Comprehensive Solutions for Thermal Testing of Electronics by LIB

When it comes to electronics, even small shifts in temperature or humidity can cause major failures-cracked solder joints, degraded coatings, or malfunctioning microchips. That's why reliable, standards-compliant environmental testing is critical for every electronics manufacturer.

LIB Thermal Testing Chambers are designed to give you precise, rapid, and stable control, so your products survive the real world-whether in extreme heat, deep cold, high humidity, or sudden thermal shock. From temperature–humidity cycling to long-duration high-temperature exposure and instantaneous air-to-air shock, LIB delivers the full range of solutions trusted by aerospace, automotive, and electronics industries worldwide.

Standards Compliance

LIB temperature and humidity chambers are engineered to align with globally recognized standards so that your testing protocols are accepted by regulators, customers, and certification agencies:

IEC 60068 – Environmental testing for electronic and electrical equipment.

ISO 16750 – Environmental conditions and testing for road vehicles, particularly relevant for ECUs, sensors, and in-vehicle electronics.

IEC 61730 – Weathering tests for photovoltaic modules and solar electronics.

Test Precision & Repeatability

Electronics are extremely sensitive to deviations in environmental conditions. LIB chambers provide:

Temperature Range: –70 ℃ to +150 ℃, programmable in fine 0.1 ℃ increments.

Accuracy: ± 0.5 ℃ fluctuation and ± 2.0 ℃ deviation.

Humidity Range: 20 % RH to 98 % RH, held within ± 2.5 % RH.

Ramp Rates: Heating at 3 ℃/min and cooling at 1 ℃/min, minimizing downtime between cycles.

Sensors: PT100 Class A probes with ± 0.001 ℃ resolution for high-sensitivity monitoring.

These capabilities allow precise cycling tests, from gradual long-term soaking to rapid humidity ramps. For example, a printed circuit board can be cycled between –40 ℃ and +85 ℃ at 85 % RH to replicate five years of field use in just weeks.

Extreme Temperature Capability

For processes that demand elevated thermal stress, LIB Environmental Ovens deliver wide working windows from ambient up to 1200 ℃. This covers diverse applications such as:

Polymer curing for encapsulants or adhesives in electronics packaging.

Metal alloy testing for connectors and enclosures.

Thermal aging for semiconductor reliability assessment.

Operational Accuracy

Stability: ± 0.5 ℃ fluctuation and ± 2.0 ℃ deviation across the chamber.

Ramp Rates: Up to 6 ℃/min, drastically reducing cycle times in production labs.

Uniform Heating: Dual-fan circulation ensures hot and cold spots are eliminated, delivering consistent results for every specimen.

Relevant Standards

IEC 60068-2-2: Dry heat testing for electronic equipment.

IEC 60068-2-78: Damp heat, steady-state conditions.

Built from SUS304 stainless steel interiors with polyurethane insulation, LIB ovens maintain thermal performance while cutting energy costs. This robust design ensures repeatability in long-duration trials, making them indispensable for life-cycle verification of consumer electronics, EV batteries, or aerospace avionics.

Two-Zone Thermal Shock Chambers

LIB's two-zone chambers provide a direct transfer method, moving test specimens between two independently controlled zones-one hot and one cold. The basket holding the samples travels vertically or horizontally between these zones in 3 seconds or less, ensuring rapid thermal transition without exposure to ambient air.

Core Specifications

Temperature Range: –75 ℃ to +220 ℃.

Transfer Time: ≤ 3 s.

Recovery Time: ≤ 5 min after transfer.

Precision: Fluctuation ≤ ± 0.5 ℃; deviation ≤ ± 3.0 ℃.

Applications
Two-zone systems are especially suited for semiconductors, PCB assemblies, and consumer electronics, where repeated exposure to extreme hot and cold cycles reveals solder joint weaknesses, material fatigue, and bonding reliability. They are compact, efficient, and ideal for labs requiring continuous cycling without interruption.

Three-Zone Thermal Shock Chambers

LIB's three-zone chambers add a dedicated ambient zone in addition to the hot and cold zones. Instead of direct transfer, samples are automatically cycled through hot → ambient → cold, or cold → ambient → hot, closely simulating real-world temperature transitions where products gradually pass through intermediate conditions.

Core Specifications

Temperature Range: –75 ℃ to +220 ℃.

Transfer Time: ≤ 3 s between zones.

Recovery Time: ≤ 5 min after transfer.

Precision: Fluctuation ≤ ± 0.5 ℃; deviation ≤ ± 3.0 ℃.

Applications
Three-zone systems are ideal for automotive electronics, aerospace equipment, and defense-grade microelectronics, where components often experience sudden but multi-step temperature transitions such as outdoor-to-indoor shifts or altitude-related shocks. These chambers ensure a more comprehensive simulation of complex environments compared to two-zone systems.

Tailored to Your Needs

Multiple cable ports, sample holders, and fixturing solutions.

Dimensions ranging from 100 L benchtop chambers to 1000 L walk-in systems.

Programmable profiles with up to 120 stored programs and 100 steps each.

Safety & Protection

Over-temperature and leakage protection.

Phase-sequence safeguards and grounding interlocks.

After-Sales Commitment

3-year warranty plus lifetime maintenance.

24/7 English-speaking technical support.

Global spare-parts supply and free replacement units if remote solutions are not possible.

With precise temperature–humidity chambers, high-temperature ovens, and rapid shock chambers, LIB gives electronics manufacturers everything needed for compliance, durability, and product reliability.

Contact LIB Industry today to request a custom quotation. Discover how LIB can help your team accelerate testing, cut costs, and meet international standards with confidence.