Cores

Amorphous cores for medium-frequency transformers

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SYMBOL: AMZ

TYPICAL APPLICATIONS:

  • transformers for induction heating systems
  • transformers for static converters
  • mains transformers

ADVANTAGES:

  • overlapped design enables mounting ready-made windings onto the core
PARAMETERS:
Saturation induction Bs = 1,4 - 1,56 T
Remanence Br ~ 0,8 T
Magnetic permeability µmax = 50000 - 100000
Core losses Ps = 0,2 - 0,3 W/kg
(f=50 Hz and B=1,4 T)
Saturation magnetostriction λs = 25 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 20 kHz
Temperature Tp: up to 200°C
DIMENSIONS:
Symbol: AMLK
Outer diameter (ϕo) ≥ 60 mm
Inner diameter (ϕi) ≤ 40 mm
Symbol: AMLP
Window height (h) ≥ 50 mm
Window width (w) ≤ 30 mm

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Nanocrystalline cores with high saturation induction and reduced magnetic permeability

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SYMBOL: NPT

TYPICAL APPLICATIONS:

  • special transformers
  • switching mode power supplies
  • induction heating systems

ADVANTAGES:

  • linear B(H) dependence over the wide range of B variability
PARAMETERS:
Saturation induction Bs = 1,5 – 1,6 T
Remanence Br = 0,1 – 0,3 T
Coercivity Hc = 30 - 50 A/m
Magnetic permeability µmax ≤ 1500
Core losses Ps = 1 - 2 W/kg ( f=50 Hz, B=1,4 T)
Saturation magnetostriction λs = 8 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 100 kHz
Temperature Tp: up to 250°C
DIMENSIONS:
Outer diameter (ϕo) ≤ 50 - 120 mm
Inner diameter (ϕi) ≤ 30 - 80 mm

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Nanocrystalline cores with reduced remanence

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SYMBOL: NFT

TYPICAL APPLICATIONS:

  • switching mode power supplies
  • special power converters
PARAMETERS:
Saturation induction Bs = 1,15 – 1,2 T
Remanence Br = 0,05 – 0,25 T
Coercivity Hc = 1 – 1,5 A/m
Magnetic permeability µmax ≤ 30 000
(linear B(H) dependence up to B = 1 T)
Core losses Ps = 0,01 W/kg (f=50 Hz, B=1,1 T)
Ps = 146 W/kg (f=100 kHz, B=0,4 T)
Saturation magnetostriction λs = 0,5 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 300 kHz
Temperature Tp: up to 200°C
DIMENSIONS:
Outer diameter (ϕo) ≤ 120 mm
Inner diameter (ϕi) ≤ 80 mm

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Nanocrystalline cores with high saturation induction and magnetic permeability

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SYMBOL: NFI

TYPICAL APPLICATIONS:

  • EMI/RFI suppression chokes
  • voltage transformers
  • current transformers

ADVANTAGES:

  • high saturation induction (almost twice higher than that of Ni80Fe permalloy)
  • good temperature stability
PARAMETERS:
Saturation induction Bs = 1,15 – 1,2 T
Remanence Br = 0,8 – 1 T
Coercivity Hc = 1 – 1,5 A/m
Magnetic permeability initial: µ > 100 000
maximum: µmax = 300 000–500 000
Core losses Ps = 0.04 W/kg (f = 50 Hz, B = 1.1 T)
Saturation magnetostriction λs = 0.5 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 300 kHz
Temperature Tp: up to 200°C
DIMENSIONS:
Outer diameter (ϕo) ≤ 120 mm
Inner diameter (ϕi) ≤ 80 mm

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Nanocrystalline cores with reduced magnetic permeability

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SYMBOL: NFG

T YPICAL APPLICATIONS:

  • output chokes in switching mode power supplies

ADVANTAGES (COMPARED TO CONVENTIONAL FERRITE CHOKES):

  • higher saturation induction Bs ≥ 1 T
  • smaller number of winding turns needed
  • lower core losses
PARAMETERS:
Saturation induction Bs = 1,1 T
Remanence Br ≤ 0,02 T
Magnetic permeability µ = 20 - 100
OPERATING CONDITIONS:
Frequency fp: up to ~ MHz
Temperature Tp: up to 150°C
DIMENSIONS:
Outer diameter (ϕo) 25-50 mm
Inner diameter (ϕi) 20-40 mm

