What is EMI?

2. What is EMI? • A basic working definition • EMI (Electromagnetic Interference) is broadly defined as any unwanted electrical or electromagnetic energy that causes undesirable responses, degraded performance, or failure in electronic equipment. • For our purposes we are usually concerned with radiated and conducted EMI in electronic equipment in command, control, information and communication systems.

3. Sources of EMI and EMP • Radiated and Conducted • High frequency devices • Electronics/computers • Cell phones/radios • Wireless/RF energy • Microwave equipment • Power lines • Electric motors • Electrostatic discharge (ESD) • Lightning (LEMP) • Nuclear event (HEMP) • Others

4. Electromagnetic Compatibility (EMC) • Glenair is in the EMC business! • In a perfect world, every electronic enclosure would have six (6) sides and be completely sealed or welded, with no holes or apertures, providing 100% electronic shielding and containment. • In the real world, electronic enclosures have doors or removable sides, switches, connectors, indicators and gauges, thru-bulkhead fittings, and other openings that need to be electrically “closed” via conductive shielding products and technologies

5. EMC Technologies • Delivering clean data streams, undistorted by EMI, • requires a multi-disciplinary approach • Cable and wire shielding • Grounding springs and pins • Shielded boxes and cases • Conductive platings • Conductive gaskets • EMI backshells • Conduit solutions • Capacitor and diode filter devices

6. What is a Filter Connector? • A basic working definition • Filter connectors use internal capacitors and (optionally) inductors and diodes (for EMP applications) to “strip off” unwanted noise or transient voltages from the signal. • Types include tubular, planar array, chip on flex/board, EE seal and others • “Low-pass” filters attenuate high-frequency noise and allow low-frequency signals to pass • Each application environment dictates different capacitance values and cut-off frequencies to affect desired performance • Virtually any standard connector type can be outfitted with filtering technology

7. Why Use a Filter Connector? • Filters are can be a “planned” addition to an electronic package or, as frequently occurs, added after a problem has been discovered • Easiest permanent EMI/EMP solution – designed to strip off conducted EMI before it passes through the device. • Variable capacitance from 500 pf to 50,000 pf • Small package size – doesn’t consume PCB real estate. • Can easily replace existing non-filtered connector. • Mates with standard connectors – 5015, 26482, 38999, 24308, 83723, 26500, 83513, Mighty Mouse, ARINC, etc. • Moves filtering away from sensitive board electronics when a signal “barrier” is needed in a system. • Can shunt an unwanted electrical surge fast {1X10^-9}

8. When it Comes to Filters… What Glenair CANNOT Do: FIX THE EMI PROBLEM HERE $2 PCB filter solution $1,000,000 board debug problem

9. When it Comes to Filters… What Glenair CAN Do: Fix the Problem Here $300 filter solution With no re-design necessary at board level

10. Electrical Criteria in Filter Device Specification • Selection of filter device types is affected • by the electrical criteria of the equipment: • Operating temperature Range • Working voltage • Current rating • Surge voltage • Dielectric withstanding voltage • Insulation resistance • Frequency Range of All Effected Equipment

11. Multilayer Planar Capacitor Array • Reduced size, weight and superior performance compared • to discrete discoidal or tubular capacitors • Most widely applied type of EMI filter • Design utilizes rugged ceramic capacitor arrays and ferrite inductors in a single block • Available with different capacitance values on individual pins • Connector shell protects the array from thermal, mechanical and environmental damage

12. Basic Filter Array Module Elements Architecture of the planar array enables mixed capacitance values as well as feed-thrus

13. Planar Array Construction • The planar array is a monolithic block of ceramic containing a combination of capacitors, feed-thrus and ground lines/planes.

