2
Technical Data 4430
Effective June 2015
HCM0503
High current power inductors
www.eaton.com/elx
Product Specifications
Part Number
6
OCL
1
(μH) ± 20%
FLL
2
(μH)
minimum
I
rms
3
(amps)
I
sat
4
(amps)
DCR (mΩ)
typical @ 20°C
DCR (mΩ)
maximum @ 20°C K-factor
5
HCM0503-R20-R 0.20 0.13 22.2 21.0 2 2.3 1764
HCM0503-R35-R 0.35 0.22 16.6 14.9 4 4.3 1259
HCM0503-R47-R 0.47 0.30 12.0 11.5 6 7.2 820
HCM0503-R75-R 0.75 0.48 11.3 9.7 8 9.4 801
HCM0503-1R0-R 1.0 0.64 10.1 8.5 10 12 588
HCM0503-1R5-R 1.5 0.96 7.5 7.0 17 19 393
HCM0503-2R2-R 2.2 1.4 6.8 6.5 23 25 325
HCM0503- 3R3-R 3.3 2.1 5.5 6.0 36 41 273
HCM0503-4R7-R 4.7 3.0 4.5 5.5 54 60 226
HCM0503-5R6-R 5.6 3.6 4.3 3.5 63 71 206
HCM0503-100-R 10 6.4 2.8 2.3 122 132 158
HCM0503-150-R 15 9.6 2.4 2.1 138 166 127
HCM0503-220-R 22 14 1.9 1.9 260 270 106
1. Open Circuit Inductance (OCL) Test Parameters: 100kHz, 0.25Vrms, 0.0Adc, @ +25°C
2. Full Load Inductance (FLL) Test Parameters: 100kHz, 0.25Vrms, @ I
sat
, @ +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: HCM0503-xxx-R
HCM0503 = 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: 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 0.1 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
Recommended Pad Layout
Schematic
5.15
±0.35
3.0
max
1.0
±0.3
1.5
±0.30
3.15
typ.
2.2
2.2
2.05
1
2
21
12
XXX
wly
R
1
2
a
