Honeywell 112-503JAJ-B01 Temp Sensing Guide

The Honeywell 112-503JAJ-B01 temp sensing thermistor is a discrete NTC sensor built for stable thermal measurement in compact and technically demanding designs. As a Honeywell 112-503JAJ-B01 temperature sensor, it belongs to the Honeywell 112 Series and is commonly selected for applications where resistance accuracy, environmental robustness, and repeatable temperature response are all important.

Technical Profile of the Honeywell 112-503JAJ-B01 Temp Sensing Thermistor

This model is widely associated with a nominal resistance of 50 kOhm at 25°C, ±20% resistance tolerance, and a B-constant near 4061K. It also uses a large glass bead construction with adjacent leads, which improves durability and long-term consistency in comparison with less protected thermistor formats. The Honeywell 112-503JAJ-B01 temp sensing element is therefore a practical choice for design teams that want dependable thermal sensing in a very compact package.

Its NTC operating principle means resistance decreases as temperature rises. That electrical behavior supports a broad range of system functions, including temperature monitoring, compensation networks, calibration circuits, and control feedback. In many applications, the sensor is valuable not only because it measures temperature effectively, but because it can do so with good stability across repeated thermal cycles.

Best-Fit Applications

The Honeywell 112-503JAJ-B01 temperature sensing component is suitable for instrumentation, industrial electronics, embedded control boards, medical-adjacent devices, and engineered thermal assemblies. Since the package is compact and discrete, it can be mounted close to the point of interest, which often results in more useful and immediate temperature data.

Its glass-sealed design also helps support applications where contamination resistance and long-term reliability matter. That makes it relevant in systems expected to operate for extended periods with minimal drift. For engineers focused on stable thermal behavior rather than headline features, the Honeywell 112-503JAJ-B01 temp sensing thermistor offers a practical and proven sensing route.

FAQ

What is the nominal resistance of the Honeywell 112-503JAJ-B01?

This thermistor is typically listed at 50 kOhm at 25°C, making it suitable for a wide range of temperature sensing and compensation designs.

What is the benefit of a glass bead thermistor?

Glass bead sealing helps protect the sensing element from moisture and contamination while supporting long-term stability and repeatable thermal performance.

Is the Honeywell 112-503JAJ-B01 meant for board-level integration?

Yes. It is a discrete thermistor with a compact format that works well in custom electronic assemblies where sensor placement matters.

What industries can use this Honeywell temp sensing part?

Industrial electronics, instrumentation, thermal management, and specialized equipment design are all areas where this model can be relevant.

For more information about Honeywell, reviewing 112 Series variants side by side can make resistance and response comparisons easier during specification work.