INDUSTRY COMPONENT

Active Device(s) (Transistor)

Semiconductor device used as an active switching or amplifying element in voltage controlled oscillators.

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Component Specifications

Definition
A transistor is a semiconductor device that regulates current or voltage flow and acts as a switch or gate for electronic signals in voltage controlled oscillators (VCOs). In VCO applications, transistors serve as the active element that generates and controls oscillation frequency based on input voltage, typically functioning in oscillator circuits like Colpitts, Hartley, or ring oscillators to produce stable, tunable frequency outputs.
Working Principle
Transistors in VCOs operate by using voltage input to control the oscillation frequency. In bipolar junction transistors (BJTs) or field-effect transistors (FETs), the input voltage modulates the transistor's conductivity, altering the resonant frequency of the LC or RC tank circuit. This voltage-to-frequency conversion enables precise frequency tuning, with the transistor amplifying the signal to sustain oscillations and provide output through collector/drain terminals.
Materials
Semiconductor materials: Silicon (Si), Gallium Arsenide (GaAs), or Silicon Germanium (SiGe) for high-frequency applications; package materials: epoxy resin, ceramic, or metal casing; lead materials: copper alloy with tin/lead plating.
Technical Parameters
  • Gain 20 dB to 40 dB
  • Type BJT, FET, HBT
  • Noise Figure < 5 dB
  • Voltage Range 3V to 15V
  • Frequency Range 1 MHz to 10 GHz
  • Power Dissipation 100 mW to 1 W
Standards
ISO 9001, IEC 60747, JEDEC JESD22

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Active Device(s) (Transistor).

transistor VCO active device semiconductor oscillator frequency control electronic component BJT FET Active Device(s) (Transistor) Active Device(s) (Transistor) in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Voltage Controlled Oscillator

An electronic oscillator whose oscillation frequency is controlled by an input voltage.

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Engineering Analysis

Risks & Mitigation
  • Thermal runaway
  • Frequency drift due to temperature
  • Electrostatic discharge damage
  • Oscillation failure from component aging
FMEA Triads
Trigger: Overvoltage or overheating
Failure: Transistor burnout leading to VCO shutdown
Mitigation: Implement thermal management and voltage regulation circuits
Trigger: Material degradation
Failure: Increased noise or frequency instability
Mitigation: Use high-reliability semiconductors and regular testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for frequency stability, ±10% for gain parameters
Test Method
IEC 60747 for electrical characteristics, JEDEC standards for reliability testing

Buyer Feedback

★★★★☆ 4.5 / 5.0 (32 reviews)

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Active Device(s) (Transistor) arrived with full certification."

"Great transparency on the Active Device(s) (Transistor) components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

"The Active Device(s) (Transistor) we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."

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Frequently Asked Questions

What types of transistors are commonly used in VCOs?

Bipolar junction transistors (BJTs) and field-effect transistors (FETs), including MOSFETs and HEMTs, are common, with selection based on frequency, noise, and power requirements.

How does a transistor affect VCO performance?

It determines frequency stability, tuning range, phase noise, and output power; high-frequency transistors enable wider tuning and lower noise in RF applications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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