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Coto Technology
From coil windings and reed relays to dry reed switches, Coto has established itself as a market leader in product quality and design innovation.
Coto Technology's reed relay manufacturing facility located in Mexicali, Mexico. Coto's switch factory is located in Heerlen, The Netherlands. Coto Corporation, dba Coto Technology, originated in Providence, Rhode Island, USA in 1917 as Coto Coil Incorporated - a company specializing in the design and manufacture of coil windings. During the mid-1960's, Coto expanded its product line by introducing the reed relay - the result of integrating reed switches into coil windings. By 1970, Coto emerged as a leading manufacturer of reed relays with the development of the first patented Low-Thermal EMF reed relay. Coto went on to produce the first ever surface mounted reed relays in 1983, the world's smallest SMD reed relay in 1994, and the first patented reed relay with >8 GHz performance in 2001. In 1998 Coto acquired the Philips Dry Reed Switch Division in The Netherlands, a world leader in reed switches, to form Coto Technology, B.V. For Coto's reed relay division, owning a switch factory provides two critical benefits for its customers: 1) it minimizes potentially disruptive supply fluctuations that affect relay delivery and lead times and 2) it allows for control of the core technology of the reed relay.
Coto's continued investment in technology development supports new product advancements that service the needs of Coto's relay division, as well as that of its reed switch and sensor customers. An example of this is the 2002 release of the RI-80, the world's smallest commercially available reed switch with 5mm glass length.
Today, Coto is a worldwide market leader of small signal switching products sold into the Automatic Test Equipment, Data Acquisition, Instrumentation, Process Control, Telecommunications, Medical and Security markets. Coto specializes in the manufacture of custom relays. Non-standard package sizes and pinouts, custom coil and shielding designs, and multi-pole configurations are common variables. Coto relays are capable of carrying up to six amps, and can provide switching currents up to four amps along with 10-15 KV switching. Coto relays are qualified to the highest electrical test specifications in the reed relay industry. To improve efficiency, enhance responsiveness and increase capacity, Coto has renovated its relay manufacturing facility in Mexico by investing in additional manufacturing automation technology. Manufacturing processes utilizing ergonomic workstations, coupled with fully automated winding, wire termination, molding and laser marking increase efficiency while ensuring high levels of quality. Also, a Learning Center provides Coto employees with educational opportunities, enhancement of job skills, and operator certification.
To further strengthen Coto's position as the leading reed switch manufacturer, Coto has invested substantially in its Netherlands switch factory on capacity expansion and manufacturing automation. Coto has installed new automated equipment for blade forming, blade welding, electrical test and vision systems for inspection, which together improve productivity and enhance quality. The addition of several new sealing mills improves responsiveness, adds overall capacity for further growth and supports our continued efforts to expand product offerings.
Coto Technology Uutiset
(6.5.09) Coto Technology - 35th year of the DYAD™
The Original Surface Mount Reed Switch
Ideal for General Purpose and Commercial Switch and Sensor Applications
- Sputtered Ruthenium Contacts
- Stable Contact Resistance
- Long Life (1 Billion ops)
- RoHS Compliant
Coto Technology, worldwide leader in small signal switching, now manufactures the DYAD in Coto Technology's new reed switch plant featuring state-of-the-art Class 100,000 cleanroom facility, sealing, assembly, sorting and test equipment. The DYAD just keeps on improving on its great history.
Download DYAD Switch datasheet.
Smallest, Mass-Produced Form “C” SMD Reed Relay Available
Coto Technology’s 9852 Form “C” SMD, ultra-miniature reed relay features longer life and optimized performance for ATE, Process Instrumentation and Telecommunications applications. Expected life is 200 million cycles (N/O contact), and 100 million (N/C) at 1V 10mA load. RF bandpass (-3dB) is 4GHz (N/O) or 3GHz (N/C). Isolation and return losses at 1 GHz are –10dB and –20dB respectively. An external magnetic shield reduces electromagnetic interaction between closely spaced relays. And, with a footprint of 0.078 sq. in., the 9852 is the smallest Form “C” SMD reed relay available in high-volume mass production. The 9852’s combination of small size, long life and good RF bandpass is unattainable by electromechanical or micromachined relays. Gull-wing, “J”-lead or axial surface-mount styles are available in tubes or tape-and-reel spools.
