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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.

Flyback Transformers

Document 608

Document 608 Revised 03/14/12

For Silicon Laboratories

Si3402 PD Controllers

Inductance

Inductance

Leakage

Part

Power

(W)

±10% (µH)

min (µH)

pri

sec

max (µH)

pri : sec

(A)

FA2924-AL_

15

40.0

36.0

0.100

0.025

0.666

1 : 0.3

2.0

3.3 V, 4.5 A

FA2805-CL_

15

40.0

36.0

0.108

0.040

0.621

1 : 0.4

2.0

5.0 V, 3.0 A

FA2925-AL_

15

40.0

36.0

0.100

0.155

0.566

1 : 1

2.0

12.0 V, 1.25 A

1. When ordering, please specify

packaging code:

FA2925-ALD

Packaging: D = 13

″ machine-ready reel. EIA-481 embossed plastic tape (175 parts 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 200 kHz, 0.2 Vrms, 0 Adc.

3.

Ipk is peak primary current drawn at minimum input voltage.

4. DCR for the secondary is per winding.

5. Leakage inductance measured between pins 1 and 2 with all secondary pins shorted.

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

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.

0.500

12,70

0.530

13,46

0.039

1,00

0.512

13,00

0.699

17,75

max

0.028

0,70

0.098

2,50

max

max

5

6

1

10

0.004 /0,10

Dot above pin1

0.080

2,03

1

0.590

14,99

0.050

1,27

0.098

2,50

Recommended

Land Pattern

Secondary windings to be con-

nected in parallel on PC board

7

8

9

10

Pri

Sec

1

2

Core material Ferrite

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

Other terminations available at additional cost.

Weight 6.57 – 6.71 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 175 per 13

″ reel Plastic tape: 32 mm wide, 0.5 mm thick,

28 mm pocket spacing, 12.93 mm pocket depth

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

see Doc787_PCB_Washing.pdf

• Designed for Power over Ethernet PD controllers for applica-

tions up to 15 Watts.

• Operates in continuous conduction mode with 36 – 57 V input

• 1500Vrms, one minuteisolationbetweenprimary and secondary

Dimensions are in

inches

mm