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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