TDK: Wire Bondable NTC temperature sensor

The NTCWS series can be mounted by wire bonding, achieving small size, high accuracy and unquestionable reliability.

In recent years, optical transmission systems have been adopted at high rate because of the increase in capacity and speed of communication.

Among them, a semiconductor laser that is positioned as an important component requiring a temperature sensor to keep the ambient temperature constant. A thermocouple can be used as a temperature sensor, but the NTCWS series of NTC thermistor is more suited to this application.

Regarding the NTC Thermistor
The NTC (Negative Temperature Coefficient) thermistor is a semiconductor ceramic in which resistance decreases logarithmically with temperature rise.
It is widely used as a temperature sensor in every field where temperature detection is required, including automobiles, industrial equipment, home appliances, and medical devices. Please see the page linked below for more details.

> General technical information on NTC

Outline of the NTCWS-series Products
The NTCWS series are a type of NTC thermistor in which gold electrodes are terminated on the upper and lower surfaces of the ceramic.
These products are characterized by a high degree of freedom in installation location because they can be mounted by wire bonding.

In addition, they have a wide operating temperature range of ‐40°C to 125°C, exhibiting excellent performances at high-temperature



Outline of the NTCWS-series Products

Product Lineup
The NTCWS series have three developments of resistance value characteristics as described below. The resistance tolerance can be selected among ±1% and ±3%.
Please contact us separately if you are looking for other resistance value characteristics.



Product Lineup

Product Features
1. High accuracy
The NTCWS series have a lineup of narrow-tolerance products with a resistance tolerance of ±1%. The temperature accuracy at 25°C is ±0.3℃ for 1% tolerance and ±0.7℃ for 3% tolerance.



Temperature Accuracy by Resistance Tolerance

2. High reliability
The NTCWS series have achieved high reliability in any environment. For example, the Dry Heat Test is a rigorous test in which a product is left in an environment of 125°C for 2000 hours with the resistance value change rate of only +0.23% after 2000 hours.
In addition, the Thermal Shock Test test condition is left alternately at low temperature (-40℃) and high temperature (125℃) for 30 minutes each with the resistance value change rate of +0.19% after testing 2000 cycles.



Product Features

Example of Application
The NTCWS series are utilized for applications such as temperature detection near the laser diodes for optical transceivers in the optical communication sector, LiDAR in the automotive sector, and power semiconductors in the industrial equipment sector.
Apart from these, the series are ideal for applications where a temperature sensor needs to be wire bonded.



Examples of Applications

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