14. Common Filter Element Architectures The mechanical architecture of the capacitor and its inductive elements allows for optimization for different frequency ranges of interference • C Filter: Single element filter with low self inductance • Pi Filter: Dual capacitors with a single inductive element positioned between

15. Insertion Loss Evaluation • Measure of the degradation experienced by a signal when a device, such as a filter connector is inserted into the transmission path • Measured in decibels (dB), insertion loss must be minimized in low-current electronic systems. • Entire interconnect system contributes to insertion loss; hence the need for grounding and shielding technologies. • Insertion loss values are predictable for each filter type. (Pi) (Pi)

16. EMP/HEMP • “EMP can be produced on a large scale using a single nuclear device” • - Congressional Research Report • High Electro Magnetic Pulse (HEMP) refers to the detonation of a nuclear bomb at a high altitude, which generates a very fast pulse (RF) which can be captured by antennas and long unshielded lines, damaging sensitive electronic circuitry. Sometimes referred to as Nuclear EMP (NEMP). • Lightning can also generate destructive EMP. This is referred to as LEMP. • Other potential sources of EMP include electrostatic discharge (ESD)

17. Glenair’s EMP Solution: Transient Voltage Suppression (TVS) Filter Connectors • Products meet RTCA DO-160 Requirements (electrical performance benchmarks for withstanding EMP, HEMP, lightning strike and other induced voltage surges) • TVS technologies shunt EMP voltage transients directly to ground • TVS diodes and diode modules are integrated into the filter connector package • Diodes can be removed/replaced with relative ease • Decision point: can the capacitor absorb the surge or is a TVS device needed to reduce the surge – or both.

18. Protecting Sensitive Circuits from EMP • Glenair manufactured EMI/EMP Sub-Assemblies

19. Special Technical Considerations and Connector Packaging Options • Most filter connectors are “custom.” • Some design decisions affect performance and compliance • Space grade applications • Hybrid fiber optic/electrical • Soldering procedures vs. clips • Lead free designs for RoHS • Composite materials and lightning • Hermetic sealing • Operating temps to -55° to 125°C • Machined shells/flange location • Clinch nuts/helicoils • Fixed contacts vs. crimp contacts • Variable length PC tails • EMI grounding fingers and gaskets • Package size issues, such as occur with the addition of crimp contacts or TVS diodes. • Filtered connectors are usually “system” qualified.

20. Filter Adapters (Connector Savers) • Non-Filtered interconnect systems can be easily upgraded with the addition of a go-between filter adapter. • Filtered Glenair Sav-Con Adapters are installed between the existing plug and receptacle—enabling filtering without having to change exiting connectors or box layouts • Glenair Sav-Con Filter Adapters can be built for any connector series including MIL-DTL-38999, MIL-DTL-26482, MIL-C-83723, MIL-DTL-24308, MIL-C-83513, and others

21. Full Spectrum EMI/EMP Product Line • Glenair’s commitment to complete coverage of the popular filter technologies and connector styles • Contact termination: PCB, solder-cup, crimp, etc. • Connector style: Receptacle, Jam Nut, Box or Wall mount, Hermetic, Plug, Adapter, or Thru Bulkhead. • Compatibility: Intermateable with standard (non-filter) connectors • Connector Series: D38999, M83723, M26482, ARINC, M24308, M83513, etc. • Connector types: circulars, rack and panel, D-Sub and Micro, hybrid electrical/fiber optic, etc.

22. Standard Part Number Development

23. New Application Development • Connector Series or Specification • Shell Style • Insert Arrangement • Contact Gender • Class • Shell Rotation Position • Shell Material and Finish • Termination Style • Temperature Tolerance • Equipment Operating Frequency Range • Filter Type • Filter Capacitance • Insertion Loss • IR • DWV • Labeling and Marking Use the Application Checklist!

24. Applications for Filter Connectors • DO-160 High Reliability, Mission Critical Systems • Avionics • Missile Control Systems • Radio Transmitters • Fire Control Systems • Radar and Jamming Devices • Satellite Communications and Sensors • Data Transmitters • HEMP Protection • Many Others

25. Summary: Why Choose Glenair for EMI/EMP Filter Connectors? New for 2007: Glenair Capacitor Array Capability! • Full-spectrum EMI capabilities: Screening, grounding, and filtering • Unmatched depth of knowledge and technical support in filter technology • Fast turnaround on both custom and catalog filter connector solutions • Turnkey filter connector cable/harness assemblies • Free application engineering and design services • Advanced lead-free filter packaging • Circuit protection diodes available for all connector types • Integrated circuit board real-estate within the filter connector envelope • State-of-the-art test and qualification capabilities • Popular multi-layer array filters available for every Glenair connector • Availability: Service, technical support, designs, stock