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Document 941
SMT Power Inductors For Texas Instruments
SolarMagic Power Optimizer
• Developed for Texas Instruments SolarMagic™ Power
Optimizer SM3320 series
• JA4487-AL is designed for 30 V to 100 V panels; JA4488‑AL
is designed for low voltage panels (<50 V)
• High current, low DCR, shielded power inductors
• Recessed board placement for a very low profile design
Core material Ferrite
Terminations  RoHS compliant tin-silver over tin over nickel over
phos bronze. Other terminations available at additional cost.
Weight  36.8 – 39.0 g
Ambient temperature  –40°C to +125°C
Storage temperature  Component: –40°C to +125°C.
Tray 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
Packaging  24 per tray
PCB washing  Tested with pure water or alcohol only. For other
solvents, see Doc787_PCB_Washing.pdf
Inductance Inductance DCR      Irms (A)4
Part at 0 A1
at Ipk2
max3  Ipk2 20°C 40°C
number ±10% (µH) min (µH) (mOhms) (A) rise rise
JA4487-AL
JA4488-AL
30
20
26
18
10.0 10.0 11.0 14.4
11.0 15.0 9.5 13.0
1. Inductance measured at 200 kHz, 1.0 Vrms, 0 Adc using an Agilent/HP 4263B
impedance analyzer or equivalent.
2. Peak primary current drawn at minimum input voltage.
3. DCR is with all windings connected in parallel.
4. Current that causes the specified temperature rise from 25°C ambient. This infor-
mation is for reference only and does not represent absolute maximum ratings
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.50
12,7
max
0.126
3,2
1.220
31,0
1.339
34,0
PC board
1
2
3
4
5
6
7
8
9
10
11
12
Windings to be connected
in parallel on the PC board
0.146
3,7
6
1.260
32,0
1.236
31,4
1.236 Board
31,4 cutout
0.083
7 2,1
6
1.22
31,0
max
1.48
37,7
max
0.039
7 1,0
1
12
0.177
Recommended
4,5
Land Pattern
(Viewed from underside
of PC board)
1
White mark
indicates pin 1
For lowest profile, these parts are designed to
be mounted to the underside of the PC board.
12
0.177
4,5
Dimensions
are in
inches
mm
Document 941  Revised 11/19/15