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BULB49DT4 - High voltage fast-switching NPN power transistors

Download the BULB49DT4 datasheet PDF. This datasheet also covers the BUL49D variant, as both devices belong to the same high voltage fast-switching npn power transistors family and are provided as variant models within a single manufacturer datasheet.

General Description

The devices are manufactured using high voltage multi-epitaxial planar technology for high switching speeds and high voltage capability.

The devices are designed for use in electronic transformer for halogen lamps.

Figure 1.

Key Features

  • High voltage capability.
  • Low spread of dynamic parameters.
  • Minimum lot-to-lot spread for reliable operation.
  • Very high switching speed.
  • High ruggedness.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (BUL49D_STMicroelectronics.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by STMicroelectronics

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
BUL49D BULB49D High voltage fast-switching NPN power transistors Features ■ High voltage capability ■ Low spread of dynamic parameters ■ Minimum lot-to-lot spread for reliable operation ■ Very high switching speed ■ High ruggedness Applications ■ Electronic transformers for halogen lamps ■ Flyback and forward single transistor low power converters Description The devices are manufactured using high voltage multi-epitaxial planar technology for high switching speeds and high voltage capability. The devices are designed for use in electronic transformer for halogen lamps. 3 2 1 TO-220 3 2 1 TO-220FP 3 1 D2PAK 123 I2PAK Figure 1. Internal schematic diagram Table 1.