01 of 03 ztby 375- 250 khz ceramic resonators surface mountable ceramic resonators surface mountable formed leads ceramic resonators (murata csbf compatible) preview token manufactures a broad range of high quality ceramic resonators covering both the khz and mhz frequency ranges and a full range of industry standard through hole and surface mount resonators both with and without internal capacitors. the high quality and extensive coverage of this product line allows optimum design of almost any oscillating circuit.wide variety of applications. the surface mountable ceramic resonators (ztby) is one of ztb device series with the frequency range of 375 khz to 1,250 khz. initial frequency tolerance is 0.5% which compares very favorably to the norminal 2% ~ 3% requirements of one chip microprocessors. stability and aging tolerance narrows to 0.3%. the ztby resonator provides reliable start up and stable oscillation in microprocessor circuits across a wide variety of applications. the ztby ceramic resonators stand between quartz crystal oscillators and lc/rc oscillators in regard to accuracy but are considerably smaller, require no adjustments, have improved start-up times, and are low in cost. the ztby oscillation is dependent upon mechanical resonance associated with their piezoelectric crystalline structure and utilizes the area vibration mode of the piezoelectric element. token ztby resonators conform to the rohs directive. application of specifc designs also available including different tighter tolerances specifcation adjusted to frequency requirements. please contact our sales for more information. t oke n version 2010 http://www.token.com.tw/ rfq token.com.tw
02 of 03 ztby 375- 250 khz ceramic resonators frequency range (khz) w width t thickness h height s lead space t 1 t 2 375~429 8.0 3.5 9.0 5.0 1.0 0.15 430~509 7.5 3.3 8.5 5.0 1.1 0.15 510~699 7.0 3.0 8.5 5.0 1.1 0.15 700~1250 5.0 2.2 6.0 2.5 0.8 0.12 w t h s 2.0 0 +0.1 -0.4 t 1 0.1 t 2 0.03 1.0 ztb 455y ? part number frequency accuracy (at 25c) resonant impedance () stability in temperature (-20c~+80c)(%) aging for 10 years (%) load capacitance (pf) c1 c2 ztb375 ~ 429y 2khz 20 0.3 0.3 120 470 ztb430 ~ 509y 2khz 20 0.3 0.3 100 100 ztb510 ~ 699y 2khz 30 0.3 0.3 100 100 ztb700 ~ 999y 0.5% 70 0.3 0.3 100 100 ztb1000 ~ 1250y 0.5% 100 0.3 0.3 100 100 technical characteristics dimensions (unit: mm tolerance: 0.3mm) t oe version 2010 http://www.token.com.tw/ rfq token.com.tw
03 of 03 ztby 375- 250 khz ceramic resonators back to 1st page - ceramic surface mountable ceramic resonators v dd ic ic output 1m x c 2 c 1 ic:1/6tc4069ubp2 x: ceramic resonator v dd :+5v c 1 c 2 :load capacitance ? ? code 3dfndh 3 bulk tr taping reel ztb ? ? ? 3dw1eh ? center frequency (khz) ? smd type ? 3dfndl 455 y p ztby resonator seection - test circuit or os ic ho to orders loadin capacitor c1 c2 the stability of the oscillation circu it is mainly determined by the c1 & c2 values. if the load capacitance is too small, unstable oscillation will occur because of oscillation waveform distortion. if too high, a stop in oscillation can be expected. when comparing the same ic, oscillation circuits with lower frequencies require higher capacitance. feedback resistor (r 1m): a feedback resistor is used to determine the oscillation circuit bias. the feedback resistance will contrib - ute to instability if it is too large by reducing feedback. conversely, if it is too small, increases in current will be realized thereby reducing gain. recent developments in ic design allows for the integration of the feedback resistor in many cases. token engineers can help with the circuit design if needed. (ztby) resonator optimization - ic evaluations tolerance is determined by the design of the resonator. however stability and correlation is determined by the ic evaluation. the microcontroller is evaluated with the ceramic resonators to determine the best pos - sible circuit conditions to achieve stability and stable oscillation. in addition, frequency correlation is measured to meet the tight initial frequency tolerance required. for the wlkwwrohdfhhvrdwrvwkh,&hydodwlrvwehfrsohwhrwkhdoflflwerdodrw 7khdo circuit boards provide the most accurate measurement of the frequency correlation. this measurement will account for the effects of stray capacitance on the oscillation frequency. once the correlation is determined the frequency of the resonator is adjusted to compensate for the correlation. t oke n version 2010 http://www.token.com.tw/ rfq token.com.tw
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