B3850 EPCOS | Alldatasheet
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Technical content
2 Jul 15, 2002
125,00 MHzLow-Loss Filter Data Sheet top view side view bottom view 1,66,5 13,3 1,7 1,0 7,62 12 3 4 5 678910 3,81 2,3 Ceramic packageDCC12A
Features
■ Low-loss IF filter for GSM EDGE base station ■ Usable bandwidth 400 kHz ■ Very low group delay ripple ■ Temperature stable ■ Ceramic SMD package Terminals ■ Gold plated Dimensions in mm, approx. weight 0,4 g Pin configuration
10 Input
1 Input ground
5 Output
6 Output ground
3, 8 Ground 2, 4, 7, 9 Case ground ElectrostaticSensitiveD evice (ESD ) Type Ordering code Marking and Package according to Packing according to B3850 B39121-B3850-H510 C61157-A7-A94 F61074-V8131-Z000 Maximum ratings Operable temperature range T –40 / +85 ˚C Storage temperature rangeTstg –40 / +85 ˚C DC voltage VDC 1,2 V Source power Ps 10 dBm
3 Jul 15, 2002
125,00 MHzLow-Loss Filter Data Sheet Characteristics Operating temperature range: T = -10 .. 85 ˚C Terminating source impedance: ZS = 50 Ω and matching network Terminating load impedance: ZL = 50Ω and matching network min. typ. max. Nominal frequency fN — 125,0 — MHz Minimum insertion attenuation α min — 6,2 7,0 dB Pass bandwidth α rel≤ 1,0 dB B1dB 400 560 — kHz α rel ≤3,0 dB B3dB — 840 — kHz Amplitude ripple(peak to adjacent valley) fN ± 200 kHz — 0,1 — dB Amplitude variation(p-p) Δα fN ± 200 kHz — 0,6 1,0 dB Absolute group delay τ @fN 0,7 1,1 1,7 µs Group delay ripple(p-p) Δτ fN ± 200 kHz — 70 120 ns Relative attenuation(relative toα min) α rel fN ± 0,4 MHz ... fN ± 0,6 MHz 0 2 — dB fN ± 0,6 MHz ... fN ± 1,2 MHz 8 10 — dB fN ± 1,2 MHz ... fN ± 1,8 MHz 20 30 — dB fN ± 1,8 MHz ... fN ± 3,4 MHz 25 40 — dB fN ± 3,4 MHz ... fN ± 6,5 MHz 34 50 — dB fN ± 6,5 MHz ... fN ± 9,5 MHz 40 50 — dB fN ± 9,5 MHz ... fN ± 17,0 MHz 43 60 — dB 10,0 MHz ...fN − 17,0 MHz 55 60 — dB fN + 17,0 MHz ... 450,0 MHz 1) 55 60 — dB VSWR (Input and output in pass band) — 2,0 2,3
4 Jul 15, 2002
125,00 MHzLow-Loss Filter Data Sheet 1) Narrowband responses (typ. 40 dB) at 202 MHz, 228 MHz, 250 MHz, and at 375 MHz 2) Temperature dependance offc: fc(TA) =fc(T0)(1 +TC f(TA –T0)2) Matching network to 50Ω (Element values depend upon PCB layout) Lp1 = 33 nH L s3 = 56 nH Ls2 = 68 nH L p4 = 27 nH Temperature coefficient of frequency 2) TC f — – 0,036 — ppm/K 2 Turnover temperature T0 —5 0 — ˚ C min. typ. max.
5 Jul 15, 2002
125,00 MHzLow-Loss Filter Data Sheet Normalized frequency response Normalized frequency response (pass band)
6 Jul 15, 2002
125,00 MHzLow-Loss Filter 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.