MMDT521LW-AQ Overview
The MMDT521LW-AQ is a high-performance NPN bipolar junction transistor designed for low-power switching and amplification applications. Featuring a compact SOT-23 package, it supports collector currents up to 150mA with a maximum collector-emitter voltage of 40V. This transistor delivers reliable operation with low saturation voltage and fast switching times, making it ideal for signal amplification and switching in compact electronic circuits. Its robust electrical characteristics ensure stability across a wide temperature range. For engineers and sourcing specialists seeking a dependable transistor for industrial and consumer electronics, IC Manufacturer provides this device with proven quality and consistent performance.
MMDT521LW-AQ Technical Specifications
| Parameter | Specification |
|---|---|
| Transistor Type | NPN Bipolar Junction Transistor |
| Collector-Emitter Voltage (Vce) | 40 V |
| Collector Current (Ic) | 150 mA |
| Gain Bandwidth Product (fT) | 100 MHz (typical) |
| DC Current Gain (hFE) | 100 to 300 (varies by operating point) |
| Collector-Emitter Saturation Voltage (Vce(sat)) | 0.3 V (typical at Ic = 100 mA) |
| Package Type | SOT-23 Surface-Mount |
| Operating Temperature Range | -55??C to +150??C |
MMDT521LW-AQ Key Features
- Compact SOT-23 Package: Enables high-density PCB layouts and easy surface mounting for space-constrained applications.
- High Collector Current Capability: Supports up to 150mA, allowing effective switching and amplification in low-power circuits.
- Low Saturation Voltage: Minimizes power loss, enhancing overall circuit efficiency and thermal performance.
- Wide Operating Temperature Range: Ensures reliable operation in harsh environments, suitable for industrial-grade applications.
Typical Applications
- General-purpose signal amplification and low-level switching in industrial control systems, where reliable transistor performance is required.
- Switching elements in battery-powered devices due to its low saturation voltage and efficient power consumption.
- Interface drivers for microcontrollers, enabling effective control of LEDs, relays, and other low-current loads.
- Analog circuit stages requiring moderate gain and fast switching response in communication and instrumentation equipment.
MMDT521LW-AQ Advantages vs Typical Alternatives
The device offers a balanced combination of high current handling and low saturation voltage, providing superior efficiency compared to common small-signal transistors. Its compact SOT-23 package supports automated surface-mount assembly, improving manufacturing throughput and reliability. Additionally, the wide operating temperature range and stable gain characteristics enhance durability and performance in demanding industrial environments, making it a preferred choice over generic transistor alternatives.
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MMDT521LW-AQ Brand Info
The MMDT521LW-AQ is a transistor model typically associated with IC manufacturers specializing in discrete semiconductor components. This type of device is widely produced by suppliers offering robust, cost-effective bipolar junction transistors for industrial and consumer electronics. Its packaging and electrical specifications align with industry standards for small-signal transistors, ensuring broad compatibility and support. Engineers can source this transistor from reputable semiconductor distributors who provide detailed datasheets and quality assurance consistent with global manufacturing standards.
FAQ
What is the maximum collector current rating for this transistor?
The maximum collector current rating is 150mA, which allows it to handle moderate load currents typical in switching and amplification tasks within low-power electronic circuits.
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Which package type is used for this transistor, and why is it beneficial?
This transistor is housed in a SOT-23 surface-mount package, which offers a small footprint ideal for compact PCB designs and supports automated pick-and-place assembly, reducing manufacturing costs and improving reliability.
What is the typical collector-emitter saturation voltage, and how does it affect performance?
The typical collector-emitter saturation voltage is approximately 0.3V at
