BSS138LT1G vs. 2N7002LT1G: The Ultimate N-Channel MOSFET Cross-Reference Guide
If you manage procurement for electronic contract manufacturing (CM) or OEM facilities, you already know the headache of sourcing reliable discrete components. When popular parts face extended lead times or sudden price hikes, finding a dependable BSS138LT1G equivalent becomes a critical task to keep production lines moving.
Today, we are putting two of the most widely used N-Channel MOSFETs head-to-head: the classic ON Semiconductor BSS138LT1G and the highly versatile 2N7002LT1G. Are they truly interchangeable? Let’s break down the data.
Core Parameter Comparison: Can They Swap?
At the engineering level, both of these components are designed for low-voltage, low-current switching applications. They are frequently utilized in logic level translation, power management, and load switching circuits.
Let's look at the critical specifications:
- Package Type: Both utilize the standard, space-saving SOT-23 surface-mount package.
- Drain-Source Voltage (Vdss): The BSS138LT1G is rated at 50V, whereas the 2N7002LT1G typically handles up to 60V, giving it a slight edge in voltage tolerance.
- Continuous Drain Current (Id): The BSS138LT1G maxes out around 200mA (220mA depending on exact testing conditions), while the 2N7002LT1G supports roughly 115mA to 300mA depending on the specific manufacturer's die.
- Gate Threshold Voltage (Vgs(th)): Both feature a low threshold voltage (typically around 1.3V - 2.0V), making them ideal for logic-level driving directly from microcontrollers.
The Verdict on Drop-in Replacement
In approximately 90% of standard commercial applications—such as simple LED drivers or logic level shifters—the 2N7002LT1G acts as a perfect drop-in replacement for the BSS138LT1G. Their identical footprint and highly similar electrical characteristics mean your engineers rarely need to redesign the PCB footprint or adjust the surrounding passive components.
Whenever you are building an N-Channel MOSFET cross reference list for your Bill of Materials (BOM), pairing these two models together is an industry-standard best practice to mitigate supply chain risks.
Secure Your Supply Chain with Aicchip
Whether your strict BOM requirements demand the exact ON Semiconductor original, or you are looking for cost-effective 2N7002LT1G bulk pricing to optimize your manufacturing costs, securing a stable supply is paramount.
At Aicchip, we bypass the traditional long factory lead times. We hold verified, factory-sealed BSS138LT1G in stock at our primary transit hub in Shenzhen, China, ready for immediate global dispatch. As a specialized distributor of a wholesale ON Semiconductor MOSFET inventory, we provide transparent Date Code (D/C) verification and customized DDP/DDU logistics.
Don't let a simple discrete component halt your multi-million dollar assembly line.
Need bulk pricing or immediate stock allocation? Click the WhatsApp button on the bottom right of your screen to connect directly with our sales engineering team for a real-time RFQ.
