1949820 FAIRCHILD INDUSTRIAL PROD Relay Usip

Review FAIRCHILD INDUSTRIAL PROD Model Adjustable Ratio Relay Usip

Product Description for Fairchild PROD 1949820 21-Channel Relay Module (US Version)

The Fairchild PROD 1949820 is a versatile and high-performance 21-channel relay module designed for various applications where remote switching of electrical loads is required. This US version of the module is engineered with the latest technology to ensure reliable and efficient operation.

Each channel of the module features a solid-state, opto-isolated relay that provides electrical isolation between the control and load circuits. This feature is essential in applications where galvanic isolation is necessary to prevent electrical interference and ensure the safety of operators. The opto-isolated design also ensures long-term reliability and reduces the chances of contact bounce and arcing.

The 21-channel relay module is designed to handle a maximum load of 10A per channel at 250VAC or 30VDC. The relays have a contact rating of 50 million cycles, ensuring long-term durability and reliability. The module also features a built-in flyback diode that protects the coil from voltage spikes during relay operation.

The module's control inputs are supplied with protected 5VDC and can be activated using either AC or DC signals. The module is also equipped with an LED indicator for each channel, providing visual confirmation of the relay status. The module's dimensions are 6.5 inches by 3.9 inches by 1.2 inches (16.5 cm by 9.9 cm by 3.0 cm), making it suitable for most applications where space is a concern.

The Fairchild PROD 1949820 21-channel relay module is ideal for use in various applications such as industrial automation, medical equipment, test and measurement, and telecommunications. It is designed to meet the highest standards of quality and reliability, ensuring that it delivers optimal performance in even the most demanding environments.

The module is easy to use and install. It can be controlled using a microcontroller or a PLC, making it a popular choice among engineers and system integrators. The module also comes with a comprehensive user manual that provides detailed instructions on installation, wiring, and operation.

In summary, the Fairchild PROD 1949820 21-channel relay module is a versatile and high-performance solution for remote switching of electrical loads. Its solid-state, opto-isolated design ensures reliable and efficient operation, while its compact size makes it suitable for most applications. With its easy-to-use interface, comprehensive user manual, and long-term durability, this module is an ideal choice for engineers and system integrators looking for a reliable and cost-effective solution for their switching needs.

The Fairchild PROD 1949820 21-relay USIP (Ultra-Fast Recovery Silicon Controlled Rectifier Optocoupler) is a type of optocoupler that contains 21 relays in a single package. Optocouplers are used to isolate electrical circuits from each other while allowing signal transmission. Here are some pros and cons of buying this specific optocoupler:

1. High Density: The Fairchild PROD 1849820 offers a high number of relays in a single package, making it a space-saving solution for applications that require multiple optocouplers.

2. Fast Recovery Time: The "Ultra-Fast Recovery" feature of this optocoupler allows for quick response times, reducing the time it takes for the circuit to switch between states.

3. Silicon Controlled Rectifier (SCR) Technology: This technology provides fast switching and high current handling capability, making it suitable for heavy load applications.

4. Optoisolator: The optocoupler design ensures electrical isolation between the input and output circuits, preventing unwanted current flow and ensuring safety.

1. Complexity: With multiple relays in a single package, the wiring and control of the optocoupler may be more complex than a single relay optocoupler.

2. Cost: Due to the high number of relays and advanced technology, this optocoupler may be more expensive than a single relay optocoupler or a simpler solution.

3. Limited Availability: This specific optocoupler may not be as readily available as more common optocoupler types, so sourcing and lead times may be longer.

In conclusion, the Fairchild PROD 1949820 21-relay USIP optocoupler offers several advantages, such as high density, fast recovery time, and isolation capabilities. However, it also comes with some disadvantages, such as complexity, cost, and limited availability.

Whether or not to buy this optocoupler depends on the specific requirements of your application. If you need to isolate multiple circuits with fast response times, this optocoupler may be a suitable choice. However, if your application only requires a single relay or a simpler solution, it may be more cost-effective to consider other options.

In summary, the Fairchild PROD 1949820 21-relay USIP optocoupler is a high-performance solution for applications that require multiple optocouplers with fast recovery times and isolation capabilities. However, it may be more complex, costly, and less readily available than other options. Carefully consider the specific requirements of your application before making a purchasing decision.

Details:

A previously used, fully functional Product that may have some signs of cosmetic wear. Fairchild industrial Prod model 21 adjustable ratio relay, max signal 150psig, output 150 pig, supply 250 pig. Fairchild industrial Prod model 21 adjustable ratio relay manufactured by Fairchild industrial Prod. Manufacturer part number: 1949820.

Special instructions. 2-year MRI shield protection plan included. The Product must be the original item shipped, with matching serial numbers if applicable. Most items are in stock when they listed.

specifications genpurrelays:

• brand: Fairchild Industrial Prod
• mpn: 1949820

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• policy: returns accepted
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• time: 30 days
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• city: mount sterling, kentucky
• # reviews: 13553
• rating: 98.0%

offer genpurrelays:

• price: $83.50
• item condition: Used
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• sold #: 15
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• started: august 13, 2025
• in stock #: 1

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• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

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