Phone: +86-23-62920684

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com

Part Number

LBT12101

Rev. Date

2005-3-29

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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121.8MHz SAW Filter

7.8MHz Bandwidth

Part Number: LBT12101

Specifications

Parameter

Unit

Minimum

Typical

Maximum

Center Frequency

MHz

121.72

121.8

121.88

Insertion Loss

dB

24

24.5

3 dB Bandwidth

MHz

7.8

7.81

30 dB Bandwidth

MHz

8.73

8.8

40 dB Bandwidth

MHz

8.86

9.1

Passband Variation

dB

0.5

1

Absolute Delay

usec

2.72

4

nsec

100

200

Ultimate Rejection

dB

40

45

Subatrate Material

112LT

Ambient Temperature

°C

25

Package Size

DIP2712

(27.0x12.8x4.7mm3)

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=47nH L2=56nH

C1=33pF C2=47pF

Source/Load Impedance=50 ohm

Notes - Component values may change depending

on board layout.

L2

L1

C1

C2