B3872 EPCOS | Alldatasheet
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Technical content
2 Nov 12, 2002
38,90 MHzVestigial Sideband Filter Preliminary Data Sheet Ceramic packageDCC18 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 Input
10 Input – ground
6 Output
5 Output – ground
2, 4, 7, 9 Case – ground 3, 8 Must be grounded ElectrostaticSensitiveD evice (ESD ) Type Ordering code Marking and Package according to Packing according to B3872 B39390-B3872-U210 C61157-A7-A054 F61074-V8166-Z000 Maximum ratings Operable temperature range T – 20/+ 85 ˚C Storage temperature rangeTstg – 40/+ 85 ˚C DC voltage VDC 0V Source power Ps 15 dBm source impedance 50 Ω
3 Nov 12, 2002
38,90 MHzVestigial Sideband Filter Preliminary Data Sheet Characteristics Operating temperature: T =2 5 ˚ C Terminating source impedance: ZS =5 0 Ω Terminating load impedance: ZL =5 0 Ω Group delay aperture 80 kHz min. typ. max. Nominal frequency fN — 38,90 — MHz Insertion attenuation atfN α N 33,4 34,5 36,4 dB Relative attenuation (relative toα N ) α rel 31,90 MHz 34,0 48,0 — dB 33,15 MHz -0,9 0,1 1,1 dB 33,40 MHz -0,8 0,0 1,2 dB 39,65 MHz 2,3 3,3 4,3 dB 40,15 MHz 22,0 25,0 — dB 40,40 MHz 34,0 40,0 — dB 44,40 MHz 38,0 55,0 — dB 25,00 … 31,90 MHz 32,0 40,0 — dB 40,40 … 45,00 MHz 30,0 37,0 — dB Reflected wave signal suppression 1,50µs … 6,00µs after main pulse 37,0 45,0 — dB 1,60µs … 1,50µs before main pulse 50,0 65,0 — dB Group delayat fN τN — 1,6 — µs Group delay ripple (p-p) Δτ 33,40 … 39,65 MHz — 90 150 ns Temperature coefficient of frequency TC f — – 87 — ppm/K
4 Nov 12, 2002
38,90 MHzVestigial Sideband Filter Preliminary Data Sheet Frequency response
5 Nov 12, 2002
38,90 MHzVestigial Sideband 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.