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Bourns PWR221T301R50F TO-220 Power Resistor
Bourns PWR221T-30 series power resistors are designed for demanding applications requiring high power dissipation and reliability. These resistors, housed in a TO-220 package, employ thick film on alumina ceramic technology to ensure robust performance. They are AEC-Q200 compliant, making them suitable for automotive applications, and offer a power rating of 30W. Common applications include current limiting, capacitor discharge, and current measurement circuits in power supplies for telecom and industrial equipment. The resistors are available with various resistance values and tolerances, catering to a wide range of circuit design needs. Their low inductance and thermal resistance contribute to efficient heat dissipation and stable operation.
Bourns PWR221T301R50F TO-220 Power Resistor Specifications:
- Resistance: 0.02Ω to 130KΩ
- Power Rating @ 25˚C Case Temperature: 30W
- Tolerance: ±1%, ±5%
- TCR: ±100 PPM/˚C (0.100Ω<R<130.0KΩ), ±300 PPM/˚C (0.050Ω<R<0.100Ω), ±600PPM/˚C (0.020 Ω<R<0.050 Ω)
- Thermal Resistance- Rthj: 4.2 ˚C/W
- Inductance: 0.1µH maximum
- Operating Voltage: √P*R with a maximum of 250V
- Dielectric Strength: 2 KV AC
- Insulation Resistance: 10 GΩ
- Operating Temperature: -55˚C to +150˚C
- Short Term Overload: ΔR ±0.25 % (2x Pr for R < 2Ω, 1.6x Pr for R≥2Ω, V<1.5xOperatingVoltage)
- Load Life: ΔR ±1.0 % (2000 hours at rated power)
- Thermal Shock: ΔR ±0.5 % (-55˚C to 155˚C, 5 cycles)
- Resistance to Soldering Heat: ΔR ±0.5 % (10 seconds at 270˚C)
- Vibration: ΔR ±0.25 % (20 G 10-2000Hz .06” D.A.)
- Terminal Strength: ΔR ±0.2 % (MIL-STD-202, Method 211 Test A1)
- Shock: ΔR ±0.5 % (Saw Tooth: 100 g/6ms)
- Humidity: ΔR ±0.5 % (Steady State 1000hrs.85°C/85 %RH)
- High Temperature Exposure: ΔR ±0.5 % (100hrs- 40 %Pr@+125°C)
- Material Characteristics - Resistor: Thick film
- Material Characteristics - Substrate: Alumina (AL203)
- Material Characteristics - Housing: Epoxy
- Material Characteristics - Pins: Tinned Copper (Sn/Cu)
- Material Characteristics - Flammability: Conforms to UL-94V0
- Moisture Sensitivity Level: 1
- ESD Classification (HBM): 3B
- Packaging: 50 pcs./tube
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Frequently Asked Questions
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How do I troubleshoot issues or seek technical support for part PWR221T301R50F?
You can download the PWR221T301R50F datasheet or visit the Bourns website for support.
Who is the manufacturer of PWR221T301R50F?
Bourns