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42.5 MHz SAW Filter  
Part Number 210502B  
1. Features  
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 4.8 MHz  
High attenuation  
Single Ended Operation  
Dual In-line Package (DIP)  
2. Electrical Specifications  
Source and Load Impedance = 50Ω  
Room Temperature : +25℃  
Minimum  
Typical  
42.5  
20.5  
4.83  
5.04  
5.95  
0.6  
Maximum  
-
-
23.0  
-
Center Frequency (fo)  
Insertion Loss  
MHz  
dB  
-
4.75  
1dB Bandwidth  
MHz  
MHz  
MHz  
dB  
3dB Bandwidth  
-
-
-
40dB Bandwidth  
6.1  
1.0  
160  
-
-
Amplitude Ripple (fo ± 2.25 MHz)  
Group Delay Variation (fo ± 2.25 MHz)  
Absolute Delay  
-
105  
nsec  
usec  
dB  
-
3.26  
53  
45  
-
-
Ultimate Rejection  
-72  
-
Temperature Coefficient of Frequency  
Input POWER : 10dBm  
ppm/℃  
D3512 Package Dimension  
Matching Schematic  
12.8±0.5  
5.5max 6.0max  
7.6±0.2  
5
1
L2  
L1  
Input  
50  
Output  
Ω
50Ω  
L3  
L1 = L2 = 15nH, L3 = 220nH  
Pin Configuration  
Dimensions shown are nominal in millimeters  
Input  
Output  
1
5
Ground  
Others  
2,4  
Base : Fe(SPCC), Au plating over Ni plated  
Cap : Cu & Cr Alloy, Ni Plated  
Termination : Kovar, Au Plated  
Ground  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364, Samjeong-Dong,  
Ojeong-Gu, Bucheon-City,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 04. 26  
Rev 1.0  
Gyounggi-Do, Korea 421-809  
42.5 MHz SAW Filter  
Part Number 210502B  
3. Typical Performance ( at +25℃ )  
1dB Bandwidth & Ripple  
45dB Bandwidth  
14 Jan 2013 15:09:04  
14 Jan 2013 15:07:35  
CH1 S21  
CH2 S21  
LOG  
LOG  
1 dB/ REF -20.39 dB  
1 dB/ REF -20.8 dB  
1: 0. 0000 dB  
3: . 17370 dB  
0. 000 000 MHz  
4. 500 000 MHz  
CH1 S21  
PRm  
LOG  
10 dB/ REF -20.39 dB  
1: 0. 0000 dB  
0. 000 000 MHz  
CH1 Markers  
REF=1  
CH1 Markers  
REF=1  
BW: 5. 954528 MHz  
PRm  
BW: 4. 837464 MHz  
1
2
cent  
:
42. 512487 MHz  
Q: 8. 7882  
cent  
:
42. 499007 MHz  
Q: 7. 1373  
1_loss  
:
-20 . 559 dB  
1_loss : -20 . 564 dB  
1
2
Cor  
Cor  
3
4
3
PRm  
2
CH2 Markers  
REF=2  
mean:-20 . 625 dB  
s. dev : . 10820 dB  
p-p : . 48850 dB  
3
4
Cor  
CENTER 42. 500 000 MHz  
SPAN 6. 000 000 MHz  
CENTER 42. 500 000 MHz  
SPAN 20. 000 000 MHz  
3dB Bandwidth & Group Delay  
Smith Chart(S11 & S22)  
14 Jan 2013 15:09:24  
14 Jan 2013 15:10:39  
CH1 S21  
CH2 S21  
LOG  
DEL  
1 dB/ REF -20.39 dB  
200 ns/ REF 3.208 us  
1: 0. 0000 dB  
3: 13. 352 ns  
0. 000 000 MHz  
4. 500 000 MHz  
CH1 S11  
CH2 S22  
1 U FS  
1 U FS  
1: 15. 242  
2: 91. 887  
-64 . 109  
116 . 50  
58. 413 pF  
436. 26 nH  
42. 500 000 MHz  
42. 500 000 MHz  
CH1 Markers  
REF=1  
PRm  
PRm  
BW: 5. 043971 MHz  
cent  
:
42. 509304 MHz  
Q: 8. 4277  
1_loss  
: -20 . 549 dB  
1
2
2
Cor  
Cor  
3
PRm  
Smo  
PRm  
CH2 Markers  
mean: 3. 2672 us  
4
2
REF=2  
3
s. dev : 21. 149 ns  
p-p  
: 106. 68 ns  
Cor  
Cor  
1
CENTER 42. 500 000 MHz  
SPAN 6. 000 000 MHz  
CENTER 42. 500 000 MHz  
SPAN 20. 000 000 MHz  
Wideband Properties  
SWR(S11 & S22)  
14 Jan 2013 15:11:39  
1: 0. 0000 dB 0. 000 000 MHz  
14 Jan 2013 15:10:28  
1: 8. 8628  
2: 5. 1316  
CH1 S21  
PRm  
LOG  
10 dB/ REF -20.9 dB  
CH1 S11  
CH2 S22  
SWR  
SWR  
20  
20  
/
/
REF 8.879  
REF 5.135  
42. 500 000 MHz  
42. 500 000 MHz  
CH1 Markers  
PRm  
REF=1  
2:-58 . 920 dB  
42. 5000 MHz  
3:-30 . 432 dB  
85. 0000 MHz  
1
Cor  
1
PRm  
3
2
Cor  
2
START . 010 000 MHz  
STOP 200. 000 000 MHz  
CENTER 42. 500 000 MHz  
SPAN 20. 000 000 MHz  
I T F Co., Ltd.  
102-901, Bucheon Technopark 364, Samjeong-Dong,  
Ojeong-Gu, Bucheon-City,  
Tel: 82-32-621-1213  
Fax: 82-32-621-1218  
http://www.itf.co.kr  
sales@itf.co.kr  
2013. 04. 26  
Rev 1.0  
Gyounggi-Do, Korea 421-809