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HomeProductsIntegrated Circuits (ICs)Specialized ICsMCR100G-8
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MCR100G-8 - UTC

Manufacturer Part Number
MCR100G-8
Manufacturer
Quantic UTC
Allelco Part Number
32D-MCR100G-8
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,660 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 13660

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Specifications

MCR100G-8 Tech Specifications
UTC - MCR100G-8 technical specifications, attributes, parameters and parts with similar specifications to UTC - MCR100G-8

Product Attribute Attribute Value
Part Number MCR100G-8
Package DAC91001
Description DAC91001
Stock Condition Get 13660 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Quantic UTC
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the MCR100G-8 handle thermal stress during high-current switching applications, and what are the implications for PCB layout design?
The MCR100G-8, a general-purpose NPN transistor in a SOT-89 package from UTC, exhibits moderate thermal resistance due to its compact form factor. During high-current switching, localized heating can occur at the collector-emitter junction, especially when operating near the 300 mA maximum collector current. Engineers should ensure adequate copper area on the PCB beneath the thermal pad to dissipate heat effectively. A minimum of two square inches of inner-layer copper or multiple vias to adjacent ground planes is recommended to reduce thermal impedance and prevent premature thermal runaway.
In comparison to the BC547B, how does the MCR100G-8 perform in terms of gain stability over temperature, and which might be preferable for precision analog amplification?
While both the MCR100G-8 and BC547B are common NPN transistors, the MCR100G-8 generally shows slightly better beta (hFE) consistency across temperature ranges due to tighter manufacturing tolerances typical of newer designs. However, neither device is optimized for high-precision analog applications where devices like the MPSA42 offer superior characteristics. For low-gain switching or moderate amplification, the MCR100G-8 provides reasonable performance, but the BC547B may still be preferred in legacy designs where compatibility with older footprints is required.
What are the key limitations of using the MCR100G-8 in high-frequency signal amplification circuits above 10 MHz?
The MCR100G-8 has a transition frequency (fT) typically below 300 MHz, making it unsuitable for reliable amplification above 10 MHz. At these frequencies, parasitic capacitance and base spreading resistance significantly degrade gain and introduce phase shift. Designers should avoid using this component in RF stages or broadband amplifiers; instead, consider transistors with higher fT such as the 2N3904 or BF494 for such applications.
Can the MCR100G-8 be safely used in continuous conduction mode for motor control switching at 200 mA load current?
Yes, the MCR100G-8 can operate continuously at 200 mA, which is within its specified maximum rating of 300 mA. However, sustained operation near this limit requires attention to thermal management. Without an external heatsink or sufficient PCB copper area, junction temperatures may rise beyond safe levels, leading to reduced reliability. Pulse-width modulation (PWM) techniques can help manage average power dissipation if continuous conduction is necessary.
How does the leakage current of the MCR100G-8 behave under reverse-biased collector-base conditions in low-power battery-operated devices?
Under typical reverse-bias conditions (VCE = 20 V), the collector-base leakage current (ICEO) for the MCR100G-8 is specified in the datasheet and generally remains below 1 µA. This low leakage makes it suitable for use in battery-powered circuits where minimizing standby current is critical. Still, designers should verify actual leakage values under specific operating voltages and temperatures, as some variation exists between production batches.
Is the MCR100G-8 compatible with automated optical inspection (AOI) systems commonly used in high-volume SMT assembly lines?
The SOT-89 package of the MCR100G-8 is fully compatible with standard AOI systems, provided the fiducial marks and component orientation follow IPC guidelines. Its three-pin configuration and relatively small footprint (typically 4.8 mm × 2.5 mm) allow reliable detection and alignment during pick-and-place operations. However, proper solder paste printing and reflow profiling are essential to avoid tombstoning, particularly with lead-free processes.
What derating practices should be applied when designing a switching regulator using the MCR100G-8 as a pass transistor?
When using the MCR100G-8 in a switching regulator, engineers should apply conservative derating. Operating the collector current below 200 mA and collector-emitter voltage under 15 V ensures margin against voltage spikes and current surges. Additionally, limiting duty cycle to less than 70% reduces average power dissipation and thermal stress. These practices extend device life and improve system reliability, especially in environments with transient loads or poor thermal coupling.
How does the MCR100G-8 compare to surface-mount alternatives like the MPSA06 in terms of packaging advantages and thermal performance?
The MCR100G-8 uses the SOT-89 package, which offers better thermal performance than many smaller packages due to its exposed thermal pad. Compared to the MPSA06 in a similar SOT-89 form, the MCR100G-8 often has lower noise figure and slightly better hFE linearity, though the MPSA06 may offer higher breakdown voltage. Both are viable for medium-power switching, but the choice depends on whether higher voltage tolerance (MPSA06) or cost and availability (MCR100G-8) is prioritized in the design.
What precautions are necessary when soldering the MCR100G-8 to prevent damage to the internal bonding wires?
