It should be noted that all data is presented, throughout, at an assumed ambient temperature of 20°C, unless otherwise stated. Reed relays have also found numerous applications in RF and microwaveswitching applications. Maximum exposure time 10 seconds. The reed switch closed contact uses the blade as a spring bias with a non ferrous spacer to avoid completing a magnetic circuit. Cynergy3's range of RF reed relays are carefully designed to provide minimal RF signal loss and low contact resistance. Ferromagnetic screening can be used to contain this magnetic field, so allowing closer placement of reed relays on a PCB. Care must be taken when hand soldering to the contact terminals, as physical and thermal shocks can damage the glass to metal seals. Because of the smaller, less massive contacts and the different actuating mechanism, a reed relay can switch about 10 times faster than an electromechanical relay with equivalent ratings. Verification of any particular voltage or frequency combination, within the HF band (1–30MHz), can be undertaken upon request. Because the contacts in a Reed Relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts. United States, © 2019 Sensata Technologies, Inc. All Rights Reserved. Cynergy3's range of RF reed relays are carefully designed to provide minimal RF signal loss and low contact resistance. For such applications we have relays built with high insulation resistance reed switches. Also the internal construction of the relay, including complete epoxy encapsulation, results in reed relays with insulation resistances of 1x10E+12 Ohm or greater, between mutually isolated terminals. Please contact sales for further information on the suitability of various cleaning solutions. As a result, these are useful for battery powered equipment. reed relay applications. Reed Relay; Reed Relays consist a set of magnetic strips which is closed within a glass tube. 7 Cobham Road Ferndown Industrial Estate Cynergy3's reed relays are high performance products and the materials and methods of construction are significant factors in achieving performance specifications. Reed relays have continued in their uses outside the telephone industry, such as for automatic test equipment and electronic instrumentation due to their hermetic seal, fast operate time, extended life to 10 operations and highly consistent contact performance. Tungsten is a good general purpose switching contact material but the higher contact resistance means it is not well suited for RF applications. Tungsten contacts are used exclusively for our high voltage 'D' series range, where they are offered as high voltage switching contact able to switch voltages up to 10kV DC or AC peak at very low current. These relays are intended for use in DC or AC (50Hz to 60Hz) applications. Very sensitive reed relays with high coil resistance. These are available with Tungsten or Rhodium contacts, depending on the switching requirements of the applications. Â$‡Ä†Ûìz§ož©^'ùÖac óÆeéC|÷Ïb~KEÎþÝàèapbUÎg ¯ñz€ cczø endstream endobj 39 0 obj<>/Metadata 36 0 R/Pages 35 0 R/Type/Catalog/PageLabels 33 0 R>> endobj 40 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/Page>> endobj 41 0 obj<> endobj 42 0 obj<> endobj 43 0 obj<> endobj 44 0 obj<> endobj 45 0 obj<> endobj 46 0 obj<> endobj 47 0 obj<>stream Application Notes - Reed Relays High Voltage Reed Relays The principal function of a high voltage reed relay is to isolate as high a voltage as possible, Cynergy3 achieve this through the use of evacuated reed switches. Alternatively Cynergy3 can arrange product testing to other MIL, DEFSTAN or IEC standards with various third party test houses for specific applications. Portable EquipmentReed Relays. Conversely, breakdown outside the switch (i.e. what is reliability? SPNO (FORM A): Normally open - energise to close contacts SPNC (FORM B): Normally closed – energise to open contacts Latching: Contact is bistable – energise “SET” coil to close contacts; energise “RESET” coil to open contacts. The reeds have contacts on their overlapping ends. They are ideal for such applications as transformer or cable testing or any other automatic test equipment where high voltages are involved. The contacts are concealed inside a glass tube and its ends terminated out of the glass tube for external connection. H‰\“Ëjã@E÷úŠ^&‹ [ª®r@;/æÁxæd©íbI´å…ÿ~úꆌÀÖR×=UtçÛýnßw“ËÆ¡9„ɝº¾á:ÜbÜ1œ»>[®íšéóiþo.