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D1803-ALD

Power Inductor

Coilcraft Inc 

Document 619-1

Power Inductor –D1803-AL

For Marvell

DSP Switchers™

This power inductor was developed specifically for Marvell

Semiconductors for use with their DSP Switcher™ Power

Management chipsets 88PD8300 and 88PD830. It is also

used in modules 88MD8200 and 88MD830 as well as in

DB-88PD8300 Development Board.

Core material Ferrite

Terminations RoHS matte tin over copper

Weight 0.36 g

Ambient temperature –40°C to +125°C

Storage temperature Component: –40°C to +125°C.

Packaging: –55°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C

/ 85% relative humidity)

Mean Time Between Failures (MTBF) 26,315,789 hours

Packaging 750/7″ reel; 2500/13″ reel Tape: 12 mm wide,

0.3 mm thick, 4 mm pocket spacing, 3.3 mm pocket depth

PCB washing Only pure water or alcohol recommended

Part

number1

D1803-AL_

Inductance

±30%2

(nH)

1000

Leakage

inductance3

typ (nH)

21

DCR

typ4

(mOhms)

0.55

Impedance typ (Ohms)

1 MHz 10 MHz

1.98

19.2

SRF

typ5

(MHz)

27.4

10%

drop

0.38

Isat (A)6

20%

drop

0.44

30%

drop

0.52

1. When ordering, please specify packaging code:

D1803-ALC

Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic

tape (750 parts per full reel).

B = Less than full reel. In tape, but not machine ready.

To have a leader and trailer added ($25 charge),

use code letter C instead.

D = 13″ machine-ready reel. EIA-481 embossed plastic

tape (2500 parts per full reel).

2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/

HP 4284A impedance analyzer.

3. Leakage inductance tested on one winding with the other winding

grounded.

4. DCR measured on Keithley Instruments micro-ohmmeter or

equivalent.

5. SRF measured using Agilent/HP 8753ES network analyzer.

6. DC current at which the inductance drops from its value without

current.

7. Current that causes the specified temperature rise from 25°C ambient.

8. Electrical specifications at 25°C. All specifications are per winding.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

2

4

1

3

0.183

4,65

0.200

5,08

max

2

4

3

1

0.260

6,60

max

0.059

1,50

3

0.035

0,89

min

0.128

3,25

max

0.025

0,64

1

0.004 / 0,102

0.100

2,54

0.180

4,57

2

4

0.240

6,10

2

4

0.080

3

1

2,03

Recommended

Land Pattern

Specifications subject to change without notice.

Please check our website for latest information. Document 619-1 Revised 10/03/07

© Coilcraft, Inc. 2007

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