3214W Small Adjustable Resistor

The 3214W is a 4mm square multi-turn sealed cermet SMD small adjustable resistor designed for surface mount applications. Its sealed construction withstands board wash processing, ensuring reliability in automated assembly. With a top slot adjustment design and pick-and-place centering, this multi-turn trimmer offers stable performance in harsh environments. The device provides a nominal resistance range from 50Ω to 2MΩ with ±10% tolerance, including popular values like 101e(100Ω), 102e(1K), 103e(10K), and 104e(100K), making it suitable for fine-tuning voltage, current, or power in space-constrained circuits.

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Product Description

The 3214W is a 4mm square multi-turn sealed cermet SMD small adjustable resistor designed for surface mount applications. Its sealed construction withstands board wash processing, ensuring reliability in automated assembly. With a top slot adjustment design and pick-and-place centering, this multi-turn trimmer offers stable performance in harsh environments. The device provides a nominal resistance range from 50Ω to 2MΩ with ±10% tolerance, including popular values like 101e(100Ω), 102e(1K), 103e(10K), and 104e(100K), making it suitable for fine-tuning voltage, current, or power in space-constrained circuits.

Product Parameter

Specifications
| Parameter | Value |
|---|---|
| Resistance Range | 50Ω – 2MΩ |
| Tolerance | ±10% |
| Power Rating | 0.25W @ 70°C, 0W @ 125°C |
| CRV | ≤3%R or 3Ω |
| Effective Travel | 4±2 turns |
| Total Mechanical Travel | 5±2 turns |
| Insulation Resistance | ≥1GΩ @ 500Vdc |
| Dielectric Strength | 500 Vac for 1 min |
| Weld Heat Resistance | 250°C for 10 sec |
| Starting Torque | ≤25 mN.m |
| Clutch Torque | ≤35 mN.m |

Dimensions
Outline: 4mm × 4mm square
Height: 2.55mm (reference for 3214 series)
Adjustment type: Top slot
Mounting style: PCB mount, SMD/SMT
Termination: SMD pads
Weight: Approx. 0.2g

(For detailed mechanical drawing, please refer to the product datasheet.)

Product Feature

Product Advantages
Factory direct supply ensures competitive pricing with no middlemen. The 3214W features low CRV (≤3%R or 3Ω) and high stability over a wide temperature range (-55°C to +125°C). It boasts completed certificates like RoHS and REACH, guaranteeing quality assurance. With sufficient production capacity and short delivery times (within 15 workdays), plus professional after-sales support, this trimmer is ideal for volume orders. OEM and ODM services are available for custom requirements.

Applications
This trimmer is widely used in test and measurement equipment (oscilloscopes, signal generators) for calibration and tuning. It serves consumer electronics (audio devices, televisions, gaming consoles) for volume and sensitivity adjustment. In industrial control systems (automation equipment, robotics), it enables fine-tuning of sensors and control loops. Medical devices (diagnostic tools, patient monitors) rely on it for precise parameter setting. Communications equipment (RF devices, telecom infrastructure) uses it for signal matching. Automotive electronics (ECUs, dashboards) benefit from parameter optimization.

Key Features
4mm square SMD package with standard trimmer footprint
Multi-turn cermet element for high precision
Sealed to withstand board wash processing
Pick-and-place centering design with flush adjustment
Low contact resistance variation (≤3%R or 3Ω)
Operating temperature range: -55°C to +125°C
Temperature coefficient: ±100 or ±250 ppm/°C
Mechanical life: 200 cycles with ΔR≤±3%R

Packaging
Packaging specification: 500 pieces per reel (7-inch reel) or 1500 pieces per reel (13-inch reel). The trimmer is shipped in anti-static, environmentally friendly materials compliant with RoHS standards. Each reel is labeled with model number, quantity, and date code. Custom packaging options are available upon request.