Datasheet 3D Models

7 Watt PoE Transformers

for TI LM5070

Developed for Texas Instruments LM5070 PoE Interface
IEEE 802.3af compliant for 7 W PoE applications
Industry standard EP10 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

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Count	Unit price
1	$3.32
250	$2.86
500	$2.49
1000	$1.93
2500	$1.67
5000	$1.53

For high volume or non-stock items, request a quote.

Packaging

D = 13" machine-ready reel

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Typical Application

Works with Texas Instruments LM5070

Part number	Input Voltage	Output 1		Power	Fsw
Part number	Input Voltage	Sec	Bias	Power	Fsw
C1587-AL_	36 V — 72 V	3.3 V , 2.12 A	12 V , 0.02 A	7 W	250 kHz
C1588-AL_	36 V — 72 V	5 V , 1.4 A	12 V , 0.02 A	7 W	250 kHz
C1589-AL_	36 V — 72 V	12 V , 0.6 A	12 V , 0.02 A	7 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 0.65 A (µH)	DCR max (Ω) 4			Leakage Inductance max (µH) 5	Turns Ratio 6	Isolation Voltage (Vrms) 7
Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 0.65 A (µH)	Pri	Sec	Bias	Leakage Inductance max (µH) 5	Pri : Sec : Bias	Isolation Voltage (Vrms) 7
C1587-AL_	155.0	139.5	0.414	0.036	0.822	4.0	1 : 0.19 : 0.667	1500
C1588-AL_	155.0	139.5	0.414	0.060	0.822	3.6	1 : 0.262 : 0.667	1500
C1589-AL_	155.0	139.5	0.414	0.343	0.822	3.3	1 : 0.667 : 0.667	1500

Notes

Output of the secondary is with the windings connected in parallel. Bias winding output is 12 V, 20 mA.
When ordering, please specify packaging code: e.g. C1589-ALD
Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
DCR for the secondary is per winding.
Leakage inductance measured between pins 3 and 4 with all other pins shorted.
Turns ratio is with the secondary windings connected in parallel.
1500 Vrms isolation from primary and bias to secondary.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +85°C
Tape and reel packaging: –40°C to +80°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Secondary windings to be connected in parallel on PC board

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
200 (C1588/1589-AL)	330	100	13	38,4	32,4	32	24	4	2	11,2	0,5
250 (C1587-AL)	330	100	13	38,4	32,4	32	20	4	2	11,2	0,5

General specification

Core Material:

Ferrite

Weight:

3.85 g

Packaging:

C1587-AL : 250 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth
C1588/C1589-AL : 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested with pure water or alcohol only. More info.

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7 Watt PoE Transformers

for TI LM5070

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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