õ˜¥µ‡ûu Alternatively, for manual soldering iron operations: 350oC ±10oC, application time 3 seconds. United Kingdom, Cynergy3 Components LLC Electromechani- cal relays cannot do this because they are not hermeti … Cynergy3 propose that either low residue fluxes are used in the soldering process (to eliminate the need for cleaning), or that the reed relays are fitted onto the PCB after the cleaning process has taken place. It is recommended that all relay coils be suppressed, by fitting a reverse biased diode across the relay coil; this is essential for latching relay types. Wimborne Dorset BH21 7PE They are also used in applications … Der Reedschalter sitzt in der Mitte der Spule. The broad range of special reed relays ensures signal level, high current and high voltage applications can be handled extremely safely and precisely. Because the contacts in a Reed Relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts. The switch in this type of relay must be mounted vertically The input signal may be heat, light, electricity and magnetism. MERCURY WETTED CONTACT: A form of reed switch in which the reeds and contacts are wetted by a film of Mercury obtained by a capillary action from a Mercury pool encapsulated within the reed switch. The principal function of a high voltage reed relay is to isolate as high a voltage as possible, Cynergy3 achieve this through the use of evacuated reed switches. Cynergy3 relays are not hermetically sealed (unless stated otherwise) and as such are not suitable to aqueous cleaning solutions or processes. The switching power, when quoted, will be for a resistive load. Search our portfolio of Axicom Reed Relay V23100 -V4 products for for Low-temperature Applications and select your specifications. It has a biasing magnet so in the closed position, the relay coil draws no power. RRE Home » Reed Switch and Reed Sensor Applications » Types of Applications » Electromagnetic or Relay Type Reed Relay in Food Processor Application When it is necessary to control a circuit load by using a separate low-power signal, or where the states of several circuits must be controlled by a single signal, such types of Reed Switch applications can be classified are Relay Applications. It is an automatic switch when excited with an input signal changes the output circuit quickly. 2MHz. A reed relay is a type of relay that uses an electromagnet to act directly on reed-like contact of a reed switch contained within a glass envelope, typically bringing the reeds together to make contact when the electromagnet is energised. Coil Temperature Compensation Coil resistance, as well as 'Must Operate' & 'Must Release' voltages, is quoted at 20°C, unless otherwise stated. It should be noted that any combination of voltage and current can be switched, provided they do not exceed the stated switching maximums, for either parameter or the power rating of the contact. By definition, Electrical Relay is a switching device that can be used to open or close the contacts electrically. Relay Applications. They have some parameters that can affect the operation of the circuit, and if the right reed relay is to be chosen, its specification needs to be understood. For high-speed applications, the mercury eliminates contact bounce, and provides virtually instantaneous circuit … Mercury reduces the contact resistance and mitigates the associated voltage drop. All reed relay applications wholesalers & reed relay applications manufacturers come from members. Relays are also available with different pin configurations like three pin, four pin and five pin relays. A mercury-wetted reed relay is a form of reed relay that employs a mercury switch, in which the contacts are wetted with mercury. Reed arrays passed out of use in the mid-1990s, being unnecessary in digital telephone systems such as DMS-100 and 5ESS switch. Garden Grove 92841, CA The benefit of RF screening is that it reduces the RF through losses (ESR) of the relay and extends the relay performance, at high frequencies and high ambient temperatures. Surface contamination may result in poor conductivity for low-current signals. Alternatively relays may be warmed prior to soldering. It should be noted that many of the RF relays do not employ magnetic screening, as this can adversely affect the ESR; in this case refer to figure 3, for a suitable layout for RF relays without magnetic screening. to two pins within the relay on each side of the switch . The following are some general guidelines, which should be considered when working and designing with Cynergy3's range of reed relays. Note that the 'D' Series has magnetic screening fitted as standard. A magnetic field is produced, when power is applied to the coil of a reed relay. 50 or 60Hz). These are available with Tungsten or Rhodium contacts, depending on the switching requirements of the applications. Applications of Electromechanical Relay. Aleph Reed Relay Application Notes Handling Shock forces (e.g., drop from a height of 30cm or more) or application of high pull or twist forces to external terminals may result in permanent damage to relays. Figure 3: Mounting Configurations to Minimise Magnetic Interference (Note Orientation). Numerous applications demand switch contacts that are closed for long periods, only opening when a fault condition arises. Registered address: 7 Cobham Road, Ferndown Industrial Estate, Wimborne, Dorset, BH21 7PE, United Kingdom. Aus einer Magnetspule, die meistens aus Kupferlackdraht gewickelt ist signals as low as femtoamps and nanovolts as such not! 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