3329H-1 0.5w 20k Ohms 1/4″ Round Variable Resistor Single Turn Cermet Trimmer Potentiometer
Feature:
• 1/4˝ Round / Industrial / Sealed.
• Single turn trimmer resistor.
• Cermet element sype.
• 4 standard terminal styles.
Description:
The 3329H cermet trimming potentiometer is a high-precision adjustable resistor designed for fine-tuning and calibration in electronic circuits. This trimmer potentiometer features a robust cermet element that offers excellent stability and reliability, ensuring consistent performance even in harsh environmental conditions. The 1/4″ round form factor makes it compact and suitable for various design configurations, providing flexibility in PCB layout and integration. Key features of the 3329 include a multi-turn adjustment mechanism, which allows for precise and incremental resistance changes. This is particularly beneficial for applications requiring fine-tuning over a wide resistance range. The potentiometer is available in a variety of resistance values, making it versatile for different circuit requirements.
The 3329H is designed with a fully sealed construction, protecting the internal components from dust, moisture, and other contaminants, thereby enhancing its durability and lifespan. It also features a top or side adjustment option, providing ease of access during installation and maintenance.This trimming potentiometer is ideal for use in a wide range of applications, including telecommunications, medical devices, industrial controls, and instrumentation. Its high accuracy and reliable performance make it a preferred choice for engineers and designers looking for dependable components to achieve precise resistance adjustments in their electronic designs.
Specification:
| Electrical Characteristics | Nominal Resistance Range | 10Ω~5MΩ |
| Resistance Tolerance | ±10%; ±20% | |
| Terminal Resistance | ≤±1% R or 3Ω | |
| Contact Resistance Variation (CRV) | ≤3%R or 3Ω | |
| Insulation Resistance | 500 Vdc. 100 megohms min. | |
| Withstand Voltage | 101.3KPa, 500 Vac；8.5KPa, 250 Vac | |
| Dielectric Strength Sea Level | 500 Vac(1 min) | |
| Effective Travel | 220° | |
| Environment Characteristics | Weld Heat Resistance | 250℃, 10S |
| Rated Power | 70℃, 0.5W；125℃, 0W | |
| Temperature Range | -55°C ~ + 125°C | |
| Temperature Coefficient | ±250, ±100 ppm /°C | |
| Temperature Variation | ΔR≤±3%R, Δ(Uab/Uac)≤±1% | |
| Collision | 20G, ΔR≤±1%R, Δ(Uab/Uac)≤±1% | |
| Vibration | 100G, ΔR≤±1%R, Δ(Uab/Uac)≤±2% | |
| Electrical Endurance At 70°C | 1000 hours @ 70℃ Rated Power; ΔR≤±3%R | |
| Mechanical Endurance | 200 cycles, ΔR≤±3%R | |
| Physical Characteristics | Total Mechanical Travel | 250° |
| Starting Torque | ≤25 mN.m | |
| Clutch Torque | ≤35 mN.m |
Dimension:
Dimensions in mm, tolerances ±0.30 mm unless otherwise specified.
Packaging:
Packaging specification: 50 pieces/tube, 5000 pieces/carton.
Application:
The 3329H potentiometer finds applications in various fields, including:
• Audio equipment: It is used for volume control, tone adjustment, and equalization in amplifiers, mixers, and audio systems.
• Consumer electronics: It is used in devices such as televisions, radios, and portable audio players for volume control and user interface adjustments.
• Industrial controls: It is used in industrial automation systems for precise control of machinery, motor speed, and process parameters.
• Test and measurement instruments: It is used in multimeters, oscilloscopes, and other testing equipment for calibration and signal adjustment.
• Robotics and automation: It is used in robotic systems for position sensing, control, and feedback adjustment.
• Power supplies: It is used in voltage regulators and power control circuits for accurate voltage adjustment.
• Automotive electronics: It is used in automotive applications for control of lighting, fan speed, and other adjustable features.
• Telecommunications: It is used in telecom equipment for signal level adjustment and attenuation control.
Advantage:
• Factory direct supply, no middlemen.
• Completed certificates such as RoHS, REACH, etc and best quality assurance.
• Sufficient production capacity, short delivery time.
• Professional after-sales service team.
• OEM&ODM available.
