SAW Components Data Sheet B3872 SAW Components B3872 Vestigial Sideband Filter 38,90 MHz Preliminary Data Sheet Ceramic package DCC18 Standard ● B/G Features ● Vestigial sideband filter with sound ● Constant group delay ● Hermetically sealed ceramic package Terminals ● Gold plated Dimensions in mm, approx. weight 0,8 g Pin configuration 1 10 6 5 2, 4, 7, 9 3, 8 Input Input – ground Output Output – ground Case – ground Must be grounded Type Ordering code Marking and Package according to Packing according to B3872 B39390-B3872-U210 C61157-A7-A054 F61074-V8166-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps – 20/+ 85 – 40/+ 85 0 15 2 ˚C ˚C V dBm source impedance 50 Ω Nov 12, 2002 SAW Components B3872 Vestigial Sideband Filter 38,90 MHz Preliminary Data Sheet Characteristics Operating temperature: Terminating source impedance: Terminating load impedance: Group delay aperture T = ZS = ZL = 25 50 50 80 ˚C Ω Ω kHz min. typ. max. Nominal frequency fN — 38,90 — MHz Insertion attenuation at fN αN 33,4 34,5 36,4 dB Relative attenuation (relative to αN) 31,90 33,15 33,40 39,65 40,15 40,40 44,40 25,00 … 31,90 40,40 … 45,00 αrel 34,0 -0,9 -0,8 2,3 22,0 34,0 38,0 32,0 30,0 48,0 0,1 0,0 3,3 25,0 40,0 55,0 40,0 37,0 — 1,1 1,2 4,3 — — — — — dB dB dB dB dB dB dB dB dB 37,0 50,0 45,0 65,0 — — dB dB 1,6 — µs ns MHz MHz MHz MHz MHz MHz MHz MHz MHz Reflected wave signal suppression 1,50 µs … 6,00 µs after main pulse 1,60 µs … 1,50 µs before main pulse τN — Group delay ripple (p-p) ∆τ 33,40 … 39,65 MHz — 90 150 — – 87 — Group delay at fN TCf Temperature coefficient of frequency 3 Nov 12, 2002 ppm/K SAW Components B3872 Vestigial Sideband Filter 38,90 MHz Preliminary Data Sheet Frequency response 4 Nov 12, 2002 SAW Components B3872 Vestigial Sideband Filter 38,90 MHz 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 information 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. 5 Nov 12, 2002