Beijing Silk Road Enterprise Management Services Co., Ltd.
| Type | Thick Film Resistor |
| Resistance | 250mΩ |
| Power(Watts) | 30W |
| Temperature Coefficient | ±100ppm/℃ |
| Tolerance | ±1% |
| Operating Temperature | -50℃~+150℃ |
| Description | Thick Film Resistor 250mΩ 30W ±100ppm/℃ ±1% TO-220-2 Through Hole Resistors RoHS |
| Mfr. Part # | PWR221T-30-R250F |
| Package | TO-220-2 |
| Model Number | PWR221T-30-R250F |
View Detail Information
Explore similar products
Futaba Elec RSS02J4700A520NH fixed resistor with UL94 V0 flameproof coating and
Wirewound Power Resistor BOURNS W5M15R0J with Low Thermal Resistant Ceramic Core
High voltage precision resistor RESI HVLR1905J1M80K9 with low voltage coefficien
Lead Free Metal Film Fixed Resistors UNI ROYAL MFR0W4F1001A50 Series Precise
Product Specification
| Type | Thick Film Resistor | Resistance | 250mΩ |
| Power(Watts) | 30W | Temperature Coefficient | ±100ppm/℃ |
| Tolerance | ±1% | Operating Temperature | -50℃~+150℃ |
| Description | Thick Film Resistor 250mΩ 30W ±100ppm/℃ ±1% TO-220-2 Through Hole Resistors RoHS | Mfr. Part # | PWR221T-30-R250F |
| Package | TO-220-2 | Model Number | PWR221T-30-R250F |
The Bourns PWR221T-30 Series is a TO-220 style power resistor engineered with thick film on alumina ceramic technology. Designed for demanding applications, it excels in current limiting, capacitor discharge, and current measurement circuits within power supplies for telecom and industrial sectors. Key features include a low inductance, ceramic backplane, high power rating, and compliance with AEC-Q200 and RoHS standards, ensuring reliability and performance in challenging environments. This series is suitable for applications such as power supplies, motor drives, test and measurement equipment, and rectifiers.
| Parameter | Value(s) |
|---|---|
| Resistance | 0.02 to 130 K (See Popular Resistance Values table) |
| Power Rating @ 25 C Case Temperature | 30 W** |
| Power Rating (Free Air @ 25C) | 2.25 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 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 Breakdown | PWR = Power Resistor, 221 = TO-220 Style, T = Through-hole, 30 = 30 W |
| Tolerance Code | F = 1 %, J = 5 % |
*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. Check Popular Resistance Values table.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
>>300
Ecer Certification：
Verified Supplier
Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an... Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...
Get in touch with us
Leave a Message, we will call you back quickly!