Description
• 125°C maximum total temperature operation
• 12.5mm x 12.5mm x 5.0mm ferrite core
• Low profile surface mount inductors designed for higher
• Design utilizes ferrite core with high DC bias resistance
• 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
• Solder reflow temperature: +260°C max. for 10 seconds
1) OCL: Open Circuit Inductance test parameters: 100kHz, 0.1Vrms, 0.0Adc.
2) Irms: DC current for an approximate DT of 40°C without core loss. Derating is
3) Isat1: Amperes Peak for approximately 30% rolloff (@25°C)
4) Isat2: Amperes Peak for approximately 30% rolloff (@125°C)
Mechanical Diagrams
Part Number
HCF1305-R47-R
HCF1305-R56-R
HCF1305-1R0-R
HCF1305-1R2-R
HCF1305-1R8-R
HCF1305-2R2-R
HCF1305-3R0-R
HCF1305-3R3-R
HCF1305-4R0-R
HCF1305-4R7-R
material package
speed switch mode applications requiring low voltage
and high current
and low core loss
(range is application specific)
maximum
OCL@-40°C can be lower than OCL@20°C by 15% max.
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.
HCF1305-XXX
wwllyy R
TOP VIEW
A
B
Inductance
BOTTOM VIEW
Rated
1
(µH)
0.47
0.56
1.00
1.20
1.80
2.20
3.00
3.30
4.00
4.70
3
E
F
2
µH ± 20%
OCL (1)
0.47
0.56
1.00
1.20
1.80
2.20
3.00
3.30
4.00
4.70
FRONT VIEW
D
Amperes
Irms (2)
C
32.0
32.0
22.0
22.0
16.3
16.3
13.2
13.2
10.9
10.9
C: 5.0max
A: 12.5max
B: 12.5max
D: 2.00 ref
E: 2.40 +/- 0.10
F: 6.90 +/- 0.30
2002/95/EC
DIMENSION TABLE
RoHS
Amperes
Isat (3)
36.0
30.0
24.0
20.0
18.0
15.0
14.4
12.5
12.0
10.4
5) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I
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
G: 4.00 Ref .
H: 5.40 Ref.
I: 3.00 Ref.
J: 4.00 Ref.
K: 4.00 Ref.
L: 3.4 Ref.
Packaging
• Supplied in tape and reel packaging,
B p-p:(mT), K: (K factor from table), L: (Inductance in µH), ∆I (Peak to peak ripple
current in Amps).
600 parts per reel
Amperes
Isat2 (4)
30.0
22.5
20.0
15.0
15.0
11.2
12.0
10.0
RECOMMENDED PCB LAYOU T
9.0
7.5
I
J
K
mΩ@20°C
G
(Typical)
DCR
0.83
0.83
1.58
1.58
2.58
2.58
4.08
4.08
L
6.0
6.0
I
H
(Maximum)
mΩ@20°C
1
Power Inductors
HCF1305 Series
DCR
Dimensions in Millimeters
wwllyy=Date code, R=Revision Level
1.00
1.00
1.90
1.90
3.10
3.10
4.90
4.90
7.2
7.2
SCHEMAT IC
K-factor
8.3
8.3
6.9
6.9
(5)
21
21
14
14
10
10
2