|
Material Characteristics FT87A-P |
|
Property |
Item |
Unit/
Symbol |
Permea-bilität |
Anfangs Perm. (10 kHz), Coated |
|
|
|
Initial Permeability@ B < 10 gauss |
|
µi |
2500
±25% |
--- |
|
|
|
Eff. Parameters |
|
Flux Density @ Field Strength |
Gauss
@ 1194 A/m, 15 oe mT |
B
H |
4700
470
|
Mittlere Feld-
Linienlänge
Ae mm² |
Oberfläche
Le mm
|
Volumen
Ve mm³ |
|
26.2 cm² |
54.1 |
1417 cm³ |
|
WaAC |
0.39 |
|
|
INDUCTANCE |
|
AL value (nH/T²) |
Test conditions |
|
1510 ± 25% |
10 kHz |
0.5 mT (For N = 5, use 1 mA), 25°C |
|
CORE LOSSES |
|
PL max |
Production lot limit Max avg |
Test conditions |
|
174 mW (123 mW/cm³)
|
159 mW (112mW/cm³)
|
100 kHz, 100 mT, 100°C |
|
Curie Temperature |
°C |
Tc |
210°C |
|
|
Resistivity |
Ohm-cm |
Ρ
|
|
|
Electrical Specifications |
|
Bestellnr. |
Kern-Material |
Item |
Unit/Symbol |
Condition |
Value
(nH/T²)
|
AL-Toleranz |
|
|
FT87A-P |
Ferrit Toroid |
AL |
nH/N² |
@ 10 KHz |
538
|
±25% |
|
MnZnFe |
10 kHz |
|
|
Initial Perm (10 kHz) |
2500 ± 25% |
|
Saturation Flux Density (4,700 G at 15 Oe, 25°C) |
470 mT, 11.9 A•T/cm |
|
Curie Temperature |
210°C |
|
Maximum Usable Frequency (50% roll-off) |
≤1.8 MHz |
|
Remanence (1.600 G, 25°C) |
160 mT |
|
Resistivity |
5 Ω-m |
|
Density |
4.8 g/cm3 |
|
Dimensional Tolerances |
|
Case |
In |
Toleranz |
mm |
Toleranz |
Weight |
Gewicht |
|
B (Outer Diameter)/mm |
--- |
----- |
22.1 |
22.48 Max |
13.50 |
13.50 |
|
A (Inner Diameter)/mm |
--- |
----- |
13.7 |
14.07 Min |
--- |
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