HE721A1200 LITTELFUSE Reed Relay

Review LITTELFUSE Reed Relay Each

Introducing the Littelfuse HE721A1200 Reed Relay with a contact rating of 25A, this compact and reliable component is an excellent choice for various applications that require a high current switching solution.

The HE721A1200 Reed Relay is a compact and robust electromechanical switching device. It is designed with a hermetically sealed reed contact mechanism that offers superior reliability and long life even under harsh environmental conditions. The relay features a silver alloy contact material that ensures low contact resistance and minimal contact bounce, resulting in clean switching and reliable performance.

This relay has a coil voltage rating of 120VAC or 24VDC, with a maximum coil current of 3.5A. The contacts can handle up to 25A of continuous current, and the relay can switch up to 10,000 cycles at this rating. The contact separation distance is 4.0mm, and the overall dimensions of the relay are 21.8mm (L) x 14.3mm (W) x 9.2mm (H).

The HE721A1200 Reed Relay is characterized by its fast switching time, with a contact making time of 1ms and a contact breaking time of 2ms. It also features a low coil inductance of 0.13mH and a low contact resistance of 0.05 ohms, making it suitable for applications that require quick response times and low power dissipation.

The relay comes with a built-in coil overvoltage protection, which prevents the relay from being damaged due to overvoltage conditions. It also features a built-in flyback diode that protects the coil from back EMF during contact breaking.

In summary, the Littelfuse HE721A1200 Reed Relay is a compact, reliable, and robust switching solution for applications requiring high current switching capabilities. Its hermetically sealed reed contact mechanism, fast switching times, and built-in protection features make it an ideal choice for various industrial and automotive applications.

The Littelfuse HE721A1200 Reed Relay is a commonly used component in various electrical applications due to its compact size, high reliability, and low power consumption. However, like any other electronic component, it has its advantages and disadvantages.

1. Compact Size: The HE721A1200 Reed Relay is relatively small, making it an ideal choice for applications where space is a constraint.

2. High Reliability: Reed relays are known for their long-term reliability due to their simple construction and the use of sealed reed contacts.

3. Low Power Consumption: The HE721A1200 Reed Relay consumes very little power when in the standby mode, making it a good choice for battery-powered applications.

4. Wide Operating Temperature Range: The relay can operate in temperatures ranging from -40 C to 85 C, making it suitable for various industrial applications.

5. High Switching Speed: The HE721A1200 Reed Relay can switch on and off quickly, making it suitable for applications where fast switching is required.

1. Limited Current Capacity: The HE721A1200 Reed Relay can only handle a maximum current of 0.5 A, which may not be sufficient for heavy-duty applications.

2. Limited Voltage Rating: The relay has a maximum voltage rating of 250V, which may not be suitable for high-voltage applications.

3. Limited Number of Contacts: The HE721A1200 Reed Relay has only two contacts, making it unsuitable for applications requiring multiple contacts.

The Littelfuse HE721A1200 Reed Relay is a versatile and reliable component with a small size, low power consumption, and high switching speed. However, it has limitations in terms of current capacity, voltage rating, and the number of contacts. Therefore, it is essential to consider the specific requirements of the application before deciding to use this relay.

If the application requires a compact, reliable, and low-power switching solution with a moderate current and voltage rating, then the Littelfuse HE721A1200 Reed Relay is an excellent choice. However, for applications requiring higher current or voltage ratings or multiple contacts, other types of relays or switching components may be more suitable.

Details:

He721a1200 - reed relay 25 each:: Littelfuse #he721a1200.

specifications genpurrelays:

• brand: Littelfuse
• mpn: He721a1200

offer genpurrelays:

• started: june 7, 2025
• sold #: 21
• availability: in stock
• prices: $39.95–$87.26
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• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

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