3224J 4mm SMD trimmer potentiometer PCB Mount Potentiometers
Quick Detail
•4mm Square SMD Trimmer Potentiometer – Compact 3224 footprint for high-density PCB applications.
•Multiturn Cermet Design – High precision adjustment with stable and reliable performance.
•Sealed Structure – Supports PCB washing and improves long-term reliability.
•SMT Pick & Place Compatible – Suitable for automated assembly and reflow soldering.
•Low CRV Performance – CRV ≤3%R or 3Ω for consistent adjustment accuracy.
•Direct 3224 Series Replacement – Compatible dimensions for easy production line replacement.
•Low MOQ – Minimum order quantity of 1,000 pcs for flexible sourcing.
Description
- The 3224J SMD cermet trimmer potentiometer is a compact, high-precision multiturn adjustment component designed for space-saving and high-reliability PCB applications. Featuring a standard 4mm square SMD footprint, it is an ideal replacement solution for mainstream 3224 series trimmer potentiometers, allowing customers to directly replace existing components without changing PCB layouts or SMT production processes.
With a sealed construction, the 3224J is resistant to PCB board washing processes and suitable for automated pick-and-place assembly and reflow soldering. The centering design and flush adjustment structure ensure easy installation and stable adjustment performance in high-volume electronic manufacturing.
The 3224J offers a wide resistance range from 50Ω to 2MΩ with a ±10% tolerance, providing flexible solutions for different circuit adjustment requirements. Its low contact resistance variation (CRV ≤3%R or 3Ω) ensures consistent tuning accuracy and long-term reliability. The multiturn design provides 9±2 effective turns and 10±2 total mechanical turns, enabling precise calibration and fine resistance adjustment.
Designed for demanding electronic environments, the 3224J withstands soldering temperatures up to 250°C for 10 seconds and operates reliably across a wide temperature range of -55°C to +125°C. With excellent temperature stability (±250ppm/°C, ±100ppm/°C options), it is widely used in communication equipment, industrial controls, instrumentation, automotive electronics, and other precision electronic applications.
Combining compact size, high adjustment accuracy, stable performance, and cost-effective replacement capability, the 3224J provides a reliable alternative solution for engineers and manufacturers seeking high-quality SMD trimmer potentiometers.
Specifications
|
Electrical Characteristics |
Nominal Resistance Range | 50Ω-2MΩ |
| Resistance Tolerance | ±10% | |
| Terminal Resistance | ≤±1% R or 3Ω | |
| Contact Resistance Variation (CRV) | ≤3%R or 3Ω | |
| Insulation Resistance | 500 Vdc. R1≥1GΩ | |
| Withstand Voltage | 101.3KPa, 500 Vac;8.5KPa, 250 Vac | |
| Dielectric Strength Sea Level | 500 Vac(1 Min.) | |
| Effective Travel | 9±2 Turns | |
|
Environment Characteristics |
Weld Heat Resistance | 250ºC , 10 Sec. |
| Rated Power | 70ºC, 0.25W;125ºC, 0W | |
| Temperature Range | -55°C ~ + 125°C | |
| Temperature Coefficient | ±250 ppm /°C, ±100 ppm /°C | |
| Temperature Variation | ΔR≤±2%R, Δ(Uab/Uac)≤±1% | |
| Collision | 10-500Hz, 0.75mm, 6h ΔR≤±1%R, Δ(Uab/Uac)≤±2% | |
| Vibration | 100G, ΔR≤±1%R, Δ(Uab/Uac)≤±2% | |
| Electrical Endurance At 70°C | 1000 hours @ 70ºC Rated Power; ΔR≤±3%R | |
| Mechanical Endurance | 200 cycles, ΔR≤±3%R | |
|
Physical Characteristics |
Total Mechanical Travel | 10±2 Turns |
| Starting Torque | ≤25 mN.m | |
| Clutch Torque | ≤35 mN.m |
Dimension
Packaging
Available Resistance Values
BOCHEN provides multiple resistance options:
- 102E (1KΩ)
- 103E (10KΩ)
- 153E (15KΩ)
- 203E (20KΩ)
- 503E (50KΩ)
- 104E (100KΩ)
Custom resistance values are available according to customer requirements.
