sm55, sm45, sm40 crystal hc-49/us low profile crystal mounted on a surface mount plat form available in 3 heights, sm55: 5.5mm, sm45: 4.5mm, sm40: 4.0m m standard specifications calibration frequency tolerance at 25 c 3 0 ppm is standard, tighter tolerances available operating temperature range (otr) 0 to +70 c is standard, but can be extended to -40 to +85 c frequency stability (fs) over otr 5 0 ppm is standard, tighter tolerances available drive level 50 m w is standard, customer may specify aging at 25 c 5 ppm per year is standard, customer may specify 1 ppm shunt capacitance 7 pf maximum pullability oscillation maximum frequency range fundamental at cut 3rd overtone at cut part numbering guide (height/pinout) frequency in mhz temperature range sm45 e -- xx -- 70.0m consult factory for available frequencies and specs. blank: 0 to +70 c e: - 40 to +85 c 19013 36th ave. west suite h lynnwood, wa 98036, usa consult factory for lower esr load capacitance (425) 776 - 1880, fax: (425) 776 - 2760, ple - sales@pletronics.com, www.pletronics.com 37 pl tronics, inc. mechanical: inches (mm) not to scale mode (mhz) esr (ohms) not all options available for all frequencies. a special par t number may be assigned. esr values 3.200 mhz ? 70.000 mhz parallel resonance in pf ( 3 10 pf) sr = series resonance may 2002 sm55: 5.5mm/std sm45: 4.5mm/std sm40: 4.0mm/std smp55: 5.5mm/2 pad smp45: 4.5mm/2 pad smp40: 4.0mm/2 pad solder pads solder pad compatible with our sm39s and smd crystals from e pson, meiden & citizen due to part size and factory abilities, part marking may var y from lot to lot and may contain our part number or an inte rnal code. .516 (13.1) max .370 (9.4) .197 (5.0) max sm55: .217 (5.5) max sm45: .177 (4.5) max sm40: .157 (4.0) max case gnd case gnd .09 (2.4) .14 (3.6) .09 (2.2) .256 (6.5) .06 (1.6) may be specified by customer in terms of frequency shift req uired over a certain range of load capacitance (e.g. +100 ppm from cl=12 to cl=18 pf) or as motional capaci tance ( ff ) .055 (1.4) available in standard 4 pad or optional 2 pad pinout style model standard pinout (sm) .09 (2.4) .14 (3.6) .09 (2.2) .256 (6.5) .06 (1.6) optional 2 pad pinout (smp) 3.200 ? 4.999 300 5.000 ? 7.999 120 8.000 ? 11.999 70 12.000 ? 30.000 50 25.000 ? 70.000 100 packaging 24mm tape 12mm pitch
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