Notes from Tables

1. Temperature

of

the

component

(ambient

plus

temperature rise) must be within specified operating

temperature range.

2. The rated current as listed is either the saturation current

or the heating current depending on which value is lower.

3. The saturation current is the current which causes

the inductance to drop to 75% of its initial inductance at

zero bias. This current is determined by placing the

component at room ambient (25°C), and applying a short

duration pulse current (to eliminate self-heating effects) to

the component.

4. The heating current is the DC current, which

causes the temperature of the part to increase by

approximately 40°C. This current is determined by extend-

ing the terminals of the component with 30mm length 28

gauge buss wires and applying the current to the device

for 30 minutes. The temperature is measured by placing

the thermocouple between the winding and the shield.

5. In high volt*time applications, additional heating in the

component can occur due to core losses in the inductor

which may necessitate derating the current in order to limit

the temperature rise of the component. In order to deter-

mine the approximate total loss (or temperature rise) for a

given application, both copper losses and core losses

should be taken into account.

SMT POWER INDUCTORS

Shielded Drum Core - PL91XX Series

0%

20%

40%

60%

80%

100%

120%

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Normalized Isat

Inductance vs Current Characteristics

For More Information:

Pulse Worldwide

Headquarters

2 Pearl Buck Court

Bristol, PA 19007

U.S.A.

www.pulseeng.com

Tel: 215 781 6400

Fax: 215 781 6403

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#07-01/02

KA Centre

Singapore 368324

Tel: 65 6287 8998

Fax: 65 6280 0080

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Yang Mei Chen

Taoyuan Hsien

Taiwan, R. O. C.

Tel: 886 3 4641811

Fax: 886 3 4641911

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B402, Shenzhen

Tech-Innovation International

Tenth Kejinan Rd.

High-Tech Industrial Park

Nanshan District, Shenzhen

China

Tel: 86 755 33966678

Fax: 86 755 33966700

Pulse North China

Room 1503

XinYin Building

No. 888 YiShan Rd.

Shanghai 200233

China

Tel: 86 21 54643211/2

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Europe

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Germany

Tel: 49 7032 7806 0

Fax: 49 7032 7806 12

www.pulseeng.com

M121.A (

6/07)

Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product

names mentioned herein may be trademarks or registered trademarks of their respective owners. © Copyright, 2007. Pulse Engineering, Inc. All rights reserved.

1

2

Schematic

Weight . . . . . . . . 2.5 grams

Tape & Reel . . . . . . 500/reel

Dimensions: Inches

mm

Unless otherwise specified,

all tolerances are ± .010

0,25

TAPE & REEL

LAYOUT

.421

10,70

.256

6,50

.177

4,50

Ø

USER DIRECTION

OF FEED

4

3

1

2

.630

16,00

.945 ± .012

24.00 ± 0,30

.421

10,70

PL91XX

Date Code

Country of Origin

PL91XX

Date Code

Country of Origin

PL91XX

Date Code

Country of Origin

4

3

1

2

4

3

1

2