T-Core active thermal control for high-power IC test
Cohu · Reliability qualification and failure analysis
- Purpose
- Powered high-performance ICs self-heat during test. Temperature departures can change electrical results, so thermal conditions need to be controlled and recorded when interpreting functional or parametric failures.
- Technical approach
- T-Core combines a multi-channel controller with air-, liquid- or refrigerant-cooled thermal heads. Feedback can use a device diode, device power, an auxiliary sensor or a model; each has different measurement locations and assumptions.
- Scope of use
- Cohu lists engineering development, final test, burn-in and system-level test, with integration into its pick-and-place handlers. CPU, GPU, ASIC accelerator and network-processor operating windows depend on the selected head and configuration.
- Limitations and open questions
These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitationsHeater or head readings are not necessarily junction temperature, and a 1 ms control loop does not establish a 1 ms junction-temperature settling time. Power, ramp and temperature ratings depend on the head, interface and configuration; they are not package-reliability guarantees.
What to prepareBLNKK suggests preparing device/package dimensions, transient power profiles, available temperature feedback, socket/head contact and interface materials, setpoints and tolerances, plus calibrated reference temperatures and electrical results.
Confirm with the supplierConfirm head/handler/tester compatibility, junction-temperature measurement or estimation, steady-state and transient acceptance conditions, contact/socket force, and the selected configuration’s power and temperature limits.
- Public evidence
- The current page lists power management up to 800 W, a 1 ms control loop and ramps up to 100°C/s. The REV20200530 sheet specifies ±1°C accuracy at the heater; a September 2025 Eclipse announcement separately reports up to 3 kW for that platform context.
Supporting references
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BLNKK organizes information from public sources. A company profile does not imply a documented solution. Applicability still needs confirmation against your samples and engineering conditions.