TSMC 300mm Fab — ABB VFD DC Capacitor Thermal Monitoring

01 The Problem

At a TSMC 300mm fab, dozens of variable-frequency drives control the giant pumps and air handlers that keep the cleanroom alive. Inside each VFD, a bank of DC link capacitors smooths the power — and when one of those capacitors fails, it doesn't just go bad. It explodes, takes down the entire production line, and forces every tool on that line to reset. Each hour of lost production costs more than $5 million.

The Risk

300mm fab VFD DC capacitors explode without warning, taking down entire production lines and forcing tool resets.

Detection Gap

A single VFD failure costs hours of production — over $5M per hour.

02 The OctosX Solution

We supply Thermalpas BCT 1100-N sensors — PT100 Class A, flame-retardant, IP68, with a heat-rated cable. Each VFD panel gets a 6-channel controller that watches every capacitor temperature continuously and reports through the existing PLC into TSMC's common alarm system. No new dashboards for the fab team to learn.

Sensor & Edge

Thermalpas BCT 1100-N + PT100 Class A + UL 94HB flame-retardant + IP68 + 180°C+ rated cable.

Cloud Logic & Alerting

6-channel controller integrates via RS485 into VFD-panel PLC common alarm.

03 The Outcome

TSMC has used these sensors since 2018 — over 1,000 units cumulative, with individual units exceeding three years of service and zero failures. TSMC's purchase specification now names Thermalpas BCT 1100-N as a qualified supplier, which is about the strongest endorsement a semiconductor sensor can earn anywhere in the world.

Field Detection

Since 2018 deployment, over 1,000 units cumulative across the fab; individual units exceed 3 years lifetime with zero failures / zero RMA.

Quantified Impact

Direct evidence: TSMC's purchase specification names Thermalpas BCT 1100-N as a qualified supplier.

See it in your plant

Could this case be your plant?

Tell us about your facility — busbars, motors, panels, coal blowers, chillers, whatever your highest-risk thermal interface is — and we'll show you what an OctosX deployment would look like.

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