Premium Aluminium Dimmer Variable Resistors for Volume Control – Wholesale from FANRUI China Factory

Basic Information

• Brand & Manufacturer: Dongguan Fanrui Technology & Electronics Co., Ltd. Specializes in encoders, potentiometers, and multi – way rotary switches, offering one – stop services from R&D and mold making to production and sales. Custom designs are available.
• Model: RK11NVB01 – M9B5 – FD20A7 – B50K±20%
• Drawing No.：GCT – 11 – 003

Key Parameters

Electrical Characteristics

• Rated Power (B taper)：0.05W
• Rated Voltage：AC50V/DC20V (Max operating voltage applies if rated voltage exceeds it)
• Residual Resistance (R1,2 / R2,3)：≤20Ω
• Rotational Noise：≤100mVp – p (Test: 20V DC between terminals 1 – 3, shaft speed 1 rotation/3s)
• Insulation Resistance：≥100MΩ (250V DC, 1min, terminals to frame)
• Dielectric Strength：250V AC, 50 – 60Hz, 1min (No failure, meets specs)

Mechanical Characteristics

• Total Mechanical Rotation：300°±5°
• Rotational Torque：15 – 60gf.cm (5 – 35°C, 60°/s speed)
• Detents：1C (center detent) or 8C (for detent types)
• Shaft Stop Strength：3kg torque for 5s (No electrical failure)
• Axial Push/Pull Strength：5.0Kg max (No shaft damage, normal rotation)
• Nut Tightening Strength：8.0kgf.cm (No slip or break)
• Shaft Wobble：≤0.7×L/20mm p – p (500gf.cm load at 5mm from shaft tip)

Endurance Performance

• Solderability：75%+ solder coverage after 260°C±5°C dip (3±0.5s); hand – soldering: 300°C±10°C, 3±1s
• Heat Resistance：≤±5% resistance change after soldering (1.6mm single – sided PCB)
• Cold Resistance：≤±20% resistance change after – 25±3°C (120h)
• Humidity Resistance：+35%/-5% resistance change, ≤150mV noise, ≥10MΩ insulation (40±2°C, 90 – 95%RH, 96h)
• Temperature Cycle：≤±30% resistance change after 5 cycles (-10°C ~ 70°C), ≥100MΩ insulation
• Endurance：≤±15% resistance change, ≤150mV noise after 15,000±200 cycles (600 cycles/hour)

Applications