1. Open Circuit Inductance (OCL) Test Parameters: 100kHz, 0.25V
rms
, 0.0Adc,
+25°C.
2. Full Load Inductance (FLL) Test Parameters: 100kHz, 0.25V
rms
, 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 at +25°C- HCMA1104-R20-R
to HCMA1104-R90-R.
5. I
sat
: Peak current for approximately 30% rolloff at +25°C- HCMA1104-1R0-R
to HCMA1104-100-R.
6. K-factor: Used to determine B
p-p
for core loss (see graph). B
p-p
= K * L *
∆I.
B
p-p
: (Gauss), K: (K-factor from table), L: (Inductance in μH),
∆I
(Peak to peak
ripple current in amps).
7. Part Number Definition: HCMA1104-yyy-R
- HCMA1104 = Product code and size
- yyy= Inductance value in μH, R = decimal point,
if no R is present then third character = number of zeros.
- “-R” suffix = RoHS compliant
Dimensions - mm
Recommended pad layout
Schematic
AXXX
wlyy R
Part marking: A = automotive grade, xxx = inductance value in µH, R = decimal point, if no R is present, third character = number of zeros, wlyy = date code, R = revision level
All soldering surfaces to be coplaner within 0.10 millimeters
Tolerances are ±0.3 millimeters unless stated otherwise
Color: Grey
2
www.eaton.com/elx
HCMA1104 Series
Automotive grade high current, power inductors
Packaging information - mm
Technical Data 10349
Effective December 2014
Supplied in tape and reel packaging, 850 parts per 13” diameter reel.