Coilcraft Power Factor Controller Transformers for ON Semiconductor MC33261 and MC34261
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Power Factor Controller Transformers
for ON Semi MC33261 and MC34261

  • Designed for use with ON Semiconductor MC33261 and MC34261 power factor controllers
  • Built using standard materials for lowest cost
  • RoHS-compliant. Tin-silver over tin over copper terminations
  • Custom transformers available for specific combinations of output power and input voltage


Part number
Click to get parts
Max output
power (W)
voltage (V)
DCR max1
N2880-AL 175 110/220
960/780 pins 2–52 0.100 pins 2–5
0.017 pins 12–7
N2881-AL 80 110 350/290 pins 1–53 0.170 pins 1–5
0.019 pins 10–6
1 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
2 Tested at 15.75 kHz, 1 Vrms
3 Tested at 15.75 kHz, 0.2 Vrms
4 Ambient temperature range: −40°C to +85°C
5 Storage temperature range: Component: −40°C to +85°C
Packaging trays: −40°C to +80°C
6 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