MSP series of high permeability magnetic cores with or without DC biasing possibility are designed for several types of pulse transformers for modern communication equipment for ISDN, LANs, xDSL digital networks, modems, etc.

Pulse transformers and interface matching chokes for digital communication networks must have high magnetic permeability at maximum possible DC biasing. Traditionnaly Mn-Zn ferrite was used as the main magnetic material for pulse transformers and interface chokes. However, due to low permeability and respectively low impedance it is difficult to achieve small size of products. If the increase in impedanceis achieved by increasing the number of winding turns, the frequency characteristics will deteriorate: the parasitic capacitance increases and the resonance frequency decreases. As a result, it is difficult to ensure compliance with the ITU-T I.430.

The offered MSP series magnetic cores made of thin (25 um) Co-based amorphous ribbon provide small size and excellent characteistics of pulse transformers and chokes for all ISDN interfaces: S2m, S0, Up0, Uk0; are optimized for xDSL technologies and data link chokes.

 

CONFIGURATION:

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

 

ADVANTAGES:

  • High permeability with possibility of DC bias
  • Small size
  • High impedance in a wide frequency range
  • Comply with ITU-T I.430
  • Low attenuation in a wide frequency range
  • Insulation requirements comply with IEC 950, EN 60950, BS 601
  • Low loss
  • Decrease in power consumption of communication equipment

 

APPLICATION:

S0 interface:

  • Connection between network temination (NT) and terminal equipment (TE)
  • Connection between PABX and TE

Up0/Uk0 interface:

  • Connection between local central office and network termination (NT1)

S2m interface:

  • Connection between local central ofice and PABX

 

ENTRY EXAMPLE:

MSP-10S-32, where:

  • MS – MSTATOR;
  • P – application (telecommunications);
  • 10 – outer diameter in mm;
  • S – cross section reference code;
  • 32 – designing code.

 

DIMENSIONS AND KEY FEATURES:

  

TYPE

Dimensions in container (without a container)

(O.D. – I.D. - H)

mm

Mean line length

Lm, mm

Cross-section

Ac, mm2

Inductance ratio

ALo*

(mH/turn2)

Inductance ratio

          ALdc*

(mH/turn2)

Type application
Номин. Номин. Мin. Min.
MSP-10S-32 11,1-5,1-5,8 25,5 6,1 26,0 (a) - S2M
MSP-10B-30 11,1-5,3-7,6 25,5 8,2 20,7 (a) 14,1 (b) S0 (1mA)
MSP-10S-18 11,1-5,1-5,8 25,5 6,1 18,4 (a) 12,4 (c) S0 (3mA)
MSP-06A-12 6,8-3,0-4,1 15,0 3,8 9,8 (a) 6,9 (d) S0 (4mA)
MSP-10S-14 11,1-5,1-5,8 25,5 6,1 8,9 (a) 6,1 (e) S0 (5mA)
MSP-07A-08 7,5-3,0-4,2 15,9 5,2 - 0,6 (f) Upo, DSL
MSP-10S-03 11,1-5,1-5,8 25,5 6,1 - 0,315 (g) Uko, DSL
* - Min. value of initial inductivity ratio @ F=10 kHz, Urms=0,1V, T=25°C, ** - Min. value @ DC bias (Urms=0,1V, T=25°C,)
(а) - Idc = 0, F=10 kHz
(b) - Idc x N = 19 mA x turn, F = 20 kHz
(c) - Idc x N = 66 mA x turn, F = 20 kHz
(d) - Idc x N = 120 mA x turn, F = 20 kHz
(e) - Idc x N = 145 mA x turn, F = 20 kHz
(f) - Idc x N = 4500 mA x turn, F = 20 kHz
(g) - Idc x N = 10,2 A x turn, F = 20 kHz

* - Min. value of initial inductivity ratio @ F=10 kHz, Urms=0,1V, T=25°C, ** - Min. value @ DC bias (Urms=0,1V, T=25°C,); Type application Cross-section

Ac, mm2; Dimensions in container (without a container)

(O.D. – I.D. - H)

ADDITIONAL PARAMETERS AND CHARACTERISTICS: