2SD2142K is a high-gain amplifier transistor with Darlington connection and high input impedance. Its features include high DC current gain (minimum 5000), operating voltage of 30V, and maximum current of 0.3A.
The 2SD2142K is a high‑gain Darlington amplifier transistor rated for 30 V collector‑base and collector‑emitter voltages, with a minimum DC current gain of 5000 at VCE=3 V, IC=10 mA. It is designed for applications requiring high input impedance and can operate within a storage temperature range of –55 °C to +150 °C.
The document lists absolute maximum ratings, detailed electrical characteristics such as transition frequency (200 MHz) and output capacitance (54 pF), and provides typical characteristic curves. Packaging information shows the device is supplied in an SMT3 package (code T146) with a basic ordering unit of 3000 pieces. Usage notes and legal notices are included in the appendix.
| Collector‑base voltage (Vcbo) | 30 V |
|---|---|
| Collector‑emitter voltage (Vceo) | 30 V |
| Emitter‑base voltage (Vebo) | 10 V |
| Collector current (Ic) | 0.3 A |
| Collector power dissipation (P0) | 0.2 W |
| Junction temperature (Tj) | 150 °C |
| Storage temperature (Tstg) | –55 to +150 °C |
| DC current gain (hFE) minimum | 5000 |
| Transition frequency (fT) | 200 MHz |
| Output capacitance (Cob) | 54 pF |
| Package type | SMT3 |
| Package code | T146 |
| Basic ordering unit | 3000 pieces |
The maximum collector‑emitter voltage is 30 V.
The transistor has a minimum DC current gain of 5000 at VCE = 3 V and IC = 10 mA.
It is supplied in an SMT3 surface‑mount package.
The device can be stored from –55 °C to +150 °C.