Product Overview
The Bourns 3313 Series is a 3 mm square, single-turn cermet trimming potentiometer designed for surface mount applications. It is compatible with standard surface mount manufacturing processes and offers a rotor stop for in-circuit adjustment. With a rotational and seal life of 100 cycles, it is suitable for RF applications due to its plastic housing. The series is RoHS compliant, with halogen-free models available (identified by a black housing color). It is not recommended for wave soldering.
Product Attributes
- Brand: Bourns
- Product Line: Trimpot Trimming Potentiometer
- Material: Cermet / Sealed
- Housing: Plastic (standard), Black (Halogen Free models)
- Compliance: RoHS compliant, Halogen free models available
- Certifications: U.L. 94V-0 (Flammability)
- Seal Test Medium: Fluorinert
Technical Specifications
| Specification | Details |
|---|---|
| Model Series | 3313 |
| Type | 3 mm Square Single-Turn Cermet / Sealed Trimming Potentiometer |
| Mounting Type | Surface Mount |
| Standard Resistance Range | 10 ohms to 2 megohms |
| Resistance Tolerance | 20 % std. |
| End Resistance | 1 % or 3 ohms max. (whichever is greater) |
| Contact Resistance Variation | 3 % or 3 ohms |
| Adjustability (Voltage Divider) | 0.1 % |
| Adjustability (Rheostat) | 0.2 % |
| Resolution | Infinite |
| Insulation Resistance | 100 megohms min. at 500 vdc |
| Dielectric Strength (Sea Level) | 500 vac |
| Dielectric Strength (70,000 Feet) | 350 vac |
| Adjustment Angle | 220 nom. |
| Max. Soldering Exposure | 250 C/10 seconds |
| Power Rating @ 70 C | 0.125 watt (200 volts max.) |
| Power Rating @ 125 C | 0 watt |
| Operating Temperature Range | -55 C to +125 C |
| Temperature Coefficient (100 ohms) | 150 ppm/C |
| Temperature Coefficient (>100 ohms) | 100 ppm/C |
| Seal Test | 85 C Fluorinert/60 seconds |
| Humidity (MIL-STD 202, Method 106) | TRS 3 %; IR 10 megohms |
| Vibration (20 G) | TRS 1 %; VRS 1 % |
| Shock (100 G) | TRS 1 %; VRS 1 % |
| Load Life (1000 hours @ 70 C) | TRS 3 % |
| Rotational Life | 100 cycles TRS 3 % |
| Thermal Shock (5 cycles) | TRS 2 %; VRS 1 % |
| Mechanical Angle | 250 nom. |
| Torque | 50 g-cm max. |
| Stop Strength | 200 g-cm min. |
| Pushover Strength (S Style only) | 1.6 Kilograms (3.5 lbs) minimum |
| Weight | Approx. 0.01 oz. |
| Marking | Resistance code and date code |
| Wiper Position | 50 % (Actual TR) 10 % |
| Standard Packaging (J, X Styles) | 1000 pcs./7 reel (MSL-1) |
| Standard Packaging (S Style) | 200 pcs./7 reel (MSL-1) |
| Adjustment Tool | H-91 |
| Model 3313X Options | Reverse Pin Layout |
| Model 3313J-1 | Standard Single Slot |
| Model 3313J-2 | Standard Cross Slot |
| Model 3313S-1 | Single Slot |
| Model 3313S-2 | Cross Slot |
| Halogen Free Models | Identified by black housing color (e.g., -GK2, -GL5) |
Standard Resistance Table:
| Resistance (Ohms) | Part Marking Code |
|---|---|
| 10 | A1 |
| 20 | 21 |
| 50 | 51 |
| 100 | A2 |
| 200 | 22 |
| 500 | 52 |
| 1,000 | A3 |
| 2,000 | 23 |
| 5,000 | 53 |
| 10,000 | A4 |
| 20,000 | 24 |
| 50,000 | 54 |
| 100,000 | A5 |
| 200,000 | 25 |
| 500,000 | 55 |
| 1,000,000 | A6 |
| 2,000,000 | 26 |
Popular distribution resistance values are listed in boldface. Special resistances are available.
2410121732_BOURNS-3313J-1-500E_C124624.pdf
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