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B3865 Datasheet(PDF) 3 Page - EPCOS |
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B3865 Datasheet(HTML) 3 Page - EPCOS |
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3 / 6 page  3 Oct 31, 2002 SAW Components B3865 240,0 MHz Low-Loss Filter Data Sheet Characteristics Operating temperature range: T = -10 .. 85˚C Terminating source impedance: ZS=50 Ω and matching network Terminating load impedance: ZS=50 Ω and matching network 1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2) min. typ. max. Nominal frequency fN — 240,0 — MHz Minimum insertion attenuation α min 12,0 14,0 16,0 dB (including matching network) Passband width α rel ≤ 1 dB B1dB 3,6 4,0 — MHz Amplitude ripple (p-p) ∆α fN ± 1,8 MHz — 0,8 1,1 dB Absolute group delay (at fN) τ — 1,07 2,5 µs Group delay ripple (p-p) ∆τ fN ± 1,7 MHz — 150 200 ns fN ± 1,8 MHz — 150 300 ns Deviation of linear phase (p-p) ∆ϕ fN ± 1,8 MHz — 4 6 ˚ Relative attenuation (relative to α min) α rel fN ± 2,13 MHz ... fN ± 2,5 MHz 5 8 — dB fN ± 2,5 MHz ... fN ± 2,93 MHz 13 16 — dB fN ± 2,93 MHz ... fN ± 3,3 MHz 24 27 — dB fN − 5,0 MHz ... fN − 3,3 MHz 35 38 — dB fN − 70 MHz ... fN − 5,0 MHz 40 43 — dB fN + 3,3 MHz ... fN + 3,7 MHz 32 35 — dB fN + 3,7 MHz ... fN + 5,0 MHz 35 38 — dB fN + 5,0 MHz ... fN + 5,4 MHz 38 40 — dB fN + 5,4 MHz ... fN + 70 MHz 40 43 — dB Input and output return loss 12 15 — dB Temperature coefficient of frequency 1) TCf — – 0,036 — ppm/K2 Turnover temperature T0 —40— ˚C |
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