Monolithic Crystal Filters – Surface Mount Model “21MQ7.5A”, 2 pole, 21.4 MHz, 5x7x1.3 mm • • • MERCURY Since 1973 Thin and light weight; excellent shock and vibration resistance Suitable for automatic pick and place; Solder reflow capable Specifically designed for mobile, wireless communications, pagers, cellular and cordless phones. SPECIFICATIONS Model 21MQ7.5A Package p “Q” package, 5x7x1.3 mm Ceramic SMD Number of Poles r 2 Poles Center Frequency n: 21.4 MHz Pass Bandwidthq ± 3.75 kHz min. at 3 dB Stop Bandwidth ±20 KHz max. at 18 dB Guaranteed Attenuation 70 dB min. at -910 KHz ± 10 KHz Ripple 1.0 dB max. Insertion Loss 2.0 dB max. Spurious 15 dB min. Terminating Impedance 850 Ω // 6.0 pF Operating Temperature -20°C to +70°C Aging ± 2 ppm /year max. Storage Temperature -40°C to +85°C Packaging 180 mm reel; 16 mm tape; 8 mm pitch; 1000 pcs per reel. HOW TO ORDER: Part Number: Please specify 21MQ7.5A 21 M Q 7.5 A n o p q r n: Center Frequency Code “21” for 21.4 MHz o: MCF Series p: Package code “Q” for 5x7x1.3 mm q: 3dB bandwidth: “7.5” for ± 3.75 kHz (total 7.5 KHz). r: “A” for 2 poles MERCURY www.mercury-crystal.com Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: [email protected] U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: [email protected] MERCURY Page 1 of 3 Date: May 1, 2008 Rev. 0 Monolithic Crystal Filter – Surface Mount Model “21MQ7.5A”, 2 pole, 21.4 MHz, 5x7x1.3 mm MERCURY Since 1973 ENVIRONMENTAL AND MECHANICAL SPECIFICATIONS Green Requirement RoHS compliant and Pb (lead free) Gross Leak 60 sec min at +125°C in D.I. water or fluorocarbon fluid Fine Leak < 2 x10-8 atm cc /sec by helium leak check Shock Half sine wave acceleration of 100G peak amplitude for 11 m. sec. duration, 3 cycles each plane. Vibration ±5 ppm max. Frequency:10 to 55 Hz, amplitude: 1.5 mm or 10 Gs rms. Duration: 6 hours. Drop Test Free drop onto hard wood board at 75 cm, 3 radon drops. Solderability MIL-STD-883, Method 2003 Humidity After 48 hours at 85°C, 85% relative humidity non-condensing Thermal Shock Temperature cycling: Exposed at -40°C for 30 minutes then to +85°C for 30 minutes for duration of 5 days Marking Permanency MIL-STD-202, Method 215. Laser engraved. Typical Frequency Response MERCURY Page 2 of 3 Date: May 1, 2008 Rev. 0 Monolithic Crystal Filter – Surface Mount Model “21MQ7.5A”, 2 pole, 21.4 MHz, 5x7x1.3 mm MERCURY Since 1973 21MQ7.5A TEST CIRCUIT: ( 850 ) R-Ro ( 850 ) R-Ro Filter L.M. Ro C (6.0 pF) PACKAGE DIMENSIONS AND SUGGESTED PAD LAYOUT 0.7 2.60 6 1 6.0 1.3 ±0.1 4.6 typ. bottom view 25.4 5 2 2.54 typ. 5.0±0.2 4 3 2.0 1.20 1.2 typ. 7.0±0.2 Unit: mm 1.0 C (6.0 pF) 4.0 S.G. Ro Pad 3 and 6: MCF in / out Pad 1,2,4,5 and metal lid: Ground RECOMMENDED SOLDER REFLOW PROFILE: Topside temperature of board to be 260°C min. and 270°C max. Temperature ( °C) 260 250 240 Peak Temperature: 260°C max. and 10 sec. max. Time within 5°C of actual peak: 20 to 40 sec. max. Liquidus Temperature 200 150 Flux Activation Temperature 100 50 Pre-heat 1 30 MERCURY 60 90 t Ram up a x. p m 6°C p dow Ra ec ma /sec n at 20~40 sec. /s ma 3°C x. Soaking temp: 140°C~225°C Soaking time: 60~120 sec. Reflow Zone Soaking Zone 30~60 sec. Pre-heat 2 Cooling 120 150 180 Page 3 of 3 210 240 270 300 330 Date: May 1, 2008 Time (sec) Rev. 0