N27 Datasheet, PDF (2/7 Pages) EPCOS – Ferrites and accessories

SIFERRIT materials
N27
Material properties
Preferred application
Power transformers
Material
N27
Base material
MnZn
Symbol Unit
Initial permeability
μ_i
(T = 25 °C)
2000
±25%
Flux density
B_S (25 °C) mT
(H = 1200 A/m, f = 10 kHz) B_S (100 °C) mT
Coercive field strength
(f = 10 kHz)
H_c (25 °C) A/m
H_c (100 °C) A/m
Optimum
kHz
frequency range
500
410
23
19
25 …
150
Hysteresis
η_B
10^–6/mT <1.5
material constant
Curie temperature
T_C
Mean value of α_F
at 25 … 55 °C
°C
>220
10^–6/K 3
Density (typical values)
kg/m³ 4800
Relative core losses
P_V
(typical values)
25 kHz, 200 mT, 100 °C
kW/m³ 155
100 kHz, 200 mT, 100 °C
kW/m³ 920
300 kHz, 100 mT, 100 °C
kW/m³ —
500 kHz, 50 mT, 100 °C
kW/m³ —
1 MHz, 50 mT, 100 °C
kW/m³ —
Resistivity
ρ
Ωm
3
Core shapes
P, PM, ETD, ER, E, U,
Toroid
Please read Cautions and warnings and
Important notes at the end of this document.
2 09/06