B78417A1939A003 Datasheet, PDF (3/5 Pages) EPCOS – ADSL interface transformer

Transformers for information technology (xDSL)
ADSL interface, CO
B78417A1939A003
EPX 7/9
Technical data and measuring conditions
Main inductance L (1-4)
Stray inductance L_stray (1-4)
Interwinding capacitance C_i (1, 4-8, 6)
Resistance R_{DC (Line)}; R_{DC (IC)}
Test voltage V_test
Longitudinal balance
Total harmonic distortion THD
Operating temperature range
Weight
10 kHz, 100 mV, short 2-3
100 kHz, 100 mV, short 5-6-7-8, 3-2
100 kHz, 100 mV, short 2-3, 5-7
R_{DC (Line)}: short 2-3; R_{DC (IC)}: short 5-7
50 Hz, 1 s; N₁, N₂ against N₃, N₄
2.2 MHz
5 V, 25 kHz
–40 °C … +85 °C
Approx. 2.5 g
Characteristics and ordering code
(electrical specifications at 25 °C)
Ordering code
Type/Core
N₁ : N₂ : N₃ : N₄
L
L_stray (typ.)
C_i (typ.)
R_{DC (Line)} (typ.)
R_{DC (IC)} (typ.)
V_test
Longitudinal balance (typ.)
THD (typ.)
B78417A1939A003
EPX 7/9
0.9 : 0.9 : 1 : 1
1.05 ±12%
8.5 ±25%
40
1.45
1.9
1875
45
80
mH
μH
pF
Ω
Ω
V AC
dB
dB
Please read Cautions and warnings and
Important notes at the end of this document.
3 10/08