Honeywell 121-104KAF-Q01 Temperature Sensor Overview
The Honeywell 121-104KAF-Q01 temperature sensor is a glass probe NTC thermistor designed for applications that require a higher nominal resistance value and stable thermal response. As part of the Honeywell 121 Series, it is built for technical environments where accurate temperature detection, compact packaging, and durable probe construction are all relevant. Searches for the Honeywell 121-104KAF-Q01 temperature sensor often come from engineers evaluating 100 kOhm thermistor options for industrial monitoring, instrumentation, and control platforms.
Technical Profile of Honeywell 121-104KAF-Q01
This Honeywell 121-104KAF-Q01 thermistor probe has a nominal resistance of 100 kOhm at 25°C and uses NTC technology, which means resistance decreases as temperature increases. The part is supplied as a cylindrical glass probe with free-hanging mounting and lead wires measuring approximately 50.8 mm. It is also intended for a wide operating temperature range, which supports flexible integration into systems working under cold or elevated thermal conditions.
The Honeywell 121-104KAF-Q01 temperature sensor is especially relevant when a design is based around high-resistance thermistor behavior. In those cases, the 100 kOhm profile can help shape measurement sensitivity, interface choices, and analog front-end behavior in a way that differs from lower-resistance sensor options.
Typical Applications of Honeywell 121-104KAF-Q01 Temperature Sensor
This Honeywell temperature sensor can be considered for industrial controllers, precision thermal monitoring, environmental sensing assemblies, compensation circuits, and embedded hardware where a compact thermistor probe is preferred. Because it belongs to an established Honeywell family, it is also useful in legacy system support and technical replacement analysis.
The probe-style structure supports practical use in assemblies where the sensing element needs to be positioned reliably without relying on a bare component format. That makes the Honeywell 121-104KAF-Q01 NTC thermistor relevant in both original equipment design and service-oriented applications.
Why Search Interest Exists Around This Part
Technical users often search for Honeywell 121-104KAF-Q01 temperature sensor, Honeywell 121-104KAF-Q01 NTC thermistor, and Honeywell 121-104KAF-Q01 thermistor probe because they need verified product information, not generic summaries. Common goals include thermal curve comparison, nominal resistance matching, design review, and replacement identification.
For more information about Honeywell, it can be helpful to compare this part with other 121 Series configurations that use different resistance values or tolerance targets.
FAQ
What is the 121-104KAF-Q01 temperature sensor?
The Honeywell 121-104KAF-Q01 is a 100 kOhm NTC thermistor in a cylindrical glass probe format. It is used for resistance-based temperature sensing in technical and industrial systems.
Why would a design use a 100 kOhm thermistor like 121-104KAF-Q01?
A 100 kOhm thermistor can be beneficial in measurement circuits that are designed around high nominal resistance values. It may influence sensitivity, voltage divider behavior, and signal conditioning choices depending on system architecture.
Is the 121-104KAF-Q01 suitable for high-temperature measurement?
Yes. This Honeywell temperature sensor is specified for a broad operating range, making it useful in applications where elevated temperatures are part of normal operation.
Is the Honeywell 121-104KAF-Q01 only for industrial use?
No. While it is often relevant for industrial and instrumentation projects, it can also be suitable for other technical platforms that need a robust probe-style NTC thermistor with a documented resistance profile.
What should be checked before using the 121-104KAF-Q01 as a replacement?
Users should verify nominal resistance, physical probe style, lead length, thermal response expectations, and the broader circuit design. A matching part number family does not always guarantee identical system behavior unless the electrical and mechanical requirements are fully aligned.