| Allicdata Part #: | HE647-ND |
| Manufacturer Part#: |
HE721A0540 |
| Price: | $ 0.77 |
| Product Category: | Relays |
| Manufacturer: | Littelfuse Inc. |
| Short Description: | RELAY REED SPST 500MA 5V |
| More Detail: | N/A |
| DataSheet: |  HE721A0540 Datasheet/PDF |
| Quantity: | 1000 |
| 5280 +: | $ 0.70167 |
Specifications
| Turn Off Voltage (Min): | 0.5 VDC |
| Coil Resistance: | 500 Ohms |
| Coil Power: | -- |
| Contact Material: | -- |
| Operating Temperature: | -40°C ~ 85°C |
| Termination Style: | PC Pin |
| Mounting Type: | Through Hole |
| Features: | EMI Shielded |
| Release Time: | 1ms |
| Operate Time: | 1ms |
| Series: | HE700 |
| Turn On Voltage (Max): | 3.75 VDC |
| Switching Voltage: | 200VDC - Max |
| Contact Rating (Current): | 500mA |
| Contact Form: | SPST-NO (1 Form A) |
| Coil Voltage: | 5VDC |
| Coil Current: | 10.0mA |
| Coil Type: | Non Latching |
| Part Status: | Active |
| Packaging: | Tube |
Description
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Reed relays are small electromechanical switches, which are used to easily connect and disconnect electrical circuits with a minimal amount of power. They have a number of benefits that make them popular for many applications, including low noise and high speed, a narrow profile and a long life. The HE721A0540 reed relay is specifically designed for low-power switching and comes in two versions, the low profile version and the standard height version.The construction of the HE721A0540 reed relay begins with a glass enclosure, which is sealed to contain the internal electrically sensitive components. Inside, there are two contacts, which are made of a ferromagnetic material, and an armature that suspends the contacts. The armature is held in place between two permanent magnets, which create a strong electromagnetic field when current is applied to the coil.The working principle of the HE721A0540 reed relay is based on an electromagnetic switching operation. When power is applied to the coil, the internal magnet creates an electromagnetic field, which attracts the armature and pulls it down to close the contact and complete the circuit. When the power is removed, the armature is released, allowing the contact to open and break the circuit.The HE721A0540 is a versatile reed relay that has a number of applications, ranging from logic switching to relaying of low-voltage signals. It has been used in automation, test and measurement, and communication platforms to provide switching solutions with low power consumption, high speed switching, low noise, and a robust switching mechanism.The HE721A0540 reed relay is a reliable, efficient, and cost-effective solution for many applications. It is an ideal choice for low-power switching solutions, due to its low-profile design and low power consumption. Its long life and high frequency operation make it particularly useful for applications such as logic switching, instrumentation relaying, and signal relaying.In conclusion, the HE721A0540 reed relay is an ideal choice for applications requiring low-power switching and a long service life. Its highly reliable performance, low profile design, and low power consumption make it a popular option for many different applications. From logic switching and signal relaying to automation and test equipment, the HE721A0540 reed relay offers a reliable and cost-effective solution.
The specific data is subject to PDF, and the above content is for reference
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| Part Number | Manufacturer | Price | Quantity | Description |
|---|
| HE721A2400 | Littelfuse I... | 0.88 $ | 1564 | RELAY REED SPST 500MA 24V |
| HE721A0520 | Littelfuse I... | 1.48 $ | 1000 | RELAY REED SPST 500MA 5V |
| HE721C1230 | Littelfuse I... | 2.22 $ | 1000 | RELAY REED SPDT 250MA 12V |
| HE721A2410 | Littelfuse I... | 1.06 $ | 1982 | RELAY REED SPST 500MA 24V |
| HE721A0550 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPST 500MA 5V |
| HE721R1200 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPDT 250MA 12V |
| HE721R2400 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPDT 250MA 24V |
| HE721C2430 | Littelfuse I... | 4.29 $ | 1984 | RELAY REED SPDT 250MA 24V |
| HE721R0510 | Littelfuse I... | 6.32 $ | 1000 | RELAY REED SPDT 250MA 5V |
| HE722A0540 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED DPST 500MA 5V |
| HE721B0510 | Littelfuse I... | 2.03 $ | 1000 | RELAY RED SPST-NC 500MA 5... |
| HE721C0540 | Littelfuse I... | 2.58 $ | 1000 | RELAY REED SPDT 250MA 5V |
| HE722A0530 | Littelfuse I... | 3.09 $ | 1000 | RELAY REED DPST 500MA 5V |
| HE721A1210 | Littelfuse I... | 1.23 $ | 6633 | RELAY REED SPST 500MA 12V |
| HE721A0530 | Littelfuse I... | 1.55 $ | 1000 | RELAY REED SPST 500MA 5V |
| HE721A1230 | Littelfuse I... | 1.55 $ | 1000 | RELAY REED SPST 500MA 12V |
| HE721A2420 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPST 500MA 24V |
| HE721C1210 | Littelfuse I... | 1.98 $ | 1436 | RELAY REED SPDT 250MA 12V |
| HE722A1230 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED DPST 500MA 12V |
| HE721R2410 | Littelfuse I... | 2.23 $ | 1000 | RELAY REED SPDT 250MA 24V |
| HE722A1220 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED DPST 500MA 12V |
| HE721C2450 | Littelfuse I... | 2.49 $ | 1000 | RELAY REED SPDT 250MA 24V |
| HE721C0520 | Littelfuse I... | 2.14 $ | 1000 | RELAY REED SPDT 250MA 5V |
| HE721E2400 | Littelfuse I... | 5.31 $ | 562 | RELAY REED SPDT 250MA 24V |
| HE722A1210 | Littelfuse I... | -- | 5380 | RELAY REED DPST 500MA 12V |
| HE721A0510 | Littelfuse I... | -- | 22599 | RELAY REED SPST 500MA 5V |
| HE721C0550 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPDT 250MA 5V |
| HE721A0500 | Littelfuse I... | 0.89 $ | 15427 | RELAY REED SPST 500MA 5V |
| HE722A0510 | Littelfuse I... | 2.55 $ | 1952 | RELAY REED DPST 500MA 5V |
| HE721C0500 | Littelfuse I... | -- | 3640 | RELAY REED SPDT 250MA 5V |
| HE721C2410 | Littelfuse I... | 2.53 $ | 2395 | RELAY REED SPDT 250MA 24V |
| HE721A2415 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPST 500MA 24V |
| HE721C1250 | Littelfuse I... | 2.3 $ | 1000 | RELAY REED SPDT 250MA 12V |
| HE721A2430 | Littelfuse I... | 1.71 $ | 1000 | RELAY REED SPST 500MA 24V |
| HE721A0515 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED SPST 500MA 5V |
| HE722A2450 | Littelfuse I... | 0.0 $ | 1000 | RELAY REED DPST 500MA 24V |
| HE722A1200 | Littelfuse I... | 1.68 $ | 1450 | RELAY REED DPST 500MA 12V |
| HE722A2400 | Littelfuse I... | -- | 1970 | RELAY REED DPST 500MA 24V |
| HE722A0600 | Littelfuse I... | 1.36 $ | 1000 | RELAY REED DPST 500MA 5V |
| HE721A0540 | Littelfuse I... | 0.77 $ | 1000 | RELAY REED SPST 500MA 5V |
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