 
SMT PoE Transformers
for
Silicon Laboratories Si3400 & Si3401
- Specified by Silicon Laboratories for Si3400 & Si3401 PD Controllers
- Designed for 15 Watt, IEEE 802.3af-compliant PoE applications
- 36 – 72 V input. Versions for 12 V, 5 V and 3.3 V output
- 200 kHz operating frequency
- Power inductor DO5010H-333 also specified for Si3400 circuit.
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel
over phos bronze terminations.
 Photo  Pricing  Materials declaration FA2805
FA2924 FA2925
PDF data sheet
SPECIFICATIONS
 Dimensions  Schematic
Tape and reel specifications
 |
|
FA2924-AL_ |
40.0 |
36.0 |
0.100 |
0.025 |
0.666 |
13 : 4 |
2.0 |
3.3 V, 4.5 A |
|
FA2805-CL_ |
40.0 |
36.0 |
0.108 |
0.040 |
0.621 |
5 : 2 |
2.0 |
5.0 V, 3.0 A |
|
FA2925-AL_ |
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: e.g. FA2925-ALD |
|
Packaging: |
D = 13" reel, machine-ready
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 is measured across the primary with all other windings shorted. |
| 6 |
Turns ratio is with
the secondary windings connected in parallel. |
| 7 |
Output is with the secondary windings connected in parallel. |
| 8 |
Ambient temperature range: |
–40°C to +85°C |
| 9 |
Storage temperature range: |
Component: –40°C to +85°C
Packaging: –55°C to +80°C |
| 10 |
Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. |
| 11 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
|
|
|