SMT PoE Transformers
for 3 Watt Applications

• Developed for National Semiconductor LM5070 PoE Interface
• IEEE 802.3af compliant for 3 W PoE applications
• Industry standard EP7 surface mount package
• Three different output current and voltages
• Designed to operate in continuous mode at 250 kHz with input voltage of 36 – 72 Vdc
• 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   C1590-AL C1591-AL C1592-AL

PDF data sheet

SPECIFICATIONS

Dimensions    Schematic    Tape and reel specifications    3D model

---

C1590-AL_	310	279	1.02	2.01	0.066	4.75	1 : 0.19	1 : 0.70	0.3	3.3 V, 0.91 A
C1591-AL_	310	279	1.02	2.01	0.118	4.50	1 : 0.28	1 : 0.70	0.3	5.0 V, 0.6 A
C1592-AL_	310	279	1.04	2.01	0.700	4.25	1 : 0.70	1 : 0.70	0.3	12 V, 0.25 A

1	When ordering, please specify packaging code: e.g. C1592-ALD
	Packaging:	D = 13" reel, machine-ready  EIA-481 embossed plastic tape (350 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 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.