3.57MHz Quartz Crystal Resonator – HC 49S Small Crystal Oscillator

Overview & Features The 3.579545MHz (commonly designated as 3.57MHz or 3.58MHz) Small Quartz Crystal Resonator is a high-stability, precision passive frequency-control component designed for embedded timing, telecommunications, and legacy video circuitry. Built using an AT-cut quartz blank housed within a hermetically sealed, low-profile HC-49S (HC-49US) metal can, it delivers consistent, low-aging clock oscillations while occupying minimal vertical clearance on crowded PCBs. Widely recognized as the standard NTSC color burst subcarrier frequency, this 3.579545MHz crystal is an industry-standard component for dual-tone multi-frequency (DTMF) tone generation, modem decoders, radio transceivers, and microcontroller system clocks. The rugged two-pin through-hole package ensures high mechanical shock resistance, low equivalent series resistance (ESR), and dependable thermal stability across standard operating temperatures. Also searched as: 3.579545mhz crystal, 3.57 mhz small crystal, hc-49s 3.579mhz crystal oscillator, color burst crystal, dtmf crystal 3.58mhz, 2-pin quartz resonator. Technical Specifications Nominal Frequency: 3.579545 MHz (3.57 MHz) Package / Case: HC-49S / HC-49US (Low-Profile Metal Casing) Mounting Type: 2-Pin Through-Hole (Radial Leads) Lead Pitch: 4.88mm Vibration / Cut Mode: AT-Cut Fundamental Load Capacitance (CL): 18pF – 20pF (Typical) Frequency Tolerance: ±20 ppm / ±30 ppm (at 25°C) Frequency Stability: ±30 ppm / ±50 ppm (-20°C to +70°C) Equivalent

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