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Specifications
Tolerance:
±10%
Temperature Coefficient:
±100ppm/℃
Power(Watts):
250mW
Number of Turns:
12
Resistance:
50kΩ
Mfr. Part #:
3266W-1-503LF
Package:
Through Hole-3P,6.4x4.3mm
Key Attributes
Model Number:
3266W-1-503LF
Product Description
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 applications requiring precise adjustment with infinite resolution and a reliable electrical and environmental performance.
Product Attributes
- Brand: Bourns
- Product Line: Trimpot
- Series: 3266
- Type: Trimming Potentiometer
- Actuator Type: Multiturn
- Element Type: Cermet
- Application: Industrial
- Sealing: Sealed
- Packaging: Tape and reel available, Standard Packaging: 50 pcs. per tube
- Compliance: RoHS compliant* version available
- Trademark: "Trimpot" is a trademark of Bourns, Inc.
- Registered Trademark: "Fluorinert" is a registered trademark of 3M Co.
Technical Specifications
| Specification | Value (Metric) | Value (Imperial) |
|---|---|---|
| Model | 3266 - 1/4 Square Trimpot Trimming Potentiometer | 3266 - 1/4 " Square Trimpot Trimming Potentiometer |
| Standard Resistance Range | 10 ohms to 1 megohm | 10 ohms to 1 megohm |
| Resistance Tolerance | 10 % std. | 10 % std. |
| Absolute Minimum Resistance | 1 % or 2 ohms max. (whichever is greater) | 1 % or 2 ohms max. (whichever is greater) |
| Contact Resistance Variation | 3.0 % or 3 ohms max. (whichever is greater) | 3.0 % or 3 ohms max. (whichever is greater) |
| Adjustability Voltage Divider | 0.02 % | 0.02 % |
| Adjustability Rheostat | 0.05 % | 0.05 % |
| Resolution | Infinite | Infinite |
| Insulation Resistance | 1,000 megohms min. at 500 vdc | 1,000 megohms min. at 500 vdc |
| Dielectric Strength Sea Level | 600 vac | 600 vac |
| Dielectric Strength 80,000 Feet | 250 vac | 250 vac |
| Effective Travel | 12 turns nom. | 12 turns nom. |
| Power Rating (300 volts max.) at 70 C | 0.25 watt | 0.25 watt |
| Power Rating (300 volts max.) at 150 C | 0 watt | 0 watt |
| Temperature Range | -55 C to +125 C | -55 C to +125 C |
| Temperature Coefficient | 100 ppm/C | 100 ppm/C |
| Seal Test | 85 C Fluorinert | 85 C Fluorinert |
| Humidity | MIL-STD-202 Method 103, 96 hours (2 % TR, 10 Megohms IR) | MIL-STD-202 Method 103, 96 hours (2 % TR, 10 Megohms IR) |
| Vibration | 30 G (1 % TR; 1 % VR) | 30 G (1 % TR; 1 % VR) |
| Shock | 100 G (1 % TR; 1 % VR) | 100 G (1 % TR; 1 % VR) |
| Load Life | 1,000 hours 0.25 watt 70 C (3 % TR; 3 % CRV) | 1,000 hours 0.25 watt 70 C (3 % TR; 3 % CRV) |
| Rotational Life | 200 cycles (4 % TR; 3 % or 3 ohms, whichever is greater, CRV) | 200 cycles (4 % TR; 3 % or 3 ohms, whichever is greater, CRV) |
| Torque | 3.0 oz-in. max. | 3.0 oz-in. max. |
| Mechanical Stops | Wiper idles | Wiper idles |
| Terminals | Solderable pins | Solderable pins |
| Weight | 0.015 oz. | 0.015 oz. |
| Marking | Manufacturers trademark, resistance code, wiring diagram, date code, manufacturers model number and style | Manufacturers trademark, resistance code, wiring diagram, date code, manufacturers model number and style |
| Wiper | 50 % (Actual TR) 10 % | 50 % (Actual TR) 10 % |
| Flammability | U.L. 94V-0 | U.L. 94V-0 |
| Adjustment Tool | H-90 | H-90 |
| Product Dimensions (Overall) | Refer to diagram | Refer to diagram |
| Pin Spacing | 2.54 mm (0.100 in.) | 2.54 mm (0.100 in.) |
| Termination Options | LF = 100 % Tin-plated (RoHS compliant), Blank = 90 % Tin / 10 % Lead-plated (Standard) | LF = 100 % Tin-plated (RoHS compliant), Blank = 90 % Tin / 10 % Lead-plated (Standard) |
| Packaging Designator | Blank = Tube (Standard), R = Tape and Reel (Z and Y Pin Styles Only), A = Ammo Pack (Z and Y Pin Styles Only) | Blank = Tube (Standard), R = Tape and Reel (Z and Y Pin Styles Only), A = Ammo Pack (Z and Y Pin Styles Only) |
Standard Resistance Table:
| Resistance (Ohms) | Resistance Code |
|---|---|
| 10 | 100 |
| 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 |
*RoHS Directive 2015/863, Mar. 31, 2015 and Annex
**Common dimensions
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
2409302333_BOURNS-3266W-1-503LF_C780226.pdf
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