This post is an Introduction to Rugged and Reliable Interconnect Products for Transportation
Q - What are the key design requirements for creating rugged and reliable products for Automotive Transportation products?
A - Review below:
USCAR -
- United States Committee for Automotive Research
- Standardized test and ergonomic requirements for high volume applications
LV214
- European based industry standards
GMW3191
- Generally accepted for harsh environment applications
Color Codes
- Visual identification for first responders & service personnel
Q - What are the primary considerations when designing rugged and reliable products?
- Adherence to standardized testing and ergonomic guidelines for high-volume automotive applications.
- LV214:
Compliance with European automotive industry standards for electrical and mechanical performance. - GMW3191:
General Motors’ specification widely accepted for validating components in harsh environmental conditions. - Color Codes
- Visual identification for first responders & service personnel
Q - What color-coding standards are commonly followed for rugged and reliable automotive products?
A - Identify the colors and their meaning as shown below for assisting first responders & service personnel for Rugged & Reliable Products in vehicles being used for automotive transportation.
-
Black: Ground or earth connection.
-
Red: Power supply or positive connection.
-
Yellow: Constant power source, often for accessories.
-
Blue: Control and signaling purposes, like antennas.
-
Green: Low voltage or signal wire, often for speakers.
-
White: Lighting circuits or illumination.
-
Brown: Taillights or marker lights.
-
Orange: High Voltage (above 60 volts)
product highlights here
Q - What are the environmental requirements necessary to ensure that products are both rugged and reliable?
A - Temperature Characteristics (it is not the heat outside that affects the vehicle)
USCAR Call out Range Food Equivalent
T1 (Do not use) -40 to +85(+185 F) Table Space
T2 (Passenger Compartment) -40 to +100C (+212 F) like Coffee Maker
T3 (Engine Area) -40 to +125 C( +257 F) BBQ Smoker style
T4 (On Engine) -40 to +150 C (+302 F) Slow Cooker
T5 (As Needed) -40 to +175 C (+347 F) Bake Temp for Cake Key Connector Features
- Resins to balance hear resistance with costs applied
- Stabilizing Additives Prevents Warpage
- Temperature specific alloys and plating materials
Q - Does heat and moisture affect products or components going into Automotive Transportation vehicles, for example when going into a car wash?
A - Yes, it is the heat inside that is generated inside where the engine and other components under the hood that are subject to moisture & heat as well.
Q - What are the Key Characteristics of Sealed Automotive Connectors for Automotive transportation:
USCAR Call out (Environmental Sealing)
Key Connector Features
- Custom Silicon based seal designs
- Protected locations for interface and cable seals
- Extensive Validation testing
A - IP Ratings (e.g., IP67, IP69K) for protection against dust, water, and high-pressure washdowns using grommets, O-rings, and gel seals to prevent ingress etc.
Vibration Characteristics
Key Connector Features
- Minimize Clearance between housings
- TPA designs bias terminal location
- Mated parts under compression after mating
Applications Summary
Temperature Resistance
-
Operate reliably across wide temperature ranges (typically -40°C to +125°C or higher).
-
Materials like thermoplastics and silicone rubber are used for durability.
· Vibration & Shock Resistance
-
Designed to withstand harsh mechanical stress from road conditions.
-
Often include locking mechanisms to prevent disconnection.
· Chemical Resistance
- Resistant to automotive fluids like oil, fuel, brake fluid, and cleaning agents.
· Corrosion Protection
- Use of plated terminals (e.g., tin, gold, or silver) and sealed housings to prevent oxidation and corrosion.
· Current & Voltage Ratings
- Support various power and signal levels depending on application (e.g., sensors, lighting, ECU).
· Connector Locking Systems
- Secondary locks, CPA (Connector Position Assurance), and TPA (Terminal Position Assurance) features to ensure secure mating.
· Ease of Assembly & Maintenance
- Designed for quick installation and serviceability, often with tool-less or snap-fit designs.
· Compliance & Standards
- Meet automotive standards like USCAR, ISO, and SAE for performance and reliability.
· Customization & Modularity
- Available in various configurations (e.g., 2-pin to multi-pin) and customizable for specific vehicle platforms.