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Amorphous cores with high saturation induction and reduced magnetic permeability

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SYMBOL: AMT

T YPICAL APPLICATIONS:

  • special transformers
  • switching mode power supplies
  • induction heating systems

FEATURES:

  • linearity of B(H) curve over the wide range of B variability
PARAMETERS:
Saturation induction Bs = 1,4 - 1,56 T
Remanence Br = 0,1 - 0,3 T
Coercivity Hc < 10 A/m
Magnetic permeability µmax ≥ 2000
Core losses Ps = 0,1 W/kg
(f=50Hz i B=1,1 T)
Saturation magnetostriction λs = 25 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 20 kHz
Temperature Tp: up to 200°C
DIMENSIONS:
Outer diameter (ϕo) 50-120 mm
Inner diameter (ϕi) 30-80 mm

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Amorphous and nanocrystalline cut/rectangular transformer cores for operation at elevated frequencies

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SYMBOL: AMT(p), NFT(p)

TYPICAL APPLICATIONS:

  • low and medium power transformers operating at elevated frequency

ADVANTAGES:

  • easy assembly
  • low remanence
PARAMETERS:
Saturation induction Bs =< 1,5
Remanence Br =< 0,11 T
OPERATING CONDITIONS:
Frequency fp: up to 5 kHz
Temperature Tp: up to 100°C
DIMENSIONS:
Width 15-50 mm
Height 15-250 mm

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Amorphous cores for step-down distribution transformers

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SYMBOL: AML

TYPICAL APPLICATIONS:

  • 230 V/24 V transformers, from 200 W to 1000 W in rated power

ADVANTAGES:

  • energy saving
  • environment friendly
  • no-load core losses by about 80 % lower than in transformer with a core from silicon steel
PARAMETERS:
Saturation induction Bs = 1,4 - 1,56 T
Remanence Br = 1 -1,3 T (for toroidal core)
Br ~ 0,8 T (for rectangular core)
Coercivity Hc = 5 - 8 A/m
Magnetic permeability µmax ≥ 100000
Core losses Ps = 0,2 - 0,3 W/kg
(dla f=50 Hz i B=1,4 T)
Saturation magnetostriction λs = 25 x 10-6
OPERATING CONDITIONS:
Frequency fp: do 10 kHz (dla rdzenia toroidalnego)
fp: do 20 kHz (dla rdzenia prostokątnego)
Temperature Tp: do 200°C
DIMENSIONS:
Symbol: AMLK
outer diameter (ϕo) 30-200 mm
inner diameter (ϕi) ≥20 mm
Symbol: AMLP
Window height  (h) 50-200 mm
window width (w) 30-120 mm

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Amorphous cores for magnetic screens

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SYMBOL: ACoL

TYPICAL APPLICATIONS:

  • magnetic screens

ADVANTAGES:

  • this material exhibits good soft magnetic properties in the as-quenched state
PARAMETERS:
Saturation induction Bs = 0,6 - 0,7 T
Remanence Br = 0,3 - 0,45 T
Coercivity Hc = 1,5 - 2 A/m
Magnetic permeability µmax = 100000 - 200000
OPERATING CONDITIONS:
Frequency fp: up to MHz
Temperature Tp: up to  150°C
DIMENSIONS:
outer diameter (ϕo) 30-50 mm
inner diameter (ϕi) ≥20 mm

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Amorphous cores with high magnetic permeability

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SYMBOL: AFeNiL

T YPICAL APPLICATIONS:

  • switching mode power supplies
  • force sensors

ADVANTAGES:

  • very high squareness ratio: ~ 0,99
  • high resistivity
PARAMETERS:
Saturation induction Bs = 0,78 - 0,8 T
Remanence Br = 0,75 T
Coercivity Hc = 3 - 4 A/m
Magnetic permeability µmax ≥ 200000
Core losses Ps = 0,1 W/kg (dla f=50 Hz i B=0,7 T)
Saturation magnetostriction λs = 12 x 10-6
OPERATING CONDITIONS:
Frequency fp: up to 20kHz
Temperature Tp: up to 150°C
DIMENSIONS:
Outer diameter (ϕo) 30-50 mm
Inner diameter (ϕi) ≥20 mm

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