B3845 ETC1 | Alldatasheet
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Technical content
Preliminary Data Sheet B3845
2 Apr 22, 2002
427,25 MHzLow-Loss Filter Preliminary Data Sheet Ceramic packageQCC12B
Features
- Low-loss filter
- Temperature stable
- Package for Surface Mounted Technology (SMT)
- Hermetically sealed ceramic package Terminals
- Gold-plated Dimensions in mm, approx. weight 0,2 g Pin configuration
10 Input
12 Input ground or bal. input
4 Output
6 Output ground or bal. output 3, 9 Case - ground 1, 2, 7, 8 To be grounded ElectrostaticSensitiveD evice (ESD ) Type Ordering code Marking and Package according to Packing according to B3845 B39421B3845Z910 C61157A0007A052 F61074V8038Z000 Maximum ratings Operable temperature range T – 45/+ 85 ˚C Storage temperature rangeTstg – 40/+ 85 ˚C DC voltage VDC 0V Source power Ps 10 dBm source impedance 75 Ω
3 Apr 22, 2002
427,25 MHzLow-Loss Filter Preliminary Data Sheet Characteristics Operating temperature: T = -40 ... +85 ˚C Terminating source impedance: ZS =7 5 Ω and matching network Terminating load impedance: ZL =7 5 Ω and matching network Matching circuit: Cp1 = 10pF2) Ls2 = 22nH 2) Ls3 = 15nH 2) Cp4 = 12pF2) 1)Temperature dependance offc: fc(TA) =fc(T0)(1 +TC f(TA –T0)2) 2) Element values depend on PCB layout min. typ. max. Nominal frequency fN — 427,25 — MHz Insertion attenuation atfN (T=25 ˚C) α N 6,0 6,5 8,0 dB Variation of insertion att.(rel. toα N ) α rel —— ±0,9 dB Frequency response 3 dB Lower frequency fL 3dB — 426,55 426,75 MHz 3 dB Upper frequency fU 3dB 427,75 428,25 — MHz 35 dB Lower frequency fL35dB 424,25 425,30 — MHz 35 dB Upper frequency fU35dB — 429,50 430,25 MHz Amplitude ripple(peak to adjacent valley) fN ± 100 kHz — 0,3 0,5 dB Relative attenuation α rel fN - 200,0 MHz ...fN - 10,0 MHz 40 48 — dB fN - 10,0 MHz ...fN - 3,0 MHz 35 42 — dB fN + 3,0 MHz ...fN + 10,0 MHz 35 48 — dB fN + 10,0 MHz ...fN + 200,0 MHz 40 52 — dB Temperature coefficient of frequency 1) TC f — – 0,036 — ppm/K 2 Turnover temperature T0 —2 5 — ˚ C
4 Apr 22, 2002
427,25 MHzLow-Loss Filter Preliminary Data Sheet Normalized frequency response Normalized frequency response
5 Apr 22, 2002
427,25 MHzLow-Loss Filter Preliminary Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC IS, P.O. Box 80 17 09, 81617 Munich, GERMANY EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the informa- tion contained therein without EPCOS’ prior express consent is prohibited. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices.