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B3780 Dataheets PDF



Part Number B3780
Manufacturers EPCOS
Logo EPCOS
Description SAW Components
Datasheet B3780 DatasheetB3780 Datasheet (PDF)

www.DataSheet4U.com SAW Components Data Sheet B3780 SAW Components Low-loss Filter Data Sheet B3780 433,92 MHz Ceramic package QCC8B Features s RF low-loss filter for remote control receivers s Package for Surface Mounted Technology (SMT) s Balanced and unbalanced operation possible s Passivation layer: Elpas s AEC-Q200 qualified component family Terminals s Ni, gold plated typ. dimensions in mm, approx. weight 0,07 g Pin configuration 1) 1 2 5 6 4,8 3,7 Input Ground (recommended) or Inp.

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www.DataSheet4U.com SAW Components Data Sheet B3780 SAW Components Low-loss Filter Data Sheet B3780 433,92 MHz Ceramic package QCC8B Features s RF low-loss filter for remote control receivers s Package for Surface Mounted Technology (SMT) s Balanced and unbalanced operation possible s Passivation layer: Elpas s AEC-Q200 qualified component family Terminals s Ni, gold plated typ. dimensions in mm, approx. weight 0,07 g Pin configuration 1) 1 2 5 6 4,8 3,7 Input Ground (recommended) or Input Input (recommended) or Input Ground Output (recommended) or Output Ground Output Ground (recommended) or Output Case - Ground to be grounded Type B3780 Ordering code B39431-B3780-Z810 Marking and package according to C61157-A7-A46 Packing according to F61074-V8167-Z000 Electrostactic Sensitive Device (ESD) Maximum ratings Operable temperature range TA Storage temperature range Tstg VDC DC voltage Source power PS 1) The –45/+120 –45/+120 6 10 ˚C ˚C V dBm source impedance 50 Ω recommended pin configuration usually offers best suppression of electrical crosstalk.The filter characteristics refer to this configuration. 2 Dec 22, 2004 SAW Components Low-loss Filter Data Sheet Characteristics Reference temperature: Terminating source impedance: Terminating load impedance: B3780 433,92 MHz TA = –40 ... +85˚C ZS = 50 Ω and matching network ZL = 50 Ω and matching network min. typ. 433,92 max. — MHz Center frequency (center frequency between 3 dB points) Minimum insertion attenuation including loss in matching elements excluding loss in matching elements Pass band (relative to αmin) 433,645 ... 434,195 MHz Filter bandwidth αrel≤ 3 dB Relative attenuation (relative to αmin) 10,00 ... 414,00 414,00 ... 425,00 425,00 ... 431,50 431,50 ... 433,00 434,92 443,00 530,00 670,00 830,00 1000,00 ... 443,00 ... 530,00 ... 670,00 ... 830,00 ...1000,00 ...2500,00 fC — αmin — — 2,0 1,6 2,8 2,4 dB dB — 0,9 3,0 dB 780 αrel 850 920 kHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz 48 42 28 18 14 36 55 45 60 43 53 47 33 21 18 41 60 50 65 48 — — — — — — — — — — dB dB dB dB dB dB dB dB dB dB Impedance for pass band matching 1) Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT — — 330 || 1,9 330 || 1,9 — — Ω || pF Ω || pF 1) Power matching of the SAW filter requires a certain source and load impedance. This characteristic impedance is provided by the 50 Ohm environment and a wideband matching network at input and output. After removing the SAW filter, the conjugate complex impedance values of the input and output matching network including the 50 Ohm environment are calculated. For more details, we refer to EPCOS application note #4. 3 Dec 22, 2004 SAW Components Low-loss Filter Data Sheet Matching network to 50 Ω (element values depend on pcb layout and equivalent circuit) Cp1 = 1,5 pF Ls2 = 39 nH Ls3 = 39 nH Cp4 = 1,5 pF B3780 433,92 MHz Minimising the crosstalk For a good ultimate rejection a low crosstalk is necessary. Low crosstalk can be rea.


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