Features
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines, click here
■ Single Turn / Cermet / Industrial / Sealed
■ Available on tape and reel
■ Available with a knob for finger adjust
■ Available with extended shaft
■ Available with cross-slot rotor
■ Top and side adjust types (F, P, H, W, X
most popular)
3386 - 3/8 ” Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Product Dimensions
Common Dimensions
Common Dimensions
Standard Resistance Range
Side Adjust Models B,C,J,X
ADJ. SLOT
Side Adjust Models H,S,W
......................10 ohms to 2 megohms
(see standard resistance table)
Resistance Tolerance ........... 10 ꢀ std.
(tighter tolerance available)
ADJ. SLOT
.76
(.030)
.76
(.030)
WIDE
WIDE
9.53
(.375)
.76
(.030)
3.15
.76
(.030)
3.15
9.53
(.375)
X
X
DEEP
LONG
X
X
DEEP
LONG
Absolute Minimum Resistance
.......................................2 ohms max.
Contact Resistance Variation
(.124)
(.124)
9.53
(.375)
9.53
(.375)
.38
(.015)
.38
(.015)
MIN.
MIN.
........................... 2 ꢀ or 3 ohms max.
(whichever is greater)
5.33
(.210)
.51 ± .05
(.020 ± .002)
5.64
(.222)
.51 ± .05
(.020 ± .002)
Adjustability
Voltage Divider...................... 0.0ꢁ ꢀ
Rheostat................................ 0.1ꢁ ꢀ
Resolution ................................... Infinite
Insulation Resistance ...............ꢁ00 vdc.
1,000 megohms min.
5.97 ± .89
(.235 ± .035)
5.97 ± .89
(.235 ± .035)
DIA. PINS
DIA. PINS
4.83
(.190)
3386B
3386C
3386H
2.54
(.100)
2
3
2
1
Dielectric Strength
1
3
3.56 ± .25
(.140 ± .010)
Sea Level................................ 900 vac
70,000 Feet............................ 3ꢁ0 vac
Adjustment Angle................. 280 ° nom.
2.54
(.100)
1.40 ± .25
(.055 ± .010)
3.81
(.150)
3.81
(.150)
2.54
(.100)
Environmental Characteristics
Power Rating (300 volts max.)
1
2
3
3386S
3386W
3
2
1
8ꢁ °C......................................0.ꢁ watt
12ꢁ °C.......................................0 watt
Temperature Range...-ꢁꢁ °C to +12ꢁ °C
Temperature Coefficient ... 100 ppm/°C
Seal Test......................8ꢁ °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours
3.56 ± .25
(.140 ± .010)
2.44
(.096)
3.81
(.150)
3.81
2.54
(.100)
2.54
(.100)
(.150)
3
2
1
3386J
3386X
1
2
3
(2 ꢀ ΔTR, 10 Megohms min.)
2.44
(.096)
3.81
2.44
(.096)
2.54
(.100)
Vibration ....... 30 G (1 ꢀ ΔTR; 1 ꢀ ΔVR)
Shock ......... 100 G (1 ꢀ ΔTR; 1 ꢀ ΔVR)
Load Life..1,000 hours 0.ꢁ watt @ 70 °C
(3 ꢀ ΔTR; 3 ꢀ or 3 ohms,
(.150)
3.81
(.150)
2.54
(.100)
2.54
(.100)
2
whichever is greater, CRV)
3
1
Rotational Life .......................200 cycles
(4 ꢀ ΔTR; 3 ꢀ or 3 ohms,
MM
2.54
(.100)
1.40 ± .25
(.055 ± .010)
DIMENSIONS:
0.25
(INCHES)
whichever is greater, CRV)
2.54
(.100)
TOLERANCES:
EXCEPT WHERE NOTED
(.010)
Physical Characteristics
Standard Resistance Table
Mechanical Angle................. 310 ° nom.
Torque.............................ꢁ.0 oz-in. max.
Stop Strength ...............1ꢁ.0 oz -in. min.
Terminals .......................Solderable pins
Weight .......................................0.03 oz.
Marking...........................Manufacturer’s
trademark, resistance code,
How To Order
Resistance
Resistance
(Ohms)
Code
3386 P - 1 - 103 T __ LF
10
20
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
205
Model
Style
50
100
Standard or Modified
200
Product Indicator
500
-1 = Standard Product
-EYꢁ = Extended Shaft
1,000
wiring diagram, date code,
2,000
manufacturer’s model
5,000
Resistance Code
number and style
10,000
20,000
25,000
50,000
100,000
200,000
250,000
500,000
1,000,000
2,000,000
Optional Suffix Letter
Flammability ..........................U.L. 94V-0
Standard Packaging.....ꢁ0 pcs. per tube
Wiper ...............ꢁ0 ꢀ (Actual TR) 10 ꢀ
Adjustment Tool..............................H-90
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)
*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.
Specifications 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 specific applications.
Terminations
LF = 100 ꢀ Tin-plated (RoHS compliant)
Blank = 90 ꢀ Tin / 10 ꢀ Lead-plated
(Standard)
Popular distribution resistance values listed in
boldface. Special resistances available.
**Knob option is available only in standard tube
packaging.
Consult factory for other available options.
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