Datasheet 3D Model

JA4456-DL Flyback Transformers

for Texas Instruments TPS2375x

Developed for TI TPS2375x PoE Interface and DC/DC Converters

Buy Now:

Count	Unit price
1	$5.49
175	$5.11
700	$4.45
1400	$3.47
2800	$2.99
5000	$2.71

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

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Typical Application

Works with Texas Instruments TPS23752

Input Voltage	Output 1		Power	Fsw
Input Voltage	Sec	Bias	Power	Fsw
36 V — 57 V	5 V , 5 A	12 V , 0.02 A	25 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	DCR max 5			Leakage Inductance max (µH) 6	Turns Ratio 7	Capacitance max (pF)	Isolation Voltage (Vrms) 8
Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Pri (Ω)	Sec (mΩ)	Bias (mΩ)	Leakage Inductance max (µH) 6	Pri : Sec : Bias	Capacitance max (pF)	Isolation Voltage (Vrms) 8
JA4456-DLD	70	0.070	4.3	310	0.615	1 : 0.182 : 0.409	158	1500

Notes

Output of the secondary is with all windings connected in parallel. Bias winding output is 12 V, 20 mA.
When ordering, please specify termination and packaging codes: JA4456-DLD.
Inductance is for the primary, measured at 250 kHz, 0.5 Vrms.
Peak primary current drawn at minimum input voltage.
DCR for the primary and secondary are with the windings connected in parallel.
Leakage inductance is for the primary windings with all the secondary windings shorted.
Turns ratios are with the primary windings and secondary windings connected in parallel.
1500 Vrms, one minute isolation (hipot) primary and bias to secondary; 500 Vrms isolation primary to bias; 750 Vrms isolation all pins to the core.

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

Primary windings and 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)						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	12,0	0,5

General specification

Core Material:

Ferrite

Weight:

11.7 g

Packaging:

175 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick, 32 mm pocket spacing, 12.0 mm pocket depth PCB washing Tested to MIL-STD-202 Method

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. See Doc787_PCB_Washing.pdf.

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JA4456-DL Flyback Transformers

for Texas Instruments TPS2375x

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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