PRECISION TIMING & RF
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SAW filters · OCXOs · Crystal products
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别只看2492MHz：一颗3×3mm的SAW滤波器，真正难选的是后面的参数
别只看1575.42MHz：SF9868声表滤波器导入前要盯住哪些参数？
别只看1515MHz：SF9248声表滤波器参数解析
How to Source Obsolete Components Safely
Traceability and inspection steps for constrained electronic components.
Crystal Resonator Aging Explained
A practical guide to first-year aging, long-term drift and design margin.
OCXO Stability and Power Tradeoffs
How oven architecture affects warm-up, aging and steady-state consumption.