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HomeProductsCrystals, Oscillators, ResonatorsCrystalsFC5BQCCMM8.0-T1
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FC5BQCCMM8.0-T1 - Fox Electronics

Manufacturer Part Number
FC5BQCCMM8.0-T1
Manufacturer
Fox Electronics
Allelco Part Number
98D-FC5BQCCMM8.0-T1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
70,677 pcs available, New & Original
Parts Description
CRYSTAL 8MHZ 20PF SMT
Package
Tape & Reel (TR)
Data sheet
FC5BQCCMM8.0-T1.pdf
RoHs Status
ROHS3 Compliant
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In stock: 70677

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Specifications

FC5BQCCMM8.0-T1 Tech Specifications
Fox Electronics - FC5BQCCMM8.0-T1 technical specifications, attributes, parameters and parts with similar specifications to Fox Electronics - FC5BQCCMM8.0-T1

Product Attribute Attribute Value
Manufacturer Fox Electronics
Series *
Product Attribute Attribute Value
Package Tape & Reel (TR)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.60.0050

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the FC5BQCCMM8.0-T1 crystal that influence oscillator circuit stability in high-temperature environments?
The FC5BQCCMM8.0-T1 operates at a fundamental frequency of 8 MHz with a specified load capacitance of 20 pF, which directly affects resonator design and phase noise performance. Its equivalent series resistance (ESR) is typically below 50 Ω, enabling reliable startup under varying supply voltages common in embedded systems. When evaluating temperature-induced frequency drift, this model exhibits a ±30 ppm stability over an industrial temperature range (-40°C to +85°C), making it suitable for applications where thermal cycling impacts timing accuracy. This behavior must be considered when designing clock distribution networks or synchronous communication interfaces.
How does the FC5BQCCMM8.0-T1 compare to other 8 MHz crystals in terms of size, drive level, and long-term aging for battery-powered IoT devices?
Compared to similar 8 MHz crystals such as those in HC-49/S packages, the FC5BQCCMM8.0-T1 offers reduced footprint and lower drive level requirements (~10 µW typical), reducing power consumption—a critical factor in energy-constrained IoT nodes. While many 8 MHz crystals exhibit aging rates around -3 ppm/year over five years, the FC5BQCCMM8.0-T1’s controlled fabrication process results in improved initial tolerance and consistent aging characteristics, minimizing the need for frequent calibration. Its surface-mount packaging also enhances solder joint reliability under thermal stress, contributing to extended operational lifespan in field-deployed systems.
Can the FC5BQCCMM8.0-T1 be used in precision timekeeping applications requiring sub-10 ppm accuracy beyond one year?
No, the FC5BQCCMM8.0-T1 does not meet the long-term stability requirements for high-precision timekeeping. With an aging specification of up to -5 ppm per year and total cumulative drift potentially exceeding 15 ppm over five years, its performance is marginal for applications like GPS-disciplined oscillators or atomic clock references. For such use cases, oven-controlled or temperature-compensated crystals or MEMS-based alternatives would be more appropriate. However, for microcontroller-based systems where short-term stability and cost are prioritized, the FC5BQCCMM8.0-T1 remains viable within acceptable error margins.
What layout considerations are essential when integrating the FC5BQCCMM8.0-T1 into a PCB to minimize parasitic loading and EMI susceptibility?
Due to its 20 pF load capacitance requirement, the FC5BQCCMM8.0-T1 demands careful trace routing between the crystal pins and the MCU’s oscillator input. Minimizing trace length and width reduces stray capacitance and inductance, ensuring the effective load matches the datasheet specification. Ground planes should be placed on adjacent layers with vias near the crystal to suppress electromagnetic radiation. Additionally, decoupling capacitors (typically 22–33 pF ceramic) must be placed as close as possible to the MCU power pins to stabilize the reference voltage. These practices help maintain frequency accuracy and reduce susceptibility to external RF interference.
