2778

KR Electronics, Inc. KR Electronics General Description KR 2778+ is a 78.75 MHz bandpass filter. The filter has a minimum of 3 dB bandwidth of 18 MHz . Other passband frequencies are available. Please consult the factory. www.krfilters.com Features • Sharp Transition to Stopband • > 60 dB Stopband • 50 Ω Source and Load Typical Performance Passband Amplitude & Group Delay (1 dB/div and 20 nsec/div) 23 Aug 2007 17:54:00 CH1 CH2 PRm Cor 1 S 21 S 21 log MAG delay 1 dB/ 20 ns/ REF 0 dB REF 50 ns Overall Response (10 dB/div) 23 Aug 2007 17:54:52 CH1 S 21 log MAG 10 dB/ REF 0 dB PRm Cor Avg 12 PRm Cor 2 Smo CENTER 78.750 000 MHz SPAN 18.000 000 MHz CH1 CENTER 78.750 000 MHz SPAN 100.000 000 MHz KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2007, KR Electronics, Inc. Web Email Phone Fax www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 Page 1 KR Electronics, Inc. KR Electronics 2778+ Specifications Parameter Filter type Center Frequency Insertion Loss Attenuation at 57.75 MHz Attenuation at 69.75 MHz Attenuation at 87.75 MHz Attenuation at 99.75 MHz Source and Load Specification Bandpass 78.75 MHz < 3 dB (< 2 dB typical) > 60 dB < 3 dB < 3 dB > 60 dB 50 Ω www.krfilters.com Physical Dimensions Notes: 1. Surface mount package — Metal cover open frame 2. Dimensions in inches 3. Maximum reflow temperature is 230° C for 10 sec maximum. 4. If boards are cleaned after installation, units must be completely dried. Web Email Phone Fax www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 Page 2 KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2007, KR Electronics, Inc.