HE721A0500 Allicdata Electronics
Allicdata Part #:

HE100-ND

Manufacturer Part#:

HE721A0500

Price: $ 0.89
Product Category:

Relays

Manufacturer: Littelfuse Inc.
Short Description: RELAY REED SPST 500MA 5V
More Detail: N/A
DataSheet: HE721A0500 datasheetHE721A0500 Datasheet/PDF
Quantity: 15427
1 +: $ 0.80640
10 +: $ 0.75474
25 +: $ 0.67082
50 +: $ 0.63731
100 +: $ 0.60373
250 +: $ 0.53666
500 +: $ 0.50312
1000 +: $ 0.46958
5000 +: $ 0.45281
Stock 15427Can Ship Immediately
$ 0.89
Specifications
Series: HE700
Packaging: Tube 
Part Status: Active
Coil Type: Non Latching
Coil Current: 10.0mA
Coil Voltage: 5VDC
Contact Form: SPST-NO (1 Form A)
Contact Rating (Current): 500mA
Switching Voltage: 200VDC - Max
Turn On Voltage (Max): 3.75 VDC
Turn Off Voltage (Min): 0.5 VDC
Operate Time: 1ms
Release Time: 1ms
Features: --
Mounting Type: Through Hole
Termination Style: PC Pin
Operating Temperature: -40°C ~ 85°C
Contact Material: --
Coil Power: --
Coil Resistance: 500 Ohms
Description

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Reed relays are one of the most versatile and reliable ways to switch electric circuits. The HE721A0500, manufactured by Honeywell, is a high-performance single-pole, single-throw, reed relay and operates in robust and demanding applications. This relay has outstanding performance, ensuring it can be used in very reliable, accurate applications requiring low power consumption. This article will discuss the application field and working principle of the HE721A0500.

Application Field

The HE721A0500 is commonly used in telecommunications, data acquisition, test and measurement, security and access control systems, and many other control systems. It is particularly useful when used in system-level switching applications where the power and/or current requirement is very low. Its versatile and reliable operation makes it ideal for applications requiring independent and simultaneous on/off switching of two circuits, such as in switch-mode power supplies. This reed relay is also used in medical instrumentation, fire alarm systems, and in control systems that involve AC/DC switching.

The HE721A0500 is also used in industrial motor control applications and in industrial process control. Its hermetically sealed enclosure allows it to operate in even the harshest environments without sacrificing performance. This reed relay is especially suitable for use as a low-voltage AC load switching device, making it ideal for control systems that use AC/DC switching.

Working Principle

The working principle of the HE721A0500 is based on the principle of magnetism. This relay is made up of two ferromagnetic parts: the core and the coil. When a current is applied to the coil, a magnetic field is generated which attracts the core. When the core is attracted, it causes the contacts of the relay to close or open, thus completing or breaking the circuit. The contacts remain closed until the current is removed and the core is no longer attracted. This principle of operation makes the HE721A0500 a very reliable and accurate switching device.

The HE721A0500 is designed to be used in low voltage applications that require power consumption of no more than 5V DC. Its design allows it to switch loads up to 1A, making it an ideal choice for low power applications. It can switch both AC and DC loads, making it highly versatile. Additionally, its small size makes it an ideal choice for applications requiring space-saving solutions.

In addition to its reliable and versatile operation, the HE721A0500 also has several safety features. It contains an internal resistor which prevents it from being used as a short-circuit device. It also includes a reverse current protection feature which prevents excessive current from flowing through the contacts, protecting integrated circuits from damage. Finally, it has a diode which prevents electrical shock to the user when the relay is energized.

The HE721A0500 reed relay is a highly versatile and reliable switching device. Its robust design and low power requirement make it ideal for use in a wide range of applications. Its small size and reliable operation make it well-suited for space-saving solutions. It is a great choice for applications that require simultaneous on/off switching of two circuits, such as switch-mode power supplies. Additionally, its safety features ensure that it is safe for use even in the most demanding and extreme environments.

The specific data is subject to PDF, and the above content is for reference

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HE721A1200 Littelfuse I... 0.78 $ 5183 RELAY REED SPST 500MA 12V
HE721A0500 Littelfuse I... 0.89 $ 15427 RELAY REED SPST 500MA 5V
HE721A0510 Littelfuse I... -- 22599 RELAY REED SPST 500MA 5V
HE721A1210 Littelfuse I... 1.23 $ 6633 RELAY REED SPST 500MA 12V
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HE722A2410 Littelfuse I... 1.99 $ 2356 RELAY REED DPST 500MA 24V
HE721C0510 Littelfuse I... -- 7142 RELAY REED SPDT 250MA 5V
HE721C1200 Littelfuse I... 2.11 $ 1354 RELAY REED SPDT 250MA 12V
HE722A1210 Littelfuse I... -- 5380 RELAY REED DPST 500MA 12V
HE722A0500 Littelfuse I... 2.44 $ 7317 RELAY REED DPST 500MA 5V
HE721C2400 Littelfuse I... 2.46 $ 1980 RELAY REED SPDT 250MA 24V
HE721A2400 Littelfuse I... 0.88 $ 1564 RELAY REED SPST 500MA 24V
HE722A2400 Littelfuse I... -- 1970 RELAY REED DPST 500MA 24V
HE721C1210 Littelfuse I... 1.98 $ 1436 RELAY REED SPDT 250MA 12V
HE721C2410 Littelfuse I... 2.53 $ 2395 RELAY REED SPDT 250MA 24V
HE721E0510 Littelfuse I... 3.09 $ 121 RELAY REED SPDT 250MA 5V
HE721C2430 Littelfuse I... 4.29 $ 1984 RELAY REED SPDT 250MA 24V
HE721E2400 Littelfuse I... 5.31 $ 562 RELAY REED SPDT 250MA 24V
HE721A0515 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 5V
HE721A1215 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 12V
HE721A2415 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 24V
HE722A0520 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 5V
HE722A0540 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 5V
HE722A0550 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 5V
HE722A1220 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 12V
HE722A1230 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 12V
HE722A1240 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 12V
HE722A2420 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 24V
HE722A2430 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 24V
HE722A2440 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 24V
HE722A2450 Littelfuse I... 0.0 $ 1000 RELAY REED DPST 500MA 24V
HE721A0550 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 5V
HE721A1250 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 12V
HE721A2420 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 24V
HE721A2440 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 24V
HE721A2450 Littelfuse I... 0.0 $ 1000 RELAY REED SPST 500MA 24V
HE721C0550 Littelfuse I... 0.0 $ 1000 RELAY REED SPDT 250MA 5V
HE721C1220 Littelfuse I... 0.0 $ 1000 RELAY REED SPDT 250MA 12V
HE721C1240 Littelfuse I... 0.0 $ 1000 RELAY REED SPDT 250MA 12V
HE721C2420 Littelfuse I... 0.0 $ 1000 RELAY REED SPDT 250MA 24V
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