3D Model Datasheet

WA8478 Transformer

for Analog Devices ADP1031

Developed for use with isolated DC-DC regulator in Analog Devices ADP1031 isolated micropower management unit (PMU)

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Count	Unit price
1	$3.95
175	$3.39
700	$2.95
1400	$2.56
2800	$2.20
5000	$2.02

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

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

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Typical Application

Works with Analog Devices ADP1031

Input Voltage	Output	Power
4.5 V — 60 V	24 V , 0.02 A	0.5 W

Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 0.15 A (µH) 3	DCR max (Ω)		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 0.15 A (µH) 3	Pri	Sec	Leakage Inductance max (µH) 4	Pri : Sec	Isolation Voltage (Vrms) 5
WA8478-BE_	275	220	1.20	2.46	1.2	1 : 1	2250

Notes

When ordering, please specify packaging code: e.g.WA8478-BEC
Inductance is for the primary, measured on an Agilent/HP 4284 at 100 kHz, 0.1 Vrms, 0 Adc.
Minimum inductance is for the primary, measured at 100 KHz, 0.1 Vrms, 0.15 Adc.
Leakage inductance is for the primary with secondary winding shorted together.
Isolation (hipot) measured between windings for one minute.. Isolation (hipot) measured between windings for one minute.

Termination:

RoHS-compliant, halogen free. 260°C compatible. Tin-silver-copper (95.5/3.8/0.7) over tin over nickel over phos bronze.

Packaging:

C = 7″ machine ready reel. EIA-481 embossed plastic tape (175 parts per reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (750 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +165°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+165°C

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

See FIT/MTBF Calculations

Schematics

Physical characteristics

Tape and Reel specification

Parts per reel		Reel dimensions (mm)					Tape dimensions (mm)						Orientation
7" (178 mm)	13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
175	750	178/330	60/100	13	30,4	24,4	24	12	4	2	7,0	0,4

General specification

Core Material:

Ferrite

Weight:

0.76 g

Packaging:

175 per 7″; 750 per reel, 13″ reel Plastic tape: 24 mm wide, 0.40 mm thick, 12 mm pocket spacing, 7 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.

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WA8478 Transformer

for Analog Devices ADP1031

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning