It should be noted that relays, used in a power switching application, will experience reduced operating life; it is recommended that sales be contacted for advice on specific applications. This reed operates as both an armature and a contact blade.The magnetic field applied to the coil is folded around this tube that makes these reeds motion so that switching work is acts. 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. Figure 4 shows a suitable arrangement for 'D' & 'S' type high voltage relays. 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. Reed relay specifications are different to those of other components normally found in electronic circuits. These relays are intended for use in DC or AC (50Hz to 60Hz) applications. Relays useful for applications where conservation of current is required. Relays are also available with different pin configurations like three pin, four pin and five pin relays. In general breakdown across the contacts occurs at a higher RF peak voltage than DC. A rigorous reliability testing program is therefore a vital tool for providing our customers with technical support, and also for continuously improving the quality of Coto’s products . The standard performance measure of an RF reed relay, adopted by Cynergy3, is Effective Series Resistance (ESR); this is because these relays are very often used in high “Q” circuits, which experience high currents throughout the frequency range, as found in certain ATU circuits. If after the soldering process the customer wishes to clean the PCB's containing Cynergy3 relays then the use of post operative cleaners such as IPA or HCFC based solvents with low pressure brush applicators is recommended. The switch in this type of relay must be mounted vertically United Kingdom, Cynergy3 Components LLC In general, the point of a relay is to use a small amount of power in the electromagnet-- coming, say, from a small dashboard switch or a low-power electronic circuit -- to move an armature that is able to switch a much larger amount of power. Wimborne Dorset BH21 7PE Browse: Portable Equipment. Registered address: 7 Cobham Road, Ferndown Industrial Estate, Wimborne, Dorset, BH21 7PE, United Kingdom. Operate and release times for the relays are quoted with coil suppression fitted (unless otherwise stated). 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. These relays are designed for use in the HF … All reed relay applications wholesalers & reed relay applications manufacturers come from members. reed relay applications. Surface contamination may result in poor conductivity for low-current signals. Cynergy3's range of RF reed relays are carefully designed to provide minimal RF signal loss and low contact resistance. Cynergy3 recommend the following wave flow soldering profile: 250oC ±10oC, immersion time 3 seconds. 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. Care must be taken when hand soldering to the contact terminals, as physical and thermal shocks can damage the glass to metal seals. 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. Dry reed relays are made of coils wrapped around reed switches. Very sensitive reed relays with high coil resistance. By definition, Electrical Relay is a switching device that can be used to open or close the contacts electrically. 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. The reeds have contacts on their overlapping ends. Rhodium contacts are offered, in our 'D' series range, for high voltage applications, where low contact resistance and good current carry performance are required, provided the switching voltage is below 1000 volts DC or AC peak. what is reliability? —}²ªrù¯ôî:Å»{Ø´Ã1. Ein Reedrelais besteht aus einer Magnetspule, die meistens aus Kupferlackdraht gewickelt ist. Because the contacts in a Reed Relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts. The broad range of special reed relays ensures signal level, high current and high voltage applications can be handled extremely safely and precisely. Reed Relay applications continue grow every year de-spite severe competition from other small switching de-vices such as semiconductors and electromechanical armature style relays. Reed Relay Market Size by Applications: Security Systems Telecom Equipment Process Control Systems Automatic Test Equipment Electronic Instrumentation . to minimize magnetic coupling between the relay and external magnetic fields. 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. 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. The reed switch closed contact uses the blade as a spring bias with a non ferrous spacer to avoid completing a magnetic circuit. The normally closed (Form B) reed relay was designed for just such a situation. Coto Technology, Inc. originated in Providence, Rhode Island, USA in 1917 as Coto Coil Incorporated – a company specializing in the design and manufacture of coil windings. Verification of any particular voltage or frequency combination, within the HF band (1–30MHz), can be undertaken upon request. A magnetic field is produced, when power is applied to the coil of a reed relay. Used to simulate the outer conductor of a coaxial cable for high frequency transmission . COIL: An assembly consisting of one or more turns of wire around a common form . Alternatively, for manual soldering iron operations: 350oC ±10oC, application time 3 seconds. The two may be considered directly equivalent, at mains frequency (i.e. 2MHz. In reed relays, current applied to this winding generates a magnetic field which operates the reed switch . 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. These are available with Tungsten or Rhodium contacts, depending on the switching requirements of the applications. When the coil is energized, the two reeds are drawn together such that their contacts complete a path through the … Alternatively Cynergy3 can arrange product testing to other MIL, DEFSTAN or IEC standards with various third party test houses for specific applications. The Potted SIP relay is the industry choice for designs where economy and a great performance are desired in the same compact package. They are ideal for such applications as transformer or cable testing or any other automatic test equipment where high voltages are involved. For such applications we have relays built with high insulation resistance reed switches. Relay Applications. As a result, these are useful for battery powered equipment. Figure 4: Recommended Mounting for "S" and "D" Series High Voltage Reed Relays. to two pins within the relay on each side of the switch . These are available with Tungsten or Rhodium contacts, depending on the switching requirements of the applications. 9006 Series Potted SIP Reed Relays. Mercury reduces the contact resistance and mitigates the associated voltage drop. 50 or 60Hz). 7 Cobham Road Cynergy3's range of RF reed relays are carefully designed to provide minimal RF signal loss and low contact resistance. H‰\“Ëjã@E÷úŠ^&‹ [ª®r@;/æÁxæd©íbI´å…ÿ~úꆌÀÖR×=UtçÛýnßw“ËÆ¡9„ɝº¾á:ÜbÜ1œ»>[®íšéóiþo.õ˜¥µ‡ûu RF Reed Relays. The reed switch is composed of two overlapping ferromagnetic blades (called reeds) hermetically sealed within a glass capsule that is filled with an inert gas. There are numerous applications for electromechanical relays. These are available with Tungsten or Rhodium contacts, depending on the switching requirements of the applications. 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. However, if they are used to hot switch some of these advantages may be lost as reed relays tend to have lower hot switch capacity than EMR's. Reeds that are chosen in this way for the best performance are usually referred to as Instrument Grade reeds. Pickering's relay division has had considerable experience in picking the right reed to use to construct a relay. Mercury-wetted relay • A mercury-wetted relay is a form of reed relay in which the contacts are wetted with mercury. This is achieved through the use of copper plated reed switches, with Rhodium contacts, packaged in carefully designed coil assemblies. Experience has shown, for example, that ruthenium contacts offer much better performance than alternative contact materials except in higher current applications. Please contact sales for any particular requirements. With Sanyu Electric, Nucletron represents the technology leader in the reed relay market. Cynergy3's reed relays are high performance products and the materials and methods of construction are significant factors in achieving performance specifications. A mercury-wetted reed relay is a form of reed relay that employs a mercury switch, in which the contacts are wetted with mercury. Portable Defibrillators - Reed Relay application describes how our reed relay series meet high voltage demands of portable defibrillators with low power consumption 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. The following are some general guidelines, which should be considered when working and designing with Cynergy3's range of reed relays. Cynergy3 Components Ltd Cynergy3 relays are not hermetically sealed (unless stated otherwise) and as such are not suitable to aqueous cleaning solutions or processes. We doesn't provide reed relay applications products or service, please contact them directly and verify their companies info carefully. It should be noted that these parameters will change at a rate of 0.4% per °C change in temperature. important issue when deciding if a reed relay is the best application choice . * Note: ultrasonic cleaning may cause permanent damage to the relay contacts . They are also used in applications … Reed relays are a an excellent choice for lower power switching applications because of their long life and fast operation. Garden Grove 92841, CA Coil Temperature Compensation Coil resistance, as well as 'Must Operate' & 'Must Release' voltages, is quoted at 20°C, unless otherwise stated. Ferndown Industrial Estate Many of the designs manufactured by Cynergy3 Components Ltd are used in Military and Defence systems therefore many of the relay designs have been tested for Bump, Shock and Vibration endurance to the following standards:-, Bump Test: EN60068-2-29:1993 (Or Equivalent), 40g 6ms Pulse Duration, Shock Test: MIL-STD-202G (Or Equivalent), 100g 6ms Pulse Duration Vibration Test: MIL-STD-202G (Or Equivalent), 20g 5-500-5Hz. The input signal may be heat, light, electricity and magnetism. By using DC coils, there may be a reduction in; the danger of incomplete restoration, the contact pressure, and the vibration resistance. switch to coil or screen), caused by surface tracking, can occur more readily at high frequency than at DC. It is recommended that a thermal shunt (Aluminium Clamp) be clamped to the reed switch lead out adjacent to the glass seal; this will reduce the chance of breakages due to thermal shocks. Reed Relay applications continue grow every year de- spite severe competition from other small switching de- vices such as semiconductors and electromechanical armature style relays. 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. It should be noted that all data is presented, throughout, at an assumed ambient temperature of 20°C, unless otherwise stated. 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 Some of them are latching relays, reed relays, power relays, thermal relays and high voltage relays. Reed relays have also found numerous applications in RF and microwaveswitching applications. The 9006 Series is a general-purpose economy potted version of the 9001 for applications with less stringent requirements. Note that the 'D' Series has magnetic screening fitted as standard. The following guidelines should therefore be followed when adopting assembly, soldering and cleaning processes. Ferromagnetic screening can be used to contain this magnetic field, so allowing closer placement of reed relays on a PCB. The coil field moves the blade to the normally open contact blade which … Electromechani- cal relays cannot do this because they are not hermeti … The switching power, when quoted, will be for a resistive load. 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. Rhodium offers superior low contact resistance, which, coupled with Cynergy3's copper plated reed switch technology, enables Cynergy3 to produce very low loss RF reed relays, with exceptional current carry performance. Please contact sales for further information on the suitability of various cleaning solutions. 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. United States, © 2019 Sensata Technologies, Inc. All Rights Reserved. Maximum exposure time 10 seconds. is connected to the coil, a residual voltage is retained at the relay coil which may cause incomplete restoration and faulty operation. Normally closed (Form B) reed relays. The RF reed relays offered by Cynergy3 have various screening options: Unscreened relays maybe used in RF circuits where the highest currents occur at the lower frequency bands e.g. Der Reedschalter sitzt in der Mitte der Spule. Various types of relays are used in various applications based on different criteria such as rating of contacts, number & type of contacts, the voltage rating of contacts, operating lifetime, coil voltage & current, package, and so on. Reed relays can be supplied with changeover switches – the reed switch has a normally closed contact (when no magnetic field is applied) and a normally open contact (which closes when the field is applied). 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. High voltage breakdown mechanisms at RF differ from those at DC. Tungsten is a good general purpose switching contact material but the higher contact resistance means it is not well suited for RF applications. 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. It is an automatic switch when excited with an input signal changes the output circuit quickly. These relays are intended for use in DC or AC (50Hz to 60Hz) applications. The isolation voltages quoted in the data are for DC or AC peak. In switching applications where a semiconductor (transistor, UJT, etc.) Reed switch also called reed relay, is a low current magnetic switch with a concealed pair of contacts that close and open in response to magnetic field near it. For high-speed applications, the mercury eliminates contact bounce, and provides virtually instantaneous circuit … Fully screened relays offer the ultimate in low loss performance, resulting in the lowest ESR figures, significantly reducing the effects of RF coil heating, and maximising current carry performance at elevated temperatures and frequencies. Figure 3: Mounting Configurations to Minimise Magnetic Interference (Note Orientation). Cleaning For selection of cleaners to be used on transfer molded reed relays, see the table. Numerous applications demand switch contacts that are closed for long periods, only opening when a fault condition arises. 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