The RB104-DC General Purpose Relay by Fuji Electric is a versatile electromechanical component widely utilized across various industries in the USA, India, Australia, Europe, and other regions. This relay is designed for printed circuit board (PCB) mounting and features a Single Pole Single Throw Normally Open (SPST NO) configuration with a 4.5V DC coil voltage. It is compatible with the TP04 relay socket, also manufactured by Fuji Electric.
Overview of RB104-DC General Purpose Relay
The RB104-DC relay is part of Fuji Electric's RB series, known for their compact design and high reliability. These relays are engineered to provide efficient switching solutions in various applications, including industrial automation, consumer electronics, and telecommunications.
Key Features:
Compact Design: The RB104-DC relay boasts a slim profile, making it suitable for densely populated PCBs where space is at a premium.
High Sensitivity: With a coil voltage of 4.5V DC, the relay operates efficiently with low power consumption, making it ideal for battery-powered devices and energy-conscious applications.
SPST NO Configuration: The Single Pole Single Throw Normally Open contact arrangement allows for straightforward integration into circuits requiring simple on/off control.
Compatibility with TP04 Socket: Designed to be used with the TP04 relay socket, the RB104-DC ensures secure mounting and easy replacement, enhancing maintenance efficiency.
Technical Specifications:
Contact Rating: The RB series relays, including the RB104-DC, are designed for a rated thermal current of 5 Amps.
Coil Voltage: 4.5V DC
Contact Configuration: SPST NO
Mounting Type: PCB Mount
Dimensions: The RB104-DC relay features a compact design with low height and narrow width, suitable for space-constrained applications.
Applications of RB104-DC Relays
The RB104-DC relay's versatility makes it suitable for a wide range of applications across various industries:
Industrial Automation: Used in control systems to manage machinery operations, providing reliable switching for actuators, motors, and other industrial equipment.
Consumer Electronics: Employed in devices such as home appliances for controlling power to different components, enhancing functionality and user control.
Telecommunications: Integrated into communication equipment to handle signal routing and switching tasks, ensuring efficient data transmission.
Automotive Systems: Utilized in automotive electronics for functions like lighting control, horn operation, and other auxiliary systems.
Circuit Diagram and Use Case Scenario
Circuit Description:
In a typical application, the RB104-DC relay can be used to control a load, such as a motor or lamp, using a low-power control signal.
Control Side (Coil): The relay coil is connected to a 4.5V DC power source through a control switch or a microcontroller output. When the control switch is closed or the microcontroller outputs a high signal, current flows through the coil, generating a magnetic field that actuates the relay.
Load Side (Contacts): The Normally Open (NO) contacts are connected in series with the load and the power supply. When the relay is actuated, the NO contacts close, completing the circuit and allowing current to flow to the load, thereby activating it.
Use Case Scenario:
Consider an industrial automation system where a microcontroller needs to control a high-power motor operating at 24V DC. The microcontroller operates at 3.3V logic levels and cannot directly drive the motor. The RB104-DC relay can be employed to interface between the microcontroller and the motor:
Interfacing with Microcontroller: The microcontroller outputs a control signal to a transistor circuit that drives the 4.5V DC required for the relay coil.
Relay Activation: When the microcontroller sends a high signal, the transistor allows current to flow through the relay coil, activating the relay.
Motor Control: Upon activation, the relay's NO contacts close, connecting the 24V power supply to the motor, thereby turning it on.
Isolation: The relay provides electrical isolation between the low-voltage microcontroller circuit and the high-power motor circuit, protecting sensitive components from potential damage.
Advantages of Using RB104-DC Relays
Electrical Isolation: Provides separation between control and load circuits, enhancing safety and protecting sensitive components.
High Reliability: Designed for consistent performance, ensuring dependable operation in critical applications.
Ease of Integration: The compact PCB mount design and compatibility with the TP04 socket facilitate easy incorporation into various electronic systems.
Energy Efficiency: Low coil power consumption makes it suitable for applications where energy efficiency is a priority.
Conclusion
The RB104-DC General Purpose Relay by Fuji Electric is a compact, reliable, and versatile component suitable for a wide range of applications across different industries and regions. Its SPST NO configuration, 4.5V DC coil voltage, and compatibility with the TP04 relay socket make it an excellent choice for designers and engineers seeking efficient switching solutions in their electronic systems.
For detailed technical specifications and additional information, please refer to the official datasheet provided by Fuji Electric.
Frequently Asked Questions (FAQs)
1. What is the RB104-DC relay, and what is its primary function?
The RB104-DC relay is an electromechanical general-purpose relay manufactured by Fuji Electric. Its primary function is to provide electrical switching for a variety of applications. It features a Single Pole Single Throw Normally Open (SPST NO) configuration and is PCB mountable.2. What is the coil voltage of the RB104-DC relay?
The RB104-DC relay operates with a coil voltage of 4.5V DC, which ensures efficient and low-power operation.3. What is the contact configuration of this relay?
The RB104-DC relay uses a Single Pole Single Throw Normally Open (SPST NO) configuration, allowing it to switch a single circuit on or off.4. Can the RB104-DC relay be used with a specific socket?
Yes, the RB104-DC relay is designed to be compatible with the TP04 relay socket, also manufactured by Fuji Electric.5. What are the typical applications of the RB104-DC relay?
This relay is used in various industries, including:- Industrial automation (control systems for machinery).
- Consumer electronics (home appliances).
- Telecommunications (signal routing).
- Automotive systems (lighting and auxiliary controls).
6. What is the maximum contact rating for the RB104-DC relay?
The RB104-DC relay has a rated thermal current of 5 Amps, suitable for medium-power applications.7. Is the RB104-DC relay suitable for PCB mounting?
Yes, the RB104-DC relay is specifically designed for PCB mounting, making it an excellent choice for compact and densely populated circuit boards.8. What are the dimensions of the RB104-DC relay?
The relay features a compact design with a low profile and narrow width, suitable for applications with limited space. Refer to the datasheet for exact dimensions.9. Can the RB104-DC relay be used in low-voltage circuits?
Yes, the relay’s coil voltage of 4.5V DC makes it ideal for low-voltage circuits, including battery-operated devices.10. What is the benefit of using the TP04 relay socket with this relay?
The TP04 relay socket ensures secure mounting, facilitates quick installation, and simplifies replacement or maintenance of the relay.11. Does the RB104-DC relay comply with industry standards?
Yes, Fuji Electric ensures that its relays, including the RB104-DC, meet industry standards for reliability and safety. Check the datasheet for specific certifications.12. Where can I purchase the RB104-DC relay?
You can purchase the RB104-DC relay from authorized Fuji Electric distributors or trusted retailers like Xon Electronics, which offers global delivery to countries like the USA, India, Australia, and Europe.13. What precautions should I take when using the RB104-DC relay?
- Ensure proper voltage and current ratings are adhered to.
- Use the recommended TP04 relay socket for safe and secure mounting.
- Follow the manufacturer’s guidelines provided in the datasheet for installation and usage.
14. How can I download the RB104-DC datasheet?
The datasheet for the RB104-DC relay can typically be downloaded from Fuji Electric's official website or from authorized distributor platforms like Xon Electronics.15. What should I do if my relay doesn’t function as expected?
If the relay fails to operate as intended, check for the following:- Ensure the coil is receiving the correct voltage (4.5V DC).
- Verify that the load connected is within the specified contact rating.
- Inspect connections to ensure there are no loose or faulty wiring issues.
If the issue persists, consult the datasheet or reach out to Fuji Electric's technical support.