JA4637-AL developed for Texas Instruments TPS10210 | Coilcraft
Inductor Finders Power  |   RF
Power Magnetics Tools
RF Inductor Tools
CM Choke \ Ferrite Beads
LC Filter Designer
IC / Inductor Match Tool
Application Notes
Other Resources
Designer's Kits

Coupled Inductor for
SEPIC Applications

  • Developed for use with Texas Instruments TPS40210 SEPIC Converter
  • Shown on PMP5143 Reference Design
  • 1 : 1 Coupled Inductor.
  • Can also be used as a flyback transformer or in SEPIC, Cuk, and Zeta applications
  • 100 Vrms winding to winding isolation
  • RoHS-compliant. 260°Compatible. Matte tin over copper terminations.


Part number
Click for samples
±10% (nH)
DCR max2
Leakage Inductance3
JA4637-AL 250 0.10 0.20 2.5
1 Inductance measured at 200 kHz, 0.1 Vrms,.
2 DCR is for each winding. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
3 Leakage inductance measured from pin 6 to pin 1 with pins 3 and 4 shorted.
4 Isat: DC current at which inductance drops 10% from its value without current. Details
5 Ambient temperature range: −40°C to +85°C
6 Storage temperature range: Component: −40°C to +85°C
Packaging: −40°C to +80°C
7 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. Other solvents

Your comments and suggestions are welcome. Contact [email protected]
Copyright © 2020, Coilcraft, Inc.   Privacy policy
Updated: April 16, 2018