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3329S Vertical Adjustable Resistor

3329S Vertical Adjustable Resistor

The 3329S is a 1/4-inch round industrial-grade sealed single-turn cermet trimmer potentiometer with side adjustment, designed for PCB vertical mounting. It offers a resistance range from 10Ω to 5MΩ, with a power rating of 0.5W at 70°C, effective electrical travel of 220°, and mechanical travel of 250°. The multi-finger wiper ensures low contact resistance variation (CRV ≤3%R or 3Ω) and high stability, while insulation resistance is ≥100MΩ at 500Vdc. Its fully sealed construction protects against dust and moisture and withstands cleaning processes, making it suitable for precision electronic circuits.

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Product Description

The 3329S is a 1/4-inch round industrial-grade sealed single-turn cermet trimmer potentiometer with side adjustment, designed for PCB vertical mounting. It offers a resistance range from 10Ω to 5MΩ, with a power rating of 0.5W at 70°C, effective electrical travel of 220°, and mechanical travel of 250°. The multi-finger wiper ensures low contact resistance variation (CRV ≤3%R or 3Ω) and high stability, while insulation resistance is ≥100MΩ at 500Vdc. Its fully sealed construction protects against dust and moisture and withstands cleaning processes, making it suitable for precision electronic circuits.

Product Parameter

| Parameter | Value |
|---|---|
| Resistance Range | 10Ω ~ 5MΩ |
| Tolerance | ±10% |
| Power Rating | 0.5W at 70°C (0W at 125°C) |
| Contact Resistance Variation (CRV) | ≤3%R or 3Ω |
| Insulation Resistance | ≥100MΩ at 500Vdc |
| Dielectric Strength | 500Vac (1 min.) |
| Temperature Coefficient | ±100, ±250ppm/°C |
| Mechanical Endurance | 200 cycles (ΔR≤±3%R) |
| Operating Temperature | -55°C ~ +125°C |
| Starting Torque | ≤25 mN.m |
| Clutch Torque | ≤35 mN.m |

Product Feature

Product Advantages
We offer factory-direct supply with full RoHS and REACH certifications. The single-turn design with a multi-finger wiper guarantees ΔR≤±3%R after 200 mechanical cycles, ensuring excellent durability. It operates reliably across a wide temperature range from -55°C to +125°C and has a dielectric strength of 500Vac (1 min.), suitable for harsh industrial environments. Available with ±10% tolerance, it maintains ΔR≤±3%R after 1000 hours of load life at 70°C. The cermet element ensures long-term reliability. OEM/ODM services and flexible delivery are available.

Application Fields
The 3329S trimmer is widely used in consumer electronics (TVs, audio equipment), telecommunications (radios, antenna tuning), industrial automation (sensors, actuator control), medical instruments (patient monitoring, diagnostic tools), automotive electronics (dashboards, audio systems), test and measurement instruments (multimeter calibration), and aerospace & defense (electronic systems, communication modules). Its sealed design and high reliability make it especially suitable for harsh, dusty, humid, or vibrating environments, providing engineers with a reliable solution for circuit debugging and performance optimization.

Product Features

1/4-inch round industrial-grade form factor, button shape

Single-turn, side adjustment

Fully sealed construction, washable, dust and moisture proof

Cermet resistive element, multi-finger wiper

Effective electrical travel 220°, total mechanical travel 250°

Resistance range 10Ω~5MΩ, tolerance ±10%

PC pin termination, PCB vertical mounting

RoHS compliant

Dimensions & Packaging
Dimensions (typical, mm): Round body diameter approx. 6.4mm (1/4 inch), height approx. 5.5mm (excluding adjustment slot). Side slot fits a standard screwdriver. Pin spacing fits a 2.54mm standard PCB grid. Mounting: PCB vertical through-hole (PC pin). Packaging: Tube (50 pcs/tube). Outer packaging: 1000 pcs/box, 5000 pcs/carton. Suitable for manual or automated insertion.
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