26 Reed Switch Manufacturers in 2022
This section provides overview, applications, and principles of reed switches. Also, please take a look at the list of 26 reed switch manufacturers and their company rankings.
Table of Contents
What Is a Reed Switch?
A reed switch is a switch with two magnetizable reeds in a glass tube that turns electrical contacts on and off.
When open, a typical reed switch opens with a small gap between the reed contact edges. When an external magnetic field (e.g., a magnet) is applied to the two reed contact edges, the reed contact edges attract each other and close, closing the circuit.
Applications of Reed Switches
Reed switches are used in the following applications
- Rotation detection of water meters, motorcycle, and bicycle speedometers, etc.
- Open/close detection of doors and lids of white goods
- Detection of liquid level in tanks
- Open/close detection of hydraulic and pneumatic cylinders
Magnets turn Reed switches on and off, so they can be used for non-contact detection. Reed switches are mainly used for the non-contact detection of equipment status.
Reed Switch Principle
The components of a reed switch include a glass tube, a reed strip, a magnet, and a contact.
- Two magnetic reed strips, which are easily magnetized, are enclosed in a glass tube with a certain overlap and spacing.
- When a magnet or other object is brought close, the contact edges associated with the two lead strips are attracted to each other, closing the circuit.
- When the magnet is moved away, the spring force of the leads opens the contacts.
- The contacts are sealed in a glass tube with nitrogen to insulate them from the external environment.
Since the contacts are not contaminated, the reed switch has very low contact resistance. The contacts are mainly made of metal and have a short operating distance, giving them an open/close life of up to several hundred million cycles.
Other Information on Reed Switches
1. Failure of Reed Switches
Reed switches are components with moving parts. Therefore, there is no possibility of failure. The main possible failures include contact failure, contact sticking, and unexpected malfunction.
Contact Failure
Factors that can cause contact failure include deterioration of the magnet over time and carbonization due to chemical changes on the contact surfaces. Since carbonization of the contact surface is unlikely to occur in a nitrogen atmosphere, the glass capillary may be cracked.
Contact Sticking
Contacts may stick due to deterioration of the spring or welding of the contacts due to overcurrent. Deterioration of the spring is mainly due to aging, while welding of the contacts may be caused by an abnormality on the electric circuit side, so caution is required.
Unexpected Malfunction
Unexpected malfunctions may be caused by a random combination of the above two causes. In this case, it is very difficult to identify the cause.
Reed switches are components that have a relatively low probability of failure. To deal with failures, it is essential to design circuits with redundancy and prevent malfunctions. In addition, since reed switches are inexpensive, they are sometimes designed from the outset on the assumption that they will be replaced at regular intervals.
2. Points to Note About Reed Switches
Reed switches are used to sense the proximity of a magnet. However, the operating range over which the switch operates is not uniform, so there is a risk of chattering. Equipment design must take chattering into consideration.
On the other hand, the distance between the contacts of a reed switch is very small, and the contact pressure is very slight. Because they are precision components, they must be used strictly within their rated current values. In addition, even when used within the rated current value, care should be taken not to apply strong shocks.
In addition, the use of reed switches under strong magnetic fields may cause malfunctions. A magnetic shield should be provided to block external magnetic forces in such an environment.
List of 26 Reed Switch Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- Canada
- Germany
- Italy
- Japan
- Taiwan
- United Kingdom
- United States of America
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Pepperl+Fuchs Inc.
Reed Switches
-
-
Reed Switch Manufacturer Ranking
*Including some distributors, etc.Ranking as of January 2023 in United States
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Clippard | 10.3% |
| 2 | AEI | 6.9% |
| 3 | Sprinter Marking, Inc. | 6.9% |
| 4 | Sweeta | 6.9% |
| 5 | PIC | 6.9% |
| 6 | E-Motion, Inc. | 6.9% |
| 7 | Magnelink, Inc. | 6.9% |
| 8 | Pepperl+Fuchs Inc. | 6.9% |
| 9 | Hybrid Electronics | 6.9% |
| 10 | GTek Automation | 6.9% |
| 11 | Aerospace Control Products, Inc. | 3.4% |
| 12 | Controls Warehouse | 3.4% |
| 13 | Celduc Inc. | 3.4% |
| 14 | Euroswitch | 3.4% |
| 15 | Linemaster Switch Corp. | 3.4% |
| 16 | NetSource Technology, Inc. | 3.4% |
| 17 | Anfield Sensors Inc. | 3.4% |
| 18 | Mod-Tronic Instruments Limited | 3.4% |
Ranking as of January 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | AEI | 13.5% |
| 2 | Clippard | 9.6% |
| 3 | Pepperl+Fuchs Inc. | 7.7% |
| 4 | Aerospace Control Products, Inc. | 7.7% |
| 5 | DEETERELECTRONICS | 5.8% |
| 6 | Sweeta | 5.8% |
| 7 | E-Motion, Inc. | 5.8% |
| 8 | Sprinter Marking, Inc. | 3.8% |
| 9 | PIC | 3.8% |
| 10 | Magnelink, Inc. | 3.8% |
| 11 | Hybrid Electronics | 3.8% |
| 12 | NetSource Technology, Inc. | 3.8% |
| 13 | GTek Automation | 3.8% |
| 14 | RSCROUP | 3.8% |
| 15 | Mod-Tronic Instruments Limited | 1.9% |
| 16 | Controls Warehouse | 1.9% |
| 17 | Celduc Inc. | 1.9% |
| 18 | Euroswitch | 1.9% |
| 19 | Linemaster Switch Corp. | 1.9% |
| 20 | Littelfuse | 1.9% |
| 21 | Cosmo Electronics | 1.9% |
| 22 | Anfield Sensors Inc. | 1.9% |
| 23 | Standex-Meder Electronics | 1.9% |
Derivation Method
The ranking is calculated based on the click share within the reed switch page as of January 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- Standex-Meder Electronics: 4,000
- Sweeta: 10
Newly Established Company
- Cosmo Electronics: 2000 (23 years ago)
- Sweeta: 1995 (28 years ago)
- DEETERELECTRONICS: 1982 (41 years ago)
Company with a History
- Coto Technology: 1917 (106 years ago)
- Littelfuse: 1927 (96 years ago)
- RSCROUP: 1937 (86 years ago)
Related Products
Search from All Categories
This is the version of our website addressed to speakers of English in the United States. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.