RF Components - SAW SF2042B 456 MHz SAW SAW Filter - IF - RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.

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RF Components
Products Guide

SF2042B

456 MHz SAW Filter - IF

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� Designed for 802.16 and WIMAX Receiver IF Application
� Low Insertion Loss
� 5.0 X 7.0 mm Surface-Mount Case
� Differential Input and Output
� Complies with Directive 2002/95/EC (RoHS)
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

download data sheet Rev Date 07/24/06

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Specs
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Electrical Characteristics

Characteristic	Symbol	Minimum	Typical	Maximum	Units
Nominal Center Frequency @ 25�C	CF		456.00		MHz
Insertion Loss @ 25�C			12	14	dB
Differential Impedance line-to-line			200		Ohms
Passband 1dB		�6.4	�7.5		MHz
Passband 3dB		�7.5	�8.8
Group Delay Absolute Group Delay Variation; CF �6.4 MHz			50	150	nsec
Return Loss		8	15		dB
Rejection DC to 256 MHz		30	55		dB
256 to 360 MHz		36	50		dB
360 to 416 MHz		36	40		dB
416 to 443 MHz		25	35		dB
470 to 656 MHz		32	35		dB
656 to 946 MHz		30	50		dB
Equivalent Circuit Input 320 ohm			5.1		pF
Output 400 ohm			4.5		pF
Center Frequency Temperature Coefficient			-15		kHz/�C
Maximum Peak RF Input Power				13	dBm
Temperature Operating		-40		85	�C
Temperature Storage		-40		85	�C