The cores of MSK series are made of thin (25 +-5 microns) Co-based amorphous ribbon, have square B-H loop and have much higher permeability than their analogs made of Fe-Ni-based permalloys and ferrites. The product's design is optimized for use with single-turn coil, which is usually component (transistor, diode) output

 

Having a very high inductance at the moment of the current transition through zero, these products effectively block the rapid changes in electrical current, which could lead to electrical noise and interference, as well as damage the semiconductor devices with short high-potential emissions.

 

This class of products provides more efficient noise reduction, essentially eliminating their cause, significantly reduces losses compared to the classical RC snubbers and ferrite cores of similar purpose.

 

CONFIGURATION:

Ribbon wound magnetic core is placed into hard protective container of glass-polyamide and mechanically fixed with silicone sealant. The container provides reliable mechanical protection and preservation of amorphous material's properties. All materials comply with UL94V-1 / 0.

 

KEY FEATURES OF THE AMORPHOUS MATERIAL:

  • Induction amplitude, Bm (25°C) 0.62 T
  • Induction amplitude, Bm (90°C) 0.54 T
  • Squareness ratio Br/Bm (@ 100 kHz, 80 A/m) at least 0.90
  • Curie temperature, Tc 225°C
  • Operating temperature range -60°C ... +100°C
  • Magnetostriction less than 0.1´10^-6

 

ADVANTAGES:

  • Higher efficiency of blocking electric current changes
  • Low loss
  • Low output voltageripple in SMPS
  • Saving PCB space
  • Simplicity of design

 

APPLICATION:

  • SMPS
  • Power converters
  • Electric motor control circuits
  • Semiconductor switches
  • Miniature common mode filters
  • Semiconductor devices protection

 

ENTRY EXAMPLE:

MSB-03 A-N, where:

  • MS– MSTATOR;
  • B – application (interference suppression);
  • 03 – outer diameter in mm;
  • A – cross section reference code;
  • N – thermal treatment without magnetic field.

 

DIMENSIONS AND KEY FEATURES:

TYPE

Dimensions in container  (without a container)

 (mm)

Mean line length

Lm, mm

Cross-section

Ac, mm2

Inductance

AL

(µH/turn2)

(50 kHz)

Dynamic parameters

@ F=100 kHz, Hm=1 Oe (80 A/m), 25°C

Flux

m

(µWb) 

Coercitivity

Hc

(A/m)

Squareness ratio

Br/Bm

(%)

  Nominal Nominal Nominal Min Max Min
MSB– 03A - N 4.0-1.5-4.5
(3.0-2.0-3.0)
7.75 1.20 3.00 1.10 25 88
MSB – 03S - N 4.0-1.5-6.0
(3.0-2.0-4.5)
7.75 1.80 5.00 1.65
MSB – 03B - N 4-1.5-7.5
(3.0-2.0-6.0)
7.85 2.40 7.00 2.20
MSB – 04S - N 5.1-1,5-6.0
(4.0-2.0-4.5)
9.06 3.60 9.00 3.30
MSB – 04B - N 5.1-1.5-7.5
(4.0-2.0-6.0)
9.06 4.80 12.0 4.40
MSB-045A-N 6.5-2.4-6.0
(4.5-4.0-3.0)
13.30 0.59 0.89 0.62
MSB-05A-N 7.0-2.4-6.0
(5.0-4.0-3.0)
14.10 1.17 1.40 1.05
Operating temperature range -60°C ... +100°C

ADDITIONAL PARAMETERS AND CHARACTERISTICS: