
Boldface features are Bourns standard options. All others are available with higher
minimum order quantities.
AVAILABLE ONLY IN
SHAFT TYPE BUSHINGS LENGTHS
Code Description Code Description
B Single Slotted 1/4 ”D A 24,28
C Single Flatted 1/4 ”D A 20,24,28,32
E Single Slotted 1/8 ”D C 12,16,20,24,28
R Single Slotted 6 mmD R 16,22,25
T Single Slotted 4 mmD U 16,22,25
U Single Slotted 3 mmD S 16,22,25
/ A15 L
RoHS IDENTIFIER
CompliantL
REV. 12/14
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bourns:
53CAD-E12-A10 53RAA-R16-D18 53CAD-E12-A13 53CAD-E12-A15 51RAD-R22-B18 51RAD-R22-B16 51RAD-
R22-B12 51RAD-R22-B10 51RAD-R22-B15 51RAD-R22-B13 53AEA-B28-A20 51RAD-R22-B25 51RAD-R22-B22
53AEA-C28-A20 51RAD-R22-B20 53RAA-R25-B15 51RAA-R25-D20 53AEA-B28-A16 53AEA-C28-A16 53AEA-
C28-A11 53AEA-B28-A15 53AEA-C28-A13 53AEA-B28-A13 53AEA-B28-A10 53AEA-C28-A15 53AEA-B28-A11
53AEA-C28-A10 53AEA-B28-A18 53AEA-C28-A18 51AAN-B16-B15 53CAD-D14-E25 53CAD-E28-D15 51RAD-
R25-D15 51UAD-T25-B15 51SAN-U13-A15 51AAN-B28-B18 51SAN-U16-A10 51AAA-B24-A20 51AAA-C24-A20
53CAD-D20-D10 53CAD-D20-D13 51CAD-E28-D15 53CAD-E20-D15 51SAN-U16-A15 53UAD-T13-S15 51AAD-
B28-D13 51CAD-E20-D15 51AAD-C28-D13 51AAD-B28-D15 51CAD-D20-D15 51CED-E28-C15 53AAD-C28-A22
51CAL-E20-C15 51FAD-E28-A13 53CAA-D20-E17 53AAA-C28-E13 51AFD-B24-E15 51AAL-C20-A13 51CAN-E28-
A18 51AAD-B24-B15 51AAL-C20-A15 51CAN-E28-A13 51CAN-E28-A15 51AAD-B24-B18 51CAN-D28-A15
51AAL-C20-A10 51CAL-E28-A10 53UAD-T22-B20 53UAD-T22-B22 51AAN-B24-A15 53UAD-T22-A15 51AAD-C20-
H15 53UAD-T22-A13 51AAN-B28-T13 51CAN-E20-T17 53CAD-E16-B20 53AAC-B24-A20 51UAD-T22-A20
53UAD-T16-A15 53CAD-E20-B20 51CAN-D20-D13 51CAN-D20-D15 51AAN-B28-D15 51CAN-D20-D10 51CAN-
D20-D17 51SAD-U25-A18 51SAD-U25-A13 51SAD-U25-A10 51SAD-U25-A15 51UAD-T16-G18 51AEA-B28-B20
51AEA-C28-B18 51AEA-B28-B16 51AEA-B28-B10 51AEA-B28-B18 51AEA-C28-B20 51AEA-C28-B10 51AEA-B28-
B13 51AEA-B28-B11 51AEA-C28-B13