Description
• 125°C maximum total temperature operation
• 12.5mm x 12.5mm x 5.0mm ferrite core
m
aterial package
• Low profile surface mount inductors designed for higher
speed switch mode applications requiring low voltage
and high current
• Design utilizes ferrite core with high DC bias resistance
and low core loss
• Inductance range from 0.47µH to 4.7µH
• Current range from 36.0 Amps to 10.4 Amps
• Frequency range 100kHz to 1MHz
Applications
• Next generation processors
• High current DC-DC converters
• VRM, multi-phase buck regulators
• PC Workstations, Routers, Servers
• Telecom soft switches, Base stations
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(range is application specific)
• Solder reflow temperature: +260°C max. for 10 seconds
maximum
P
ackaging
• Supplied in tape and reel packaging,
600 parts per reel
HCF1305 Series
Power Inductors
Part Number Rated OCL (1) Irms (2) Isat (3) Isat2 (4) DCR DCR K-factor
Inductance µH ± 20% Amperes Amperes Amperes mΩ@20°C mΩ@20°C (5)
(µH) (Typical) (Maximum)
HCF1305-R47-R 0.47 0.47 32.0 36.0 30.0 0.83 1.00 21
HCF1305-R56-R 0.56 0.56 32.0 30.0 22.5 0.83 1.00 21
HCF1305-1R0-R 1.00 1.00 22.0 24.0 20.0 1.58 1.90 14
HCF1305-1R2-R 1.20 1.20 22.0 20.0 15.0 1.58 1.90 14
HCF1305-1R8-R 1.80 1.80 16.3 18.0 15.0 2.58 3.10 10
HCF1305-2R2-R 2.20 2.20 16.3 15.0 11.2 2.58 3.10 10
HCF1305-3R0-R 3.00 3.00 13.2 14.4 12.0 4.08 4.90 8.3
HCF1305-3R3-R 3.30 3.30 13.2 12.5 9.0 4.08 4.90 8.3
HCF1305-4R0-R 4.00 4.00 10.9 12.0 10.0 6.0 7.2 6.9
HCF1305-4R7-R 4.70
4.70
10.9 10.4 7.5 6.0 7.2 6.9
1) OCL: Open Circuit Inductance test parameters: 100kHz, 0.1Vrms, 0.0Adc.
OCL@-40°C can be lower than OCL@20°C by 15% max.
2) Irms: DC current for an approximate DT 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.
3) Isat1: Amperes Peak for approximately 30% rolloff (@25°C)
4) Isat2: Amperes Peak for approximately 30% rolloff (@125°C)
5) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I
B p-p:(mT), K: (K factor from table), L: (Inductance in µH), ∆I (Peak to peak ripple
current in Amps).
Part number definition:
HCF1305-XXX-R
HCF1305 = Product code and size
XXX = Inductance value in uH.
R = Decimal point. If no R is present, third character = #of zeros
-R suffix indicates RoHS compliant
C
B
FRONT VIEW
DHCF1305-XXX
wwllyy R
TOP VIEW
A
E
DIMENSION TABLE
A: 12.5max
B: 12.5max
C: 5.0max
D: 2.00 ref
E: 2.40 +/- 0.10
F: 6.90 +/- 0.30
G: 4.00 Ref.
H: 5.40 Ref.
I: 3.00 Ref.
J: 4.00 Ref.
K: 4.00 Ref.
L: 3.4 Ref.
3
BOTTOM VIEW
F
1 2
H
G
I
SCHEMATIC
1
I
J
2
RECOMMENDED PCB LAYOUT
L
K
Dimensions in Millimeters
wwllyy=Date code, R=Revision Level
Mechanical Diagrams
