Honeywell 115-802EDJ-801 Temp Sensing Matched Bead Thermistor
The Honeywell 115-802EDJ-801 temp sensing thermistor is part of the Honeywell 115 Series, a family developed for high-sensitivity thermal applications. While many engineers search simply for an 8k NTC thermistor, the Honeywell 115-802EDJ-801 temperature sensor belongs to a more specialized category: matched bead thermistor assemblies designed for thermal conductivity and precision measurement tasks.
How the 115 Series Is Engineered
Honeywell explains that the 115 Series is built from 111 Series small bead thermistors that are hermetically sealed in glass and then mounted to a special header. This structure supports long life, repeatable performance, and easier installation. The Honeywell 115-802EDJ-801 temp sensing thermistor is particularly relevant where temperature changes, airflow changes, or gas property differences must be detected quickly.
Core Technical Specifications
The published 115 Series specifications show that the 8k class versions, including the Honeywell 115-802EDJ-801 temp sensing model, have a nominal resistance of 8000 ohms at 25°C with a tolerance of ±20%. Approximate resistance values are 22,800 ohms at 0°C and 3240 ohms at 50°C. The nominal beta value from 0°C to 50°C is 3442 K, and the temperature coefficient at 25°C is -3.9% per °C. Maximum ambient temperature is listed at 250°C, while maximum operating temperature including self-heating reaches 300°C.
Practical Use Cases
The Honeywell 115-802EDJ-801 temperature sensor is associated with gas analysis instruments, airflow detection, vacuum sensing equipment, industrial controls, medical electronics, and test equipment. One reason it remains relevant is the matched element structure, which can help support stable measurement relationships in circuits that evaluate thermal conductivity or closely related phenomena.
Why This Part Draws Technical Searches
Search intent around Honeywell thermistor, 8k thermistor, temperature sensing thermistor, and matched bead thermistor usually comes from engineers comparing response profiles and operating limits. The Honeywell 115-802EDJ-801 temp sensing thermistor answers that need with a well-defined specification set and a format suited to technical integration.
FAQ
What is the resistance of the Honeywell 115-802EDJ-801 at 25°C?
It is specified at 8000 ohms at 25°C with a tolerance of ±20%.
Is the Honeywell 115-802EDJ-801 designed for high-temperature environments?
Yes. The listed maximum ambient temperature is 250°C, and the maximum operating temperature including self-heating is 300°C.
What applications suit the Honeywell 115-802EDJ-801?
It is commonly associated with gas analysis, airflow detection, industrial controls, medical electronics, vacuum sensing, and test instrumentation.
What does matched bead construction mean here?
It means the sensing elements are matched to support more consistent performance between the paired thermistors, which is useful in certain measurement designs.
Why is glass sealing important in thermistors?
Glass sealing helps protect the sensing element and contributes to long life and reliable performance in demanding operating conditions.
For more information about Honeywell, you can review the broader portfolio of industrial sensing and switching products.