3D Model Datasheet

POE300 Flyback Transformers

for PoE Plus Applications

Developed for flyback applications up to 30 Watts.
Designed to meet IEEE 802.3at-2009 standard.
Operates with 36 – 72 V input at a 250 kHz switching frequency.
UL Certified per File E219588
Samples of all values are available in Coilcraft Designer's Kit C398

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Part number

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Count	Unit price
1	$3.98
175	$3.66
700	$3.37
1400	$2.82
2800	$2.55
5000	$2.33

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

Termination

L = Tin-silver over tin over nickel

Packaging

D = 13" machine-ready reel

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Part number

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Designer's Kit:

Kit	Values	Price
C398	5 (3 of each)	$50.00

Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Power (W)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 2.6 A (µH) 3	DCR max (Ω) 4			Leakage Inductance max (µH) 5	Turns Ratio 6	Isolation Voltage (Vrms) 7	Secondary Output (V, A) 8
Part number 1 (Hover for schematics)	Power (W)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 2.6 A (µH) 3	Pri	Sec	Aux	Leakage Inductance max (µH) 5	Pri : Sec : Aux	Isolation Voltage (Vrms) 7	Secondary Output (V, A) 8
POE300F-33L_	30	42.0	37.8	0.070	0.002	0.220	3.000	1 : 0.09 : 0.33	1500	3.3 V , 9 A
POE300F-50L_	30	42.0	37.8	0.069	0.005	0.225	1.600	1 : 0.14 : 0.33	1500	5 V , 6 A
POE300F-12L_	30	42.0	37.8	0.061	0.015	0.195	0.545	1 : 0.33 : 0.33	1500	12 V , 2.5 A
POE300F-19L_	30	42.0	37.8	0.060	0.037	0.195	0.430	1 : 0.56 : 0.33	1500	19.5 V , 1.5 A
POE300F-24L_	30	42.0	37.8	0.060	0.055	0.195	0.310	1 : 0.67 : 0.33	1500	24 V , 1.25 A

Notes

When ordering, please specify packaging code: e.g. POE300F-24LD
Inductance is for the primary, measured at 250 kHz, 0.7 Vrms, 0 Adc.
Ipk is the peak primary current drawn at minimum input voltage.
DCR is with the windings connected in parallel, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage inductance is for the primary with the secondary windings shorted.
Turns ratio is with the primary and the secondary windings connected in parallel.
Isolation: 1500 Vrms primary to secondary; 500 Vrms primary to auxiliary.
Output is with the secondary windings connected in parallel. Output of the auxiliary winding is 12 V.

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 (175 parts per full reel). 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 +125°C

Storage temperature range:

Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C

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

See FIT/MTBF Calculations

Schematics

The primary windings and the
secondary windings are to be
connected in parallel on the PC board.

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
175	330	100	13	50,4	44,4	44	32	4	2	11,9	0,4

General specification

Core Material:

Ferrite

Weight:

11.9 g

Packaging:

175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 mm pocket depth

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POE300 Flyback Transformers

for PoE Plus Applications

Selected configuration not available

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

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Warning