Honeywell 140-501FAG-A01 Temperature Sensor Thermistor Overview
The Honeywell 140-501FAG-A01 temperature sensor thermistor is a leaded NTC disc thermistor developed for temperature-sensitive applications where dependable resistance change is required. As part of Honeywell’s 140 Series, this component supports designs that rely on predictable thermal behavior for monitoring, compensation, and control.
Understanding the Honeywell 140-501FAG-A01
The Honeywell 140-501FAG-A01 temperature sensor belongs to a thermistor family known for flexible integration into electronic and electromechanical systems. In simple terms, it is used where a circuit must respond intelligently to heat changes. Since it is an NTC device, the resistance decreases as temperature increases, allowing designers to translate thermal changes into usable electrical signals.
That makes the Honeywell 140-501FAG-A01 thermistor relevant for equipment that needs steady temperature awareness rather than complex digital sensing architecture. In many cases, that includes HVAC controls, thermal management assemblies, industrial devices, and instrument panels.
Key Technical Details
This Honeywell temperature sensor thermistor is commonly listed with a nominal resistance of 500 Ohm at 25°C and a resistance tolerance of ±10.0%. It is also associated with a 25/85 Beta value of 3468, which gives engineers a useful reference point for thermal response behavior in circuit design.
From a design perspective, those details matter because they influence how the thermistor interacts with voltage dividers, analog input stages, compensation networks, and thermal protection routines. A stable and known thermal curve helps reduce guesswork during validation and maintenance.
Why This Product Code Matters
When specifying a component, using the full term Honeywell 140-501FAG-A01 temperature sensor thermistor is important. A thermistor family can include multiple resistance values and physical variants, and those differences affect performance. Referring only to the series is not always enough for procurement, documentation, or replacement work.
That is especially true in older or service-based systems where exact matching is often necessary to preserve the original thermal response. For technicians, product-level precision saves time. For engineers, it protects circuit behavior.
For more information about Honeywell, reviewing product-family context can be useful when comparing sensor options across industrial and HVAC-related applications.
FAQ
What is the Honeywell 140-501FAG-A01 used for?
It is used for temperature sensing, thermal compensation, and temperature-aware control functions in electronic systems. It is especially useful where a passive thermal sensing element is preferred.
What does 500 Ohm at 25°C mean?
It means the thermistor has a nominal resistance of 500 Ohm when measured at 25 degrees Celsius. This reference value is essential for circuit design and replacement matching.
Why is Beta value important in a thermistor?
The Beta value helps describe how resistance changes with temperature. It gives designers a practical way to estimate thermal response and select the right part for an application.
Can the Honeywell 140-501FAG-A01 be used in industrial equipment?
Yes, it can support industrial thermal sensing applications, provided the electrical and environmental requirements of the system align with the part’s characteristics.
Is this product useful for replacement and maintenance work?
Yes. In maintenance environments, exact part identification is valuable because even small changes in thermistor value or curve can alter system behavior.