Precision Potentiometer - 3680 Family
Product Overview
The 3680 Family of precision potentiometers offers repeatable settings and high resolution, with options for digital display for excellent readability. Designed for snap-in panel mounting, these RoHS compliant potentiometers are suitable for applications requiring precise control and reliable performance. They feature a robust construction and are engineered for demanding environments.
Product Attributes
- Brand: Bourns
- Series: 3680 Family
- Compliance: RoHS Compliant
Technical Specifications
| Specification | Details | |||||
|---|---|---|---|---|---|---|
| Standard Resistance Range | 10 ohms to 1 megohm | |||||
| Total Resistance Tolerance | 3 % | |||||
| Dielectric Withstanding Voltage (Sea Level) | 1,000 VAC minimum | |||||
| Power Rating (+25 C) | 2 watts | |||||
| Power Rating (+85 C) | 0 watt | |||||
| Insulation Resistance (500 VDC) | 1,000 megohms minimum | |||||
| Resolution (3681) | 10 % | |||||
| Resolution (3682) | 1 % | |||||
| Resolution (3683) | 0.1 % | |||||
| Resolution (3684) | 0.01 % | |||||
| Resolution (3685) | 0.001 % | |||||
| Absolute Minimum Resistance | 3 ohms or 0.2 % maximum (whichever is greater) | |||||
| Accuracy (Dial Reading to Output Ratio) | 1.0 % full scale | |||||
| Operating Temperature Range | -25 C to +85 C | |||||
| Storage Temperature Range | -25 C to +85 C | |||||
| Temperature Coefficient (Over Storage Temp Range) | 100 ppm/C maximum | |||||
| Vibration | 10 G | |||||
| Wiper Bounce (Vibration) | 0.1 millisecond maximum | |||||
| Total Resistance Shift (Vibration) | 1 % maximum | |||||
| Voltage Ratio Shift (Vibration) | 0.2 % maximum | |||||
| Shock | 50 G | |||||
| Wiper Bounce (Shock) | 0.1 millisecond maximum | |||||
| Total Resistance Shift (Shock) | 1 % maximum | |||||
| Voltage Ratio Shift (Shock) | 0.2 % maximum | |||||
| Load Life | 1,000 hours, 2 watts | |||||
| Total Resistance Shift (Load Life) | 2 % maximum | |||||
| Rotational Life | 75,000 button operations each decade | |||||
| Total Resistance Shift (Rotational Life) | 2 % maximum | |||||
| IP Rating | IP 40 | |||||
| Terminals | 2.79 mm (0.11 in.) wide x .41 mm (.016 in.) thick | |||||
| Soldering Condition (Manual) | 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean | |||||
| Soldering Condition (Wave) | 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux; 260 C (500 F) max. for 5 seconds | |||||
| Wash Processes | Not recommended | |||||
| Marking | Manufacturers name and part number, resistance value and date code. | |||||
| Ganging (Multiple Section Potentiometers) | Up to 5 decades maximum | |||||
| Readout Marking | 10 positions, 0-9 | |||||
| Actuating Force | 19 to 29 oz. on detent decades | |||||
| Actuating Force Variation | 4 oz. maximum | |||||
| Model Dimensions (Approximate) | ||||||
| Model | a (.381 mm / .015 in.) | b (mm / in.) | c (mm / in.) | d (mm / in.) | e (mm / in.) | Weight (gms / oz.) |
| 3681 | 16.51 / .650 | 14.99 / .590 | 9.91 / .39 | 4.19 / .165 | 9.5 / .336 | |
| 3682 | 26.67 / 1.05 | 25.15 / .99 | 10.67 / .42 | 11.94 / .47 | 8.38 / .330 | 16.5 / .576 |
| 3683 | 37.08 / 1.46 | 35.31 / 1.39 | 18.54 / .73 | 11.94 / .47 | 4.19 / .165 | 23.5 / .824 |
| 3684 | 47.50 / 1.87 | 45.47 / 1.79 | 30.73 / 1.21 | 11.94 / .47 | 8.38 / .330 | 30.5 / 1.072 |
| 3685 | 57.66 / 2.270 | 55.63 / 2.190 | 39.12 / 1.540 | 11.94 / .47 | 4.19 / .165 | 37.5 / 1.320 |
| Recommended Panel Cutout | ||||||
| Dimension | f (.010 in. / .254 mm) | g (.010 in. / .254 mm) | ||||
| 3681 | 21.08 / .830 | 15.75 / .620 | ||||
| 3682 | 21.08 / .830 | 25.91 / 1.020 | ||||
| 3683 | 21.08 / .830 | 36.07 / 1.420 | ||||
| 3684 | 21.08 / .830 | 46.23 / 1.820 | ||||
| 3685 | 21.08 / .830 | 56.39 / 2.220 |
Recommended Part Numbers
| Model | Resistance () | 1 Decade | 2 Decades | 3 Decades | 4 Decades | 5 Decades |
|---|---|---|---|---|---|---|
| 3681S-1 | 50 | 50-500L | ||||
| 100 | 100-101L | |||||
| 200 | 200-201L | |||||
| 500 | 500-501L | -501L | ||||
| 3682S-1 | 1,000 | -102L | -102L | -102L | ||
| 2,000 | -202L | -202L | -202L | |||
| 5,000 | -502L | -502L | -502L | |||
| 3683S-1 | 10 K | -103L | -103L | -103L | -103L | |
| 20 K | -203L | -203L | -203L | |||
| 50 K | -503L | -503L | -503L | |||
| 3684S-1 | 100 K | -104L | -104L | -104L | -104L | -104L |
| 500 K | -504L | -504L | -504L | |||
| 3685S-1 | 1 Meg | -105L | -105L | -105L | -105L |
*Boldface listings are in stock and readily available through distribution. For other options, consult the factory.
RoHS Identifier: L = Compliant
2411220427_BOURNS-3683S-1-103L_C17558302.pdf
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