Features
■ Multiturn / Cermet / Sealed
■ Listed on the QPL for style RJ22 per
MIL-R-22097
■ Panel mount option available
(see page 73 for details)
3252/RJ22 - 1/2” Square Trimming Potentiometer
3252L/RJ 22
Electrical Characteristics
Machine Screw Mounting
Standard Resistance Range
Torque...................................12 oz-in. max.
Marking
2.36
TYP.
3252 ..............................10 to 2 megohms
RJ22................................10 to 1 megohm
(see standard resistance table)
Resistance Tolerance .................±10% std.
.......................(tighter tolerance available)
Absolute Minimum Resistance
3252...........................1% or 2 ohms max.
(whichever is greater)
RJ22 .......................................1 ohm max.
Contact Resistance Variation
(.093)
13.21
(.520)
3252 ................Manufacturer’s trademark,
resistance code, wiring diagram,
date code, manufacturer’s model
number and style
RJ22 .......................Mil-spec part number
Standard Packaging
X, P&W Styles .................25 pcs. per tube
L Style ..............................25 pcs. per bag
Adjustment Tool ..................................H-90
1.52
(.060)
12.70
(.500)
.89
(.035)
TYP.
152.4
(6.00)
LENGTH
MIN.
4.75
(.187)
12.70
(.500)
1.52
(.060)
3252...........................1% or 2 ohms max.
(whichever is greater)
RJ22 ..........................2% or 2 ohms max.
(whichever is greater)
Adjustability
How To Order
3252 L - 1 - 103 M
3252X/RJ 22
2.54
(.100)
5.59
(.220)
Voltage..........................................±0.01%
Resistance ....................................±0.05%
Resolution.........................................Infinite
Insulation Resistance ....................500 vdc.
1,000 megohms min.
Model
Style
1.78
(.070)
3
2.54
(.100)
1
2
Standard or Modified
Product Indicator
-1 = Standard Product
6.35
(.250)
Dielectric Strength
Resistance Code
Sea Level ...................................1,000 vac
80,000 Feet...................................400 vac
Effective Travel......................25 turns nom.
Optional Suffix Letter
M = Panel Mount (Factory Installed)
See page 81 for RJ22 ordering information.
Consult factory for other available options.
Environmental Characteristics
Power Rating @ 85°C (400 volts max.)
3252 ...........................................0.75 watt
RJ22 ...........................................0.50 watt
Power Rating @ 150°C......................0 watt
Temperature Range ..........-65°C to +150°C
Temperature Coefficient .........±100ppm/°C
Seal Test ............................85°C Fluorinert*
(pin styles only)
RED
WIPER
2
GREEN
CW
YELLOW
CCW
3
1
3252P/RJ 22
Common Dimensions
(Pin Styles)
CLOCKWISE
12.7
(.500)
TYP.
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
ADJ. SLOT
2.03 ± .38
(.080 ± .015)
Humidity
DIA.
METRIC
(INCHES)
DIMENSIONS ARE:
3252 ..............MIL-STD-202 Method 103;
96 hours (1% ∆TR; 100 Megohms IR)
RJ22 ................MIL-STD-202 Method 106
(1% ∆TR; 10 Megohms IR)
.64
(.025)
13.21
TYP.
WIDE
X
(.520)
.50
DEEP
(.020)
X
1.98
DIA. THRU
(.078)
12.7
(.500)
(2 PLACES)
Vibration
Standard Resistance Table
TYP.
3252 ....................30G (1% ∆TR; 1% ∆VR)
RJ22....................20G (1% ∆TR; 1% ∆VR)
Shock..................100G (1% ∆TR; 1% ∆VR)
Load Life
3252 .........1,000 hours 0.75 watt @ 85°C
(3% ∆TR; 3% or 3 ohms,
whichever is greater, CRV)
RJ22 ...........1,000 hours 0.5 watt @ 85°C
(2% ∆TR; 1% ∆VR)
1.78
(.070)
TYP.
Resistance
(Ohms)
Resistance
Code
2.54
(.100)
.71 ± .08
(.028 ± .003)
DIA. TYP.
5.59
(.220)
1
2.54
(.100)
3
10
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
504
105
205
20
50
1.52
(.060)
2
100
200
500
1,000
2,000
5,000
10,000
20,000
25,000
50,000
100,000
200,000
500,000
1,000,000
2,000,000
2.54
(.100)
6.35
(.250)
6.35
(.250)
Rotational Life ............................200 cycles
3252 ..................(2% ∆TR; 3% or 3 ohms,
whichever is greater, CRV)
13.34 ± .64
(.525 ± .025)
RJ22.............................................2% ∆TR
2.79
(.110)
2.54
(.100)
3252W/RJ 22
5.59
(.220)
Physical Characteristics
2.54
(.100)
3
1
2
Torque..................................5.0 oz-in. max.
Mechanical Stops......................Wiper idles
Terminals
3252 ..........Solderable printed circuit pins
RJ22 ...............MIL-STD-202; Method 208
Flexible leads ..........(7 strands of 30 AWG)
Weight ..........................................0.065 oz.
Wiper ...................................Set at CW end
Flammability...............................U.L. 94V-0
Popular values listed in boldface. Special
resistances available.
6.35
(.250)
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
17
Specifications are subject to change without notice.
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
