[Solid State Relays] [Mechanical
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[Relay Derating]
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This is a listing of Relay manufacturers and vendors. The listing
is subdivided into Mechanical Relay, and Solid State Relays.
The types of products or devices they produce are listed under the company name, in alphabetic order.
The list covers companies making any relay type that involves a mechanical movement.
Use the link above to locate relay functions using silicon, or some other semiconductor.
Companies producing mechanical relays:
Aleph International Corp. {Mercury wetted-high power/voltage-high insulation resistance 'IR'-low thermal EMF, RF relays-SMT relays}
Altech Corp. {Safety Relays, ASME A17.1-2000, 2-8 contacts, 6-10A, 5-220V DC coils}
American Electronic Components Inc. {Large Current Relays, Automotive Relays, PCB, DIN rail or chassis mounting relays for loads from 1A to 30A/230VAC, Safety Relays}
American Relays Inc. {Reed/High Voltage/Power Relays}
American Zettler, Inc. {General Purpose/Automotive-HVAC-Power-Telcom}
Amperite {Time Delay Relays, PCB Relay}
Comus International {Dry, Mercury Wetted, High Voltage Reed Relay}
COSMO Electronics Corp. {Reed Relays; 1A SPST-NO, 1A SPST-NO, 1ASPST-NO}
Coto Technology {Dry Reed Switches - Reed Relay}
Deltrol Controls {General Purpose-Power-Latching Relays-Buzzer/Clappers}
E. Dold & Sohne KG {PCB Relay; Industrial Safety Relays, Miniature Power Relays}
Guardian Electronic Manufacturing Co. {Mechanical 1 to 30 Amp}
Hamlin {Reed Relays; Up to 2 form 'A' or 1 form 'C' contacts, Single pole form 'A' or single pole form 'C'}
Hasco Components International Corp. {Reed/Electromechanical Relay Manufacturer}
Leach International Corp. {Military qualified subminiature and half-crystal can relays Commercial/Military}
MEDER electronic {Reed Switches/Relays}
NEC {Signal Relays, Power Relays}
NTE Electronics Inc. {General purpose, PCB mount, Power, Reed, Time Delay, and Magnetic Latching relays}
Omron Electronics Inc. {Mechanical-PCB-Low Signal}
Panasonic Electric Works {Power, Signal, PhotoMOS and Automotive Relays}
Phoenix Contact {Rail Mounted Mechanical Relay Modules}
Pickering Electronics {SL & DL Reed Relays}
Standex Electronics {RTC,DTC,TTL and HTL compatible Reed Relays}
Teledyne Relays {Mechanical Relays/TO5/Aerospace/Commercial Industrial}
Tyco Electronics {Switching capabilities: dry circuit to 1,600A, up to 70kV, and as high as 6 GHz. Electromechanical Relay}
NOTE: SL [Single Inline] and DL [Dual Inline] are package types, with either a single or double row of pins.
Related Engineering Data; [Mechanical Relays only]
Relay Contact Bounce.
How to Derate Mechanical Relays.
This is a general listing of [OEM] manufactures of Mechanical Relays (a Reed relay is a mechanical device). Solid State relays have no moving parts.
Solid State Relays [SSR] are bounce free, switch faster than
mechanical relays, and have no moving parts. In most cases an
opto-isolator is used to control a FET which would control the switching
current.
ElectroMechanical Relay [EMR] is an electromagnetically-operated
switch. An electromagnetic relay is an electrical relay in which the designed response is
developed by the relative movement of mechanical elements under the action of a current in the input circuits. An actuating current on a coil operates one or more galvanically
separated contacts. This type of relay must make mechanical contacts in
order to switch a load. These contacts are prone to oxidation breakdown,
and bounce. However Reed relays are hermetically sealed and do not suffer
from oxidization as much as open contact mechanical relays do.
Reed Relay A reed relay is operated by an electromagnetic coil or solenoid which, when energized,
causes two flat magnetic strips to move laterally to each other. The magnetic reeds serve both as magnetic
circuit paths and as contacts. Because of the critical spacing and the frailty of the arrangement, the reeds are
usually sealed in a glass tube. Contacts are made from a ferromagnetic material (reed)
which are encapsulated in glass. An energizing coil is wrapped around the
glass and an EMF brings the two reeds together, closing the contacts.
There are two types; Dry or Wet. Both types are identical except a Wet
Reed relay has a small amount of mercury added inside the glass tube,
providing a more consistent contact resistance.
Latching Relay [Magnetic Latching Relay] A bistable polarized relay having contacts that latch in either position. A
signal of the correct polarity and magnitude will reset or transfer the contacts from one position to the other.
Forms:
.. Form A: Normally open, Single Break, when the relay is energized the circuit is
completed [SPST]
.. Form B: Normally closed, Single Break, when the relay is energized the circuit is
open [SPST]
.. Form C: Two position [SPDT]
.. Form K: Three position, center off [SPDT]
.. Form M: Three position, center on [SPDT]
.. Form X: Single throw, double break [normally open]
.. Form X: Single throw, double break [normally closed]
.. Form Z: Double throw, double break [two position]
.. Form KK: Double throw, double break [3 position]
.. Form MM: Double throw, double break [Three position, center on]
Neutral: The transition from one switching position into another
is independent of the direction of excitation
Polarized: The transition from one switching position into another
is dependent on the direction of excitation
Monostable: The transition to one switching position due to an
input excitation, only last while the input excitation is present,
once the excitation is removed the relay returns to it's original
position.
Bistable: The transition to one switching position due to an input
excitation, once the excitation is removed the relay does not return to
its original position.
The relay requires another excitation to return to
its original position.
DOD General Specifications:
MIL-PRF-6106; Electromagnetic Relays
MIL-PRF-39016; Relays, Electromagnetic, Established Reliability
MIL-PRF-32085; 270 V DC Electromagnetic Relays, Established Reliability
MIL-PRF-83536; Electromagnetic Relays, Established Reliability
MIL-R-5757 Electromagnetic Relays
.... MIL-R5757/29 Dry Reed Relays, 1PST to 4 PDT Contacts
MIL-R-83407 Mercury Wetted Reed Relays
MIL-R-83516 Dry Reed Relays
MIL-DTL-19648 Time Delay Thermal Relays
MIL-DTL-26126 Over-voltage DC Relays
MIL-DTL-83725 Vacuum Relays
This is a general listing of Relay manufacturers and vendors. The listing is sub-divided into either mechanical relay manufacturers or solid state relay manufacturers. The types of products or devices the manufacturer produces are listed under the company name, in alphabetic order. Additional component manufacturers may be found by selecting the Components icon below, or Equipment manufacturers may be found by selecting the OEM Equipment icon.
{Mechanical Relay Manufacturers Index}
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