Resistor 20W 3.3k ohm

The Resistor 20W 3.3k ohm is a high-power fixed resistor with a resistance of 3.3 kΩ and a power rating of 20 W. Its large body spreads heat, so it can handle far more power than standard 0.25 W or 0.5 W resistors. It suits power supplies, load testing, capacitor discharge and other circuits where a small resistor would overheat.

Resistor 20W 3.3k ohm Specifications

• Resistance: 3.3 kΩ (3,300 ohms)
• Power rating: 20 W
• Type: fixed power resistor
• Polarity: none, fits either way round
• Current at full power: about 78 mA (I = √(P / R))

Resistor 20W 3.3k ohm Applications

• Bleeder resistors for discharging filter capacitors in power supplies
• Dummy loads and load testing
• Current limiting in high-voltage circuits
• Pre-charge and snubber circuits in power electronics
• Repair work on amplifiers, chargers and inverters

What's in the Box

• 1 × 3.3 kΩ 20 W resistor

Tip: Power resistors get hot under load, so mount them away from wires and plastic parts and run them at about half their rating for long life. With 3.3 kΩ, the full 20 W is only reached at about 257 V across the resistor (P = V² / R); at 24 V it dissipates less than 0.2 W.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.