ABRACON ASCF21U, ASCF45U Service Manual
CERAMIC SURFACE-MOUNT
• 21.4MHz and 45MHz FUNDAMENTAL
MONOLITHIC CRYSTAL FILTERS
ASCF21U and ASCF45U
APPLICATIONS:
• Mobile communication systems.
• Pagers.
• Cellular and cordless phones. • Radios.
FEATURES:
• Surface-mount ceramic package. • Reflow capable.
• Excellent attenuation bandwidth. • Low height.(1.5mm max.)
PIN
1
2
3
4
5
6
FUNCTION
IN
GND
GND
OUT
GND
GND
ORDERING OPTIONS
ASCFXXU XX - Packaging
-T for Tape and reel
7.2 x 5.2 x 1.5 mm
Operating Temperature: -20°C to + 70°C.
Environmental and mechanical specifications, see appendix C. Group 2.
Applications notes, see appendix A.
Tape and reel, see appendix H.
Marking, see appendix G.
Recommended handling, see appendix F.
We Manufacture to your Custom Specifications. Please Call for Details.
SSTTAANNDDAARRDD SSPPEECCIIFFIICCAATTIIOONNS
S
ABRACON RIPPLE
LOSS TERMINATING IM
PEDANCE
PART NO.
POLE
dB kHz dB kHz dB dB (
W //
pF)
STOPBAND
PASSBAND
ASCF21U8
2 3 ±3.75 20 ±18.0 1.0 2.0 (850 // 5.0)
ASCF21U15
23 ±7.50 18 ±25.0 1.0 2.0 (1500 // 1.0)
ASCF21U20
23±10.010 ±30.0 1.0 2.0 (1800 // 1.0)
ASCF21U30
23±15.015 ±45.0 1.0 2.0 (2000 // 1.5)
Dimensions: Inches (mm)
ABRACON IPPLE
LOSS TERMINATING IM
PEDANCE
PART NO.
POLE
dB kHz dB kHz dB dB (
W //
pF )
STANDARD SPECIFICATIORNS
ASCF45U8
2 3 ±3.75 20 ±25.0 1.0 2.5 (650 // 3.5)
ASCF45U12
2 3 ±6.00 15 ±20.0 1.0 2.5 (650 // 5.0)
ASCF45U15
23 ±7.50 15 ±25.0 1.0 2.5 (650 // 3.5)
ASCF45U30
23±15.015 ±60.0 1.0 2.5 (1200 // -3.0)
STOPBAND
PASSBAND
21 or 45
See suffix in P/N
29 Journey • Aliso Viejo, CA 92656 • USA
(949) 448-7070 • FAX: (949) 448-8484
E-MAIL: abinfo@ abracon.com • INTERNET ADDRESS: www.abracon.com
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: Left blank if standard • All specifications and markings subject to change without notice
ABRACON
®
CORPORATION
77
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