Product Overview
The Bourns 3266 Series 1/4" Square Trimpot Trimming Potentiometer is a multiturn, cermet, industrial, and sealed potentiometer designed for trimmer applications. It features standoffs for thorough PC board washing and offers tape and reel packaging options. A RoHS compliant version is available. This potentiometer is suitable for various industrial applications requiring precise adjustment.
Product Attributes
- Brand: Bourns
- Model Series: 3266
- Type: Trimming Potentiometer
- Actuator Type: Multiturn
- Element Type: Cermet
- Application: Industrial
- Sealing: Sealed
- Packaging: Tape and Reel available
- Compliance: RoHS compliant version available
- Trademark: "Trimpot" is a trademark of Bourns, Inc.
- Trademark: "Fluorinert" is a registered trademark of 3M Co.
Technical Specifications
| Specification | Value |
|---|---|
| Model | 3266 - 1/4 Square Trimpot Trimming Potentiometer |
| Standard Resistance Range | 10 ohms to 1 megohm |
| Resistance Tolerance | 10 % std. |
| Absolute Minimum Resistance | 1 % or 2 ohms max. (whichever is greater) |
| Contact Resistance Variation | 3.0 % or 3 ohms max. (whichever is greater) |
| Adjustability Voltage Divider | 0.02 % |
| Adjustability Rheostat | 0.05 % |
| Resolution | Infinite |
| Insulation Resistance | 500 vdc. 1,000 megohms min. |
| Dielectric Strength Sea Level | 600 vac |
| Dielectric Strength 80,000 Feet | 250 vac |
| Effective Travel | 12 turns nom. |
| Power Rating (300 volts max.) at 70 C | 0.25 watt |
| Power Rating (300 volts max.) at 150 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 % TR, 10 Megohms IR) |
| Vibration | 30 G (1 % TR; 1 % VR) |
| Shock | 100 G (1 % TR; 1 % VR) |
| Load Life (1,000 hours at 0.25 watt, 70 C) | (3 % TR; 3 % CRV) |
| Rotational Life | 200 cycles (4 % TR; 3 % or 3 ohms, whichever is greater, CRV) |
| Torque | 3.0 oz-in. max. |
| Mechanical Stops | Wiper idles |
| Terminals | Solderable pins |
| Weight | 0.015 oz. |
| Marking | Manufacturers trademark, resistance code, wiring diagram, date code, manufacturers model number and style |
| Wiper | 50 % (Actual TR) 10 % |
| Flammability | U.L. 94V-0 |
| Standard Packaging | 50 pcs. per tube |
| Adjustment Tool | H-90 |
| Dimensions (in mm and inches) | See diagram in source document. Common dimensions are 0.25 mm (.010) except where noted. |
| Terminations (Standard) | 90 % Tin / 10 % Lead-plated |
| Terminations (RoHS compliant) | LF = 100 % Tin-plated |
| Packaging Designator (Tube) | Blank |
| Packaging Designator (Tape and Reel) | R (Z and Y Pin Styles Only) |
| Packaging Designator (Ammo Pack) | A (Z and Y Pin Styles Only) |
| Standard Resistance Table Codes | 10 (10 ), 101 (100 ), 201 (200 ), 501 (500 ), 102 (1,000 ), 202 (2,000 ), 502 (5,000 ), 103 (10,000 ), 203 (20,000 ), 253 (25,000 ), 503 (50,000 ), 104 (100,000 ), 204 (200,000 ), 254 (250,000 ), 504 (500,000 ), 105 (1,000,000 ) |
| Tape and reel material | Meets Antistatic ANSI/ESD 5541-2003 packaging standards. |
Note: Specifications are subject to change without notice. Users should verify actual device performance in their specific applications.
Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar. 31, 2015 and Annex
2409302333_BOURNS-3266W-1-104LF_C780232.pdf
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