Specifications
| Attribute | Value |
| Supplier | Rohm Semiconductor |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Transistor Type | NPN |
| Current - Collector(Ic)(Max) | 500 mA |
| Voltage - Collector Emitter Breakdown(Max) | 20 V |
| Vce Saturation(Max) @ Ib Ic | 400mV @ 20mA, 500mA |
| Current - Collector Cutoff(Max) | 500nA (ICBO) |
| DC Current Gain(h FE)(Min) @ Ic Vce | 1200 @ 10mA, 3V |
| Power - Max | 200 mW |
| Frequency - Transition | 350MHz |
| Operating Temperature | 150°C (TJ) |
| Mounting Type | Surface Mount |
Overview
Description
2SD2114KT146W is a transistor from the Japanese 2SD NPN family. It’s a discrete silicon transistor used for amplification or switching in RF/analog circuits and general purpose “small-signal” roles.
What the suffix means:
- KT146W: a package/lot/version code; not a feature spec. The exact electrical data (Vce, Ic, ft, hFE, Pd) depends on the specific device revision and lot.
Key points:
- Type: NPN silicon transistor.
- Typical uses: RF/audio/driver stages, switching in discrete circuits.
- Packaging and pinout: varies by vendor; consult the exact datasheet for your part.
- Essential data: check Vce, Ic, power dissipation, frequency response (ft), gain, and thermal requirements in the datasheet.
If you’re sourcing or replacing it, obtain the official datasheet for the exact lot and verify pinout and ratings. I can help look up the datasheet and summarize the precise numbers if you want.
What the suffix means:
- KT146W: a package/lot/version code; not a feature spec. The exact electrical data (Vce, Ic, ft, hFE, Pd) depends on the specific device revision and lot.
Key points:
- Type: NPN silicon transistor.
- Typical uses: RF/audio/driver stages, switching in discrete circuits.
- Packaging and pinout: varies by vendor; consult the exact datasheet for your part.
- Essential data: check Vce, Ic, power dissipation, frequency response (ft), gain, and thermal requirements in the datasheet.
If you’re sourcing or replacing it, obtain the official datasheet for the exact lot and verify pinout and ratings. I can help look up the datasheet and summarize the precise numbers if you want.
Pinout
Pin count: 3.
Function: It is an NPN bipolar transistor (three-terminal device: Base, Collector, Emitter) used for switching and general-purpose amplification. Exact pin numbering (which lead is B/C/E) depends on the package variant—refer to the component's datasheet for the package-specific pin map.
Function: It is an NPN bipolar transistor (three-terminal device: Base, Collector, Emitter) used for switching and general-purpose amplification. Exact pin numbering (which lead is B/C/E) depends on the package variant—refer to the component's datasheet for the package-specific pin map.
Application
2SD2114KT146W is a high‑voltage NPN power transistor. Common application areas include:
- Switching power supplies and DC‑DC converters
- Motor-drive circuits (DC motors, stepper motors)
- Linear regulators and pass elements in power supplies
- Inverters, uninterruptible power supplies, and renewable‑energy interfaces
- Medium‑power audio output stages
- Industrial/telecom equipment requiring rugged, high‑voltage switching
Note: check the datasheet for exact ratings (Vce, Ic, gain, switching speed) and heat-sinking requirements, and respect the safe operating area.
- Switching power supplies and DC‑DC converters
- Motor-drive circuits (DC motors, stepper motors)
- Linear regulators and pass elements in power supplies
- Inverters, uninterruptible power supplies, and renewable‑energy interfaces
- Medium‑power audio output stages
- Industrial/telecom equipment requiring rugged, high‑voltage switching
Note: check the datasheet for exact ratings (Vce, Ic, gain, switching speed) and heat-sinking requirements, and respect the safe operating area.
Package
TO-220 plastic package (through-hole power transistor).