Features
Direct Replacement Compatible
Designed to match mainstream 3224 series specifications, allowing customers to directly replace existing components without changing PCB layout or SMT production processes.
Compact SMD Package
4mm compact surface mount design saves PCB space and is ideal for high-density electronic applications.
High Precision Multi-Turn Adjustment
Multi-turn adjustment structure provides accurate resistance tuning and reliable calibration performance for precision circuits.
High Stability Cermet Element
Premium cermet resistive material ensures excellent temperature stability, low resistance drift, and long-term reliability.
SMT Production Ready
Compatible with automated pick-and-place assembly and reflow soldering processes, supporting efficient mass production.
The 3224J series is designed as a direct replacement for mainstream 3224 series trimmer potentiometers. Featuring the same compact dimensions, compatible electrical performance, and reliable quality, customers can replace their existing 3224 series trimmer potentiometers with the 3224J directly while keeping the original PCB layout, SMT process, and assembly equipment unchanged. With stable performance and cost-effective advantages, the 3224J provides a reliable alternative solution for high-volume electronic manufacturing.
Applications
Consumer Electronics
Used in audio equipment, display systems, power management circuits, and other electronic devices requiring precise resistance adjustment and calibration.
Communication Equipmen
Applied in communication devices such as routers, modems, and wireless equipment for signal calibration, voltage adjustment, and circuit optimization to ensure stable performance.
Medical Equipment
Suitable for medical instruments, patient monitoring systems, and diagnostic equipment where accurate calibration and stable electrical performance are essential.
Automotive Electronics
Used in automotive electronic systems, including ECUs, sensors, and control modules, for adjusting voltage levels, signal parameters, and circuit calibration.
Industrial Control Systems
Integrated into PLCs, automation equipment, control panels, and measurement instruments for precise parameter adjustment and reliable operation in industrial environments.
Test and Measurement Equipment
Applied in electronic testing instruments and measuring devices that require accurate resistance tuning and stable calibration performance.
Advantages
FAQ
The 3224J is a compact surface-mount multiturn trimmer potentiometer designed for precise resistance adjustment on PCBs.
• Is 3224J suitable for SMT production?
Yes. The 3224J series is designed for surface mount PCB assembly and automatic pick-and-place SMT processes, compatible with standard reflow soldering conditions.
• What resistance values are available for 3224J?
Common resistance values include 10kΩ, 15kΩ, 50kΩ and 100kΩ. Full range of standard E-series resistances is in stock, and customized resistance values are also available upon request.
• Can BOCHEN provide OEM trimmer potentiometers?
Yes. BOCHEN provides OEM manufacturing, including laser marking of customer logos, custom packaging and full customized electronic component solutions.
• What about its adjustment type?
It is a multiturn cermet trimmer with top adjustment.
• Can I order a small quantity of 3224J trimmer potentiometers?
Yes. BOCHEN supports a low MOQ of 1,000 pcs, making it suitable for prototype projects, product testing, and volume production.
.You can confirm these key points first:
Mounting style: Choose SMT type like 3224J for automated SMT mass production, or through-hole models for manual welding.
Resistance range: Confirm your required nominal resistance and tolerance grade.
Adjustment demand: Pick multiturn trimmers (such as 3224J) if you need high-precision calibration; single-turn types are for rough adjustment scenarios.
Working environment: Evaluate operating temperature, vibration, dust and load conditions to select cermet or carbon-film materials.
Application industry: Special sectors including medical, automotive and industrial control need components with better stability and reliability.
If you have unclear parameters, our engineering team can provide model recommendation based on your circuit design.
• Can you offer samples for testing?
Yes, free samples are available for quality verification, only international shipping cost needs to be borne by the buyer.