Thick Film Resistor (CR..A Series)

SDM Wire Wound Power Resistor (WR Series)

Automotive Grade Chip Resistor - CR..A Series
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2615 / 3816 / 4525 / 6327

SDM Wire Wound Power Resistor

Derating Curve
Derating Curve

Features

  • Resistance range:0.1 to 1.2KΩ.
  • Strong anti-lightening surge ability.
  • High loading power, can bear high power load
  • Nonflammable epoxy resin hot-pressing encapsulated, firm in structure
  • Low noise, low T.R.C, perfect stability and high reliability
  • Low noise, low T.R.C, perfect stability and high reliability
  • Suitable for surface mounted (SMT) operating for automation
  • Many kinds of size series for selection
  • Non-inductive wire wound resistors is available that customized by customers.

Applications

  • Anti-thunder modules of microwave communication
  • Power supply models of communication
  • High power supply，lightening stroke surge suppression circuits
  • Protection circuits of signal
  • Power supply of STB or other terminal devices
  • Anti-lightening protection Circuits of base station

Part Numbering

SDM Wire Wound Power Resistor - WR Series Part Numbering

Standard Electrical Specifications

Item
Type		 Power Rating Operating Temp.
Range		 Max.
Operating Voltage		 Max.
Overload Voltage		 Dielectric
Withstanding Voltage		 Resistance Range TCR
(±PPM/°C)
±0.5% ±1% ±2% ±5%
WR15 1/2W
1W		 -55 ~ +175℃
(+275℃ avail)		 200V 350V 500V 0.22Ω~150Ω ±20
±50
±100
±200
WR16 1W
2W		 -55 ~ +175℃
(+275℃ avail)		 250V 500V 500V 0.1Ω~200Ω ±10
±20
±50
±100
±200
WR25 2W
3W		 -55 ~ +175℃
(+275℃ avail)		 350V 700V 500V 0.22Ω~1KΩ ±10
±20
±50
±100
±200
WR27 3W
4W		 -55 ~ +175℃
(+275℃ avail)		 500V 800V 500V 0.1Ω~1.2KΩ ±10
±20
±50
±100
±200

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Company Introduction

Shenzhen Helisto technology co., LTD., with all my heart devoted to the production and sales of high-end precision resistor, capacitor, inductor, diode, varistor and protect the whole series of passive components such as spare parts and other products, the company began in 2004, LTD was established in Taiwan, is Taiwan's first combined with thin/thick film process technology and the high frequency passive component/module design and development capability of professional manufacturers. 

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