2
Technical Data 10248
Effective June 2016
HCMA0503
Automotive grade high current power inductors
www.eaton.com/elx
Product Specifications
Part Number
6
OCL
1
(μH) ± 20%
FLL
2
(μH)
minimum
I
rms
3
(A)
I
sat
4
(A)
DCR (mΩ)
typical @ 20°C
DCR (mΩ)
maximum @ 20°C K-factor
5
HCMA0503-R20-R 0.20 0.13 22.2 21.0 2.1 2.31 1764
HCMA0503-R35-R 0.35 0.22 16.6 14.9 3.9 4.29 1259
HCMA0503-R47-R 0.47 0.30 12.0 11.5 6.5 7.15 820
HCMA0503-R75-R 0.75 0.48 11.3 9.7 8.5 9.35 801
HCMA0503-1R0-R 1.0 0.64 10.1 8.5 10.4 11.4 588
HCMA0503-1R5-R 1.5 0.96 7.5 7.0 17.1 18.5 393
HCMA0503-2R2-R 2.2 1.4 6.8 6.5 22.5 25 325
HCMA0503-3R3-R 3.3 2.1 5.5 6.0 36.4 40.4 273
HCMA0503-4R7-R 4.7 3.0 4.5 5.5 54 60 226
HCMA0503-5R6-R 5.6 3.6 4.25 3.5 63 70.6 206
HCMA0503-6R8-R 6.8 4.4 2.60 3.8 91 99 172
HCMA0503-100-R 10 6.4 2.75 2.3 122 132 158
HCMA0503-150-R 15 9.6 2.4 2.1 138 166 127
HCMA0503-220-R 22 14 1.9 1.9 260 270 106
1. Open Circuit Inductance (OCL) Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc, +25 °C
2. Full Load Inductance (FLL) Test Parameters: 100 kHz, 0.25 Vrms, Isat, +25 °C
3. I
rms
: DC current for an approximate temperature rise of 40 °C without core loss. Derating is necessary for AC currents.
PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the
temperature rise. It is recommended that the temperature of the part not exceed 125 °C under worst case operating
conditions verified in the end application.
4. I
sat
: Peak current for approximately 20% rolloff @ +25 °C
5. K-factor: Used to determine B
p-p
for core loss (see graph). Bp-p = K * L * ΔI. B
p-p
: (Gauss), K: (K-factor from table),
L: (Inductance in μH), ΔI (Peak to peak ripple current in Amps).
6. Part Number Definition: HCMA0503-xxx-R
HCMA0503 = Product code and size
xxx= inductance value in μH, R= decimal point,
If no R is present then last character equals number of zeros
-R suffix = RoHS compliant
Dimensions (mm)
Part marking: AXXX A=automotive, XXX=inductance value in uH, R= decimal point. If no R is present then last character equals number of zeros.
wly=date code, R=revision level
All soldering surfaces to be coplanar within 0.10 millimeters
Tolerances are ±0.2 millimeters unless stated otherwise
DCR measured from point “a” to point “b”
Color: Grey
Do not route traces or vias underneath the inductor
