Tx IF Filters for Cellular Phones Series/Type: B4944 The following products presented in this data sheet are being withdrawn. Ordering Code B39181B4944Z810 Substitute Product Date of Withdrawal 2004-05-19 Deadline Last Orders 2004-09-30 Last Shipments 2004-12-31 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. The following products presented in this data sheet are being withdrawn: B39181B4944Z810 Date of withdrawal: Deadline for last orders: Last shipments: 19−MAY−04 30−SEP−04 31−DEC−04 For further information please contact your nearest EPCOS sales office, which will also support you in selecting a suitable substitute. The addresses of the sales offices are given on the Internet at www.epcos.com/sales. 1 SAW Components Data Sheet B4944 SAW Components B4944 181,80 MHz Low-Loss Filter for Mobile Communication Data Sheet Ceramic package QCC8B Features ● Low-loss IF filter for mobile telephone TDMA ● ● ● ● ● systems, transmit path Low amplitude ripple Usable passbands 30 kHz Balanced to balanced operation Impedance transformation from 100 Ω to 200 Ω Ceramic package for Surface Mounted Technology (SMT) Terminals ● Ni, gold-plated Dimensions in mm, approx. weight 0,07 g Pin configuration 1, 3 5, 7 2, 6 4, 8 Balanced Input Balanced Output To be grounded Case ground Type Ordering code Marking and Package according to Packing according to B4944 B39181-B4944-Z810 C61157-A7-A46 F61074-V8037-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC PIN – 30 / + 85 – 40 / + 85 3 0 2 ˚C ˚C V dBm source impedance 50 Ω Sept 6, 2002 SAW Components B4944 181,80 MHz Low-Loss Filter for Mobile Communication Data Sheet Characteristics (with matching inductor) T = -30 to + 85˚C ZS = 100 Ω ZL = 200 Ω || 330 nH Operating temperature range: Terminating source impedance: Terminating load impedance: fc Center frequency Maximum insertion attenuation αmax 181,785... 181,815 MHz min. typ. max. — 181,44 — — 1,6 2,0 dB — 0,1 0,2 dB MHz ∆α Amplitude ripple (p-p) 181,785... 181,815 MHz α Attenuation 50,0 198,0 201,0 360,0 1570,0 1700,0 1800,0 4000,0 ... 164,0 ... 201,0 ... 320,0 ... 550,0 ...1580,0 ...2400,0 ...1818,0 ...4400,0 MHz MHz MHz MHz MHz MHz MHz MHz 37,0 25,0 37,0 30,0 30,0 30,0 33,0 15,0 3 Sept 6, 2002 45,0 30,0 45,0 50,0 34,0 34,0 36,0 20,0 — — — — — — — — dB dB dB dB dB dB dB dB SAW Components B4944 181,80 MHz Low-Loss Filter for Mobile Communication Data Sheet Transfer function (narrowband): Transfer function (wideband): 4 Sept 6, 2002 SAW Components B4944 181,80 MHz Low-Loss Filter for Mobile Communication Data Sheet Transfer function (passband, scale +0,27 MHz) : 5 Sept 6, 2002 SAW Components B4944 181,80 MHz 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 brochure 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 considered 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. 6 Sept 6, 2002