SAW RESONATORS & FILTERS
SAW FILTER
For 280MHz Range: Pager Double Super FR Filters SF 281M
Frequency Characteristics SF281M
SAW FILTER FOR PAGER
Part Number
SF280M
SF281M
SF284M
Nominal Center Frequency (fo) (MHz)
280.0
281.0
284.0
Insertion Loss (dB)i.fo-100MHz to fo ?37.5MHzii. fo ±5MHziii.fo+37.5MHz to fo +100MHz
48min4.5max40min
48min4.5max40min
48min4.5max40min
Ripple( within fo ±5MHz)dB
2.0max
2.0max
2.0max
Input /Output Impedance (Nominal)
230Ω//-0.2pF
230Ω//-0.2pF
230Ω//-0.2pF
Frequency Characteristics SF155M
Part Number
SF139M
SF147M
SF155M
SF163M
SF171M
Nominal CenterFrequency(fo)(MHz)
139
147
155
163
171
Insertion Loss(dB)i)fo±100MHz to fo-46.8MHzii)fo±46.8MHz to fo-38.8MHziii)fo±MHzfoiv)8.8MHz to2.5xfo
50min50min.6.5max42min
50min50min.6.5max42min
50min50min.6.5max42min
50min50min.6.5max42min
50min50min.6.5max42min
Impedance(Nomimal)
210Ω//-13.3pF
210Ω//-12.1pF
210Ω//-12.3pF
210Ω//-11.0pF
210Ω//-10.9pF
(Operating Temperature Range: -10°C to +50°C)
Frequency Characteristics SF325M
Part Number
SF325M
Nominal Center Frequency(fo)(MHz)
325.3
Insertion Loss (dB)fo±100MHz to fo-39.5MHzfo±.3MHzfo±9.5Mhz to fo00MHz
50min4max50min
Ripple Deviation (Within fo ±3.3MHz)dB
2max
Input/Output Impedance (Nominal)
150Ω//-0pF
(Operating Temperature Range: -10°C to +50°C)
SAW RESONATOR
For Remote Control/Security
1、port Type
Part Number
Insertion Loss(dB)max
Center Frequency(fo)
Input/OutputCapacitance at 1MHz
Spurious Response(dB)min
Sr418.00MD
10
418.00
1.5
8.0
SR423.22MD
10
423.22
1.5
8.0
SR433.92MD
10
439.92
1.5
8.0
1、port Type
Part Number
Resonant Loss(dB)max
Resonant Frequency(MHz)
Parallel CapacitanceAt 1MHz(pF)
SR303.83M
2.2
303.83
2.3
SR304.25M
2.2
304.25
2.3
SR308.00
2.2
308.00
2.3
SR314.95
2.2
314.95
2.3
SR417.95
2.5
417.95
2.3
SR423.17
2.5
423.17
2.3
SR433.37
2.5
433.37
2.3
SR433.87
2.5
433.87
2.3
