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Products » EPCOS AG Ferrites and Cores » EPCOS ferrite materials »

EPCOS ferrite materials

Electromagnetic parameters of Epcos ferrite materials and recommendations for choosing.

Power materials

For Power transformers:

For frequency f<100 kHz

  • N27 (µi = 2000) base power materials, low cost, hi-power
  • N41 (µi = 2800) applied in current transformers
For frequency f<500 kHz
  • N87 (µi = 2200) base power material
  • N97 (µi = 2300) the lowest losses
  • N95 (µi = 2000) low losses, flat temperature behavior, the dependence of core losses from temperature is close to linear
  • N51 (µi = 3000) losses min. at 40°C
For frequency f>500 kHz
  • N49 (µi = 1500)
Output choke (high Bsat @ 100°C)
  • N87 (µi = 2200) standard
  • N92 (µi = 1500) higher saturation
  • N93 (µi = 1250*) highest saturation
Ballast
  • N72 (µi = 2500) N72 (µi = 2500 ) low Br , near flat temperature behaviour

 

Broadband

Signal transformer (low THD)

ADSL

  • T38 (µi = 10000) base material with high permeability
  • T66 (µi = 13000) ADSL2
SHDSL
  • T57 (µi = 4000)
VDSL
  • M33 (µi = 750)
Splitter (high Bsat @room temperature)
  • N45 (µi = 3800)

 

Resonance circuit

Filter coil (low tan d/µi, high Q, stable µi over T)

f<100 kHz

  • N48: (µi = 10000) stable impedance over temperature
  • N45: (µi = 3800) high Bsat
f<1 MHz
  • M33 (µi = 750)
f>1 MHz
  • K1 (µi = 80)

 

Proximity switch

Sensor coil (high and stable Q over T)

f<100 kHz

  • N22: (µi = 2300)
f<1 MHz
  • M33 (µi = 750)
f>1 MHz
  • K1 (µi = 80)

 

EMI

Current-compensated choke (high impedance)

  • N30: (µi = 4300) extended frequency response
  • T35: (µi = 6000) medium permeability
  • T36: (µi = 7000) stable impedance over temperature
  • T37: (µi = 6500) low tanδ/µi
  • T38: (µi = 10000) high Inductance low ηB
  • T65: (µi = 5200) high Bsat and high Tc
  • T46: (µi = 15000) highest permeability
Filter choke (high impedance)
  • T36: (µi = 7000) stable impedance over temperature
  • T65: (µi = 5200) high Bsat and high Tc
Data line choke (high data rate)
  • M13: (µi = 2300) high frequency, high permeability
  • K8: (µi = 860) highest frequency
  • K10: (µi = 800) highest frequency

 

 
NORTH-WESTERN LABORATORY: NEWS
 
05.06 09 
Epcos has developed a new N95 power ferrite material with an exceptionally low power loss.



12.05 09 
New Epcos ferrite ring core sizes : N87 R20*12*6 and N87 R28*16*9



02.02 09 
New Epcos ferrite E core size : N87 E16/8/7,8 B66502GX187



 
 


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