Amplifying Transistor: Frequency Range DC-10GHz

Component Specifications

Definition

An amplifying transistor is a three-terminal semiconductor device (typically bipolar junction transistor or field-effect transistor) that controls current flow between two terminals using a small input signal at the third terminal, thereby providing voltage, current, or power gain in electronic amplification circuits. It serves as the core active element in voltage amplification stages where weak input signals are strengthened for further processing or output.

Working Principle

Operates on the principle of controlling a larger current flow between collector and emitter (in BJTs) or drain and source (in FETs) using a smaller input signal at the base or gate terminal. The transistor amplifies by modulating the conductivity of the semiconductor material through applied voltage or current, converting DC bias power into amplified AC signal power.

Materials

Semiconductor materials: Silicon (Si), Germanium (Ge), Gallium Arsenide (GaAs), Silicon Carbide (SiC). Package materials: Epoxy resin, ceramic, metal casing. Terminal materials: Copper alloy, gold plating.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Gain	20-1000 (hFE for BJTs)
Package Type	TO-92, TO-220, SOT-23, DIP, SOIC
Current Rating	10mA-100A
Voltage Rating	5-1000V
Frequency Range	DC-10GHz
Power Dissipation	100mW-500W

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, IEC 60747, JEDEC JESD77

Parent Products

This component is used in the following industrial products

Voltage Amplification Stage

The initial amplification stage in an audio amplifier that increases the input signal voltage to a level suitable for driving subsequent power amplification stages.

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Engineering Analysis

Risks & Mitigation

Thermal runaway
Electrostatic discharge damage
Overvoltage breakdown
Frequency oscillation
Saturation/cutoff distortion

FMEA Triads

Trigger: Excessive power dissipation
Failure: Thermal destruction of semiconductor junction
Mitigation: Implement proper heat sinking, derate power specifications, use thermal protection circuits

Trigger: Electrostatic discharge during handling
Failure: Gate oxide breakdown in FETs or junction damage in BJTs
Mitigation: Use ESD-safe handling procedures, implement protection diodes in circuit design

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±10% for gain parameters, ±5% for voltage ratings

Test Method

IEC 60747 semiconductor test standards, curve tracer analysis, gain-bandwidth product measurement

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Amplifying Transistor

Manufacturer profiles associated with Amplifying Transistor.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between BJT and FET amplifying transistors?

BJT (Bipolar Junction Transistor) amplifies using current control and has higher gain but lower input impedance. FET (Field-Effect Transistor) amplifies using voltage control and has higher input impedance but typically lower gain. BJTs are current-controlled devices while FETs are voltage-controlled devices.

How do I select the right amplifying transistor for my circuit?

Consider voltage and current requirements, gain specifications, frequency response, power dissipation needs, package type, and temperature range. Match the transistor's maximum ratings to your circuit's operating conditions with appropriate safety margins.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Amplifying Transistor