MOSFET Transistor BS170 N-Channel, 500mA TO-92

MOSFET Transistor BS170 N-Channel, 500mA TO-92

Transistors

Reference: TRBS170

Part.No: BS170

€1.40

Out of Stock

The BS170 is a logic-level N-Channel Enhancement Mode MOSFET in a TO-92 package. Designed to switch on fully with 5V or 3.3V from microcontrollers, making it ideal for driving LEDs, relays, and other loads directly from Arduino, ESP32 and similar platforms without additional driver circuits.

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Description
Product Details

BS170 Logic-Level MOSFET – Direct Microcontroller Drive for Switching Applications

The BS170 is an N-Channel Enhancement Mode MOSFET that turns on fully with standard logic levels (5V or 3.3V), making it the go-to choice for Arduino and embedded projects. Unlike BJTs, it draws zero continuous gate current, freeing up your microcontroller pins and simplifying circuit design.

Functions & Applications

Logic-Level Gate: Fully saturates at 5V or 3.3V—direct from Arduino, ESP32, and Raspberry Pi outputs.
Zero Gate Current: Voltage-controlled switching with no continuous current draw from your microcontroller pin.
500 mA Drain Current: Capable of driving LEDs, small motors, buzzers, and relay coils up to its current limit.
Low On-Resistance (Rds): Minimal heat dissipation in switching applications, reducing the need for heatsinking.

Technical Specifications

Parameter	Value / Specification
Transistor Type	MOSFET (Metal–oxide–semiconductor FET)
Polarity / Channel	N-Channel
Package / Case	TO-92
Drain-Source Voltage (Vds)	200V
Max Drain Current (Id)	500mA
Gate Threshold Voltage (Vgs(th))	2.1V
Power Dissipation (Pd)	830mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: Can the BS170 be driven directly from a 3.3V microcontroller like ESP32?
A: Yes. The BS170's gate threshold is ~2.1V, so it will fully saturate at 3.3V. This makes it ideal for both 5V and 3.3V logic circuits without requiring a level-shifter.

Q: What is the main difference between BS170 and 2N7000?
A: Both are logic-level N-Channel MOSFETs in TO-92. The BS170 handles higher drain current (500mA vs ~200mA for 2N7000) and slightly higher power dissipation, making it better for driving heavier loads.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: MOSFET (Metal–oxide–semiconductor FET)
Transistor Polarity / Channel: N-Channel
Transistor Case Style: TO-92

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