Features
n Single Turn / Cermet / Industrial / Sealed
n RoHS compliant* version available
n Available on tape and reel
n For trimmer applications/processing
guidelines, click here
n Available with a knob for finger adjust
n Available with extended shaft
n Available with cross-slot rotor
n Top and side adjust types (F, P, H, W, X
most popular)
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.
(whichever is greater)
Adjustability
Voltage Divider....................... ±0.05 %
Rheostat................................. ±0.15 %
Resolution.................................... Infinite
Insulation Resistance................ 500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet............................. 350 vac
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 Coefficient.... ±100 ppm/°C
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)
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)
Rotational Life........................200 cycles
(4 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
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
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
3386 - 3/8 ˝ Square Trimpot® Trimming Potentiometer
Product Dimensions
Common Dimensions
Side Adjust Models B,C,J,X
Common Dimensions
Side Adjust Models H,S,W
ADJ. SLOT
.76
WIDE
(.030)
X .76
DEEP
(.030)
3.15
X
LONG
(.124)
.38
MIN.
(.015)
ADJ. SLOT
.76
WIDE
(.030)
X .76
DEEP
(.030)
3.15
X
LONG
(.124)
.38
MIN.
(.015)
9.53
(.375)
9.53
(.375)
5.33
(.210)
.51 ± .05 DIA. PINS
(.020 ± .002)
5.97 ± .89
(.235 ± .035)
4.83
(.190)
3386B
3
2
2
3
2
2
3
2.54
(.100)
2.54
(.100)
2
3
2.54
(.100)
2.54
(.100)
1.40 ± .25
(.055 ± .010)
3386S
1
2
2.44
(.096)
3386W
1
3.81
(.150)
3.81
(.150)
2.54
(.100)
1.40 ± .25
(.055 ± .010)
3386H
2.54
(.100)
2.44
(.096)
3386X
5.97 ± .89
(.235 ± .035)
3
1
3.56 ± .25
(.140 ± .010)
2.54
(.100)
3386J
5.64
(.222)
.51 ± .05 DIA. PINS
(.020 ± .002)
1
3.81
(.150)
3.81
(.150)
3
9.53
(.375)
1
3.56 ± .25
(.140 ± .010)
3386C
9.53
(.375)
1
2.54
(.100)
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.
*RoHS Directive 2015/863, Mar. 31, 2015 and Annex
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
3.81
(.150)
3.81
(.150)
1
2.44
(.096)
2
3
2.54
(.100)
2.54
(.100)
MM
DIMENSIONS:
(INCHES)
0.25
TOLERANCES: ±
EXCEPT WHERE NOTED
(.010)
How To Order
3386 P - 1 - 103 T __ LF
Model
Style
Standard or Modified
Product Indicator
-1 = Standard Product
-EY5 = Extended Shaft
Resistance Code
Optional Suffix 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)
Tape and reel material meets Antistatic ANSI/
ESD 5541-2003 packaging standards.
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.
†“Fluorinert” is a registered trademark of 3M Co.
“Trimpot” is a trademark of Bourns, Inc.
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)
X .76 DEEP
(.030)
X 3.15 LONG
(.124)
3386U
9.53
(.375)
2.54
(.100)
2.54
(.100)
5.97 ± .89
(.235 ± .035)
3 2 1
4.83
(.190)
9.53
(.375)
.51 ± .05
(.020 ± .002)
3386F
3
5.08
(.200)
3386Y
1
2
1
2
2.54
(.100)
2.54
(.100)
5.64
(.222)
2.54
(.100)
3.56
(.140)
2.54
(.100)
2
3
1.40
(.055)
1
7.87
(.310)
2.54
(.100)
2.54
(.100)
3386P-EY5
2.54
(.100)
2.34 ± .38
(.092 ± .015)
ADJ. SLOT
.81
WIDE
(.032)
2.54
X
DEEP
(.100)
X 3.56 LONG
(.140)
3
1.40
(.055)
3.56 ± .25
(.140 ± .010)
2.54
(.100)
2.54
(.100)
4.78 ± .38
(.188 ± .015)
2.54
(.100)
3386V
.38
MIN.
(.015)
5.64
(.222)
3386H-EY5
3386X-EY5 – SHOWN
3.56
(.140)
2
3386G
ADJ. SLOT
.76
WIDE
(.030)
X .97 DEEP
(.038)
X 3.05 LONG
(.120)
COMMON TO
3386V
3
1
3
2.54
(.100)
2.54
(.100)
3386K
2.54 ± .25 2 PLCS.
