Flyback Transformers
for NSC LM5072 PD Interface

• Developed for NSC LM5072 PD Interface for 24 Watt PoE applications
• Specified by NSC for its POE+PHYTEREV-I/-E eval board
• Five different outputs to match a variety of applications
• 1500 Vrms isolation from primary and auxiliary to secondary
• 18 – 57 V input voltage
• 11 V, 20 mA auxiliary winding output
• Coilcraft's DA2257-AL,  DA2383-AL and FA2519-AL are also specified for LM5072
• RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations.

Photo    Pricing    Materials declaration  FA2677  FA2898  FA2899  FA2900  FA2901

PDF data sheet

SPECIFICATIONS

Dimensions    Schematic    Tape and reel specifications    3D models

FA2677-AL_	50	40.8	26	2.6	328	2.20	1 : 0.12	1 : 0.41	2.9	3.3 V, 7.5 A
FA2898-AL_	50	40.8	26	4.0	315	1.05	1 : 0.18	1 : 0.41	2.9	5 V, 5 A
FA2899-AL_	50	40.8	26	13	315	0.473	1 : 0.35	1 : 0.41	2.9	9 V, 2.8 A
FA2900-AL_	50	40.8	26	20	315	0.409	1 : 0.47	1 : 0.41	2.9	12 V, 2.1 A
FA2901-AL_	50	40.8	26	37	305	0.381	1 : 0.59	1 : 0.41	2.9	15 V, 1.7 A

1	When ordering, please specify packaging code: e.g. FA2677-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 250 kHz, 0.7 Vrms, 0 Adc
3	Ipk is peak primary current drawn at minimum input voltage.
4	DCR for the primary and the secondary is with the windings connected in parallel.
5	Leakage inductance measured on the primary windings with all secondary pins shorted.
6	Turns ratios are with the primary windings and secondary windings connected in parallel.
7	Output is with the secondary windings connected in parallel.
8	Ambient temperature range:	–40°C to +125°C
9	Storage temperature range:	Component: –40°C to +125°C T&R packaging: –40°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.