Features
Multiturn / Cermet / Sealed
s
Listed on the QPL for style RJ22 per
MIL-R-22097
s
Panel mount option available
(see page 73 for details)
s
3252/RJ22 - 1/2” Square Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
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
3252...........................1% or 2 ohms max.
(whichever is greater)
RJ22 ..........................2% or 2 ohms max.
(whichever is greater)
Adjustability
Voltage..........................................±0.01%
Resistance ....................................±0.05%
Resolution.........................................Infinite
Insulation Resistance ....................500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level ...................................1,000 vac
80,000 Feet...................................400 vac
Effective Travel......................25 turns nom.
Machine Screw Mounting
Torque...................................12 oz-in. max.
Marking
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
3252L/RJ22
2.36 TYP.
(.093)
13.21
(.520)
1.52
(.060)
12.70
(.500)
LENGTH
.89
TYP.
(.035)
152.4
MIN.
(6.00)
4.75
(.187)
1.52
(.060)
12.70
(.500)
How To Order
3252 L - 1 - 103 M
Model
Style
Standard or Modified
Product Indicator
-1 = Standard Product
Resistance Code
Optional Suffix Letter
M = Panel Mount (Factory Installed)
See page 81 for RJ22 ordering information.
Consult factory for other available options.
3252X/RJ22
2.54
(.100)
2
1 3
5.59
(.220)
2.54
(.100)
1.78
(.070)
6.35
(.250)
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)
Humidity
3252 ..............MIL-STD-202 Method 103;
96 hours (1%
∆TR;
100 Megohms IR)
RJ22................MIL-STD-202 Method 106
(1%
∆TR;
10 Megohms IR)
Vibration
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)
Rotational Life ............................200 cycles
3252 ..................(2%
∆TR;
3% or 3 ohms,
whichever is greater, CRV)
RJ22.............................................2%
∆TR
RED
YELLOW
CCW
12.7
TYP.
(.500)
ADJ. SLOT
2.03
±
.38
DIA.
(.080
±
.015)
.64
WIDE
X
(.025)
.50
DEEP
X
(.020)
12.7
TYP.
(.500)
.71
±
.08
(.028
±
.003) DIA. TYP.
1 3
2.54
(.100)
2
WIPER
3252P/RJ22
Common Dimensions
(Pin Styles)
1
CLOCKWISE
3
GREEN
CW
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
DIMENSIONS ARE:
METRIC
(INCHES)
13.21
TYP.
(.520)
1.98 DIA. THRU
(.078) (2 PLACES)
1.78
(.070)
5.59
(.220)
1.52
(.060)
TYP.
Standard Resistance Table
2.54
(.100)
2
13.34
±
.64
(.525
±
.025)
2.54
(.100)
2
6.35
(.250)
2.54
6.35
(.100) (.250)
3252W/RJ22
5.59
(.220)
Physical Characteristics
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
1 3
2.79
(.110)
2.54
(.100)
Resistance
(Ohms)
10
20
50
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
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
504
105
205
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.
Specifications are subject to change without notice.
17
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
