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© 2007 Fairchild Semiconductor Page 8 of 17 Rev 1.1 April 2007
www.fairchildsemi.com
3.2 Transformer
3.3 Bill of Materials
Sch Ref Vendor Part Number Description
BD1 Fairchild DF10S 1.5A, 1000 V Bridge
C1 NIC Components or Equivalent NPX104M275VX2M 0.1µF, X2 cap
C2 NIC Components NREH470M450V18X36F 47µF, 450V
UCC ESMH451ESN470MN25S 47µF, 450V
C3 TDK C4520X7R3A102KT 1000 pF, 1kV, SMD
C4 NIC Components or Equivalent NACK470M50V6.3X8TR 47µF, 50V, SMD
C5 NIC Components or Equivalent NMC0603X7R104K50TRP 0.1µF, 50V, 0603
C6 NIC Components or Equivalent NMC0603X7R103K50TRP 0.01µF, 50V, 0603
C7 NIC Components or Equivalent NMC0603X7R104K50TRP 0.1µF, 50V, 0603
C8 NIC Components or Equivalent NMC0603X7R105K16TRP 1.0µF, 16V, 0603
C9 NIC Components or Equivalent NMC0603NPO182F25TRP 1800 pF, 25V, 0603, NPO
C10 NIC Components or Equivalent NMC0603X7R471K50TRP 470 pF, 50V, 0603
C11 NIC Components or Equivalent NRSJ102M16V10X16TB 1000µF, 16V, Leaded
C12 NIC Components or Equivalent NACK470M50V6.3X8TR 47µF, 50V, SMD
C13 Panasonic ECK-NVS222ME 2200pF, Y-rated cap
C14 Prov. for 0805
C15 TDK C4520CH3F101K 100 pF, 3kV, SMD
1/2 Primary - 36 T
Secondary - 10T
1/2 Primary - 36 T
Vcc 25 T
1
2
3
1/2 Pri - 36 T
1/2 Pri - 36 T
Vcc - 25 T
Output - 10 T
Core = EFD20
Bobbin = 10 pin; SMD; Horizontal
4
5
6
8
Required Components Schematic Winding Stackup
Electrical Specifications
Inductance
Leakage
Pin
Spec. Remarks
1 - 3 537.0 - 656.0 uH
1 - 3
100 kHz, 0.10 Vrms
All other windings shorted