Document
Features
■ 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)
■ RoHS compliant* version available
■ For trimmer applications/processing guidelines, click here
3386 – 3/8 ˝ Square Trimpot® Trimming Potentiometer
Additional Information Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR LIBRARY
Electrical Characteristics
Product Dimensions
Common Dimensions Side Adjust Models B,C,J,X
ADJ. SLOT
.76 (.030)
WIDE
X
.76 (.030)
DEEP
X
3.15 (.124)
LONG
.38 (.015)
MIN.
9.53 (.375)
9.53 (.375)
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)
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
3386B 3386C 3386J
5.97 ± .89 (.235 ± .035)
3.56 ± .25 (.140 ± .010)
5.33
(.210)
.51 (.020
± ±
.05 .002)
DIA.
PINS
3 21
4.83 (.190)
3.81 (.150) 3.81 (.150)
3.56 ± .25 (.140 ± .010)
2.54 (.100)
321
3 21
2.54 (.100)
2.44 (.096)
3386X
2.54 (.100)
1.40 ± .25 (.055 ± .010) 2.54
(.100)
3.81 (.150) 3.81 (.150)
2
31
2.54 (.100)
Standard Resistance Table
Resistance
(Ohms)
10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 25,000 50,000 100,000 200,000 250,000 500,000 1,000,000 2,000,000
Resistance
Code
100 200 500 101 201 501 102 202 502 103 203 253 503 104 204 254 504 105 205
Popular distribution resistance values listed in boldface. Special resistances available.
Specifications are subject to change without notice. Users should verify actual device performan.