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HA4158-EL and JA4575-AL Series

Dual Inductors for Class-D output filters

RoHS compliant AEC-Q flag
HA4158-BL and JA4575-AL have been replaced by HA4158-EL and JA4575-BL, which are more cost effective versions that are identical in form, fit, function and performance. View old data sheet.
Coilcraft's HA4158-EL and JA4575-AL Series uncoupled dual inductors provide two back-to-back inductors that operate independently without coupling effects.  This unique design saves space by combining two inductors in a single package. They are perfect for Class-D applications.
  • Designed for low distortion and the best possible sound quality.
  • Shielded package contains both coils.
  • Very low magnetic coupling
  • SMT (HA4158-EL) and through-hole (JA4575-BL) versions.
  • AEC-Q200 Grade 1 (−40°C to +125°C)
Buy Now:
Count Unit price
1 $2.05
200 $1.75
400 $1.52
1200 $1.18
2400 $1.01
4800 $0.93

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
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Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2
(Tolerance: ±10%)
DCR max (mΩ) 3 SRF typ (MHz) 4 THD+N 5 Isat (A) 6 Irms (A) 7
10% drop 20% drop 30% drop 20°C rise 40°C rise
HA4158-EL_ 10 13.0 21.5 <0.1 6.0 6.7 7.1 4.0 6.0
JA4575-BL_ 10 13.0 21.5 <0.1 6.0 6.7 7.1 4.0 6.0
  1. When ordering, please specify termination and packaging codes: e.g. HA4158-ELD
  2. Inductance is for each winding, measured at 100 kHz, 1.0 Vrms, 0 Adc using an Agilent/HP 4284A impedance analyzer.
  3. DCR is for each winding, measured on a micro-ohmmeter at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. SRF measured using Agilent/HP 8753D network analyzer.
  5. Total harmonic distortion + noise measured at 20 W into a 2-Ohm or 4-Ohm load at 1 kHz with a 21 Vdc supply
  6. Isat: DC current (typical) at which the inductance drops the specified amount from its value without current.
  7. Irms: Current applied to both windings at the same time that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.



  • L = RoHS compliant tin-silver over copper.
  • = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost) 
  • S = non-RoHS tin-lead (63/37). (Special order, added cost)


  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape (400 parts per full reel).
  • B = Less than full reel
    In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead.iler added ($25 charge), use code letter D instead.
RoHS compliant
Ambient temperature range:
–40°C to +125°C with Irms current
Storage temperature range:
Component: −40°C to +165°C
Tape and reel packaging: −40°C to +80°C
Maximum part temperature:
+165°C (Ambient + temperature rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Inductance vs. Current

ESR vs Frequency



Physical characteristics

           HA4158-EL                                                           JA4575-BL


Tape and Reel specification

  Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
  13" (330 mm) A B C D E W P Po P1 H T part_or_ao.gif
HA4158-EL 400 330 100 13 30,4 24,4 24 16 4 2 10,8 0,5
JA4575-BL 250 330 100 13 30,4 24,4 24 20 4 2 13,84 0,5

General specification

Core Material:
5.0 g
HA4158-EL: 400/13″ reel Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 10.8 mm pocket depth
JA4575-BL: 250/13″ reel Plastic tape: 24 mm wide, 0.5 mm thick, 20 mm pocket spacing, 13.84 mm pocket depth


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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