
VERSIONS
*RoHS COMPLIANT
AVAILABLE
Features
■ Single Turn / Cermet / Industrial / Sealed
■ Available on tape and reel
■ Available with a knob for fi nger adjust
■ Available with extended shaft
■ Available with cross-slot rotor
■ Top and side adjust types (F, P, H, W, X
most popular)
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines,
click here
3386 - 3/8 ” Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
......................10 ohms to 2 megohms
(see standard resistance table)
Resistance Tolerance ...........±10 % std.
(tighter tolerance available)
Absolute Minimum Resistance
....................................... 2 ohms max.
Contact Resistance Variation
........................... 2 % or 3 ohms max.
Product Dimensions
Common Dimensions
Side Adjust Models B,C,J,X
ADJ. SLOT
.76
WIDE
(.030)
.76
X
DEEP
(.030)
3.15
X
LONG
(.124)
.38
(.015)
MIN.
(whichever is greater)
Adjustability
Voltage Divider ...................... ±0.05 %
Rheostat ................................ ±0.15 %
5.97 ± .89
(.235 ± .035)
Resolution ................................... Infi nite
Insulation Resistance ...............500 vdc.
3386B
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet ............................ 350 vac
3.56 ± .25
(.140 ± .010)
Adjustment Angle ................. 280 ° nom.
Environmental Characteristics
Power Rating (300 volts max.)
85 °C ...................................... 0.5 watt
125 °C ....................................... 0 watt
Temperature Range ... -55 °C to +125 °C
Temperature Coeffi cient ...±100 ppm/°C
3386C
3.56 ± .25
(.140 ± .010)
2.54
(.100)
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours
(2 % ΔTR, 10 Megohms min.)
Vibration ....... 30 G (1 % ΔTR; 1 % ΔVR)
3386J
2.44
(.096)
Shock ......... 100 G (1 % ΔTR; 1 % ΔVR)
Load Life .. 1,000 hours 0.5 watt @ 70 °C
(3 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
3386X
2.54
(.100)
Rotational Life .......................200 cycles
(4 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
1.40 ± .25
(.055 ± .010)
2.54
(.100)
Physical Characteristics
Mechanical Angle ................. 310 ° nom.
Torque ............................. 5.0 oz-in. max.
Stop Strength ............... 15.0 oz -in. min.
Terminals .......................Solderable pins
Weight .......................................0.03 oz.
Marking ........................... Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model
number and style
Flammability ..........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Wiper ............... 50 % (Actual TR) ±10 %
Adjustment Tool ..............................H-90
*RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
†“Fluorinert” is a registered trademark of 3M Co.
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.
Standard Resistance Table
Resistance Resistance
(Ohms) Code
10 100
20 200
50 500
100 101
200 201
500 501
1,000 102
2,000 202
5,000 502
10,000 103
20,000 203
25,000 253
50,000 503
100,000 104
200,000 204
250,000 254
500,000 504
1,000,000 105
2,000,000 205
Popular distribution resistance values listed in
boldface. Special resistances available.
9.53
(.375)
.51 ± .05
(.020 ± .002)
132
132
(.150)
2
31
(.375)
5.33
(.210)
132
3.81
(.150)
3.81
2.54
(.100)
9.53
(.150)
2.54
(.100)
3.81
(.150)
DIA. PINS
4.83
(.190)
3.81
Common Dimensions
Side Adjust Models H,S,W
ADJ. SLOT
.76
WIDE
(.030)
.76
X
DEEP
(.030)
3.15
X
LONG
(.124)
.38
(.015)
5.97 ± .89
(.235 ± .035)
MIN.
