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.
5. 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).
6. Part Number Definition: HCM1305-yyy-R
- HCM1305 = 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
2
www.eaton.com/elx
HCM1305 Series
High current, power inductors
Dimensions - mm
Technical Data 4371
E
ffective June 2014
Top View
13.3±0.5
5.0 max.
Side View
2.54±0.3
Bottom View
Recommended Pad Layout
3.3
Schematic
12.2±0.3
xxx
wlyy R
4.0±0.5
7.7 typ.
14.2
4.9
8.5 typ.
Part Marking: 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 coplanar within 0.10 millimeters.
Tolerances are ±0.3 millimeters unless stated otherwise.
Color: Grey.
Packaging information - mm
Supplied in tape and reel packaging, 400 parts per 13” diameter reel.
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