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2N4949 - PN UNIJUNCTION TRANSISTORS

Download the 2N4949 datasheet PDF. This datasheet also covers the 2N4948 variant, as both devices belong to the same pn unijunction transistors family and are provided as variant models within a single manufacturer datasheet.

Key Features

  • Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
  • Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (2N4948-DigitronSemiconductors.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number 2N4949
Manufacturer Digitron Semiconductors
File Size 670.47 KB
Description PN UNIJUNCTION TRANSISTORS
Datasheet download datasheet 2N4949 Datasheet

Full PDF Text Transcription for 2N4949 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for 2N4949. For precise diagrams, and layout, please refer to the original PDF.

2N4948, 2N4949 High-reliability discrete products and engineering services since 1977 PN UNIJUNCTION TRANSISTORS FEATURES  Available as “HR” (high reliability) screened ...

View more extracted text
TRANSISTORS FEATURES  Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.  Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix. MAXIMUM RATINGS Rating Symbol Value Unit RMS power dissipation(1) PD 360 mW RMS emitter current Peak pulse emitter current(2) Ie 50 mA ie 1.0 Amp Emitter reverse voltage VB2E 30 Volts Storage temperature range Tstg -65 to 200 °C Note 1: Derate 2.4mW/°C increase in ambient temperature. Total power dissipation must be limited by external circuitry.

📁 Similar Datasheet

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