Coilcraft CJ5143 Flyback Transformer for ON Semiconductor NCP5080
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SMT Flyback Transformer
for ON Semiconductor NCP5080

  • Smallest capacitor charging transformer:  6.2 × 6.8 mm footprint and 4.6 mm high
  • Developed for ON Semiconductor NCP5080 Photoflash Capacitor Charger
  • 2.7 – 5.5 V input; 350 V output
  • 1000 Vrms, one minute primary to secondary isolation
  • RoHS-compliant. 260°C compatible. Tin-silver over copper terminations


Part number1
Click to get parts
at 0A2
±10% (µH)
at Ipk3
min (µH)
DCR max (Ohms)4 Leakage
max (µH)
Pri : sec
turns ratio
Pri Sec
CJ5143-AL_ 15.0 13.5 1.0 25 0.3 1 : 15 1.2
1 When ordering, please specify termination and packaging codes: e.g. CJ5143-ALD
  Termination: L = RoHS compliant tin-silver over copper
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).


C = 7" machine-ready reel
EIA-481 embossed plastic tape (250 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 C instead.
D = 13" machine-ready reel
EIA-481 embossed plastic tape. Factory order only, not stocked (2000 parts per full reel).
2 Inductance is for the primary, measured at 1.0 kHz, 1.0 Vrms.
3 Ipk: Peak primary current drawn at minimum input voltage.
4 DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for the primary winding with the secondary winding shorted, measured at 100 kHz, 1 Vrms.
6 Ambient temperature range: −40°C to +125°C
7 Storage temperature range: Component:−40°C to +125°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.

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Updated: April 16, 2018