Coto Develops a Dual-Switch, Miniature SIP Reed Relay
Coto Technology has introduced the 9092 Miniature SIP reed relay - a taller version of its popular 9091 miniature SIP reed relay. The 9092 (which measures .600"x.150"x.350") provides designers a small SIP relay with 2 Form A switching capability in a package with the same footprint as the standard 9091. Raising the height of the relay allows for the additional switch, while a 6 pin layout on a 0.1" pitch grid provides electrical connections. A standard external magnetic shield reduces interaction of relays that may be mounted in close proximity; high dielectric strength materials and molded thermo-set body provide a robust design. The 9092 utilizes Coto's 10W switch technology, making these SIP relays ideal for use in ATE applications and other high reliability test, measurement and telecommunications applications where high board density and long life are key requirements. The 9092 Miniature SIP relay is available in 5V and 12V coils with an optional diode.
Coto Expands Economy SIP Series
Coto Technology has expanded its 9081 Spartan SIP Reed Relay Series by adding two new Form C versions into this popular SIP package. The 9081C has a .2"x.4"x.1"x.1" footprint while the 9081C1 has a .2"x.2"x.2"x.2" footprint. By offering both pin configurations, Coto is able to match any competitor offering similar products. The 9081C reed relays contain Coto's popular RI-90 Form C reed switch – one that is known for its high reliability. The SIP relays are sturdy and well suited for a wide variety of applications in Security, Instrumentation, and Process Control. Parts are available in the standard plastic molded version or with an optional external magnetic shield to reduce interaction of relays mounted closely.
Coto Introduces Ground-Breaking BGA Relay
Coto Technology has introduced the first four independent channel, form-A, planar BGA Reed Relay. The B41 series is the latest offering in Coto's growing line of RF capable, reed relay products. Unlike Coto's B10, B40 and other high-performance RF reed relay products, no slot or hole in the PC board is required to mount the device – a feature which simplifies the design of multi-layer boards. Coto's new, patented technology also allows for shorter RF paths in a controlled 50 ohm environment to minimize signal attenuation. Each channel has an RF insertion loss (–3dB roll-off point) of >8 GHz. A combination of coaxial and magnetic shielding reduces adjacent closed inter-channel RF crosstalk to –40dB at 1 GHz test signal and magnetic interaction between channels is reduced to <16%. Applications include Mixed Signal & IC Testers where the B41's high package density and excellent RF performance are particularly important. BGA packaging, with JEDEC standard dimensions, allows B41 relays to be easily installed on PC boards designed for surface mount processing using either manual or automated pick-and-place techniques.
Changeover Dry Reed Switches Now Available from Coto
Coto Technology has introduced the RI-90 Series changeover dry reed switch. With an initial contact resistance of 140 milliohms (max), the switch is ideal for high-reliability applications in Automatic Test Equipment, Security, Industrial and Consumer Applications. Additionally, the RI-90's Form C contact configuration offers more options for reed switch sensors applications. Coto's RI-90 Series, with a 15mm max glass length, is a single-pole, double-throw (SPDT) type, having three contacts: a common contact, a normally-open contact and a normally-closed contact. When brought in the proximity of a magnetic field, the common contact will first open with the normally-closed contact (NC), and then make contact with the normally-open (NO) contact as long as the magnetic field is applied. The RI-90 Series Ruthenium contact layers provide long-life switching at a wide variety of loads. The maximum switching current is 400 mA and 125VAC or 175VDC switching voltage.
New BGA Reed Relays Provide Superior RF Performance
Coto Technology, of Warwick, RI, has announced the release of two patented ball-grid-array (BGA) Reed Relays. The B10 and B40 BGA relays utilize breakthrough patented technology to provide leadless relay designs with enhanced RF performance. The signal path in the BGA between input and output is designed as an RF transmission line, with an RF impedance close to 50 ohms throughout the relay. With either B10 or B40 BGA relays, the designer is able to switch or pass signals with wider bandwidth and faster rise time than alternate technologies. This is particularly important for Mixed Signal IC testers. BGA packaging allows relays to be easily integrated on boards designed for surface mount processing. The B10 is a single channel Form A BGA that uses a minimum board space of only 0.1 sq in. 3.3V or 5V coils are standard and the RF insertion loss (–3dB roll-off point) is >10 GHz. Single channel simplicity makes B10 an economical choice for RF switching, with prices < $10.00 at 1K. Delivery: stock to six weeks. The B40 is a BGA with four independent form A channels in one quad package requiring only 0.215 square inches of board space. Both 3.3V and 5V coils are available and the RF insertion loss (–3dB roll-off point) is >11 GHz. Interchannel RF crosstalk is minimized by a combination of coaxial and magnetic shielding