Overview
The BSS138K is an N-Channel Logic Level Enhancement Mode Field Effect Transistor (FET) produced by onsemi. This MOSFET is designed to offer low on-state resistance, low gate threshold voltage, and low input capacitance, making it suitable for a wide range of applications, particularly in high-efficiency power management.
The device is packaged in a small SOT-23 (SC-59, TO-236) surface mount package, which is lead-free and fully RoHS compliant. It is also ESD protected and features a green compound, making it environmentally friendly.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain-Source Voltage (VDSS) | 50 | V |
| Gate-Source Voltage (VGSS) | ±20 | V |
| Continuous Drain Current (ID) | 0.31 A (at VGS = 10V, TA = 25°C) | A |
| Pulsed Drain Current (IDM) | 0.8 A (10µs Pulse, Duty Cycle = 1%) | A |
| Drain-Source On Resistance (RDS(ON)) | 3.5 Ω (at VGS = 10V) | Ω |
| Gate Threshold Voltage (VGS(th)) | 1.1 V | V |
| Input Capacitance | 23.2 pF | pF |
| Turn-on Delay Time | 3.2 ns | ns |
| Turn-off Delay Time | 13.8 ns | ns |
| Rise Time | 2.5 ns | ns |
| Fall Time | 7.6 ns | ns |
| Operating Temperature Range | -55°C to +150°C | °C |
| Package Style | SOT-23 (SC-59, TO-236) | |
| Mounting Method | Surface Mount |
Key Features
- Low On-Resistance: The BSS138K features a low on-state resistance of 3.5 Ω at VGS = 10V, which minimizes power losses and enhances efficiency in power management applications.
- Low Gate Threshold Voltage: With a gate threshold voltage of 1.1 V, this MOSFET is suitable for logic level applications.
- Low Input Capacitance: The low input capacitance of 23.2 pF ensures fast switching speeds and reduced gate drive requirements.
- Fast Switching Speed: The device boasts fast switching times, including a turn-on delay time of 3.2 ns, turn-off delay time of 13.8 ns, rise time of 2.5 ns, and fall time of 7.6 ns.
- ESD Protected Gate: The MOSFET has an ESD protected gate with HBM = 2000 V and CDM = 2000 V, providing robust protection against electrostatic discharge.
- Lead-Free and RoHS Compliant: The BSS138K is totally lead-free and fully RoHS compliant, making it environmentally friendly.
- Halogen and Antimony Free: The device is also halogen and antimony free, further enhancing its environmental credentials.
Applications
The BSS138K is designed for various high-efficiency power management applications, including:
- Load Switches: Ideal for load switching in power management circuits due to its low on-resistance and fast switching speeds.
- Automotive Applications: Suitable for automotive applications requiring specific change control, such as those qualified to AEC-Q100/101/104/200 standards.
- General Purpose Switching: Can be used in general-purpose switching applications where low on-resistance and fast switching are critical.
Q & A
- What is the maximum drain-source voltage (VDSS) of the BSS138K?
The maximum drain-source voltage (VDSS) of the BSS138K is 50 V.
- What is the gate-source threshold voltage (VGS(th)) of the BSS138K?
The gate-source threshold voltage (VGS(th)) of the BSS138K is 1.1 V.
- What is the maximum continuous drain current (ID) of the BSS138K?
The maximum continuous drain current (ID) of the BSS138K is 0.31 A at VGS = 10V and TA = 25°C.
- What is the typical on-resistance (RDS(ON)) of the BSS138K?
The typical on-resistance (RDS(ON)) of the BSS138K is 3.5 Ω at VGS = 10V.
- Is the BSS138K ESD protected?
Yes, the BSS138K has an ESD protected gate with HBM = 2000 V and CDM = 2000 V.
- What is the operating temperature range of the BSS138K?
The operating temperature range of the BSS138K is -55°C to +150°C.
- What package style is the BSS138K available in?
The BSS138K is available in the SOT-23 (SC-59, TO-236) package style.
- Is the BSS138K RoHS compliant?
Yes, the BSS138K is totally lead-free and fully RoHS compliant.
- What are some typical applications of the BSS138K?
The BSS138K is typically used in load switches, automotive applications, and general-purpose switching where low on-resistance and fast switching are critical.
- Does the BSS138K meet automotive standards?
Yes, the BSS138K can meet automotive standards such as AEC-Q100/101/104/200 and is manufactured in IATF 16949 certified facilities.
