規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| FETType | N-Channel |
| Technology | MOSFET (Metal Oxide) |
| DraintoSourceVoltage(Vdss) | 50 V |
| Current-ContinuousDrain(Id)@25°C | 340mA (Ta) |
| DriveVoltage(MaxRdsOnMinRdsOn) | 4.5V, 10V |
| RdsOn(Max)@IdVgs | 2.5Ohm @ 300mA, 10V |
| Vgs(th)(Max)@Id | 1.6V @ 250µA |
| GateCharge(Qg)(Max)@Vgs | 1.7 nC @ 10 V |
| Vgs(Max) | ±20V |
| InputCapacitance(Ciss)(Max)@Vds | 28.5 pF @ 25 V |
| PowerDissipation(Max) | 350mW (Ta) |
| OperatingTemperature | -55°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| SupplierDevicePackage | SOT-23 |
概述
Description
The BSS138 is a popular N-channel enhancement-mode MOSFET designed for low-voltage, low-power applications. Key features include:
- Low threshold voltage (VGS(th) ~ 0.8–1.5V), making it suitable for 3.3V/5V logic circuits.
- Low on-resistance (RDS(on) ~ 3.5Ω at VGS=4.5V), reducing power loss.
- Small SOT-23 package, ideal for space-constrained designs.
- Fast switching speeds, useful for signal switching and level shifting.
Common applications include load switching, level translation, and signal multiplexing in portable electronics, IoT devices, and embedded systems.
Limitations:
- Low current rating (200mA max), unsuitable for high-power tasks.
- Low VDS (50V max).
For cost-effective, low-power switching, the BSS138 is a reliable choice. Always check the datasheet for precise specs.
- Low threshold voltage (VGS(th) ~ 0.8–1.5V), making it suitable for 3.3V/5V logic circuits.
- Low on-resistance (RDS(on) ~ 3.5Ω at VGS=4.5V), reducing power loss.
- Small SOT-23 package, ideal for space-constrained designs.
- Fast switching speeds, useful for signal switching and level shifting.
Common applications include load switching, level translation, and signal multiplexing in portable electronics, IoT devices, and embedded systems.
Limitations:
- Low current rating (200mA max), unsuitable for high-power tasks.
- Low VDS (50V max).
For cost-effective, low-power switching, the BSS138 is a reliable choice. Always check the datasheet for precise specs.
Equivalent
Equivalent products to the BSS138 (N-channel MOSFET, 50V, 0.22A, SOT-23) include:
- DMN1019USN (Diodes Inc)
- 2N7002 (ON Semiconductor)
- NDS7002A (Fairchild/ON Semi)
- SI2302 (Vishay)
- FDN337N (ON Semi, higher current)
These offer similar specs (50V, ~0.2–0.3A) in SOT-23 packages. Verify pinouts and parameters for exact compatibility.
- DMN1019USN (Diodes Inc)
- 2N7002 (ON Semiconductor)
- NDS7002A (Fairchild/ON Semi)
- SI2302 (Vishay)
- FDN337N (ON Semi, higher current)
These offer similar specs (50V, ~0.2–0.3A) in SOT-23 packages. Verify pinouts and parameters for exact compatibility.
Features
The BSS138 is a popular N-channel enhancement-mode MOSFET with the following key features:
- Low Threshold Voltage (VGS(th)): Typically 1.3V, making it suitable for 3.3V/5V logic-level applications.
- Low On-Resistance (RDS(on)): 3.5Ω max at VGS = 4.5V, ensuring efficient switching.
- Low Gate Charge (Qg): 1.3nC (typ), enabling fast switching speeds.
- Low Power Dissipation: 0.35W (SOT-23 package).
- Voltage Ratings: 50V drain-source (VDSS), 20V gate-source (VGS).
- Small Package: SOT-23, ideal for space-constrained designs.
- Applications: Load switching, level shifting, and low-power digital circuits.
Its low threshold and compact size make it ideal for battery-powered and logic interface applications.
- Low Threshold Voltage (VGS(th)): Typically 1.3V, making it suitable for 3.3V/5V logic-level applications.
- Low On-Resistance (RDS(on)): 3.5Ω max at VGS = 4.5V, ensuring efficient switching.
- Low Gate Charge (Qg): 1.3nC (typ), enabling fast switching speeds.
- Low Power Dissipation: 0.35W (SOT-23 package).
- Voltage Ratings: 50V drain-source (VDSS), 20V gate-source (VGS).
- Small Package: SOT-23, ideal for space-constrained designs.
- Applications: Load switching, level shifting, and low-power digital circuits.
Its low threshold and compact size make it ideal for battery-powered and logic interface applications.
Pinout
The BSS138 is a N-channel MOSFET with 3 pins (SOT-23 package):
1. Gate (G) – Controls the switching (voltage applied here turns the MOSFET on/off).
2. Drain (D) – Connects to the load (current flows in when MOSFET is on).
3. Source (S) – Ground reference (current flows out).
Key Features:
- Low threshold voltage (~1.5V max).
- 60V drain-source voltage (VDS).
- 200mA continuous drain current (ID).
- Used for low-power switching, level shifting, and signal amplification.
Concise and functional for most applications.
1. Gate (G) – Controls the switching (voltage applied here turns the MOSFET on/off).
2. Drain (D) – Connects to the load (current flows in when MOSFET is on).
3. Source (S) – Ground reference (current flows out).
Key Features:
- Low threshold voltage (~1.5V max).
- 60V drain-source voltage (VDS).
- 200mA continuous drain current (ID).
- Used for low-power switching, level shifting, and signal amplification.
Concise and functional for most applications.
Manufacturer
The BSS138 is a popular N-channel MOSFET manufactured by Nexperia, a former division of NXP Semiconductors (spun off in 2017).
Nexperia is a Dutch-headquartered semiconductor company specializing in high-volume production of discrete, logic, and MOSFET devices. Known for reliability and efficiency, it serves industries like automotive, industrial, and consumer electronics.
The BSS138 is widely used in low-power switching applications due to its small size and performance.
Nexperia is a Dutch-headquartered semiconductor company specializing in high-volume production of discrete, logic, and MOSFET devices. Known for reliability and efficiency, it serves industries like automotive, industrial, and consumer electronics.
The BSS138 is widely used in low-power switching applications due to its small size and performance.
Application
The BSS138 is a popular N-channel MOSFET used in various low-power applications. Key areas include:
1. Signal Switching – Used in logic-level switching for microcontrollers and digital circuits.
2. Load Switching – Controls small DC loads in portable devices.
3. Level Shifting – Converts signals between different voltage levels (e.g., 3.3V to 5V).
4. Battery Management – Protects circuits in low-voltage power systems.
5. Consumer Electronics – Found in smartphones, tablets, and IoT devices for power management.
Its low threshold voltage, small package, and efficiency make it ideal for compact, energy-efficient designs.
1. Signal Switching – Used in logic-level switching for microcontrollers and digital circuits.
2. Load Switching – Controls small DC loads in portable devices.
3. Level Shifting – Converts signals between different voltage levels (e.g., 3.3V to 5V).
4. Battery Management – Protects circuits in low-voltage power systems.
5. Consumer Electronics – Found in smartphones, tablets, and IoT devices for power management.
Its low threshold voltage, small package, and efficiency make it ideal for compact, energy-efficient designs.
Package
The BSS138 is commonly available in surface-mount packages, such as SOT-23 (3-pin) and SOT-323 (smaller variant). These packages are compact, suitable for high-density PCB designs, and widely used in low-power applications. The SOT-23 is the most prevalent. For through-hole options, TO-92 may be available but is less common.
