For OEMs operating in harsh environments, electronics must do more than function they must survive. From extreme temperatures to constant vibration and high humidity, real-world conditions push components to their limits.

At Marlin Technologies, environmental testing ensures electronic systems are built for durability, reliability, and long-term performance across industries like agriculture, construction, marine, and transportation. Ultimately, this work goes far beyond the lab it ensures our customers’ machines perform reliably over time, so their customers can operate with confidence and focus on productivity instead of troubleshooting electronics.

What Is Environmental Testing for Electronics?

Environmental testing evaluates how electronic components perform under physical stress conditions such as:

  • Extreme heat and cold
  • Mechanical vibration and shock
  • Moisture, humidity, and water exposure
  • Electrical load and signal stress

The goal is simple: identify vulnerabilities before products reach the field, reducing downtime, preventing costly disruptions, and strengthening long-term product performance.

Marlin’s process is built around a comprehensive Design Verification Plan & Report (DVP&R) with 37 standardized tests aligned to industry benchmarks.

OEM Industries That Require Harsh Environment Validation

Marlin supports a wide range of OEM markets where reliability is critical:

  • Agriculture equipment
  • Construction machinery
  • Marine systems
  • Refuse and utility vehicles
  • Turf care equipment
  • Railroad and defense applications
  • Transportation systems

Across these industries, electronics must stand up to heat, cold, vibration, moisture, and contaminants day after day, year after year.

Inside Marlin’s Electronics Test Lab

Marlin’s test lab combines advanced equipment with custom-built systems to simulate real-world conditions, including:

  • Thermal chambers (-40°C to 85°C)
  • Vibration shake tables
  • Electronic load banks
  • Multimeters and oscilloscopes
  • Humidity chambers and wash basins
  • Custom wiring harnesses and fixtures
  • LabVIEW-based data acquisition systems

While testing follows standardized procedures, setups can be tailored to match real-world use cases and OEM-specific applications.

Thermal Testing: Ensuring Performance in Extreme Temperatures

Thermal stress is a leading cause of electronic failure. Marlin performs multiple types of thermal testing for electronics, including:

  • Thermal cycling and thermal shock
  • 4-corner testing (voltage + temperature extremes)
  • High-load burn-in testing
  • Temperature storage validation

Testing typically spans -40°C to 85°C, simulating real-world extremes.

Typical Thermal Failure Mechanisms

Rather than assuming failures are common, thermal testing is designed to reveal potential weaknesses early, including:

  • Solder joint fatigue
  • Delamination
  • Wire bond failure
  • Thermal runaway
  • Component drift

In one case, testing highlighted a soldering weakness that could have led to field failure resulting in process improvements before product launch.

Vibration Testing: Simulating Real-World Stress

Electronics in heavy equipment and vehicles are exposed to constant vibration. Marlin validates durability using standards like ISO 15003.

Using advanced vibration systems, engineers replicate stresses from:

  • Shipping and transport
  • Installation
  • Daily operation

What Vibration Testing Helps Uncover

Testing does not assume defects it is designed to identify risks under real-world stresses, such as:

  • Potential solder joint fatigue under repeated motion
  • Connector or harness retention concerns
  • Component movement under extreme vibration
  • Intermittent electrical behavior

Standardized vibration profiles ensure consistent, repeatable validation while helping engineers strengthen designs before production.

Moisture & Ingress Testing: Protecting Against Water and Corrosion

Moisture exposure is one of the most damaging environmental factors for electronics. Marlin performs:

  • IP67 testing (water submersion)
  • High-humidity soak testing (93% RH for 240 hours)
  • Cyclic damp heat testing
  • Salt spray corrosion testing

These tests validate resistance to:

  • Corrosion
  • Electrical shorts
  • Material degradation

Combined Environmental Testing: Real-World Simulation

In the real-world, stress doesn’t occur in isolation. Marlin conducts multi-stress testing to better simulate field conditions.

Examples include:

  • High heat followed by rapid cold-water exposure
  • Simultaneous temperature cycling and humidity
  • Electrical loading during environmental stress

This approach helps uncover interaction effects such as expansion, contraction, and vibration acting together that single condition testing may miss.

Industry Standards and Compliance

Marlin’s environmental testing aligns with key standards, including:

  • ISO 16750
  • SAE J1455
  • ISO 15003
  • IEC 60529 (IP ratings)
  • ISO 11452, ISO 10605, ISO 7637-2

When standards don’t fully address a use case, Marlin develops its own validation methods such as its 1 million button press test for keypad durability.

Data Collection and Test Validation

Every test is supported by detailed documentation:

  • Data logs and performance monitoring
  • Visual inspection and photo documentation
  • Formal test reports

Pass/fail criteria focus on:

  • Continued functionality
  • Absence of physical or performance degradation

If a test reveals a weakness, it drives root-cause analysis and design improvements before production release.

How Environmental Testing Improves Product Design

Environmental validation feeds directly into engineering decisions. Over time, Marlin has developed deep expertise in:

  • Identifying design sensitivities under stress
  • Selecting more robust materials and components
  • Improving manufacturability and assembly processes

This continuous feedback loop results in more durable products and stronger long-term performance in the field.

Continuous Improvement: Expanding Test Coverage

No validation approach is ever “complete.” As products evolve, so do expectations around durability and longevity.

In some cases, extended or combined condition testing can further strengthen validation for example:

  • Long duration vibration testing with connectors fully installed
  • Thermal cycling combined with mechanical stress on housings
  • Longevity focused testing on assemblies like overmolded components or sealed switchers

These types of scenarios represent opportunities to expand validation methods, helping ensure products perform not just in initial testing but over years of real-world use.

Marlin continuously evaluates test strategies to align with how products are actually used in the field, reinforcing long term reliability.

Why Marlin’s Electronics Testing Stands Out

Marlin differentiates itself by:

  • Testing beyond expected operating conditions
  • Creating custom validation methods when needed
  • Combining multiple environmental stress factors
  • Incorporating engineering, production, and field feedback

Every product undergoes multiple layers of scrutiny before approval.

Key Takeaway: Confidence in Real-World Performance

Environmental testing isn’t just about compliance, it’s about confidence.

It ensures that:

  • Products perform in heat, cold, wet, dry, dirty, and high vibration environments
  • Machines continue operating reliably over time
  • OEM customers can trust their systems in the field
  • End users can focus on getting work done not worrying about electronics

Tips for Designing Electronics for Harsh Environments

  • Test beyond expected operating conditions
  • Document every detail throughout validation
  • Plan for combined environmental stresses
  • Use proven components where possible
  • Revisit assumptions as products evolve