Introduction to BS170 N-Channel Mosfet:
The BS170 is a small yet powerful N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) that has found its place in various electronic circuits. Its compact size and impressive performance make it a favorite among electronics enthusiasts and professionals alike. In this article, we will delve deeper into what the BS170 is, its breakdown, features, specifications, pinout, applications, and equivalent alternatives.
![](https://www.circuitdatasheet.com/wp-content/uploads/2023/10/IMG-20231027-WA0011.jpg)
What is BS170?
The BS170 is a low-power N-channel MOSFET designed for switching applications. MOSFETs are essential components in electronics, used for various purposes, including amplification, signal processing, and switching. The “N-channel” designation means that it conducts when a positive voltage is applied to its gate relative to its source.
Breakdown of BS170:
The BS170 is a tiny semiconductor device with three main terminals: Gate (G), Drain (D), and Source (S). It operates based on the principle of controlling the flow of current between the Drain and Source terminals by applying a voltage to the Gate terminal. It can handle low to moderate power levels and is primarily better for low-voltage, low-current switching applications.
Features of BS170:
Feature | Value |
Type | N-channel MOSFET |
Threshold Voltage (Vgs) | Low (typically around 2.0V) |
Switching Speed | Fast |
Form Factor | Small (TO-92, SOT-23, D2PAK options) |
On-Resistance (Rds(on)) | Low (typically around 5 Ohms) |
Current Rating (Id) | 500mA |
Temperature Stability | Excellent |
ESD Protection | Yes |
RoHS Compliance | Yes |
Voltage Range (Vds) | Up to 60V |
Availability | Readily available |
Specifications of BS170 (Table):
Model | Description |
BS170 | N-channel MOSFET |
Vds | Drain-Source Voltage (Maximum): 60V |
Vgs | Gate-Source Voltage (Maximum): ±20V |
Id | Continuous Drain Current: 500mA |
Rds(on) | On-Resistance (Maximum): 5 Ohms |
Package | TO-92, SOT-23, and D2PAK (varies by manufacturer) |
Pinout of BS170 MOSFET
![](https://www.circuitdatasheet.com/wp-content/uploads/2023/10/IMG-20231027-WA0012.jpg)
Pin Configuration of BS170 MOSFET
Pin Name | Pin Description |
Gate (G) | Controls the MOSFET |
Drain (D) | Current flows out of here |
Source (S) | Current flows in here |
Applications of BS170:
- Switching low-power loads in electronic devices.
- Signal amplification in audio circuits.
- LED dimming and control.
- Voltage level shifting.
- Motor control in robotics.
- Battery management systems.
- Solar power converters.
- Overcurrent protection.
- Audio signal switching.
- Pulse-width modulation (PWM) control.
Equivalent Alternatives:
- 2N7000
- IRFZ44N
- FQP30N06L
- NDP6020P
- BSS138
In conclusion, the BS170 is a versatile N-channel MOSFET with a wide range of applications in the world of electronics. Its compact size, low on-resistance, and affordability make it a popular choice among designers and hobbyists. Whether you’re working on a small-scale project or a more significant electronic endeavor, the BS170 is worth considering for your switching needs.
FAQS
1. What is the BS170 MOSFET used for?
- The BS170 MOSFET is primarily used for switching applications in electronic circuits.
2. What does “N-channel” mean in the context of the BS170?
- “N-channel” indicates that the BS170 conducts when a positive voltage is applied to its gate terminal relative to its source.
3. What is the typical threshold voltage for the BS170?
- The typical threshold voltage (Vgs) for the BS170 is around 2.0 volts.
4. What is the maximum Drain-Source Voltage (Vds) it can handle?
- The BS170 can handle a maximum Drain-Source Voltage (Vds) of 60 volts.
5. What is the maximum continuous Drain current (Id) rating for the BS170?
- The maximum continuous Drain current (Id) rating for the BS170 is 500mA.
6. Can I use the BS170 for high-power applications?
- No, the BS170 is better for low to moderate-power applications due to its limited current-handling capacity.
7. What packages are available for the BS170?
- The BS170 is available in various packages, including TO-92, SOT-23, and D2PAK, depending on the manufacturer.
8. Is the BS170 environmentally friendly?
- Yes, the BS170 is RoHS compliant, which means it adheres to environmental regulations.
9. What are some common alternatives to the BS170?
- Common alternatives to the BS170 include 2N7000, IRFZ44N, FQP30N06L, NDP6020P, and BSS138.
10. What are some typical applications for the BS170? – The BS170 is used in a variety of applications, including LED dimming, motor control, audio signal switching, battery management systems, and voltage level shifting, among others.