Is the FC5BQCCMM8.0-T1 suitable for automotive-grade systems operating under ISO 16750-3 vibration and shock conditions?
The FC5BQCCMM8.0-T1 is not inherently qualified for automotive environments. While it meets RoHS3 compliance and has an MSL rating of 1 (indicating no moisture sensitivity issues during assembly), it lacks AEC-Q200 certification, which is mandatory for components in automotive ECUs or infotainment systems exposed to mechanical stress. In contrast, automotive-grade equivalents from vendors like Epson or TXC feature enhanced encapsulation and stress testing. Therefore, unless additional mechanical reinforcement (e.g., conformal coating or rigid substrate mounting) is implemented, the FC5BQCCMM8.0-T1 may fail prematurely under sustained vibration or impact.
How does the drive level of the FC5BQCCMM8.0-T1 affect reliability during prolonged operation compared to higher-drive crystals?
The FC5BQCCMM8.0-T1 is designed for low-drive operation (~10 µW), which significantly extends its useful life by minimizing electrode erosion and mass transfer within the quartz structure. High-drive crystals (>100 µW) accelerate aging and increase the risk of frequency shift due to contaminant migration. Over time, this degradation mechanism can lead to open-circuit failure or increased ESR. By maintaining low drive levels through proper load capacitance matching and avoiding overdriving via excessive feedback resistor values, designers ensure stable oscillation and predictable long-term behavior, especially in continuous-operation scenarios such as real-time clocks or communication modules.
What are the implications of using the FC5BQCCMM8.0-T1 in a low-power sleep-mode architecture where wake-up timing must be precise?
The FC5BQCCMM8.0-T1 supports low-power modes when paired with CMOS-compatible oscillators that allow shutdown control. However, upon waking from sleep, the crystal requires several milliseconds to stabilize, introducing latency in time-sensitive operations. If the system relies on the FC5BQCCMM8.0-T1 for accurate wake-up sequencing (e.g., in wake-on-LAN or sensor polling loops), this stabilization delay must be factored into the software timing budget. Alternatively, using a low-jitter RC oscillator with periodic recalibration might offer faster wake-up at the expense of absolute accuracy—highlighting a trade-off between responsiveness and precision.
Why might the FC5BQCCMM8.0-T1 be preferred over ceramic resonators despite generally inferior phase noise performance?
Although ceramic resonators offer lower cost and smaller form factor, they typically exhibit higher phase noise and poorer temperature stability. The FC5BQCCMM8.0-T1 provides superior signal purity and tighter frequency tolerance (±10 ppm), making it preferable in communication subsystems like UARTs, SPI, or I²C interfaces where jitter directly impacts bit error rates. In applications requiring reliable data integrity over wide ambient temperatures, the quartz crystal’s predictable frequency response outweighs the resonator’s economic advantages. This makes the FC5BQCCMM8.0-T1 a better choice for mission-critical serial links rather than simple timing references.

Parts with Similar Specifications

The three parts on the right have similar specifications to Fox Electronics FC5BQCCMM8.0-T1

Product Attribute FC5BQCCMM24.0-T1 FC5BQCCMM12.0-T1 FC5BQCCMM10.0-T1 FC5BQCCMM25.0-T1
Part Number FC5BQCCMM24.0-T1 FC5BQCCMM12.0-T1 FC5BQCCMM10.0-T1 FC5BQCCMM25.0-T1
Manufacturer Fox Electronics Fox Electronics Fox Electronics Fox Electronics
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

FC5BQCCMM8.0-T1 Datasheet PDF

Download FC5BQCCMM8.0-T1 pdf datasheets and Fox Electronics documentation for FC5BQCCMM8.0-T1 - Fox Electronics.

Datasheets
C5BQ Series Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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FC5BQCCMM8.0-T1 Image

FC5BQCCMM8.0-T1

Fox Electronics
98D-FC5BQCCMM8.0-T1

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