規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| TransistorType | NPN |
| Current-Collector(Ic)(Max) | 500 mA |
| Voltage-CollectorEmitterBreakdown(Max) | 45 V |
| VceSaturation(Max)@IbIc | 700mV @ 50mA, 500mA |
| Current-CollectorCutoff(Max) | 100nA (ICBO) |
| DCCurrentGain(hFE)(Min)@IcVce | 250 @ 100mA, 1V |
| Power-Max | 300 mW |
| Frequency-Transition | 100MHz |
| OperatingTemperature | -65°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-236-3, SC-59, SOT-23-3 |
概述
Description
The BC817-40LT1G is a general-purpose NPN bipolar junction transistor (BJT) in a small SOT-23 package. Key features:
- Current Rating: 500mA collector current (IC).
- Voltage Rating: 45V collector-emitter voltage (VCEO).
- Gain (hFE): High DC current gain (250–600 at 100mA).
- Package: Compact SOT-23 (3-pin), suitable for space-constrained designs.
- Applications: Switching, amplification, and driver circuits in consumer electronics, IoT, and low-power systems.
It is RoHS-compliant and ideal for automated PCB assembly. For detailed specs, refer to the datasheet.
- Current Rating: 500mA collector current (IC).
- Voltage Rating: 45V collector-emitter voltage (VCEO).
- Gain (hFE): High DC current gain (250–600 at 100mA).
- Package: Compact SOT-23 (3-pin), suitable for space-constrained designs.
- Applications: Switching, amplification, and driver circuits in consumer electronics, IoT, and low-power systems.
It is RoHS-compliant and ideal for automated PCB assembly. For detailed specs, refer to the datasheet.
Equivalent
Equivalent products to the BC817-40LT1G (NPN transistor, SOT-23, 45V, 500mA) include:
- MMBT4401LT1G (similar specs, higher gain)
- 2N3904 (TO-92, but functionally similar)
- BC807-40LT1G (PNP complement)
- KST44 (SOT-23 equivalent)
Check datasheets for exact parameter matches.
- MMBT4401LT1G (similar specs, higher gain)
- 2N3904 (TO-92, but functionally similar)
- BC807-40LT1G (PNP complement)
- KST44 (SOT-23 equivalent)
Check datasheets for exact parameter matches.
Features
The BC817-40LT1G is a general-purpose NPN transistor in a SOT-23 package. Key features:
- Current Rating: 500mA collector current (IC).
- Voltage Rating: 45V collector-emitter voltage (VCEO).
- Gain (hFE): High DC current gain (250–600 at IC = 2mA).
- Power Dissipation: 300mW (total).
- Package: SOT-23 (small surface-mount).
- Speed: Fast switching (transition frequency fT = 100MHz).
- Applications: Amplification, switching in low-power circuits, drivers, and signal processing.
Ideal for compact, low-voltage designs.
- Current Rating: 500mA collector current (IC).
- Voltage Rating: 45V collector-emitter voltage (VCEO).
- Gain (hFE): High DC current gain (250–600 at IC = 2mA).
- Power Dissipation: 300mW (total).
- Package: SOT-23 (small surface-mount).
- Speed: Fast switching (transition frequency fT = 100MHz).
- Applications: Amplification, switching in low-power circuits, drivers, and signal processing.
Ideal for compact, low-voltage designs.
Pinout
The BC817-40LT1G is a SOT-23 packaged NPN bipolar transistor with 3 pins:
1. Emitter (E) – Connected to ground or common reference.
2. Base (B) – Controls transistor switching/amplification.
3. Collector (C) – Output for amplified/switched current.
Key Features:
- VCEO: 45V
- IC: 500mA (max)
- hFE (gain): 250–600 (@ 2mA)
- Fast switching (for digital/logic applications).
Commonly used in switching circuits, amplifiers, and driver stages.
1. Emitter (E) – Connected to ground or common reference.
2. Base (B) – Controls transistor switching/amplification.
3. Collector (C) – Output for amplified/switched current.
Key Features:
- VCEO: 45V
- IC: 500mA (max)
- hFE (gain): 250–600 (@ 2mA)
- Fast switching (for digital/logic applications).
Commonly used in switching circuits, amplifiers, and driver stages.
Manufacturer
The BC817-40LT1G is manufactured by ON Semiconductor, now known as onsemi after rebranding in 2021.
onsemi is a global semiconductor company specializing in power management, analog, and sensor technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions.
The BC817-40LT1G is a general-purpose NPN transistor in a small SOT-23 package, commonly used for switching and amplification.
onsemi is a global semiconductor company specializing in power management, analog, and sensor technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions.
The BC817-40LT1G is a general-purpose NPN transistor in a small SOT-23 package, commonly used for switching and amplification.
Application
The BC817-40LT1G is a general-purpose NPN transistor commonly used in:
1. Switching Circuits – For low-power switching in digital logic and control systems.
2. Amplification – Small-signal amplification in audio and RF applications.
3. LED Drivers – Current regulation for LEDs in displays and indicators.
4. Consumer Electronics – Found in devices like TVs, smartphones, and IoT gadgets.
5. Automotive Electronics – Non-critical control functions in infotainment and lighting.
Its compact SOT-23 package and moderate current (500mA max) make it ideal for space-constrained, low-voltage designs.
1. Switching Circuits – For low-power switching in digital logic and control systems.
2. Amplification – Small-signal amplification in audio and RF applications.
3. LED Drivers – Current regulation for LEDs in displays and indicators.
4. Consumer Electronics – Found in devices like TVs, smartphones, and IoT gadgets.
5. Automotive Electronics – Non-critical control functions in infotainment and lighting.
Its compact SOT-23 package and moderate current (500mA max) make it ideal for space-constrained, low-voltage designs.
Package
The BC817-40LT1G is a NPN transistor packaged in SOT-23, a small surface-mount (SMD) package with 3 pins. It's compact, suitable for high-density PCB designs, and commonly used in switching and amplification applications. The "LT1G" suffix indicates its lead-free and RoHS-compliant status.
