Document
SURFACE MOUNT CRYSTAL FILTER
ASCF21UB
*RoHS COMPLIANT
APPLICATIONS: • Mobile communication systems. • Pagers. • Cellular and cordless phones. • Radios.
6.0 x 3.5 x 1.0mm
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FEATURES: • Surface-mount ceramic package. • Reflow capable. • Excellent attenuation bandwidth. • Low height (1.0mm max.)
STANDARD SPECIFICATIONS:
PARAMETERS Frequency Range Operating Temperature
Series No. Pole 2 4 2 4 2 4 2 4
21.400MHz - 20° C to + 70° C
Pass Band dB KHz 3 ± 3.75 3 ± 3.75 3 ± 7.5 3 ± 7.5 3 ± 10.0 3 ± 10.0 3 ± 15.0 3 ± 15.0 Attenuation Band dB KHz 18 ± 18.0 35 ± 14.0 15 ± 25.0 35 ± 25.0 15 ± 34.0 35 ± 34.0 15 ± 45.0 35 ± 50.0 Ripple dB 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Loss dB 1.5 2.5 1.5 2.5 2.0 2.5 1.5 2.5
www.DataSheet4U.com
21UB7A 21UB7B 21UB15A 21UB15B 21UB20A 21UB20B 21UB30A 21UB30B Series No. 21UB7A 21UB7B 21UB15A 21UB15B 21UB20A 21UB20B 21UB30A 21UB30B
Attenuation Guaranteed dB KHz -910±10 50 -910±10 80 -910±10 50 -910±10 80 -910±10 50 -910±10 80 -910±10 45 -910±10 80
Terminal Impedance (Ω//pF) 850//6.0 850//3.5 1500//2.0 1500//0.5 1800//0.5 1800//-1.0 3000//0 3000//-1.5
Case Quantity 1 2 1 2 1 2 1 2
MARKING:
- 21.4 - UBXX ZY
OUTLINE DRAWING:
XX : suffix of P/N ZY : Date Code Z = Month (A to L) Y = Year (6 for 2006)
ORDERING INFORMATION:
ASCF21UBXX - Packaging -T Tape and Reel (1,000pcs/reel)
Dimensions: inch (mm)
rev1.1-05/06
ABRACON IS ISO 9001 / QS 9000 CERTIFIED
30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com
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