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3329H-1 Industrial Grade Trimmer

3329H-1 Industrial Grade Trimmer

The 3329H-1 is a 1/4-inch round industrial-grade sealed single-turn cermet trimmer resistor with top slot adjustment. Resistance range 10Ω to 5MΩ, power rating 0.5W @70°C, effective electrical travel 220°, mechanical travel 250°. CRV ≤3%R or 3Ω, insulation resistance ≥100MΩ @500Vdc. Multi-finger wiper ensures low CRV and high stability. Fully sealed construction protects against dust and moisture, withstands cleaning processes. Designed for PCB through-hole mounting with PC pins.

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Product Description

The 3329H-1 is a 1/4-inch round industrial-grade sealed single-turn cermet trimmer resistor with top slot adjustment. Resistance range 10Ω to 5MΩ, power rating 0.5W @70°C, effective electrical travel 220°, mechanical travel 250°. CRV ≤3%R or 3Ω, insulation resistance ≥100MΩ @500Vdc. Multi-finger wiper ensures low CRV and high stability. Fully sealed construction protects against dust and moisture, withstands cleaning processes. Designed for PCB through-hole mounting with PC pins.

Product Parameter

Specifications
| Parameter | Value |
| Resistance range | 10Ω ~ 5MΩ |
| Tolerance | ±10%, ±20% |
| Power rating | 0.5W @70°C (0W @125°C) |
| CRV | ≤3%R or 3Ω |
| Insulation resistance | ≥100MΩ @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 |

Dimensions & Packaging
Dimensions (typical, mm): Round body diameter approx. 6.4mm (1/4 inch), height approx. 4.8mm (excluding adjustment slot). Top slot fits standard screwdriver. Pin spacing fits 2.54mm standard PCB grid.

Mounting: PCB Through-hole (PC pin).
Packaging: Tube (50 pcs/tube). Outer packaging: 1000 pcs/box, 5000 pcs/carton. Suitable for manual or automated insertion.

Product Feature

Product Advantages
Factory direct with RoHS & REACH certifications. Single-turn design with multi-finger wiper ensures ΔR≤±3%R after 200 mechanical cycles. Sealed body withstands harsh industrial environments and cleaning. Operating temperature -55°C to +125°C, dielectric strength 500Vac (1 min.). Tolerance ±10% or ±20%, after 1000 hours load life @70°C ΔR≤±3%R. Cermet element ensures long-term reliability and stability. OEM/ODM available.

Product Features
1/4-inch round industrial-grade form factor, button shape
Single-turn, top slot 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% or ±20%
PC pin termination, PCB through-hole mounting
RoHS compliant

Applications
Ideal for: Audio equipment (volume control, tone adjustment, equalizers), consumer electronics (TVs, radios, portable audio players), industrial controls (automation systems, machinery, motor speed, process parameters), test & measurement instruments (multimeters, oscilloscopes, calibration), robotics & automation (position sensing, control, feedback), power supplies (voltage regulators, power control circuits), automotive electronics (lighting control, fan speed), telecommunications (signal level adjustment, attenuation control). The sealed design is especially suited for harsh environments with moisture and dust.
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