SMT PoE Transformers
for 7 Watt Applications

• Developed for National Semiconductor LM5070 PoE Interface
• IEEE 802.3af compliant for 7 W PoE applications
• Industry standard EP10 surface mount package
• Three different output current and voltages
• 250 kHz switching frequency
• 1500 Vrms isolation from primary and bias to secondary
• RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations

Photo    Pricing    Materials declaration C1587-AL C1588-AL C1589-AL 

PDF data sheet

SPECIFICATIONS

Dimensions    Schematic    Tape and reel specifications

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C1587-AL_	155.0	139.5	0.414	0.822	0.036	4.00	1 : 0.19	1 : 0.667	0.65	3.3 V, 2.12 A
C1588-AL_	155.0	139.5	0.414	0.822	0.060	3.60	1 : 0.262	1 : 0.667	0.65	5.0 V, 1.4 A
C1589-AL_	155.0	139.5	0.414	0.822	0.343	3.25	1 : 0.667	1 : 0.667	0.65	12 V, 0.6 A

1	When ordering, please specify packaging code: e.g. C1589-ALD
	Packaging:	D = 13" reel, machine-ready  EIA-481 embossed plastic tape (200 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 10 kHz, 0.1 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 between pins 3 and 4 with all other windings shorted.
6	Turns ratio is with the secondary windings connected in parallel.
7	Output of the secondary is with the windings connected in parallel. Bias winding output is 12 V, 20 mA.
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.