) : This tells you the maximum frequency at which the transistor can still provide gain. If you're designing for RF or fast digital signals, this is your primary constraint.
Transition Frequency (fT): The frequency at which the current gain drops to unity.
| Rating | Symbol | Meaning | | :--- | :--- | :--- | | | ( V_CEO ) | Max voltage across the transistor when it is off . | | Collector Current | ( I_C ) | Max continuous current through the collector lead. | | Power Dissipation | ( P_tot ) | Max power the chip can burn before melting. Usually given at 25°C case temperature. | | Junction Temperature | ( T_J ) | The temperature of the silicon die itself (typically 150°C or 175°C). | data sheet of transistor
A transistor is a heater. This section tells you how hot it will get for every watt you burn.
Before you solder, ask three questions answered only by the data sheet: ) : This tells you the maximum frequency
By carefully reviewing each section of a transistor data sheet, you can ensure that your component selection is robust, efficient, and capable of handling the demands of your specific circuit.
40 V, 600 mA NPN/PNP general-purpose transistors. Page 1. NMB2227A. 40 V, 600 mA NPN/PNP general-purpose transistors. 12 November ... Nexperia How to read the datasheet (electrical characteristics) of a bias ... How to read the datasheet (electrical characteristics) of a bias resistor built-in transistor (BRT) * Figure 1 Equivalent circuit ... Toshiba Electronic Devices & Storage Corporation NPN power transistors - STMicroelectronics Collector-emitter. sustaining voltage. (IB = 0) IC =30mA. for BD241A. for BD241C. 60. 100. V. V. VCE(sat) (1) Collector-emitter. s... STMicroelectronics Transistor Fundamentals: Structure, Types, and Operating Principles Feb 6, 2026 — | Rating | Symbol | Meaning | |
A transistor’s data sheet is not just a list of numbers; it is a technical specification, a legal contract, and an application guide. Learning to decode it is an essential skill for any circuit designer.