2N494B - SILICON UNIJUNCTION TRANSISTORS

Digitron

Download the 2N494B datasheet PDF. This datasheet also covers the 2N489 variant, as both devices belong to the same silicon 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.
Stable operation over wide temperature range.
Low leakage current.
Low peak point current.
Guaranteed minimum pulse voltage.

📥 Download Datasheet

2N494B silicon unijunction transistors by Digitron - Datasheet Preview — Note: The manufacturer provides a single datasheet file (2N489-Digitron.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	2N494B
Manufacturer	Digitron
File Size	1.45 MB
Description	SILICON UNIJUNCTION TRANSISTORS
Datasheet	2N494B Datasheet

Full PDF Text Transcription for 2N494B (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for 2N494B. For precise diagrams, and layout, please refer to the original PDF.

2N489(A,B)-2N494(A,B) High-reliability discrete products and engineering services since 1977 SILICON UNIJUNCTION TRANSISTORS FEATURES  Available as “HR” (high reliabilit...

View more extracted text

UNIJUNCTION 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.

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More Datasheets from Digitron

Part Number	Description
2N494	SILICON UNIJUNCTION TRANSISTORS
2N494A	SILICON UNIJUNCTION TRANSISTORS
2N494C	SILICON UNIJUNCTION TRANSISTORS
2N490	SILICON UNIJUNCTION TRANSISTORS
2N490A	SILICON UNIJUNCTION TRANSISTORS
2N490B	SILICON UNIJUNCTION TRANSISTORS
2N490C	SILICON UNIJUNCTION TRANSISTORS
2N491	SILICON UNIJUNCTION TRANSISTORS
2N491A	SILICON UNIJUNCTION TRANSISTORS
2N491B	SILICON UNIJUNCTION TRANSISTORS