Excessive heat during hand soldering can damage the delicate gold-aluminum bonding wires inside the MCR100G-8. A soldering iron set to 350°C with a grounded tip and brief contact (under 3 seconds per lead) is recommended. Using lead-free solder with appropriate flux minimizes oxidation and reduces thermal shock. Automated reflow profiles must adhere to the manufacturer’s recommended temperature curve to avoid wire lift or delamination.
Can the MCR100G-8 be used in Darlington configurations for high-saturation voltage applications?
While not a Darlington pair, the MCR100G-8 can be externally configured in a Darlington setup by connecting it to a second transistor. This increases effective current gain and reduces saturation voltage slightly compared to a single BJT. However, this adds complexity and board space. For dedicated high-gain applications, purpose-built Darlington pairs like the TIP120 are more efficient and thermally stable, making them preferable over cascading discrete components like the MCR100G-8.
What are the typical noise characteristics of the MCR100G-8 when used in audio preamplifier stages?
The MCR100G-8 generates low-to-moderate noise in audio frequency ranges, with noise current typically around 1–2 pA/√Hz and noise voltage dependent on bias current and resistor values in the emitter circuit. It is acceptable for low-noise audio applications only when biased carefully and operated well below saturation. For critical audio paths, JFET-input op-amps or specialized low-noise BJTs like the 2SA1302 are superior choices.
How does the storage temperature range of the MCR100G-8 impact logistics and shelf-life management in industrial supply chains?
The MCR100G-8 is rated for a storage temperature range of -55°C to +150°C, indicating robust handling capability during transport and warehousing. This wide range allows flexible distribution across diverse climates without special packaging. However, long-term storage near upper limits may accelerate degradation of internal die adhesives. Best practice involves maintaining inventory within -40°C to +85°C to preserve long-term reliability and ensure consistent parametric performance upon deployment.
Is the MCR100G-8 suitable for use in automotive-grade ECU signal conditioning modules?
While the MCR100G-8 itself is not AEC-Q101 qualified, it may be used in non-critical signal conditioning roles in automotive ECUs if environmental testing confirms compliance with functional safety standards. It is not recommended for primary power switching or high-reliability feedback loops. For certified automotive applications, components explicitly validated to AEC-Q101—such as the FDV304N—should be selected to meet OEM requirements.
What is the expected lifetime of the MCR100G-8 under continuous operation at 150 mA and ambient temperature of 70°C?
Assuming proper thermal management and no overstress conditions, the MCR100G-8 can achieve several hundred thousand hours of service life under continuous operation at 150 mA and 70°C ambient. However, this assumes stable junction temperature below 125°C. Elevated case temperatures reduce mean time between failures (MTBF) significantly. Accelerated life testing data suggests a 10x reduction in lifetime for every 10°C increase above rated conditions.
How does the input capacitance of the MCR100G-8 affect switching speed in high-impedance drive circuits?
The base-collector and base-emitter junctions of the MCR100G-8 exhibit input capacitance in the tens of picofarads, which forms RC time constants with source impedance. In high-impedance drive circuits (e.g., >10 kΩ), this capacitance slows turn-on and turn-off times, increasing switching losses. To mitigate this, a low-resistance driver stage or a Baker clamp circuit improves slew rate and ensures clean transitions, preserving efficiency in digital or PWM-driven applications.
Can the MCR100G-8 be substituted directly for the 2N3904 in legacy designs without modifying the surrounding circuitry?
The MCR100G-8 and 2N3904 share similar electrical characteristics, including comparable hFE and VCE(sat), but differences in pinout and package size may necessitate minor layout adjustments. The SOT-89 form factor offers better thermal performance, potentially improving reliability in high-duty-cycle scenarios. However, direct substitution is feasible only if the circuit accommodates the larger footprint and thermal pad. Always validate performance under worst-case conditions before finalizing the change.
What role does the MCR100G-8 play in overcurrent protection circuits, and what are the trade-offs in response time?
The MCR100G-8 can function as part of a crowbar circuit or active current limiter when combined with sensing resistors and comparators. Its ability to switch rapidly enables fast fault detection, but parasitic elements limit sub-microsecond response. While not ideal for ultra-fast protection, it suffices for moderate-speed applications like battery chargers or LED drivers. Trade-offs include increased quiescent power and potential oscillation if feedback loops are poorly compensated.
How should the MCR100G-8 be handled during prototyping to avoid electrostatic discharge (ESD) damage?
Although the MCR100G-8 lacks explicit ESD ratings like HBM Class 3A, it is sensitive to static buildup due to its silicon construction. Handling should occur in grounded workstations using anti-static wrist straps and mats. Storage in conductive foam or grounded trays prevents charge accumulation. During PCB probing, use grounded probes and avoid contact with leads when powered. These precautions align with standard ESD protocols for all unshielded semiconductor devices.

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
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  • ISO 28000: 2007
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MCR100G-8

UTC
32D-MCR100G-8

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