Cross posted from our original LinkedIn article.
Choosing the right connector can significantly impact the performance and reliability of embedded systems. At Open.Tech by Amphenol, we offer a range of connectors that meet stringent VITA standards. This blog post delves into the differences between our VITA 46 R-VPX connectors and VITA 91 MIL-HD2 connectors, examining their specifications, benefits, drawbacks, and notable use cases.
Overview of VITA Standards
R-VPX (VITA 46):
- Standard: VITA 46, also known as VPX, is designed for high-performance, rugged, and modular open-architecture embedded computing systems.
- Applications: Suitable for ground, aerospace, and marine applications, supporting high-speed data processing and robust construction.
MIL-HD2 (VITA 91):
- Standard: VITA 91, also known as MIL-HD2, is aligned with SOSA standards, offering high-density interconnect solutions for military aerospace and defense applications.
- Applications: Ideal for high-speed data interconnect systems in harsh environments, ensuring seamless system upgrades without costly redesigns.
Technical Specifications
The table below provides a side-by-side comparison of the technical specifications for the VITA 46 R-VPX connectors and VITA 91 MIL-HD2 connectors.
| Specification | VITA 46 R-VPX Connectors | VITA 91 MIL-HD2 Connectors |
|---|---|---|
| Standard | VITA 46 | VITA 91 |
| Data Rate | Up to 32 Gbps+ (VITA 46.30 compliant) | Up to 56 Gbps PAM4 |
| Connector Type | High-performance dielectric PCB material | High-density 1.80mm pitch, 4 diff 8 column SOSA-aligned |
| Backwards Compatibility | Yes, with previous VITA 46 and 46.1 standards | No, only with VITA 91 |
| Environmental Standards | VITA 47 | VITA 47, SOSA |
| Shock and Vibration | VITA 72 compliant | VITA 72 compliant |
| EMI Resistance | High, with EMI shielding options | High, with proprietary crosstalk reduction technology |
| Pin Density | Up to 140 signals per inch | 1.80mm pitch, high-density configuration |
| Power Handling | 1.5 Amps per contact | 1.0 Amp per contact |
| Primary Use Cases | High-speed data processing, rugged environments | High-density data interconnects, seamless upgrades |
Benefits and Drawbacks
R-VPX VITA 46 Connectors:
- Benefits: High data rate capability up to 32 Gbps+ Proven reliability in harsh environments Backwards compatibility with previous standards
- Drawbacks: Larger physical size compared to newer standards Requires precise installation to maintain signal integrity
MIL-HD2 VITA 91 Connectors:
- Benefits: Extremely high data rates up to 56 Gbps High-density configuration reduces space requirements Enhanced crosstalk reduction technology
- Drawbacks: Higher cost due to advanced technology May require system redesign for full optimization
Notable Military Programs and Use Cases
- R-VPX VITA 46 Connectors: Widely used in applications requiring high-speed data processing and robust construction. Examples include ground radar systems, airborne surveillance, and naval combat systems.
- MIL-HD2 VITA 91 Connectors: Ideal for high-density data interconnect systems in military aerospace applications. Used in programs such as the Next Generation Air Dominance (NGAD) and Next Generation Combat Vehicle (NGCV).
Conclusion
Selecting the appropriate connector for military and aerospace applications is crucial for ensuring system performance and reliability. Both R-VPX VITA 46 and MIL-HD2 VITA 91 connectors offer unique advantages tailored to specific use cases. By understanding their differences, engineers can make informed decisions that meet their project requirements.
For more information on our range of connectors and to explore how they can benefit your projects, please check out these links.
- VITA 46 Products: Open.Tech | Products tagged with 'vita46'
- VITA 91 Products: Open.Tech | Products tagged with 'vita91'