(.100 ± .010)
3.05 ± .38
(.120 ± .015)
10.16
(0.40)
ADJ. SLOT
.76
WIDE
(.030)
X .76 DEEP
(.030)
X 3.15 LONG
(.124)
2
5.97 ± .89
(.235 ± .035)
9.53
(.375)
4.83
(.190)
3386P
2.54
(.100)
2.54
(.100)
4.78 ± .38
(.188 ± .015)
3
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.
.38
MIN.
(.015)
5.59
(.220)
8.38
(.330)
4.83
(.190)
1
2
3.81
(.150)
3.81
(.150)
2
3386T
CCW
ADJ. SLOT
5.59 LONG
(.220)
1.02
WIDE
X
(.040)
1.40
DEEP
X
(.055)
6.60
(.260)
10.41 ± .51
(.410 ± .020)
3
1
2
2.54
(.100)
1
2
.51 ± .05
(.020 ± .002)
3386M
90° ± 3°
2.54
(.100)
3
5.33
(.210)
1
2.54
(.100)
2.54
(.100)
4.78
(.188)
Common Dimensions
Top Adjust Models M,T
9.53
(.375)
3
7.87
(.310)
5.08
(.200)
3.05 ± .38
(.120 ± .015)
3.56 ± 0.25
(.140 ± .010)
2
1
WIPER
3
1
CW
CLOCKWISE
3.81
(.150)
3.81
(.150)
3386R
1.22 ± .25
(.048 ± .010)
3
1 2 3
2.54
(.100)
.76 ± .38
(.030 ± .015)
2.54
(.100)
MM
DIMENSIONS:
(INCHES)
0.25
TOLERANCES: ±
EXCEPT WHERE NOTED
(.010)
2 1
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
3.81 ± .71
(.15 ± .028)
2
1
3
8.89 + .76 /- .50
(.350 + .030/ - .020)
4.0 ± 0.3
(.157 ± .012)
DIA.
18 + 1.0/ - 0.5
(.709 + .040/ - .020)
12.70 + .30/ - 0.25
(.500 + .012/ - .010)
4.83 ± .25
(.190 ± .010)
2.44 ± .25
(.096 ± .010)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
®
MM
DIMENSIONS:
(INCHES)
3386 - 3/8 ˝ Square Trimpot Trimming Potentiometer
.51 ± .05
(.020 ± .002)
DIA. TYP.
1000/REEL/BOX
Packaging Specifications
SIDE ADJUST
3386W-1
TOP ADJUST
3386U-1
27.56 ± .76
(1.085 ± .030)
22.98 ± .076
(.905 ± .030)
12.70
REF.
(.500)
18 ± .76
(.709 ± .030)
3.81 ± .71
(.15 ± .028)
2
1
10.16 MIN.
(.400)
12.70 REF.
(.500) 18.03 ± 0.7
(.710 ± .030)
3
1
3
8.89 + .76 /- .50
(.350 + .030/ - .020)
4.0 ± 0.3
(.157 ± .012)
DIA.
18 + 1.0/ - 0.5
(.709 + .040/ - .020)
8.89 ± 0.7
(.350 ± .028)
3.99 ± 0.3
DIA.
(.157 ± .012)
18.03 ± 1.5
(.710 ± .060)
3.81 ± 0.3
(.150 ±.028)
12.7 ± 0.3
(.500 ± .012)
12.70 + .30/ - 0.25
(.500 + .012/ - .010)
4.83 ± .25
(.190 ± .010)
9.53
(.375)
4.78
(.188)
2.44 ± .25
(.096 ± .010)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
.51 ± .05
(.020 ± .002)
DIA. TYP.
1000/REEL/BOX
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
1000/REEL/BOX
TOP ADJUST
3386U-1
22.98 ± .076
(.905 ± .030)
Meets EIA Specification 468.
8.89 ± 0.7
(.350 ± .028)
10.16 MIN.
(.400)
18.03 ± 1.5
(.710 ± .060)
3.81 ± 0.3
(.150 ±.028)
12.70 REF. DIMENSIONS:
(.500) 18.03 ± 0.7
(.710 ± .030)
3
MM
(INCHES)
1
3.99 ± 0.3
DIA.
(.157 ± .012)
12.7 ± 0.3
(.500 ± .012)
9.53
(.375)
4.78
Asia-Pacific: Tel: +886-2
2562-4117 • Email: asiacus@bourns.com
(.188)
Europe: Tel: +36
88 885 877 • Email: eurocus@bourns.com
2.54
ALL PINS IN-LINE ON CENTER
(.100)
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
MM
DIMENSIONS:
(INCHES)
www.bourns.com
1000/REEL/BOX
REV. 08/19
“Trimpot” is a registered trademark of Bourns, Inc.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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