Coilcraft Planar Transformer for Maxim MAX5069A
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Planar Transformer
For Maxim MAX5069A

  • Developed for Maxim MAX5069A PWM Controller
  • For push-pull, half-bridge and full-bridge topologies
  • Ideal for use in high-current power supply applications
  • 1500 Vdc isolation - primary to secondary windings
  • RoHS-compliant. 260°C compatible. Matte tin over nickel over brass terminations.
  • Designed using Coilcraft Planar Prototyping Kit C356.


Part number1
Click to get parts
range (V)
nom (V)
(A peak)
L min2
L max3
DCR max4
Turns ratio5
pri : sec pri : aux
B0860-CL_ 180 36 – 72 12 15 187.0 0.25 Pri: 38.0
Sec: 4.0
Aux: 120.0
: 0.4 : 0.3
1 When ordering, please specify packaging code: e.g. B0860-CLD
  Packaging: 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.
2 Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 250 kHz, 0.1 Vrms, 0 Adc
3 Leakage inductance measure between pins 2 and 4 at 250 kHz, 0.1 Vrms, 0 Adc with pins 6, 8 and 10 shorted.
4 DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Turns ratio is with the primary windings and the secondary windings connected in series.
6 Ambient temperature range: –40°C to +85°C
7 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
8 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
9 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

Your comments and suggestions are welcome. Contact [email protected]
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Updated: April 16, 2018