Product Overview
The Bourns PWR221T-30 Series is a high-power TO-220 style resistor designed for demanding applications. Utilizing thick film on alumina ceramic technology, this resistor is ideal for current limiting, capacitor discharge, and current measurement circuits in power supplies for telecom and industrial sectors. Key features include a low inductance, AEC-Q200 compliance, and high power rating, making it suitable for power supplies, motor drives, test and measurement equipment, and rectifiers.
Product Attributes
- Brand: Bourns
- Series: PWR221T-30
- Housing Material: Epoxy
- Substrate Material: Alumina (AL203)
- Pin Material: Tinned Copper (Sn/Cu)
- Flammability: Conforms to UL-94V0
- Moisture Sensitivity Level: 1
- ESD Classification (HBM): 3B
- Certifications: AEC-Q200 compliant, RoHS compliant*
- Country of Origin: Costa Rica
- Packaging: 50 pcs./tube
Technical Specifications
| Parameter | Value(s) |
|---|---|
| Resistance Range | 0.02 to 130 K (See Popular Resistance Values table) |
| Power Rating @ 25 C Case Temperature | 30 W** |
| Tolerance | 1 %***, 5 % |
| TCR (0.100 <R<130.0K ) | 100 PPM/C |
| TCR (0.050 <R<0.100 ) | 300 PPM/C |
| TCR (0.020 <R<0.050 ) | 600 PPM/C |
| Thermal Resistance (Rthj) | 4.2 C/W |
| Inductance | 0.1 H maximum |
| Operating Voltage | P*R with a maximum of 250 V |
| Dielectric Strength | 2 KV AC |
| Insulation Resistance | 10 G |
| Operating Temperature | -55 C to +150 C |
| Short Term Overload R | 0.25 % |
| Load Life (2000 hours at rated power) R | 1.0 % |
| Thermal Shock R | 0.5 % |
| Resistance to Soldering Heat R | 0.5 % |
| Vibration R | 0.25 % |
| Terminal Strength R | 0.2 % |
| Shock R | 0.5 % |
| Humidity (Steady State) R | 0.5 % |
| High Temperature Exposure R | 0.5 % |
| Dimensions (L x W x H) | 16.26 0.25 (.640 .010) x 10.41 0.25 (.410 .010) x 8.38 0.25 (.330 .010) mm (inches) |
| Pin Diameter | 3.18 0.1 (.125 .004) mm (inches) |
| Lead Spacing | 2.54 0.25 (.100 .010) mm (inches) |
| Power Rating (Free Air) | 2.25 W |
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Power rating of 2.25 W when mounted free to air (no heat sink).
*** Available for most values.
2411061756_BOURNS-PWR221T-30-2501F_C3539374.pdf
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