MPS Industries, Inc.
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  • High Current HEW™ Inductor in low-profile compact form
  • Inductance Range: 4.7 µH to 29 µH
  • Very low DCR
  • True 45-55 Amp handling capability on the wire (refer to Isat characteristic when doing your design to see which is more critical)
  • Core Material: Powdered cores with distributed air gap for soft saturation
  • Terminations: RoHS compliant, typically SAC305 or equivalent
HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
Unit of Measure
Items HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
HWI3422-055A-110H
11.0 Microhenry (µH) Inductance (±15%) HWI34H Series High Current Helical Edge Wound (HEW) Flat Wire Inductor 		HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
HWI3422-055A-7R3H
7.3 Microhenry (µH) Inductance (±15%) HWI34H Series High Current Helical Edge Wound (HEW) Flat Wire Inductor 		HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
HWI3422-055A-4R7H
4.7 Microhenry (µH) Inductance (±15%) HWI34H Series High Current Helical Edge Wound (HEW) Flat Wire Inductor 		HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
HWI3428-047A-200H
20.0 Microhenry (µH) Inductance (±15%) HWI34H Series High Current Helical Edge Wound (HEW) Flat Wire Inductor 		HWI34H High Current Helical Edge Wound HEW Flat Wire Inductor
HWI3428-047A-130H
13.0 Microhenry (µH) Inductance (±15%) HWI34H Series High Current Helical Edge Wound (HEW) Flat Wire Inductor
Inductance (±15%) N/A 11 µH N/A 7.3 µH N/A 4.7 µH N/A 20.0 µH N/A 13 µH
Nominal Direct Current (DC) Resistance N/A 1.50 mOhm N/A 1.50 mOhm N/A 1.50 mOhm N/A 2.10 mOhm N/A 2.10 mOhm
Maximum Direct Current (DC) Resistance N/A 1.90 mOhm N/A 1.90 mOhm N/A 1.90 mOhm N/A 2.60 mOhm N/A 2.60 mOhm
Isat (Typ) 10% drop N/A 39 A N/A 71 A N/A >120 A N/A 30 A N/A 58 A
Isat (Typ) 20% drop N/A 57 A N/A 101 A N/A >150 A N/A 42 A N/A 78 A
Isat (Typ) 30% drop N/A 75 A N/A 126 A N/A >180 A N/A 52 A N/A 100 A
Irms (Typ) 20ºC rise N/A 36 A N/A 36 A N/A 36 A N/A 31 A N/A 31 A
Irms (Typ) 40ºC rise N/A 55 A N/A 55 A N/A 55 A N/A 47 A N/A 47 A
SRF (Typ) N/A 23.0 MHz N/A 26.0 MHz N/A 36.0 MHz N/A 18.0 MHz N/A 25.0 MHz
Typical Capacitance N/A 4.3 pF N/A 5.1 pF N/A 4.0 pF N/A 3.0 pF N/A 3.1 pF
Standard Operating Temperature Range N/A -40 to +180 ºC
Note N/A
  • Inductance measured at 100 kHz, 1.0 Vrms, 0 Adc on Agilent/HP 4284A LCR meter or Equivalent.
  • DCR measured on GW Instek GOM-802 Microhmmeter or Equivalent.
  • DC Current at 25°C resulting in % drop of inductance from zero current. Isat is the more critical current specification when less than Irms.
  • Current that causes a specificed temperature rise in an inductor from 25°C ambient. This specification is for reference only as the actual Temperature Rise will depends on the type of wires used and the cooling available (convection via airflow, or conduction through mounting to heat sink). The actual Temperature Rise will be much lower as the flat wire has greater surface for heat dissipation under power.
  • SRF measured using Agilent/HP 4395A network analyzer and an Agilent/HP 43961A test fixture.