N87 Datasheet, PDF (2/7 Pages) EPCOS – Ferrites and accessories

SIFERRIT materials
N87
Material properties
Preferred application
Power transformers
Material
N87
Base material
MnZn
Symbol Unit
Initial permeability
μ_i
(T = 25 °C)
2200
±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)
Optimum frequency range
kHz
490
390
21
13
25 …
500
Hysteresis
η_B
10^–6/mT <1.0
material constant
Curie temperature
T_C
Mean value of α_F
at 25 … 55 °C
°C
>210
10^–6/K 4
Density (typical values)
kg/m³ 4850
Relative core losses
P_V
(typical values)
25 kHz, 200 mT, 100 °C
kW/m³ 57
100 kHz, 200 mT, 100 °C
kW/m³ 375
300 kHz, 100 mT, 100 °C
kW/m³ 390
500 kHz, 50 mT, 100 °C
kW/m³ 215
Resistivity
ρ
Ωm
10
Core shapes
RM, P, PM, ETD, EFD, E,
ER, EP, EQ, ELP, U, Toroid
Please read Cautions and warnings and
Important notes at the end of this document.
2 09/06