Overview
The STD901T is a high voltage NPN transistor produced by STMicroelectronics, designed in a monolithic special Darlington configuration. This transistor is specifically tailored for applications requiring high voltage and current handling, such as electronic ignition systems for small engines, including scooters, lawnmowers, and chainsaws.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-emitter voltage (VBE = 0) | 500 | V |
| Collector-emitter voltage (IB = 0) | 350 | V |
| Emitter-base voltage (IC = 0) | 5 | V |
| Collector current | 4 | A |
| Collector peak current (tp < 5 ms) | 8 | A |
| Base current | 0.5 | A |
| Base peak current (tp < 5 ms) | 2.5 | A |
| Total power dissipation at TC = 25 °C | 35 | W |
| Operating junction temperature range | -65 to 150 | °C |
| Thermal resistance, junction-to-case | 3.57 | °C/W |
| DC current gain (IC = 2 A, VCE = 2 V) | 1800 - 3800 | |
| Collector-emitter saturation voltage (IC = 2 A, IB = 20 mA) | 2 | V |
| Base-emitter saturation voltage (IC = 2 A, IB = 20 mA) | 1.8 | V |
Key Features
- High voltage special Darlington structure: Designed to handle high voltage applications.
- Very rugged Bipolar technology: Ensures robust performance under demanding conditions.
- High DC current gain: Provides efficient current amplification.
Applications
The STD901T is primarily used in electronic ignition systems for small engines, such as:
- Scooters
- Lawnmowers
- Chainsaws
Q & A
- What is the STD901T transistor used for?
The STD901T is used in electronic ignition systems for small engines, such as scooters, lawnmowers, and chainsaws.
- What is the collector-emitter voltage rating of the STD901T?
The collector-emitter voltage rating is 500 V when VBE = 0 and 350 V when IB = 0.
- What is the maximum collector current of the STD901T?
The maximum collector current is 4 A, with a peak current of 8 A for pulses less than 5 ms.
- What is the thermal resistance, junction-to-case for the STD901T?
The thermal resistance, junction-to-case is 3.57 °C/W.
- What is the DC current gain of the STD901T?
The DC current gain is between 1800 and 3800 when IC = 2 A and VCE = 2 V.
- What is the collector-emitter saturation voltage of the STD901T?
The collector-emitter saturation voltage is 2 V when IC = 2 A and IB = 20 mA.
- What is the base-emitter saturation voltage of the STD901T?
The base-emitter saturation voltage is 1.8 V when IC = 2 A and IB = 20 mA.
- What are the package options for the STD901T?
The STD901T is available in DPAK (TO-252) packages.
- Is the STD901T RoHS compliant?
- What is the operating junction temperature range of the STD901T?
The operating junction temperature range is -65 to 150 °C.
