2

Technical Data 4133

Effective July 2017

HCF1305

High frequency, high current power inductors

www.eaton.com/electronics

Packaging information - mm

Dimensions- mm

Product specifications

1) OCL: Open Circuit Inductance test parameters: 100 kHz, 0.1 Vrms, 0.0 Adc. 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

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

DIMENSION TABLE

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.

H

G

I

SCHEMAT IC

1

I

J

2

RECOMMENDED PCBLAYOU T

L

K

wwllyy=Date code, R=Revision Level

TOP V IEW

BOTTOM VI EW

FRONT VIEW

A

F

A: 12.5max

1

2

C

B: 12.5max

C: 5.0max

B

D: 2.00 ref

HCF1305-XXX

3

D

wwllyy R

E

Do not route traces or vias underneath the inductor

K0= 5.50 mm

A0= 12.60 mm

B0= 12.60 mm

SECTIONA-A

1.5 dia

+0.1/-0.0

B0

K0

User direction of feed

Parts packaged on a 13" Diameter reel.

600 parts per reel.

4.0

1.5 dia

2.0

min

A

1.75

11.5

24.0

+/-0.3

A

A0

16.00