Overview
The STN851-A is a low voltage, fast-switching NPN power transistor manufactured by STMicroelectronics. This transistor is designed using planar technology with a 'Base Island' layout, which results in exceptional high gain performance and very low saturation voltage. It is AEC Q101 compliant, making it suitable for automotive and other demanding applications. The device is packaged in a surface-mounting SOT-223 package and is available in tape and reel format.
Key Specifications
| Symbol | Parameter | Value | Unit |
|---|---|---|---|
| VCBO | Collector-base voltage (IE = 0) | 150 | V |
| VCEO | Collector-emitter voltage (IB = 0) | 60 | V |
| VEBO | Emitter-base voltage (IC = 0) | 7 | V |
| IC | Collector current | 5 | A |
| ICM | Collector peak current (tP < 5 ms) | 10 | A |
| IB | Base current | 1 | A |
| IBM | Base peak current (tP < 5 ms) | 2 | A |
| Ptot | Total dissipation at Tamb = 25 °C | 1.6 | W |
| Tstg | Storage temperature | -65 to 150 | °C |
| TJ | Max. operating junction temperature | 150 | °C |
| VCE(sat) | Collector-emitter saturation voltage | 10 - 500 mV | mV |
| VBE(sat) | Base-emitter saturation voltage | 1 - 1.15 V | V |
| hFE | DC current gain | 30 - 350 | |
| fT | Transition frequency | 130 MHz | MHz |
Key Features
- AEC Q101 compliant, ensuring reliability in automotive and other demanding applications.
- Very low collector to emitter saturation voltage, enhancing efficiency in switching applications.
- High current gain characteristic, providing excellent performance in various circuits.
- Fast-switching speed, suitable for high-frequency applications.
- Surface-mounting SOT-223 power package in tape and reel format, facilitating easy integration into modern PCB designs.
Applications
The STN851-A is primarily used in high efficiency low voltage switching applications. Its fast-switching capabilities and low saturation voltage make it ideal for use in power management circuits, motor control systems, and other high-performance electronic devices.
Q & A
- What is the maximum collector current of the STN851-A transistor?
The maximum collector current (IC) is 5 A, with a peak current (ICM) of 10 A for pulses less than 5 ms.
- What is the collector-emitter saturation voltage of the STN851-A?
The collector-emitter saturation voltage (VCE(sat)) ranges from 10 to 500 mV depending on the collector and base currents.
- Is the STN851-A AEC Q101 compliant?
- What is the transition frequency of the STN851-A transistor?
The transition frequency (fT) is 130 MHz at VCE = 10 V and IC = 100 mA.
- What is the maximum operating junction temperature of the STN851-A?
The maximum operating junction temperature (TJ) is 150 °C.
- What is the package type of the STN851-A transistor?
The STN851-A is packaged in a surface-mounting SOT-223 package and is available in tape and reel format.
- What are the typical applications of the STN851-A transistor?
The STN851-A is used in high efficiency low voltage switching applications, such as power management circuits and motor control systems.
- What is the thermal resistance junction-ambient of the STN851-A?
The thermal resistance junction-ambient (Rthj-amb) is 78 °C/W when the device is mounted on a PCB area of 1 cm2.
- What is the base-emitter saturation voltage of the STN851-A transistor?
The base-emitter saturation voltage (VBE(sat)) is between 1 and 1.15 V.
- What is the DC current gain of the STN851-A transistor?
The DC current gain (hFE) ranges from 30 to 350 depending on the collector current and voltage conditions.
