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- July 18, 2023
- PCB knowledge
- (0)
- 07 mins
5 Pin vs 3 Pin Switch – Understanding the Differences and Making the Right Choice
Most of us use electrical switches, but few know the details that go into making them work. There are two main types of switch designs – 5 pin vs 3 pin switch – and while each one has its benefits, the question for anyone setting up a complex electrical system is which type should they choose. This blog post will help break down both design options so you can make an informed decision about what works best for your project.
We’ll cover how each switch works differently, discuss different applications for both designs, highlight some potential problems to consider in each case and share helpful tips on how to select the right type of switch for your needs. After reading this post, you’ll have all of the information required to confidently decide which model is best for you!
What is 5 pin switch?
A 5-pin switch is an electrical device with five terminals or pins, commonly used in electronic devices and electrical circuits. These pins enable the flow of electrical current to be connected or disconnected through the switch. Despite variations in design and purpose, this configuration remains constant.
Typically, a 5-pin switch consists of five terminals labeled as follows:
1. Common (COM): This pin finds a connection with one of the other pins based on the switch’s position & essentially serves as the common connection point for the switch.
2. Normally Open (NO): This pin remains unconnected to the common pin when the switch is in its default, or resting position. When the switch is activated or pressed, it makes contact with the common pin.
3. Normally Closed (NC): In its default resting position, this pin is connected to the common pin. However, when the switch is activated or pressed, the connection between the normally closed and common pins is broken.
4. Additional Terminal: The number of extra terminals in a switch design varies, depending on the specifics. These additional pins offer added functionality, such as multiple switch positions or specialized features.
5. Additional Terminal: Similar to the fourth terminal, the fifth terminal is an optional pin that may exist on certain switches. Its purpose depends on the switch’s design and intended use.
What is 3 pin switch?
A 3-pin switch is a fundamental electrical component with 3 terminals or pins. It primarily serves as an on/off control for circuits & devices. These switches play a vital role in connecting and disconnecting electrical currents.
The standard configuration of a 3-pin switch includes the following terminals:
1. Common (COM): This pin serves as the common connection point for the switch, allowing current to flow when it’s turned “on”. Simply put, it’s the switch’s main terminal.
2. Normally Open (NO): This pin remains unconnected to the common pin when the switch is in its default or resting position. When the switch is activated or turned on, it makes contact with the common pin, completing the circuit and allowing the current to flow.
3. Normally Closed (NC): This pin is connected to the common pin when the switch is in its default, or resting position. When the switch is activated or turned on, the connection between the normally closed and common pins is broken, interrupting the flow of current.
5-pin vs 3-pin switch, what is the difference?
The primary differences between a 5 pin vs 3 pin switch are as follows:
1. Number of Terminals: The most apparent difference is the number of terminals or pins on the switch. A 5-pin switch has five terminals, whereas a 3-pin switch has only three terminals. The additional pins in a 5-pin switch provide more flexibility and functionality compared to a 3-pin switch.
2. Additional Functionality: The extra pins in a 5-pin switch allow for additional functionality and control options compared to a 3-pin switch. With the extra terminals, a 5-pin switch can have features such as multiple switch positions, specialized modes, or the ability to control multiple circuits simultaneously. This makes 5-pin switches more versatile in certain applications where more complex operations are required.
3. Wiring Configuration: The wiring configuration for a 5-pin switch is typically more complex compared to a 3-pin switch. The additional pins on a 5-pin switch may require more connections and wiring considerations, whereas a 3-pin switch has a simpler wiring configuration due to its fewer terminals. This can affect the ease of installation and overall wiring complexity in a circuit or device.
Can you put 3-pin switches in a 5-pin PCB?
It’s possible to install 3-pin switches in a 5-pin printed circuit board (PCB). It’s noting, however, that the surplus pins on a 5-pin PCB won’t be utilized when incorporating a 3-pin switch. To prevent short circuits, the other pins on the PCB must be connected via jumper wires or left disconnected.
For those planning to use a 3-pin switch, selecting a PCB with only three pins is ideal. Doing so alleviates wiring complexity and eliminates any potential issues arising from extra pins on a 5-pin PCB.
How to choose a 5-pin vs 3-pin switch?
When deciding which type of switch to use in a circuit, the most important factor is the application. If you need more control options or are designing a complex system, then a 5-pin switch may be more suitable for your needs. On the other hand, if you just require basic on/off control with minimal wiring complexity, then a 3-pin switch may be a better option.
Before selecting a switch, it’s important to consider its type as well as specifications, including voltage rating, current capacity, contact type, and more. For optimal results, seek advice from an experienced electronics technician, or engineer who can help you choose the switch best suited for your application.
What are the best 3-pin switches?
The best 3-pin switches are as follows:
1. Toggle Switch: Toggle switches provide a simple on/off control through a lever that can be easily flipped up or down. These switches find wide application in lighting controls, appliances, electronic devices, and automotive systems.
2. Rocker Switch: Rocker switches are designed with a style that allows users to press one side to activate and the other side to deactivate. They are known for their user-friendly design, durability, and versatility across a wide range of applications.
3. Push Button Switch: Push button switches are engineered to establish a connection when pressed and held down, and to break the connection when released. They offer precise control and are commonly found in control panels, machinery, gaming devices, and electronic circuits.
What are the best 5-pin switches?
The best 5-pin switches are as follows:
1. Double-Pole/Double-Throw (DPDT) Switch: The DPDT switch features two shared pins that can link to distinct sets of normally open (NO) and normally closed (NC) pins. It’s commonly employed in situations that demand independent control of circuits or devices, such as motor controls, audio equipment, as well as power supply selection.
2. Selector Switch: A selector switch lets you choose different options or settings by rotating the switch to the desired position. They come in various configurations, such as single-pole/multiple-throw (SPMT) or multiple-pole/multiple-throw (MPMT), depending on the number of circuits as well as positions.
3. Keylock Switch: A keylock switch requires a key to turn & select different positions, ensuring that only authorized individuals can operate the switch. Keylock switches are commonly used in security systems, access control devices, and equipment that requires restricted or controlled access.
Conclusion
In conclusion, it is clear that 5 pin vs 3 pin switch have their advantages and disadvantages depending on what you need for your application. There are some key differences between them that should be taken into account when making the right choice. Additionally, both 5 pin vs 3 pin switch have available models with different actuation points that provide an even wider range of uses. Ultimately, it is important to weigh each option carefully and decide which one will work best for your project.
A 5-pin switch is an electrical device with five terminals or pins, commonly used in electronic devices and electrical circuits. These pins enable the flow of electrical current to be connected or disconnected through the switch. Despite variations in design and purpose, this configuration remains constant.
A 3-pin switch is a fundamental electrical component with 3 terminals or pins. It primarily serves as an on/off control for circuits & devices. These switches play a vital role in connecting and disconnecting electrical currents.
The primary differences between a 5 pin vs 3 pin switch are as follows:
1. Number of Terminals
2. Additional Functionality
3. Wiring Configuration
