AI, cloud services, and 5G are pushing data centers to scale faster than ever. At the heart of this transformation are optical transceivers—critical modules that convert electrical signals to optical signals and back, enabling ultra-fast, high-capacity data transmission. These components power connections between servers and switches, accelerating performance and expanding network capacity.
As demand grows, so do expectations: higher reliability, smaller footprints, and support for extreme speeds. Meeting these challenges requires precise thermal management—making temperature-sensing solutions like TDK’s bondable NTC thermistors essential for next-generation designs.

High-speed optical networks face a critical challenge: heat. Inside optical transceivers, components like laser diodes and driver ICs generate significant heat, which can shift laser wavelengths and degrade communication quality—especially over long distances.
TDK’s bondable NTC thermistors deliver real-time, high-precision temperature sensing near the laser diode, enabling proactive temperature control and abnormality detection. The result? Stable laser wavelengths, longer device lifetimes, and superior product reliability.
For demanding environments, TDK’s gold-electrode NTC thermistors provide exceptional durability and reliability, making them indispensable for next-generation optical transceiver designs.

TDK's NTCWS series thermistors are engineered for seemless integration into optical transceivers, delivering unmatched stability and performance. Here's why leading manafacturers choose TDK:

🔧 Simplified Assembly: Wire-bonding compatible, supporting multiple mounting methods (Au Wire, AuSn solder)
✅ Proven Quality at Scale: Competitive pricing backed by mass-production expertise from the automotive sector.
🛡️ Built for Harsh Conditions: Exceptional durability—passes sulfurization tests (H₂S 5 ppm, 40±2°C, 75±3% RH, 240 hr).
🎯 Precision You Can Trust: ±1% resistance tolerance for high-accuracy temperature sensing.

With decades of experience supplying the automotive market, TDK thermistors deliver stable quality and exhibit less resistance drift than competitors—ensuring long-term reliability for next-generation optical networks.

  Comparison vs. Competitor     

The TDK NTCWS series offers a variety of resistance values and B-constants, such as 10 kΩ and 100 kΩ, enabling optimal selection according to application and mounting conditions. Representative model examples are shown below.

We also have samples of the smaller‑sized 0.25x0.25 mm product available. For more details, please download the document at the bottom of the page.