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© Coilcraft Inc. 2013

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specification subject to change without notice.

Please check web site for latest information.

PoE Transformer

Document 379-1

Document 379-1 Revised 05/18/12

1. When ordering, please specify a

packaging code:

B0863-BLD

Packaging: D = 13

″ machine ready reel. EIA-481 embossed plastic tape (200 per full reel).

B = Less than full reel. In tape, but not machine ready. To have a leader and trailer

added ($25 charge), use code letter D instead.

2. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.

3. DCR for the secondary is measured with the windings connected in parallel.

4. Leakage inductance is for the primary and is measured with all other windings shorted.

5. Turns ratio is with the secondary windings connected in parallel.

6. Isolation is measured from the primary, reset and bias windings to the secondary and drive windings.

7. Output is with the secondary windings connected in parallel.

8. Electrical specifications at 25°C.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Leakage

Input

Part

voltage

min (µH)

(Ohms)

max (µH)

range (V)

B0863-BL_

165

0.061 (pri)

0.75

28 – 60

pri

:sec 1:0.29

1500 Vrms

3.3 V, 4 A

1.10 (reset)

pri

:reset 1:1

1.29 (bias)

pri

:drive 1:0.24

0.020 (drive)

pri

:bias 1:1.3

0.008 (sec)

For Maxim MAX5941B

PoE Interface/PWM Controller

7

1

2

5

3

4

6

8

Primary

Drive

Reset

Bias

Secondary

12

9

10

11

Secondary windings to be connected in

parallel on PC board.

Core material Ferrite

Terminations RoHS tin-silver over tin over nickel over phos bronze.

Other terminations available at additional cost.

Weight 5.6 g

Ambient temperature –40°C to +85°C

Storage temperature Component: –40°C to +85°C.

Tape and reel packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Packaging 200 per 13

″ reel Plastic tape: 44 mm wide,

0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth

PCB washing Tested with pure water or alcohol only. For other solvents,

see Doc787_PCB_Washing.pdf.

• Designed for forward topology

• Operates at 275 kHz, at a 50% duty cycle