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Difficulty: MediumTransistors

In standard electronic schematic symbols for bipolar junction transistors (BJTs), the directional arrow indicating current flow is positioned on the emitter terminal.

Answer: Answer

Answer

True. The directional arrow in a BJT schematic symbol is always located on the emitter terminal.
The statement is true because electronic drafting standards universally position the current direction arrow on the emitter terminal of a BJT. This arrow serves two primary purposes: it distinguishes the emitter lead from the collector lead, and its direction (pointing out for NPN, pointing in for PNP) identifies the polarity type of the transistor.

Step-by-Step Solution

1
Identify the standard terminals of a bipolar junction transistor (BJT).
A BJT has three terminals: base, collector, and emitter.
Recognizing the physical and schematic lead names is necessary to evaluate the statement.
2
Recall the schematic drawing conventions used to represent BJTs.
The base is drawn as a vertical bar, the collector is an un-arrowed diagonal branch, and the emitter is a diagonal branch with an arrow.
Standard electronics symbology uses the arrow to indicate the direction of conventional current flow through the device.
3
Verify the terminal location of the identifying arrow.
The arrow is placed exclusively on the emitter terminal for both NPN and PNP configurations.
The arrow differentiates the emitter from the collector and establishes the transistor type (pointing outward for NPN, inward for PNP).

Key Concept

BJT Schematic Symbol Conventions
Estimated Time:45s
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Topics

Transistors

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