Datasheet 3D Model

Flyback Transformer

for Texas Instruments LM5071

Developed for Texas Instruments LM5071PD Controller
Offers 84% efficiency as specified in Texas Instruments application note AN-1430
Designed to operate in continuous mode at 250 kHz with input voltage of 24 – 60 V
Industry standard EP13 surface mount package
Coilcraft's DA2257-AL and FA2519-AL are designed for the NSC LM5071 and LM5072
The FA2677-AL is specified by NSC for LM5072

Buy Now:

Count	Unit price
1	$2.62
175	$2.25
700	$1.96
1400	$1.53
2800	$1.32
5000	$1.19

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Typical Application

Works with Texas Instruments LM5071

Input Voltage	Output		Power	Fsw
Input Voltage	Sec	Aux	Power	Fsw
24 V — 60 V	3.3 V , 4 A	10 V , 0.05 A	13 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 1 A (µH)	DCR max 3			Leakage Inductance max (µH) 4	Turns Ratio	Isolation Voltage (Vrms) 5
Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 1 A (µH)	Pri (Ω)	Sec (mΩ)	Aux (mΩ)	Leakage Inductance max (µH) 4	Pri : Sec : Aux	Isolation Voltage (Vrms) 5
DA2383-ALD	127.0	114.3	0.255	12.000	310.000	1.25	1 : 0.167 : 0.5	1500

Notes

When ordering, please specify packaging code: e.g. DA2383-ALD
Inductance is for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc.
DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage inductance measured on the primary winding with all secondary pins shorted.
1500 Vrms, one minuteisolation from primary and aux 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 (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 +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 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	38,4	32,4	32	28	4	2	12,93	0,5

General specification

Core Material:

Ferrite

Weight:

5.97 g

Packaging:

175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 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.

Warehouses

Language settings

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Flyback Transformer

for Texas Instruments LM5071

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