Bourns PWR221T-30 Series Power Resistor
The Bourns PWR221T-30 Series is a TO-220 style power resistor manufactured using thick film on alumina ceramic technology. Designed for current limiting, capacitor discharge, and current measurement circuits, this series 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, ceramic backplane, high power rating, and compliance with AEC-Q200 and RoHS standards.
Product Attributes
- Brand: Bourns
- Series: PWR221T-30
- Housing: TO-220 style
- Substrate: Alumina (AL2O3)
- Material: Thick film resistor, Tinned Copper pins
- Flammability: Conforms to UL-94V0
- Moisture Sensitivity Level: 1
- ESD Classification (HBM): 3B
- Packaging: 50 pcs./tube
- Origin: COSTA RICA
- Certifications: AEC-Q200 compliant, RoHS compliant*
Technical Specifications
| Specification | Value(s) |
|---|---|
| Resistance Range | 0.02 to 130 K |
| 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) 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 % |
| Power Rating (Free Air) | 2.25 W |
| Power Dissipation (FR4 Board) | 2.8 W |
Popular Resistance Values
| Code | Resistance Value | Code | Resistance Value |
|---|---|---|---|
| R020 | 0.02 *** | 1000 | 100 |
| R025 | 0.025 *** | 1200 | 120 |
| R030 | 0.03 *** | 1500 | 150 |
| R033 | 0.033 *** | 2000 | 200 |
| R040 | 0.04 *** | 2500 | 250 |
| R050 | 0.05 *** | 3000 | 300 |
| R075 | 0.075 *** | 3300 | 330 |
| R100 | 0.1 | 4000 | 400 |
| R150 | 0.15 | 4700 | 470 |
| R200 | 0.2 | 5000 | 500 |
| R250 | 0.25 | 5600 | 560 |
| R300 | 0.3 | 7500 | 750 |
| R330 | 0.33 | 1001 | 1.0 K |
| R400 | 0.4 | 1501 | 1.5 K |
| R500 | 0.5 | 2001 | 2.0 K |
| R750 | 0.75 | 2501 | 2.5 K |
| 1R00 | 1 | 3001 | 3.0 K |
| 1R50 | 1.5 | 3301 | 3.3 K |
| 2R00 | 2 | 4001 | 4.0 K |
| 2R50 | 2.5 | 5001 | 5.0 K |
| 3R00 | 3 | 7501 | 7.5 K |
| 3R30 | 3.3 | 1002 | 10 K |
| 4R00 | 4 | 1502 | 15 K |
| 5R00 | 5 | 2002 | 20 K |
| 7R50 | 7.5 | 2502 | 25 K |
| 8R00 | 8 | 3002 | 30 K |
| 10R0 | 10 | 3302 | 33 K |
| 12R0 | 12 | 4002 | 40 K |
| 15R0 | 15 | 4702 | 47 K |
| 20R0 | 20 | 5002 | 50 K |
| 25R0 | 25 | 5602 | 56 K |
| 27R0 | 27 | 6802 | 68 K |
| 30R0 | 30 | 7502 | 75 K |
| 33R0 | 33 | 8202 | 82 K |
| 40R0 | 40 | 1003 | 100 K |
| 47R0 | 47 | 1153 | 115 K |
| 50R0 | 50 | 1203 | 120 K |
| 56R0 | 56 | 1253 | 125 K |
| 75R0 | 75 | 1303 | 130 K |
How to Order
PWR221T-30-10R0F
- Model: PWR = Power Resistor
- Package: 221 = TO-220 Style
- Pin Style: T = Through-hole
- Power: 30 = 30 W
- Resistance Value: R represents decimal point for values <100 ohms (e.g., 7R50 = 7.5 ; R500 = 0.5 ). For values 100 ohms, first three digits are significant, fourth digit is number of zeros (e.g., 2000 = 200 ; 3002 = 30K ).
- Absolute Tolerance: J = 5 %; F = 1 %
Product Dimensions
Dimensions: MM (INCHES)
Tolerance: 0.38 UNLESS OTHERWISE NOTED (0.015)
| Dimension | Value (mm) | Value (inches) |
|---|---|---|
| Overall Length (LC) | 10.41 0.25 | .410 .010 |
| Body Length (CL) | 8.38 0.25 | .330 .010 |
| Ceramic Diameter | 3.18 0.1 | .125 .004 |
| Pin Diameter | 1.38 0.25 | .054 .010 |
| Pin Width 1 | 3.18 0.25 | .125 .010 |
| Pin Width 2 | 3.18 0.25 | .125 .010 |
| Pin Offset | 2.92 0.25 | .115 .010 |
| Pin Spacing | 2.54 0.25 | .100 .010 |
| Mounting Hole Spacing | 12.7 1.27 | .500 .050 |
| Base Width | 15.62 0.25 | .615 .010 |
| Base Length | 16.26 0.25 | .640 .010 |
| Ceramic Thickness | 0.72 0.12 | .029 .005 |
| Pin Thickness | 1.03 0.25 | .041 .010 |
| Mounting Hole Diameter | 5.08 0.25 | .200 .010 |
| Base Thickness | 1.02 0.25 | .040 .010 |
Typical Part Marking
221 30 R500 1% YYWW COSTA RICA
- MODEL NUMBER
- RESISTANCE CODE
- TOLERANCE
- DATE CODE
- COUNTRY OF ORIGIN
- MANUFACTURER'S TRADEMARK
2410301800_BOURNS-PWR221T-50-25R0F_C5830299.pdf
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