Phone: +86-23-62920684

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LB140DS03

Rev. Date

2005-11-7

SIPAT Co., Ltd.

( CETC No. 26 Research Institute )

Nanping Huayuan Road No. 14

Chongqing, China, 400060

Rev.

1.0

Page 1/3

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140MHz SAW Filter

3.5MHz Bandwidth

Part Number: LB140DS03

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

139.7

140

140.3

Insertion Loss

dB

-

10

12.5

1 dB Bandwidth

MHz

2.5

3.03

-

3 dB Bandwidth

MHz

3.5

3.95

-

40 dB Bandwidth

MHz

-

7.18

8

Passband Variation

dB

-

0.4

1

Absolute Delay

usec

-

0.85

-

Group Delay Variation(f0±0.6MHz)

nsec

-

60

100

Phase Linearity (f0±0.6MHz)

degrees

-

3

6

Ultimate Rejection

dB

-

42

-

Material Temperature coefficient

KHz/°C

-2.52

Ambient Temperature

°C

25

Package Size

SMP-53

Notes:

1. All specifications are based on the test circuit shown

2. In production, devices will be tested at room temperature to a guardbanded specification to ensure

electrical compliance over temperature

3. Electrical margin has been built into the design to account for the variations due to temperature drift

and manufacturing tolerances

4. This is the optimum impedance in order to achieve the performance show

Matching Configuration

L1=56nH L2=82nH

C1=39pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L2

L1

C1