NTC thermistor NTCWS

Product overview

• Available with Au wire bonding for mounting inside laser-diode packages
• Narrow tolerances: ±1% on resistance and B value for selected variants, enabling high-accuracy temperature sensing
• Designed for temperature measurement of laser diodes in optical communication transceivers and LiDAR systems

Summary
TDK introduces the NTCWS series of NTC thermistors available with Au wire bonding. These bondable NTC thermistors provide tight resistance and B-value tolerances to support precise wavelength and temperature control of laser diodes. The compact, lead-free components operate over a -40 to 125 °C range. Mass production of the series began in September 2023.

Features & Applications
Main applications

• Temperature sensing of laser diodes for optical communication transceivers and LiDAR

Main features and benefits

• Au thick-film electrode and compatibility with Au wire bonding for in-package mounting
• Selected parts offer ±1% tolerance on resistance and B value for accurate temperature control
• Compact, lead-free design suitable for space-constrained laser-diode packages

Key data

• Types: NTCWS3UF103FC1GT, NTCWS3UF103HC1GT
• Dimensions (L × W): 0.33 ± 0.04 mm; Thickness (T): max. 0.25 mm
• Resistance R25: 10.0 kΩ ±1% (NTCWS3UF103FC1GT); 10.0 kΩ ±3% (NTCWS3UF103HC1GT)
• B value (B25/85): 3930 K ±1%
• Electrode: Au thick film

Technical specifications

• Series: NTCWS
• Operating temperature range: -40 to 125 °C
• Mounting: Au wire bonding compatible; suitable for mounting inside LD packages
• Design: Compact, lead-free
• Mass production start: September 2023