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B78476A8246A003

P1-P3P4-P6
Magnetics modules for LAN applications
10/100 Base-T magnetics module
Series/Type: B78476A8246A003
Date: March 2015
© EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Features
Ferrite toroid, case and potting (UL 94 V-0)
Compliant with IPC/JEDEC J-STD-020D
Compliant with IEEE 802.3af
RoHS-compatible
Marking
EPCOS, middle block of ordering code, date code
Delivery mode and packing unit
44-mm blister tape,
330-mm ∅ reel (cardboard packaging)
Packing unit: 300 pcs./reel
Dimensional drawing
Layout recommendation
Dimensions in mm [inch]
Values without tolerances are nominal values for reference.
10/100 Base-T magnetics module B78476A8246A003
Quad port, power over ethernet
Page 2 of 6Please read Cautions and warnings and
Important notes at the end of this document.
Pinning
Characteristics and ordering code
(electrical specifications at +25 °C)
Ordering code B78476A8246A003
Turns ratio (primary : secondary) 1CT : 1CT ±3%
Inductance L
350 µH min. 100 kHz, 100 mV, 8 mA DC bias
Voltage test V
test
1500 V AC 50 Hz, 1 min
Insertion loss
1.1 dB max. 0.1 MHz ... 100 MHz
Return loss
16 dB min.
14 dB min.
13 dB min.
12 dB min.
1 MHz ... 30 MHz
40 MHz
50 MHz
60 MHz ... 80 MHz
Crosstalk
45 dB min.
40 dB min.
35 dB min.
30 MHz
60 MHz
100 MHz
Differential to common-mode
rejection (DCMR)
43 dB min.
37 dB min.
33 dB min.
30 MHz
60 MHz
100 MHz
Operating temperature range
0 °C ... +70 °C
Weight
Approx. 3.2 g
10/100 Base-T magnetics module B78476A8246A003
Quad port, power over ethernet
Page 3 of 6Please read Cautions and warnings and
Important notes at the end of this document.
P1-P3P4-P6

B78476A8246A003

Mfr. #:
Buy B78476A8246A003
Manufacturer:
EPCOS / TDK
Description:
Audio Transformers / Signal Transformers 10/100 BASE-T 0C-70C 4-PORT POE
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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