Question 1

What is 2N391?

Accepted Answer

2N391 Transistor Datasheet pdf, 2N391 Equivalent. Parameters and Characteristics

Question 2

What are the specifications of 2N391?

Accepted Answer

Key specifications include: Material of Transistor: Ge, Polarity: PNP, Maximum Collector Power Dissipation (Pc): 45 W, Maximum Collector-Base Voltage |Vcb|: 50 V, Maximum Collector-Emitter Voltage |Vce|: 40 V, Maximum Emitter-Base Voltage |Veb|: 20 V, Maximum Collector Current |Ic max|: 5 A, Max. Operating Junction Temperature (Tj): 85 °C, Forward Current Transfer Ratio (hFE), MIN: 30, Noise Figure, dB: -, Package: TO3

Question 3

What are equivalent components to 2N391?

Accepted Answer

Common equivalents include: 2N3904CSM, 2N3904DCSM, 2N3905, 2N3905CSM, 2N3906, 2N3906CSM, 2N3907, 2N3908

2N391 Transistor — Specifications & Equivalents

Key Specifications

Equivalent & Replacement Parts

Material of Transistor	Ge
Polarity	PNP
Maximum Collector Power Dissipation (Pc)	45 W
Maximum Collector-Base Voltage \|Vcb\|	50 V
Maximum Collector-Emitter Voltage \|Vce\|	40 V
Maximum Emitter-Base Voltage \|Veb\|	20 V
Maximum Collector Current \|Ic max\|	5 A
Max. Operating Junction Temperature (Tj)	85 °C
Forward Current Transfer Ratio (hFE), MIN	30
Noise Figure, dB	-
Package	TO3