Amorphous choke core with air gap

Amorphous choke core with air gap

Performance characteristics:
(1) Wide constant bias magnetic field range: 0-500e
(2) High linear permeability: permeability μ>180
(3) Low high-frequency loss
(4) Excellent frequency characteristics and temperature stability



Application areas:
PFC in DC variable frequency air conditioning
PFC in UPS uninterruptible power supply
PFC in SMPS Switching Power Supply
PFC in Plasma Television
PF in inverter circuit



Density[g/cm³]

Curie tempertureTc[℃]

Crystallization temperatureTx[℃]

 Bs[T]

resistivity ρ[Ω·cm]

Extension coefficient λs[10⁻⁶]

7.3

410

530

1.4

130

27


Part No.

CORE Size
[㎜]

External dimensions

[㎜]

Magnetic circuit 

length[㎝]

[㎝²]

[g]

OC 201208

20×12×8.0

21.8×10.6×10

5.02

0.32

11

OC 261610

26×16×10

30.2×14.3×13.5

6.59

0.42

20

OC 302015

30×20×15

36.7×18×18.6

7.85

0.63

36

OC 322010

32×20×10

34.5×17.5×13.5

8.16

0.51

30

OC 402513

40×25×12.5

45×23×19

10.2

0.79

58

OC 402515

40×25×15

55×23×18

10.2

0.95

70

OC 503215

50×32×15

55×29×18

12.8

1.14

107

OC 644020

64×40×20

69×35×25

16.3

2.04

241

OC 805020

80×50×20

85×47×24

20.41

2.55

377




Production Steps

Insulation Systems

  • Cobalt-iron alloys: based on magnesium oxide (MgO)
  • Nickel-iron alloys: based on zirconium oxide (ZrO) = HITCOAT,  developed and patented by VAC

Gluing Technologies developed by VAC

  • Standard adhesive K-01 for maximum package density
  • High temperature adhesive HT-01 for applications up to 200 °C

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