NA5738-DL SMT Planar Transformer for TI UCC2897 (PMP7376 Design)
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NA5738-DL SMT Planar Transformer
for Texas Instruments UCC2897

  • Developed for TI UCC2897 Active Clamp (PMP7376 Reference Design)
  • Designed for 52 – 60 Vdc input; 12 V, 22 A output
  • 1500 Vrms, one minute isolation (hipot) from primary to secondary
  • RoHS-compliant  260°C compatible. Matte tin over nickel over brass terminations


Part number
Click to get parts
Turns Primary
±20% (µH)
max (µH)
DCR max (mOhms)3 Volt-time
product (typ)4
pri   sec  aux  pri sec aux
NA5738-DL 5 2 3 100 0.18 4.8 1.7 18 94.5 12 V, 22 A
1 Inductance is for the primary, measured on Agilent/HP 4284A at 200 kHz, 0.5 Vrms, 0 Adc.
2 Leakage Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc with secondary pins shorted.
3 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
4 Volt-time product is based on primary turns and 3000 gauss.
5 Output of the aux winding is 12 V.
6 Ambient temperature range: −40°C to +125°C
7 Storage temperature range: Component: −40°C to +125°C
Tray packaging: −40°C to +80°C
8 Maximum part temperature: 155°C (ambient + temp rise)
9 Resistance to soldering heat: Three reflows at >217°C for 40 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.

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Updated: April 16, 2018