Guidelines for Lightning Protection according to RTCA DO-160G Level 4

Friday, September 09, 2011

Mission Viejo, CA (September 8, 2011)Holt Integrated Circuits, a world leader in data bus IC’s for commercial and military avionics, today published a new application note (AN-301) which provides guidelines for protection against lightning induced transients applied to Holt’s latest generation of ARINC 429 line drivers and receivers. The circuits recommended in AN-301 were all tested according to RTCA/DO-160G, Section 22, Level 4 Pin Injection Test Waveform Set A (3 & 4), Set B (3 & 5A) and Set Z (3 & 5B).

The recent move from aluminum to newer composite air frames has made lightning susceptibility a major issue in aircraft design and reliability. Most lightning susceptible components now need to meet RTCA/DO-160G, Section 22, Level 4 waveforms, which generate far higher voltages than the previous Level 3 waveforms. AN-301 provides the user with the necessary guidelines to enable compliance of Holt products with RTCA/DO-160G, Level 4 waveforms. AN-300 is also available to enable compliance to RTCA/DO-160G, Level 3 waveforms. Both app notes are available upon request from Holt.

“Holt is firmly committed to providing customers with the best guidelines and recommendations to ensure our products meet or exceed the latest standards and regulations”, said Anthony Murray, Director of Business Development at Holt. “All of Holt’s latest ARINC 429 products have been designed and tested for DO-160G Level 4 waveform compliance”.

Holt’s latest products complying with DO-160G Level 4 include HI-8596, a 3.3V single supply ARINC 429 line driver, HI-3593, a single chip ARINC 429 protocol IC with integrated line driver and two line receivers and HI-3717, the first single chip ARINC 717 solution on the market.

To request information on Holt’s ARINC 429, CAN, MIL-STD-1553 and other aerospace products, readers should contact Holt at (949) 859-8800, by e-mail at, or visit the Holt Web site at


About Holt Integrated Circuits

Located in Mission Viejo, CA, Holt Integrated Circuits is a major supplier of ICs for avionics and military data bus and display applications.  The company’s products are specified by more than 400 manufacturers worldwide and are employed in flight control, navigation, engine management, communications, safety equipment, and in-flight entertainment systems.

Holt’s range of ICs supporting the ARINC 429 standard is the widest in the industry, and its display drivers offer high-voltage operation as well as innovative design features to enhance ease of use and testability.  Holt’s transceivers for MIL-STD-1553 applications are recognized as the industry’s smallest and have the lowest power consumption.  In addition, Holt also offers MIL-STD-1553 protocol ICs, Manchester encoder/decoders and interface transformers.  Select products are available to DSCC SMD specifications.  Holt also offers product compliant to the European Union "RoHS Directive 002/95/EC".

Holt Integrated Circuits is ISO 9001:2008 registered and is a STACK certified supplier.