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251917B

更新时间：2025-07-13 07:59:59

品牌：ITF

描述：SAW Bandpass Filter

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251917B 概述

SAW Bandpass Filter SAW带通滤波器

251917B 数据手册

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SAW Bandpass Filter 251917B

1. Features

ꢀ

IF Bandpass Filter

High Attenuation

Single-Ended Operation

DIP Package

Maximum Storage Temperature Range : -40℃ ~ 85℃

Electrostatics Sensitive Device (ESD)

2. Package Dimension

12.8±0.5

5.5max 6.0max

7.6±0.2

Package : D3512

Pin Configuration

Input

Output

Dimensions shown are nominal in millimeters

Base : Fe(SPCC), Au plating over Ni plated

Cap : Cu & Cr Alloy, Ni Plated

Termination : Kovar, Au Plated

2, 4

3, 6

Ground

Case ground

I T F Co., Ltd.

Part No.

251917B

102-901, Bucheon Technopark 364,

Samjeong-Dong, Ojeong-Gu, Bucheon-City,

Gyounggi-Do, Korea 421-809

Rev. Date

Rev.

2008-10-30

NM8054-CS01

1/5

SAW Bandpass Filter 251917B

3. Specifications

Fo = 119.9 MHz

Terminating source impedance : 50Ω and matching network

Terminating load impedance

: 50Ω and matching network

Minimum

Typical

119.9

28.0

19.0

19.2

20.06

0.7

Maximum

Center Frequency

Insertion Loss

MHz

30.0

1dB Bandwidth

3dB Bandwidth

40dB Bandwidth

MHz

18.9

20.2

2.0

120

Amplitude Ripple (fo ± 9.42 MHz)

Group Delay Variation (fo ± 9.42 MHz)

Absolute Delay

nsec

usec

4.68

Ultimate Rejection

Relative Attenuation

Fo ± 10.0MHz

Temperature Coefficient of Frequency

ppm/°C

-18

Notes :

1) All specifications are based on the matching schematic shown below

2) All specifications are measured by Agilent Network analyzer and full 2 port calibration at room temperature

3) All attenuation measurements are measured relative to insertion loss

I T F Co., Ltd.

Part No.

Rev. Date

Rev.

251917B

102-901, Bucheon Technopark 364,

Samjeong-Dong, Ojeong-Gu, Bucheon-City,

Gyounggi-Do, Korea 421-809

2008-10-30

NM8054-CS01

2/5

SAW Bandpass Filter 251917B

4. Matching Schematic

( Actual matching values may vary due to PCB layout and parasitics )

Input

Output

L1=82nH, L2=68nH

L3=68nH, L4=82nH

5. Marking Configuration

ITF¹⁾08A001²⁾

251917B³⁾

119.9⁴⁾-19.0M⁵⁾

1) Manufacturer name

2) Lot Number

3) Part Number

4) Center frequency

5) 1dB-Bandwidth

I T F Co., Ltd.

Part No.

Rev. Date

Rev.

251917B

102-901, Bucheon Technopark 364,

Samjeong-Dong, Ojeong-Gu, Bucheon-City,

Gyounggi-Do, Korea 421-809

2008-10-30

NM8054-CS01

3/5

SAW Bandpass Filter 251917B

6. Typical Performance ( at +25°C )

10 Sep 2008 21:32:27

1: 0. 0000 dB 0. 000 000 MHz

CH1 S21

LOG

10 dB/ REF -28.92 dB

CH1 Markers

BW: 20. 062252 MHz

REF=1

Cor

cent

119. 931338 MHz

Q: 5. 9780

1_loss : -28 . 562 dB

Hld

CENTER 119. 900 000 MHz

SPAN 52. 000 000 MHz

10 Sep 2008 21:35:50

CH1 S21

CH2 S21

LOG

1 dB/ REF -28.09 dB

1 dB/ REF -28.63 dB

1: 0. 0000 dB

3: . 26560 dB

0. 000 000 MHz

18. 700 000 MHz

CH1 Markers

BW: 18. 993551 MHz

REF=1

Cor

cent

119. 940526 MHz

Q: 6. 3148

1_loss : -28 . 279 dB

Cor

CH2 Markers

mean:-28 . 351 dB

s. dev : . 08960 dB

p-p : . 56100 dB

REF=2

CENTER 119. 900 000 MHz

SPAN 24. 000 000 MHz

I T F Co., Ltd.

Part No.

Rev. Date

Rev.

251917B

102-901, Bucheon Technopark 364,

Samjeong-Dong, Ojeong-Gu, Bucheon-City,

Gyounggi-Do, Korea 421-809

2008-10-30

NM8054-CS01

4/5

SAW Bandpass Filter 251917B

10 Sep 2008 21:36:12

10 Sep 2008 21:32:54

1: 0. 0000 dB 0. 000 000 MHz

CH1 S21

CH2 S21

LOG

DEL

1 dB/ REF -28.09 dB

50 ns/ REF 4.673 us

1: 0. 0000 dB

3:-11 . 825 ns

0. 000 000 MHz

18. 700 000 MHz

CH1 S21

LOG

10 dB/ REF -28.92 dB

CH1 Markers

BW: 19. 191223 MHz

CH1 Markers

REF=1

2:-36 . 427 dB

-10 . 0000 MHz

Cor

cent

119. 938838 MHz

Q: 6. 2497

3:-32 . 615 dB

10. 0000 MHz

1_loss : -28 . 350 dB

Hld

Smo

Cor

CH2 Markers

mean: 4. 6884 us

s. dev : 6. 9387 ns

p-p : 36. 621 ns

REF=2

CENTER 119. 900 000 MHz

SPAN 24. 000 000 MHz

CENTER 119. 900 000 MHz

SPAN 52. 000 000 MHz

10 Sep 2008 21:36:57

11 Nov 2008 14:05:26

3:-. 32070 dB 18. 837 600 MHz

CH1 S11

CH2 S22

SWR

REF 2.264

REF 1.808

1: 2. 2643

2: 1. 8084

119. 900 000 MHz

CH2 S21

LOG

1 dB/ REF -27.75 dB

CH2 Markers

REF=2

mean:-27 . 477 dB

Cor

s. dev : . 10570 dB

p-p : . 69690 dB

Cor

CENTER 119. 900 000 MHz

SPAN 24. 000 000 MHz

CENTER 119. 900 000 MHz

SPAN 52. 000 000 MHz

I T F Co., Ltd.

102-901, Bucheon Technopark 364,

Samjeong-Dong, Ojeong-Gu, Bucheon-City,

Gyounggi-Do, Korea 421-809

Part No.

Rev. Date

Rev.

251917B

2008-10-30

NM8054-CS01

5/5

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