Optically Coupled Isolators meet TX, TXV, COTS standards.
September 3, 2010 -
Enabling military electronics design engineers to optically isolate sensitive circuit elements, 4N2x and 4N4x Series respectively consist of 935 or 890 nm wavelength IR-emitting diode and NPN silicon phototransistor mounted in hermetically sealed SMT 6-pin LCC or through-hole TO-78 metal can. Each provides up to 1 kV electrical isolation and is processed to TX and TXV MIL-PRF-19500/486 and /548 specifications. Minimum current transfer ratio ranges from 25%-100% (4N2x) and 50%-200% (4N4x).
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Original Press release
Optek Technology, Inc.
1645 Wallace Dr
Carrollton, TX, 75006-6905
USA
OPTEK's High-Reliability, Optically Coupled Isolators Provide 1kV Isolation to TX, TXV & COTS-Level Standards
Hermetically sealed optoisolators available in surface mount LCCs or TO-78 metal cans...
Carrollton, TX: Providing military electronics design engineers with the ability to optically isolate sensitive circuit elements, TT electronics OPTEK Technology has developed a series of high-reliability, optically coupled isolators that provide up to 1kV electrical isolation with a high current transfer ratio. Designated the 4N2x and 4N4x Series, the optically coupled isolators are hermetically sealed metal packages - either surface mount 6-pin leadless chip carriers, or through-hole TO-78 metal cans - and are processed to TX and TXV MIL-PRF-19500/486 and /548 specifications. COTS-level devices are also available.
"These 4N2x and 4N4x Series devices were developed to meet customer demands for rugged, high-reliability isolators processed to MIL-PRF-19500 TX and TXV standards," said Rodney Bailey, vice president of optoelectronic components for OPTEK Technology. "They are ideal for any high reliability circuit requiring high voltage isolation between input and output, especially in harsh environments. And we provide hermetically-sealed metal packages in either surface mount or through-hole configurations."
The optically coupled isolators consist of a 935nm (4N2x Series) or an 890nm (4N4x Series) wavelength infrared-emitting diode and a NPN silicon phototransistor mounted in a hermetically sealed metal package, with a base contact provided for conventional transistor biasing. Devices are also available with the collector pin electrically isolated from the case.
Devices within the 4N2X Series all exhibit input diode forward current (IF) of 40mA (max), 10mA (typical); collector-emitter voltage (VCE) is rated at 35V (max); with 1kVDC voltage isolation. Their operating temperature range is from -65°C to +125°C.
4N22 Series devices feature a minimum current transfer ratio (CTR) of 25%.
4N23 Series devices feature a minimum CTR of 60%
4N24 Series devices feature a minimum CTR of 100%
Devices within the 4N4x Series all exhibit input diode forward current (IF) of 40mA (max); collector-emitter voltage (VCE) is rated at 40V or 45V (max), depending on package style; with 1kVDC voltage isolation. Their operating temperature range is from -55°C to +125°C.
4N47 Series devices feature a minimum current transfer ratio (CTR) of 50%.
4N48 Series devices feature a minimum CTR of 100%
4N49 Series devices feature a minimum CTR of 200%
The 4N2x Series (TX, TXV) devices are processed to MIL-PRF-19500/486 standards; and the 4N4x Series (TX, TXV) are processed to MIL-PRF-19500/548 standards. Burn-in condition for all devices is as follows: VCE = 10V, IF = 40mA, PD = 275mW, TA = 25°C.
Packaging options for the 4Nxx Series optically-coupled isolators include a standard TO-78 metal can through-hole package; and a surface mount leadless chip carrier (designated with a "U" suffix to the part number). Both package types are hermetically sealed and are compatible with high temperature soldering processes.
For further information please visit: http://www.optekinc.com/contactus.aspx, or email the TT electronics North America Sales Office at sales@ttelectronics-na.com. To access the data sheet and other product information for the 4N2x Series (TO-78) optically-coupled isolators, visit: http://www.optekinc.com/viewparts.asp... or for 4N4x Series (LCC), please visit: http://www.optekinc.com/viewparts.asp...
Visit the TT electronics at the AUSA show in Washington D.C, booth number 2060.
About OPTEK Technology
OPTEK Technology, a division of TT electronics, is a leading manufacturing and solutions provider for sensing and illumination covering the infrared, visible and ultraviolet spectrum; with standard as well as application specific products for a variety of markets, including, but not limited to office machines, industrial equipment, encoders, automotive electronics, military and high-reliability applications, medical diagnostic equipment and solid-state lighting. Headquartered in Carrollton, TX, the company is ISO/TS16949:2002 and BS EN ISO 9001:2000 certified, as well as ITAR registered.
About TT electronics PLC
TT electronics plc is a focused, global electronics group supplying leading manufacturers in the defense, aerospace, medical, transportation and industrial markets. The Group consists of five divisions: Components, Sensors, Secure Power, Integrated Manufacturing Services and General Industrial each delivering technology, products and services to customers in target markets worldwide. TT electronics plc operates from headquarters based in Weybridge, Surrey, with more than 20 global manufacturing locations and more than 6,000 employees worldwide.
Additional information is available from our corporate website: http://www.ttelectronics.com/.
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