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  • High current inductors ideal for use in PV Inverter, String Inverter, Bidirectional Inverter applications
  • Inductance range from 13 microhenries to 320 microhenries and current rating over 200 Amps
  • Flat wire coil minimizes losses 
  • Superior thermal management and significantly reduced size and weight compared with conventional toroid designs
  • Custom Design Available up to 500A current for inverter systems 20kW and up
HWI57A2 Series High Current Fixed Inductors for Inverter Systems
Unit of Measure
Items HWI57A2 Series High Current Fixed Inductors for Inverter Systems
HWI57A2-202A-130P
13.0 Microhenry (µH) Inductance (±15%) HWI57A2 Series High Current Fixed Inductor for Inverter Systems 		HWI57A2 Series High Current Fixed Inductors for Inverter Systems
HWI57A2-162A-200P
20.0 Microhenry (µH) Inductance (±15%) HWI57A2 Series High Current Fixed Inductor for Inverter Systems 		HWI57A2 Series High Current Fixed Inductors for Inverter Systems
HWI57A2-118A-390P
39.0 Microhenry (µH) Inductance (±15%) HWI57A2 Series High Current Fixed Inductor for Inverter Systems 		HWI57A2 Series High Current Fixed Inductors for Inverter Systems
HWI57A2-108A-470P
47.0 Microhenry (µH) Inductance (±15%) HWI57A2 Series High Current Fixed Inductor for Inverter Systems 		HWI57A2 Series High Current Fixed Inductors for Inverter Systems
HWI57A2-101A-510S
51.0 Microhenry (µH) Inductance (±15%) HWI57A2 Series High Current Fixed Inductor for Inverter Systems
Inductance (±15%) N/A 13 µH N/A 20.0 µH N/A 39 µH N/A 47.0 µH N/A 51.0 µH
Maximum Direct Current (DC) Resistance N/A 0.75 mOhm N/A 1.15 mOhm N/A 2.1 mOhm N/A 2.60 mOhm N/A 3.0 mOhm
SRF (Typ) N/A 12 MHz N/A 5.0 MHz N/A 6.2 MHz N/A 5.4 MHz N/A 8 MHz
Isat (Typ) 10% drop N/A 110 A N/A 88 A N/A 62 A N/A 56 A N/A 55 A
Isat (Typ) 20% drop N/A 164 A N/A 130 A N/A 94 A N/A 86 A N/A 82 A
Isat (Typ) 30% drop N/A 212 A N/A 190 A N/A 122 A N/A 112 A N/A 106 A
Irms (Typ) 20ºC rise N/A 134 A N/A 106 A N/A 78 A N/A 70 A N/A 67.0 A
Irms (Typ) 40ºC rise N/A 202 A N/A 162 A N/A 118 A N/A 108 A N/A 101 A
Standard Operating Temperature Range N/A -40 to +180 ºC
Note N/A
  • Inductance measured @ 100 KHz, 1 Vrms
  • Isat is the DC current where the inductance drops the specified amount from its original value.
  • Irms is the DC current that causes the specified temperature rise of the winding from 25 ºC ambient for the inductor without housing or potting. Aluminum case, thermal conductive epoxy, or thermal pads can be added to improve cooling.
 		N/A
  • Inductance measured @ 100 KHz, 1 Vrms
  • Isat is the DC current where the inductance drops the specified amount from its original value.
  • Irms is the DC current that causes the specified temperature rise of the winding from 25 ºC ambient for the inductor without housing or potting. Aluminum case, thermal conductive epoxy, or thermal pads can be added to improve cooling.
 		N/A
  • Inductance measured @ 100 KHz, 1 Vrms
  • Isat is the DC current where the inductance drops the specified amount from its original value.
  • Irms is the DC current that causes the specified temperature rise of the winding from 25 ºC ambient for the inductor without housing or potting. Aluminum case, thermal conductive epoxy, or thermal pads can be added to improve cooling.
 		N/A
  • Inductance measured @ 100 KHz, 1 Vrms
  • Isat is the DC current where the inductance drops the specified amount from its original value.
  • Irms is the DC current that causes the specified temperature rise of the winding from 25 ºC ambient for the inductor without housing or potting. Aluminum case, thermal conductive epoxy, or thermal pads can be added to improve cooling.
 		N/A
  • Inductance measured @ 100 KHz, 1 Vrms
  • Isat is the DC current where the inductance drops the specified amount from its original value.
  • Irms is the DC current that causes the specified temperature rise of the winding from 25 ºC ambient for the inductor without housing or potting. Aluminum case, thermal conductive epoxy, or thermal pads can be added to improve cooling.