Product Overview
The Bourns PWR221T-30 Series is a TO-220 style power resistor engineered with thick film on alumina ceramic technology. Designed for current limiting, capacitor discharge, and current measurement circuits, this resistor is ideal for power supplies in telecom and industrial applications, as well as motor drives, test and measurement equipment, and rectifiers. Key features include a low inductance, high power rating, and compliance with AEC-Q200 and RoHS standards, ensuring reliability and performance in demanding environments.
Product Attributes
- Brand: Bourns
- Series: PWR221T-30
- Housing: TO-220 style
- Technology: Thick film on alumina ceramic
- Substrate Material: Alumina (AL203)
- Housing Material: Epoxy
- Pin Material: Tinned Copper (Sn/Cu)
- Flammability: Conforms to UL-94V0
- Moisture Sensitivity Level: 1
- ESD Classification (HBM): 3B
- Packaging: 50 pcs./tube
- Certifications: AEC-Q200 compliant, RoHS compliant
- Origin: COSTA RICA
Technical Specifications
| Parameter | Value(s) |
|---|---|
| Resistance Range | 0.02 to 130 K |
| Power Rating @ 25 C Case Temperature | 30 W** |
| Power Rating (Free Air @ 25 C) | 2.25 W** |
| Tolerance | 1%***, 5% |
| TCR (0.100 < R < 130.0 K) | 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 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 % |
| Model Number Structure | PWR221T-30-ResistanceValue-Tolerance |
| Example Part Marking | 221 30 R500 1% YYWW COSTA RICA |
| Dimensions (L x W x H) | 10.41 0.25 (.410 .010) x 15.62 0.25 (.615 .010) x 16.26 0.25 (.640 .010) mm (inches) |
| Lead Diameter | 0.72 0.12 (.029 .005) mm (inches) |
| Power Derating Curve Reference | Included in datasheet |
| Pulse Power Rating Reference | Included in datasheet (Energy in Joules vs. Overload Duration) |
| Soldering Profile Reference | Included in datasheet |
Note: Specifications are subject to change without notice. Users should verify actual device performance in their specific applications.
2410301800_BOURNS-PWR221T-30-R100F_C6742099.pdf
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