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Wirewound Resistors

Specifications

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Bourns offers a broad range of wirewound resistors with axial leaded through hole and surface mounted packages. These resistors are made by wrapped a high-performance resistive alloy wire around a low thermal resistance ceramic core. Wirewound resistors have superior pulse capability and available in non-inductive styles as well.

W, WS and FW series axial leaded through hole wirewound resistors are coated by UL 94V-0 compliant material.

FW series axial fusible resistor is UL1412 recognized and offers an integrated solution as it provides both inrush current protection and fusible overcurrent protection.

PWR series resistors covered by epoxy molded encapsulation which provides environmental protection for the resistive wire. And due to their wraparound terminations, they are suitable for surface mounting technology.

Characteristics
	W, WS, FW	PWR
Terminal Style	Axial leaded, through hole	Wraparound SMD
Sizes	9.5 x 4 to 52.5 x 8.5 (mm)	2010 to 5322 (inches)
Rated Power at 70®C	1 to 7 W	0.5 to 3 W
Resistance Range	0.01 ohms to 15 kiloohms	0.01 ohms to 15 kiloohms
Resistance Tolerance	±5 %	0.5 %, ±1 %, ±5 %
Temperature Coefficient	±200, ±300 ppm/°C	±20 to ±150 ppm/°C
Operating Temperature Range	–55 to +155/200 °C	–55 to +155/275 °C

Available features

High power rating
Superior pulse capability
Non-inductive version
UL1412 recognized fusible
Customized parts (surge capability, lead form)
Coating material meets UL 94V-0 requirements
RoHS compliant*

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Applications

Telecommunication Base stations
Audio equipment
Medical equipment
Industrial equipment
Smart meters
Renewable energy
Industrial
Power supplies/chargers
Lighting
Instruments/gauges
White goods

Documents

Product Series

Parametric Table

RoHS Files

Collateral

Videos

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Series	Resistance Range	Tolerances	Temperature Coefficient	Power (Watts)	Profile/Package Style	MDS	Design Files	Buy Now
FW Series Fusible	4.7 to 100 Ω	5 %	±200 ppm	1, 2, 3, 5, 7 W	Through-hole Axial Wirewound	FW Series	Downloads	Buy
W Series	15 to 150 Ω	5 %	±300 ppm	1-10 W	Through-hole Axial Wirewound	W Series	Downloads	Buy
WS Series Surge Withstand	15 to 3.3K Ω	5 %	±200 ppm	1-8 W	Through-hole Axial Wirewound		Downloads	Buy
BR/BRT	0.1-1K Ω	1 %, 5 %, 10 %	< 260 PPM/°C	60 - 500 W	High Power Metal Clad Braking Resistor	TBD	Downloads	Buy (BR) Buy (BRT)
BRS	1-1K Ω	1 %, 5 %, 10 %	< 260 PPM/°C	100 - 500 W	Slim Profile High Power Metal Clad Braking Resistor	TBD	Downloads	Buy
HPP	10 - 20K Ω	2 % - 10 %	±20 - ±150 ppm	3 - 10 W	Through-hole Wirewound	HPP	Downloads	Buy
PWR2010	0.1-1K Ω	0.5 %,1 %, 5 %	±20 to ±90 ppm	0.5 W	Surface Mount Wirewound	PWR2010	Downloads	Buy
PWR2615	0.01-3K Ω	1 %, 5 %	±20 to ±150 ppm	1 W	Surface Mount Wirewound	PWR2615	Downloads	Buy
PWR3014	0.1-4K Ω	0.5 %,1 %, 5 %	±20 to ±90 ppm	1 W	Surface Mount Wirewound	PWR3014W	Downloads	Buy
PWR4318	0.1-8K Ω	0.5 %,1 %, 5 %	±20 to ±90 ppm	2 W	Surface Mount Wirewound	PWR4318W	Downloads	Buy
PWR4525	0.01-15K Ω	1 %, 5 %	±20 to ±150 ppm	2 W	Surface Mount Wirewound	PWR4525	Downloads	Buy
PWR5322	0.1-15K Ω	0.5 %,1 %, 5 %	±20 to ±90 ppm	3 W	Surface Mount Wirewound	PWR5322W	Downloads	Buy
PWR6927	0.05 to 16K Ω	0.5 %, 1 %, 5 %	±20 PPM/°C ~ ±300 PPM/°C	3 W	Surface Mount Wirewound	PWR6927	Downloads	Buy
PWR8030	0.05 to 22K Ω	0.5 %, 1 %, 5 %	±20 PPM/°C ~ ±300 PPM/°C	5 W	Surface Mount Wirewound	PWR8030	Downloads	Buy
PWR8937	0.05 to 33K Ω	0.5 %, 1 %, 5 %	±20 PPM/°C ~ ±300 PPM/°C	5 W	Surface Mount Wirewound	PWR8937	Downloads	Buy
PWRA247	0.05 to 50K Ω	0.5 %, 1 %, 5 %	±20 PPM/°C ~ ±300 PPM/°C	7 W	Surface Mount Wirewound	PWRA247	Downloads	Buy
PWRB053	0.05 to 70K Ω	0.5 %, 1 %, 5 %	±20 PPM/°C ~ ±300 PPM/°C	10 W	Surface Mount Wirewound	PWRB053	Downloads	Buy
SF-2	50 - 3M Ω	0.05 % - 1 %	±5 ppm	1 W	Surface Mount Wirewound	SF-2	Downloads	Buy
S-SL	0.005 - 50K Ω	0.05 % - 5 %	±20 - ±150 ppm	0.5 - 4 W	Surface Mount Wirewound	SSL	Downloads	Buy
UAL	0.01 - 250K Ω	0.01 % - 10 %	±20 - ±150 ppm	7.5 - 50 W	Aluminum Housed Wirewound	UAL	Downloads	Buy
UB	0.02 - 260K Ω	0.01 % - 10 %	±20 - ±150 ppm	1 - 15 W	Through-hole Wirewound	UB	Downloads	Buy
UT	0.02 - 320K Ω	0.01 % - 10 %	±20 - ±150 ppm	0.1 - 15 W	Through-hole Wirewound	UT	Downloads	Buy
UV	0.01 - 91K Ω	0.01 % - 10 %	±20 - ±150 ppm	2 - 10 W	Ceramic Wirewound	UV	Downloads	Buy
UW	0.01 - 91K Ω	0.01 % - 10 %	±20 - ±150 ppm	2 - 15 W	Ceramic Wirewound	UW	Downloads	Buy
UWP	1-1K Ω	1 %, 5 %	< 260 PPM/°C	20 - 100 W	High Power Ceramic Wirewound Resistor	TBD	Downloads	Buy