Used Temperature Forcing Machines for Sale | Active Thermal Control (ATC)

Chroma ATE is widely known for automated test equipment (ATE) and supporting systems used in advanced electronics and semiconductor environments.
Within Chroma’s thermal lineup, their temperature forcing platforms are built to deliver fast, controlled temperature changes at the device level, helping teams
validate performance under real operating conditions. These systems are often used anywhere temperature is a variable that must be controlled precisely during
characterization, validation, and production test.

This page is focused heavily on the King Cobra 3 platform, specifically the 31000K series configuration, including
the King Cobra 3 31000K / A01-000908 system.

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What is the King Cobra 3 31000K system?

The King Cobra 3 is a temperature forcing system designed to deliver controlled hot and cold air to a device under test (DUT) through a
thermal head and ducting interface. In practical terms, it is used to push a DUT to a specific temperature, hold it stable, and move to another setpoint
quickly and repeatably. This enables temperature-dependent testing without needing large environmental chambers for every workflow.

The 31000K series is part of Chroma’s Cobra thermal family and is commonly associated with compact, high-performance thermal forcing for
engineering validation, characterization, and test workflows. Configuration can vary by application, so the best way to confirm exact capability is to verify
the system configuration and options associated with the unit, including any identifiers such as A01-000908.

What temperature forcing provides

• Faster temperature transitions: Rapid movement between setpoints supports higher throughput and more efficient test time.
• Tighter control at the device: Helps stabilize DUT temperature where it matters, not just the surrounding room air.
• Repeatable thermal conditions: Improves consistency across runs and reduces variability in thermal-dependent measurements.
• Compact footprint: Temperature forcing can be a more space-efficient approach than large chambers for many DUT workflows.
• High-power thermal management: Designed to manage higher dissipative loads where the DUT generates meaningful heat during test.

Why teams use King Cobra systems

Many modern devices and assemblies change behavior as temperature changes. Temperature forcing makes it possible to verify performance across a thermal range
in a controlled, repeatable way. This matters for:

• Post-silicon validation and characterization
• System-level test workflows
• Device safeguards during thermal stress testing
• High-wattage DUT testing where thermal runaway risk must be managed
• Engineering and lab environments that need reliable thermal capability without a full chamber-based setup

Common applications

Temperature forcing is used across industries where electronics must be proven under thermal extremes or controlled temperature conditions, including:

• Semiconductor and electronics validation
• High-performance computing and data center hardware test
• Automotive electronics and reliability workflows
• Aerospace and defense electronics test
• General device development where temperature is a key variable

What to pay attention to on a 31000K system

Temperature forcing performance is not just “hot and cold.” Real-world results depend on how the system is configured and integrated.
The areas that typically matter most are:

• Temperature range and stability: The achievable range and how tightly the system holds setpoint at the DUT.
• Ramp performance: How quickly the system transitions between setpoints under your DUT heat load.
• DUT power dissipation handling: The ability to maintain control when the DUT generates heat during test.
• Interface and socketing approach: Ducting, nozzles, and fixture interfaces heavily influence real DUT performance.
• Safeguards: Monitoring and protection features intended to reduce thermal runaway risk during high-power testing.
• Integration: How the unit interfaces with your test environment, handler, bench workflow, or automation plan.

King Cobra 3 31000K / A01-000908

If you are referencing the King Cobra 3 31000K / A01-000908, treat the identifier as the system’s specific build or asset reference.
This matters because Cobra-family systems can differ by head configuration, options, software/controls, and integration hardware.
Confirming the configuration ensures the system matches your DUT size, thermal range needs, and power dissipation requirements.

FAQs: Pressed-for-time answers

What is “temperature forcing” in simple terms?

It is a targeted thermal system that pushes hot or cold air onto a device under test to bring it to a set temperature quickly and hold it there for testing.

How is temperature forcing different from an environmental chamber?

Chambers heat and cool an entire enclosed space. Temperature forcing focuses on the DUT and its immediate interface, which can be faster and more efficient
for many workflows, especially when frequent temperature changes are required.

What limits temperature stability at the DUT?

The biggest factors are DUT heat generation, fixture/duct design, sensor placement, airflow path, and how well the interface seals around the DUT.
A strong thermal system still depends on a good mechanical and airflow interface.

Does DUT power dissipation matter?

Yes. If the DUT generates significant heat during test, the thermal system must remove that heat while still maintaining setpoint.
This is one of the most common reasons systems are selected by “dissipative power” capability, not just temperature range.

What information is most useful for matching a King Cobra system to an application?

DUT size, target temperature range, expected DUT power dissipation during test, desired ramp performance, and how the DUT is fixtured or socketed.

Why do some setups struggle to hit cold temperatures consistently?

Common causes include poor fixture sealing, high ambient heat load, insufficient airflow control at the DUT, or a DUT that generates more heat than expected.
The interface design is often as important as the thermal unit itself.

What does “31000K” generally indicate?

It refers to a Cobra-family temperature forcing system series from Chroma designed for high-performance thermal control. Exact capability depends on the specific
configuration and options installed on the unit.