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High Power Resistors

Specifications
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pwr263_internal_construction_diagram
pwr220_20_and_pwr163

Bourns offers a broad range of PWR-series high power thick film resistors with standard packages, surface mounted TO-163 and TO-263 (DPAK and D2PAK) and radial leaded through hole TO-220 and TO-247. These compact packages which are used as standard by semiconductor manufacturers offers space savings to designers and various additional standardized off-the-shelf accessories are available on the market such as thermal and mounting devices.

 

Characteristics
Packages DPAK, D2PAK, TO-220
Rated Power
(at 25 °C case temperature, mounted on heat sink)
20 to 50 W1
Resistance Range 0.02 ohms to 1 megohm
Resistance Tolerance 1 %, ±5 %
Temperature Coefficient ±100, ±200, ±600 ppm/°C
Operating Temperature Range –55 to +155/175 °C
(1) Power rating of 2 to 3.5 W at free air (without heat sink)
 

Available features

  • High power rating
  • Low inductance
  • Resistor electrically isolated from the backplate
  • Suitable for most types of soldering processes
  • RoHS compliant*
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Applications

  • Power supplies
  • Motor drives
  • Test and measurement
  • Rectifiers
  • Capacitor discharging
  • Snubber circuits
  • Current limiting
  • Heater
Product Series
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Series Data Sheet Photo Resistance Range (Ohms) Tolerances Temperature Coefficient Power per Resistor Package Physical Configuration Material MDS Design Files Engineering Buy Now
PWR163 PWR163 PWR163_part 0.02-130K 1 %, 5 % ±100 ppm 25 W DPAK Surface Mount Thick Film PWR163
Downloads Buy
PWR263S-20 PWR263S-20 PWR263_part 0.02-130K 1 %, 5 % ±100 ppm 20 W D2PAK Surface Mount Thick Film PWR263S-20
Downloads Buy
PWR263S-35 PWR263S-35 PWR263S-35_part 0.02 to 130K 1 %, 5 % ±100 ppm 35 W D2PAK Surface Mount Thick Film PWR263S-35
Downloads Buy
PWR220T-20 PWR220T-20 PWR220T_part 0.5 to 130K 1 %, 5 % ±100 ppm 20 W TO-220 Radial Through-hole Thick Film PWR220T-20
Downloads Buy
PWR220T-35 PWR220T-35 PWR220T-35_part 0.02 to 130K 1 %, 5 % ±100 ppm 35 W TO-220 Radial Through-hole Thick Film PWR220T-35
Downloads Buy
PWR221T-30 PWR221T-30 PWR221T-30_part 0.02 to 130K 1 %, 5 % ±100 ppm 30 W TO-220 Through-Hole Thick Film PWR221T-30
Downloads Buy
PWR221T-50 PWR221T-50 PWR221T-50_part 0.02 to 130K 1 %, 5 % ±100/±300/±600 ppm 50 W TO-220 Radial Through-Hole Thick Film PWR221T-50
Downloads Buy
PF2203 PF2203 0.01-51K 1 %, 5 % ±50 ppm/°C (R ≥ 10 Ω)
±100 ppm/°C (0.1 Ω ≤ R < 10 Ω)
±250 ppm/°C (R < 0.1 Ω)
35 W TO-220 Radial Through-hole Thick Film PF2203
Downloads Buy
PFS35 PFS35 0.01-51K 1 %, 5 % ±50 ppm/°C (R ≥ 10 Ω)
±100 ppm/°C (0.1 Ω ≤ R < 10 Ω)
±250 ppm/°C (R < 0.1 Ω)
35 W D2PAK Surface Mount Thick Film PFS35
Downloads Buy
Model/Datasheet Photo MSL Soldering Profiles Packaging Label Terminal CofC 3rd Party Test Reports MDS China RoHS

Bourns® Model PWR220T

Bourns® RS-485 Evaluation Board Video

Training: Bourns® Power Resistors

Training: Bourns® Model PWR263S-20 Fixed Resistor

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