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2W Metal Film Resistors 1% Tolerance 1Ω–1MΩ — 10-Pack (Select Value)
2W Metal Film Resistors 1% Tolerance 1Ω–1MΩ 10-Pack (Select Value)
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2W Metal Film Resistors — 1% Tolerance, 1Ω–1MΩ (10-Pack)
These 2W metal film resistors offer 1% tolerance and ±100ppm/°C temperature coefficient in a larger body capable of dissipating 2 watts continuously. Available in values from 1Ω to 1MΩ, they are the preferred choice for power supply circuits, current sensing shunts, dummy loads, and any application where 1/4W resistors are insufficient.
Key Specifications
| Parameter | Value |
|---|---|
| Power Rating | 2W |
| Tolerance | ±1% |
| Value Range | 1Ω – 1MΩ (E96 series) |
| Temperature Coefficient | ±100ppm/°C |
| Color Code | 5-band (4 value bands + 1 tolerance band) |
| Construction | Metal film on ceramic substrate |
| Max Voltage | 500V |
| Operating Temperature | −55°C to +155°C |
| Lead Pitch | Standard through-hole (axial) |
| Quantity | 10 pieces (single value per pack) |
2W vs 1/4W — When to Use 2W
| Application | Recommended Rating | Example |
|---|---|---|
| LED current limiting (5V, 20mA) | 1/4W | 5²/220Ω = 113mW |
| Power supply bleeder resistor | 2W | 12²/100Ω = 1.44W |
| Current sense shunt (1A, 1Ω) | 2W | 1²×1Ω = 1W |
| Dummy load (12V, 100mA) | 2W | 12²/120Ω = 1.2W |
Why Choose 2W Metal Film?
- 2W Power Rating — Handles higher current and voltage applications safely
- 1% Tolerance — Precision value for accurate current sensing and voltage division
- ±100ppm/°C — Stable resistance over temperature; critical for current sense accuracy
- 500V Max Voltage — Suitable for mains-connected bleeder and snubber circuits
- Low Noise — Metal film construction for clean signal in sensitive circuits
Typical Applications
- Power supply bleeder resistor (discharge filter capacitors)
- Current sensing shunt (low-value, high-power)
- Dummy load for power supply testing
- Voltage divider in high-voltage circuits
- RC snubber resistor in SMPS and motor drives
- Gate resistor for MOSFET/IGBT switching circuits
FAQ
Q: How do I read a 5-band 2W resistor color code?
A: Bands 1–3 = significant digits, Band 4 = multiplier, Band 5 = tolerance (brown = ±1%). Example: Red-Red-Black-Brown-Brown = 220 × 10 = 2.2kΩ ±1%.
Q: Should I derate 2W resistors in enclosed enclosures?
A: Yes — derate to 50–70% of rated power in enclosed or high-temperature environments. Use 1.0–1.4W maximum for reliable long-term operation.
Package Contents
- 10× 2W Metal Film Resistor (selected value, ±1%)
