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Document 776-1
Dual Inductors for Class D
• Dual inductors for use in Class D output filters
• A single shielded package contains both coils.
• Very low magnetic coupling
• AEC-Q200 Grade 1 qualified
• SMT (HA4158-EL) and through-hole (JA4575-BL) versions
• HA4158-BL and JA4575-AL not recommended for new designs
• Designed for low distortion and the best sound quality
Core material Ferrite
Terminations  RoHS compliant tin-silver (96.5/3.5) over copper.
Weight  5.0 g
Ambient temperature  –40°C to +125°C with Irms current
Maximum part temperature  +165°C (ambient + temp rise)
Storage temperature  Component: –40°C to +165°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
      Maximum power (W)2
Part
2 Ohm 4 Ohm Inductance3
number1
load load ±10% (µH)
HA4158-EL_ 48
JA4575-BL_ 48
68
68
10.0
10.0
DCR
SRF Isat (A)7      Irms (A)8
max4 typ5 THD+N6 10% 20% 30% 20°C 40°C
(Ohms) (MHz) (%) drop drop drop rise rise
0.013 21.5 <0.1 6.0 6.7 7.1 4.0 6.0
0.013 21.5 <0.1 6.0 6.7 7.1 4.0 6.0
1. When ordering, please specify packaging code:
HA4158-ELD
Packaging: D = 13machine-ready reel. EIA-481 embossed plastic
tape.
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.
2. Maximum power into specified load that causes less than a 40°C
temperature rise. Measured at 1 kHz with a 14.4 Vdc supply for the
2-Ohm load and a 21 Vdc supply for the 4-Ohm load. Refer to Output
Power table for typical output conditions. Tested using the TAS5414A
Evaluation Board from Texas Instruments.
3. Inductance measured at 100 kHz, 1.0 Vrms, 0 Adc using an Agilent/
HP 4284A impedance analyzer.
4. DCR is for each winding, measured on a micro-ohmmeter.
5. SRF measured using Agilent/HP 8753D network analyzer.
6. Total harmonic distortion + noise measured at 20 W into a 2­‑Ohm or
4‑Ohm load at 1 kHz with a 21 Vdc supply.
7. DC current (typical) at which the inductance drops the specified
amount from its value without current.
8. 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.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Output Power
Temperature
Power rise from 25°C
typ (W)
(°C)
Load THD+N
Test
condition
22
26
10.0
10.2
4 Ohm 1% 1 kHz, 14.4 Vdc
4 Ohm 10% 1 kHz, 14.4 Vdc
46
56
21.8
22.8
4 Ohm 1% 1 kHz, 21 Vdc
4 Ohm 10% 1 kHz, 21 Vdc
36
44
27.8
25.1
2 Ohm 1% 1 kHz, 14.4 Vdc
2 Ohm 10% 1 kHz, 14.4 Vdc
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
Document 776-1  Revised 06/27/16
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

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Document 776-2
Class D Dual Inductors
L vs Current
ESR vs Frequency
HA4158-EL (SMT version)
18
0.423
10,75
max
45
0.466
11,84
max
1
4
8
5
0.419
10,65
max
Recommended
0.125 ±0.003
3,175 ±0,076
0.026 ±0.003
0.004 /0,10
Land Pattern
with a 0.006 inch / 0.1524 mm
solder screen thickness
0,66 ±0,076
0.235
5,97
45
1
0.265
6,75
0.047
1,19
0.265
6,75
18
Dimensions are in
inches
mm
0.145
3,68
Packaging  400/13reel  Plastic tape:  24 mm wide, 0.5 mm thick,
16 mm pocket spacing, 10.8 mm pocket depth
JA4575-BL (Through-hole version)
18
0.423
10,75
max
Parts manufactured prior
to December 2011 may
be marked differently.
45
0.466
11,84
max
18
0.390
9,91
max
4
5
0.110 ±0.01
2,80 ±0,254
0.325 ±0.008
8,26 ±0,20
0.0244
0,620
45
0.264 ±0.008
6,71 ±0,2
Recommended
PC Board Layout
0.325
8,26
1
0.264
6,71
1
8
0.043
1,10
Dimensions are in
inches
mm
Packaging  250/13reel  Plastic tape:  24 mm wide, 0.5 mm thick,
20 mm pocket spacing, 13.84 mm pocket depth
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
Document 776-2  Revised 06/27/16
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.