3D Model Datasheet

FA2706 Flyback Transformer

for STMicroelectronic PM8800

Designed for ST PM8800 PoE Powered Device Controller

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Part number

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Count	Unit price
1	$4.93
200	$4.23
400	$3.68
1000	$2.87
2400	$2.46
5000	$2.25

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

Packaging

D = 13" machine-ready reel

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Typical Application

Works with STMicroelectronics PM8800

Part number	Input Voltage	Output 1			Power	Fsw
Part number	Input Voltage	Sec	Drive	Aux	Power	Fsw
FA2706-BL_	30 V — 60 V	3.3 V , 6 A	5.5 V	10 V , 0.02 A	20 W	250 kHz
FA2707-BL_	30 V — 60 V	5 V , 4 A	5.5 V	10 V , 0.02 A	20 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 3 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 3 A (µH)	Pri	Sec	Drive	Aux	Leakage Inductance max (µH) 5	Pri : Sec : Drive : Aux	Isolation Voltage (Vrms) 7
FA2706-BL_	77.8	70.0	0.155	0.008	0.215	0.382	1.53	1 : 0.147 : 0.235 : 0.412	1500
FA2707-BL_	77.8	70.0	0.155	0.019	0.210	0.380	1.10	1 : 0.206 : 0.235 : 0.412	1500

Notes

Output of the secondary is with the windings connected in parallel. Aux winding output is 10 V; drive winding output is 5.5 V.
When ordering, please specify packaging code: e.g. FA2707-BLD
Inductance is for the primary, measured at 250 kHz, 0.2 Vrms.
DCR for the primary and the secondary is with windings connected in parallel.
Leakage inductance is for the primary, measured with the secondary and drive windings shorted.
Turns ratio is with the primary and the secondary windings connected in parallel.
1500 Vrms, one minute isolation from primary and auxiliary 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 (200 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

Primary and secondary windings 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
200	330	100	13	50,4	44,4	44	24	4	2	11,5	0,4

General specification

Core Material:

Ferrite

Weight:

8.4 – 8.6 g

Packaging:

200 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 24 mm pocket spacing, 11.5 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 to MIL-STD-202 Method 215 plus an additional aqueous wash. More Info.

Warehouses

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FA2706 Flyback Transformer

for STMicroelectronic PM8800

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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Warning