Site Settings

Language settings
Currency settings
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

WA8478 Transformer

for Analog Devices ADP1031

RoHS compliant halogen free AEC-Q flag
  • Developed for use with isolated DC-DC regulator in Analog Devices ADP1031 isolated micropower management unit (PMU)

Buy Now:
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.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Analog Devices ADP1031

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


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
at 0A (µH) 2
(Tolerance: ±10%)
min at   0.15 A (µH) 3
DCR max (Ω) Leakage
max (µH) 4
Turns Ratio Isolation
Voltage (Vrms) 5
Pri Sec Pri : Sec
WA8478-BE_ 275 220 1.20 2.46 1.2 1 : 1 2250
  1. When ordering, please specify packaging code: e.g.WA8478-BEC
  2. Inductance is for the primary, measured on an Agilent/HP 4284 at 100 kHz, 0.1 Vrms, 0 Adc.
  3. Minimum inductance is for the primary, measured at 100 KHz, 0.1 Vrms, 0.15 Adc.
  4. Leakage inductance is for the primary with secondary winding shorted together.
  5. Isolation (hipot) measured between windings for one minute.. Isolation (hipot) measured between windings for one minute.


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


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



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 part_or_c.gif
175 750 178/330 60/100 13 30,4 24,4 24 12 4 2 7,0 0,4

General specification

Core Material:
0.76 g
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


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.