Overview
The STN851 is a low voltage fast-switching NPN power transistor manufactured by STMicroelectronics. It is produced using Planar Technology with a "Base Island" layout, which results in exceptional high gain performance and very low saturation voltage. This transistor is designed for high efficiency in low voltage switching applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-base voltage (VCBO) | 150 | V |
| Collector-emitter voltage (VCEO) | 60 | V |
| Emitter-base voltage (VEBO) | 7 | V |
| Collector current (IC) | 5 | A |
| Collector peak current (ICM) | 10 | A (tP < 5 ms) |
| Base current (IB) | 1 | A |
| Base peak current (IBM) | 2 | A (tP < 5 ms) |
| Total dissipation at Tamb = 25 °C (Ptot) | 1.6 | W |
| Storage temperature (Tstg) | -65 to 150 | °C |
| Max. operating junction temperature (TJ) | 150 | °C |
| Thermal resistance junction-ambient (Rthj-amb) | 78 | °C/W |
| Collector-emitter saturation voltage (VCE(sat)) | 10 - 500 | mV (depending on IC and IB) |
| Base-emitter saturation voltage (VBE(sat)) | 1 - 1.15 | V (depending on IC and IB) |
| DC current gain (hFE) | 30 - 350 | (depending on IC and VCE) |
| Transition frequency (fT) | 130 | MHz |
Key Features
- Very low collector to emitter saturation voltage
- Fast-switching speed
- High current gain characteristic
Applications
- Emergency lighting
- Voltage regulators
- Relay drivers
- High efficiency low voltage switching applications
Q & A
- What is the collector-base voltage (VCBO) of the STN851?
The collector-base voltage (VCBO) of the STN851 is 150 V.
- What is the maximum collector current (IC) of the STN851?
The maximum collector current (IC) of the STN851 is 5 A.
- What is the thermal resistance junction-ambient (Rthj-amb) of the STN851?
The thermal resistance junction-ambient (Rthj-amb) of the STN851 is 78 °C/W.
- What are the key features of the STN851?
The key features include very low collector to emitter saturation voltage, fast-switching speed, and high current gain characteristic.
- What are some typical applications of the STN851?
Typical applications include emergency lighting, voltage regulators, relay drivers, and high efficiency low voltage switching applications.
- What is the maximum operating junction temperature (TJ) of the STN851?
The maximum operating junction temperature (TJ) of the STN851 is 150 °C.
- What is the package type of the STN851?
The STN851 is packaged in SOT-223.
- Is the STN851 RoHS compliant?
- What is the transition frequency (fT) of the STN851?
The transition frequency (fT) of the STN851 is 130 MHz.
- Where can I purchase the STN851?
The STN851 can be purchased directly from the STMicroelectronics eStore or through authorized distributors.
