B4871 EPCOS | Alldatasheet

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IF Filters for Narrowband Cellular Phones Series/Type: B4871 The following products presented in this data sheet are being withdrawn. Ordering Code Substitute Product Date of Withdrawal Deadline Last Orders Last Shipments B39141B4871H310 14.06.2006 31.08.2006 30.09.2006 For further information please contact your nearest EPCOS sales office, which will also support you in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.

Jan 03, 2003 SAW Components B4871 135,54 MHz Low Loss Filter for Mobile Communication Data Sheet SMD ceramic package QCC12C 1,48 side view 7,0 5,0 top view 2,54 1,4 2,54 0,6 bottom view 1,0

Features

I Low-loss IF filter for mobile telephone I Channel selection in AMPS / D-AMPS systems I Filter surface passivated I Balanced or unbalanced operation possible I Package for Surface Mounted Technology (SMT) Terminals I Ni, gold plated Dimensions in mm, approx. weight 0,25 g Pin configuration Input Output Balanced input or input ground Balanced output or output ground 3,9 Case ground 1,2,7,8 Not connected Electrostatic Sensitive Device (ESD) Type Ordering code Marking and Package according to Packing according to B4871 B39141-B4871-H310 C61157-A7-A95 F61074-V8170-Z000 Maximum ratings Operable temperature range T – 30/+ 85 Storage temperature range Tstg – 40/+ 85 DC voltage VDC V Source power Ps dBm

Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Characteristics Operating temperature range: T = -30˚C ... 85˚C Terminating source impedance: ZS Terminating load impedance: ZL 1) Temperature dependance of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2) min. typ. max. Nominal frequency fN 135,54 MHz 3 dB Bandwidth kHz Minimum insertion attenuation αmin 4,2 5,3 dB (including losses in the matching network) Amplitude ripple (p-p) fN – 10,0 kHz ... fN + 10,0 kHz 0,2 1,5 dB fN – 13,0 kHz ... fN + 13,0 kHz 0,5 3,0 dB Group delay ripple (p-p) fN – 13,0 kHz ... fN + 13,0 kHz 2,0 10,0 µs Relative attenuation (relative to αmin) αrel fN ± 60,0 kHz ... fN ± 120,0 kHz dB fN ± 120,0 kHz ... fN ± 240,0 kHz dB fN ± 240,0 kHz ... fN ±1000,0 kHz dB fN ± 330,0 kHz dB fN ± 660,0 kHz dB Impedance within the passband Input: ZIN = RIN || CIN 850 || 0,8 Ω || pF Output: ZOUT = ROUT || COUT 850 || 0,8 Ω || pF Temperature coefficient of frequency 1) TCf – 0,034 ppm/K2 Turnover temperature

Jan 03, 2003 SAW Components B4871 135,54 MHz Low Loss Filter for Mobile Communication Data Sheet Test matching networks to 50 Ω(element values depend on pcb layout) a) Unbalanced - unbalanced matching network b) Balanced - balanced matching network Input: Pin 12 Output: Pin 6 Ls1 = 220 nH Cp2 = 3,3 pF Cp3 = 3,3 pF Ls4 = 220 nH Input: Pins 12 and 10 Output: Pins 6 and 4 Cs1 = 15 pF Cs2 = 12 pF Lp1 = 150 nH Lp2 = 150 nH Cs3 = 15 pF Cs4 = 12pF Note : The balanced - balanced network is realized using TOKO 1:1 baluns B5FL. The insertion attenu- ation of each balun is 0,6 dB at fN. The loss of the baluns is not included in the specified filter insertion attenuation. S-Parameters of the TOKO 1:1 balun B5FL are available on request. The level of ultimate suppression may be limited by electromagnetic feedthrough depending on the layout of the pcb and the arrangement of the matching components. The above mentioned characteristics can be realized either in balanced or in unbalanced mode of operation. For more details see our application note PCB Layout for Highly Selective IF Filters.

Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Normalized transfer function passband (measured single ended - single ended) Normalized transfer function wideband (measured single ended - single ended)

Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Normalized transfer function passband (measured balanced - balanced) Normalized transfer function wideband (measured balanced - balanced)

Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC WT P.O. Box 80 17 09, D-81617 München EPCOS AG 2002. All Rights Reserved. Reproduction, publication and dissemination of this bro- chure and the information contained therein without EPCOS’ prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be con- sidered as guaranteed characteristics. 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.