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B0392-AL Planar Transformer

for Texas Instruments UCC3580

RoHS compliant
  • Specially developed for use with the Texas Instruments UCC3580 PWM Controllers
  • Low profile, high efficiency planar transformer
  • Planar output choke inductor
Buy Now:
Count Unit price
1 $11.21
1000 $8.95
5000 $7.03

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

. in stock, ready to ship today.
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Typical Application

Works with Texas Instruments UCC3580

Output Power Fsw
3.3 V , 30 A 100 W 300 kHz


Electrical specifications at 25°C.

Planar Transformer

Part number 1 Inductance
min (µH) 2
DCR max (mΩ) 3 Leakage
max (µH) 4
Turns Ratio Isolation
Voltage (Vrms)
Pri Sec Pri : Sec
B0392-AL_ 65 13.5 0.4 0.22 1 : 0.167 1500

Planar Output Inductor

Part number 5 Inductance (µH) 6 Rated current (Adc) DCR max (Ω) 3 Isolation
Voltage (V) 8
Isat (A) 9 Irms (A) 10
Main Aux
B0434-AL_   2.0 30.0 0.0019 1.5 1100 38.0 36.0
  1. When ordering, please specify packaging code: e.g. B0392-ALD
  2. Inductance measured on an Agilent/HP 4284 between pins 1 and 3 at 250 kHz, 0.1 Vrms, 0 Adc.
  3. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage inductance measured between pins 1 and 3 at 100 kHz, 0.1 Vrms, 0 Adc with secondary pins shorted.
  5. When ordering, please specify packaging code: e.g. B0434-ALD
  6. Inductance measured on an Agilent/HP 4284 between pins 3 and 4 at 250 kHz, 0.1 Vrms.
  7. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  8. Isolation measured from pins 1 to 3.
  9. Isat: DC current at which inductance drops 10% (typ) from its value without current. Details
  10. Irms: Current that causes a 40°C rise from 25°C ambient. Details


  • RoHS-compliant. 260°C compatible. Matte tin over nickel over brass terminations.


  • D = 13" machine-ready reel
    EIA 481 embossed plastic tape (200 parts per full reel).
  • B = Less than full reel
    In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead.
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):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Performance curves

Inductance vs Current (B0434-A Output Inductor)

Inductance vs Frequency (B0434-A Output Inductor)


         B0392-AL                                      B0434-AL
Planar Transformer                      Planar Output Inductor              

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 part_or_v.gif
200 330 100 13 50,4 44,4 44 32 4 2 9,4 0,37

General specification

Core Material:
11.1 g
200 per 13″ reel Plastic tape: 44 mm wide, 0.37 mm thick, 32 mm pocket spacing, 9.4 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.