|
Material Characteristics FT87A-L |
|
Property |
Item |
Unit/
Symbol |
Permea-bilität |
Initial Perm (10 kHz), Coated |
|
|
|
Initial Permeability@ B < 10 gauss |
|
µi |
900
±25% |
750
±25% |
----- |
---- |
------ |
|
Flux Density @ Field Strength |
Gauss
@ 1194 A/m, 15 oe mT |
B
H |
4200
420
|
Mittlere Feld-
Linienlänge
|
Oberfläche
|
Volumen
|
|
WaAC |
0.39 |
54.1 cm |
26.2 cm² |
1417 cm³ |
|
INDUCTANCE |
|
AL value (nH/T²) |
Test conditions |
|
547± 25% |
10 kHz, 0.5 mT (For N = 3, use 4.62 mA), 25°C |
|
CORE LOSSES |
|
PL max |
Production lot limit
Max avg
|
Test conditions |
|
269 mW (192.5 mW/cm³) |
244 mW (175 mW/cm³)
|
1 MHz, 30 mT, 100°C |
|
460 mW (330 mW/cm³) |
419 mW (300 mW/cm³) |
3 MHz, 10 mT, 100°C |
|
Curie Temperature |
°C |
Tc |
300°C |
|
|
Resistivity |
Ohm-cm |
Ρ
|
|
|
Electrical Specifications |
|
Bestellnr. |
Kern-Material |
Item |
Unit/Symbol |
Condition |
Value
(nH/T²)
|
AL-Toleranz |
|
|
FT87A-L |
Ferrit Toroid |
AL |
nH/N² |
@ 10 KHz |
547
|
±25% |
|
MnZnFe |
10 kHz |
|
|
Initial Perm (10 kHz) |
3.000 ± 20% |
|
Saturation Flux Density (4,700 G at 15 Oe, 25°C) |
470 mT, 11.9 A•T/cm |
|
Curie Temperature |
300°C |
|
Maximum Usable Frequency (50% roll-off) |
≤3 MHz |
|
Remanence (1,500 G, 25°C) |
150 mT |
|
Resistivity |
10 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 |
--- |
--- |
|
H (Height)/mm |
---- |
---- |
6.35 |
6.53 Max |
--- |
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