AEC-Q200 grade clock crystal for automotive platforms
The ECS-245.7-12-33Q-JES-TR: The ECX-33Q series carries AEC-Q200 qualification — ECS Inc. targets this crystal at automotive ECU and module programs where the thermal and vibration profile demands more than commercial-grade screening. 24.576 MHz is a standard baud-rate crystal — it divides cleanly to common UART rates including 115200 bps with zero error at typical divisor ratios, which is why it shows up in CAN, RS-485 transceivers, and timing-reference positions across automotive and industrial comms hardware.
Combined tolerance stack and frequency stability
±20 ppm initial tolerance plus ±50 ppm stability over temperature gives a combined ±70 ppm envelope across the full operating range — acceptable for CAN and RS-485 clocking, though any design targeting sub-100 ppm clock accuracy should verify the total budget against the actual load capacitance and board parasitics. Load capacitance is specified at 12 pF — this is the external shunt capacitance value the crystal expects on both pins; any mismatch between the board trace capacitance and this target shifts the actual operating frequency away from the nominal 24.576 MHz, and that shift stacks directly on top of the ±70 ppm tolerance.
4-SMD package, drive level, and board integration
40 Ω ESR is the equivalent series resistance figure — this determines the drive level the oscillator circuit must supply; exceeding the maximum drive level specified by ECS for this part accelerates crystal aging, so the oscillator startup and steady-state drive should be verified against the crystal datasheet limits. Fundamental-mode operation is the correct selection for this frequency — overtone modes are required only above roughly 30 MHz, so the fundamental designation here is expected and imposes no additional filter or matching constraint on the oscillator layout.
Sourcing — active status, packaging options
Offered in Tape & Reel and Cut Tape — production quantities quote to order; samples and small-lot availability are confirmed at RFQ.