3386H
1.40 ± .25
(.055 ± .010)
3386S
3386W
2.44
(.096)
DIMENSIONS:
(INCHES)
TOLERANCES: ±
(.010)
0.25
2.54
(.100)
2.44
(.096)
MM
9.53
(.375)
9.53
(.375)
5.64
(.222)
.51 ± .05
2
312
(.100)
312
2.54
(.100)
2.54
3.81
(.150)
2.54
(.100)
DIA. PINS
2.54
(.100)
3.81
(.150)
(.020 ± .002)
13
EXCEPT WHERE NOTED
How To Order
3386 P - 1 - 103 T __ LF
Model
Style
Standard or Modifi ed
Product Indicator
-1 = Standard Product
-EY5 = Extended Shaft
Resistance Code
Optional Suffi x Letter
T = Knob**
Packaging Designator
Blank = Tube (Standard)
R = Tape & Reel (W and U Pin Styles Only)
A = Ammo Pack (W and U Pin Styles Only)
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
**Knob option is available only in standard tube
packaging. Not recommended for side load
applications.
Consult factory for other available options.

3386 - 3/8 ” Square Trimpot® Trimming Potentiometer
Product Dimensions
Common Dimensions
Top Adjust Models F,G,K,P,R,U,V,Y
ADJ. SLOT
.76
WIDE
(.030)
.76
XXDEEP
(.030)
3.15
(.124)
(.375)
3386F
5.08
(.200)
LONG
9.53
2.54
(.100)
9.53
(.375)
5.64
(.222)
31
2.34 ± .38
(.092 ± .015)
2.54
(.100)
2
3386G
ADJ. SLOT
.76
WIDE
(.030)
.97
XXDEEP
(.038)
3.05
LONG
(.120)
COMMON TO
3386V
2
1
3
2.54
(.100)
2.54
(.100)
3.56 ± 0.25
(.140 ± .010)
3386K
2.54 ± .25
2.54
(.100)
1.22 ± .25
2 PLCS.
2
31
90° ± 3°
3
2
231
(.100)
1
(.100)
2.54
(.150)
2.54
3.81
(.150)
3.81
(.120 ± .015)
3386P
4.78 ± .38
(.188 ± .015)
3386R
(.100 ± .010)
3.05 ± .38
(.048 ± .010)
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
4.83
(.190)
.38
(.015)
5.97 ± .89
(.235 ± .035)
.51 ± .05
(.020 ± .002)
MIN.
10.16
(0.40)
3386U
3386V
3.56 ± .25
(.140 ± .010)
3386Y
Common Dimensions
Top Adjust Models M,T
ADJ. SLOT
.76
WIDE
(.030)
.76
XXDEEP
(.030)
3.15
LONG
(.124)
9.53
(.375)
3386M
3386T
3.81
(.150)
2.54
(.100)
2.54
(.100)
9.53
(.375)
5.33
(.210)
2.54
(.100)
321
2.54
(.100)
1.40
(.055)
5.64
(.222)
2
31
3.05 ± .38
(.120 ± .015)
213
123
2.54
(.100)
4.78 ± .38
(.188 ± .015)
312
2.54
(.100)
2.54
(.100)
2.54
(.100)
5.08
(.200)
5.97 ± .89
(.235 ± .035)
4.83
(.190)
.51 ± .05
(.020 ± .002)
.38
MIN.
(.015)
3.81
(.150)
.76 ± .38
(.030 ± .015)
2.54
(.100)
Users should verify actual device performance in their specifi c applications.
3386H-EY5
3386X-EY5 – SHOWN
ADJ. SLOT
.81
WIDE
(.032)
2.54
X
DEEP
(.100)
3.56
X
LONG
(.140)
3.56
2.54
(.100)
1.40
(.055)
2.54
(.100)
3386P-EY5
4.78
(.188)
2.54
(.100)
The Model 3386 is available with a knob for finger
adjustment. Add suffix letter "T" to order code for
F, P and X terminal styles.
5.59
(.220)
4.83
(.190)
10.41 ± .51
(.410 ± .020)
CCW
1
CLOCKWISE
DIMENSIONS:
(INCHES)
TOLERANCES: ±
(.010)
0.25
(.140)
2
31
2.54
(.100)
3.56
(.140)
7.87
(.310)
2.54
(.100)
2.54
(.100)
1
3
2
8.38
X
(.330)
X
6.60
(.260)
WIPER
2
3
MM
EXCEPT WHERE NOTED
7.87
(.310)
ADJ. SLOT
5.59
(.220)
1.02
(.040)
1.40
(.055)
CW
LONG
WIDE
DEEP
Specifi cations are subject to change without notice.