Honeywell 135-504QAG-J01 Temperature Sensor Explained
The Honeywell 135-504QAG-J01 temperature sensor is a 500 kOhm NTC thermistor built for applications that require sensitive temperature-dependent resistance behavior in a compact, durable package. As a member of the Honeywell 135 Series, it uses hermetically sealed glass construction and an axial DO-35 body that supports dependable performance in industrial and electronic assemblies.
What Makes the Honeywell 135-504QAG-J01 Different?
The main distinction of the Honeywell 135-504QAG-J01 thermistor is its higher nominal resistance value. At 25°C, this model is rated at 500 kOhm, which can be useful in circuits where designers need a different resistance curve behavior than lower-value thermistors. In search and technical documentation, it is commonly described as a Honeywell 135-504QAG-J01 temperature sensor or Honeywell 135-504QAG-J01 NTC thermistor.
Technical Highlights
This component is intended for through-hole mounting and uses an axial lead structure that simplifies integration into many control boards and sensor interfaces. The glass-encapsulated element helps protect the thermistor from contaminants and mechanical stress. That matters in long-life systems where repeatable thermal response is more important than short-term convenience.
Application Use Cases
The Honeywell 135-504QAG-J01 temperature sensor can be found in industrial controls, monitoring electronics, precision instrumentation, compensation networks, and specialized thermal measurement circuits. It is especially relevant where circuit designers need a high-resistance Honeywell thermistor with a stable package style and dependable thermal characteristics.
Why Engineers Still Use Axial Thermistors
Axial thermistors remain useful because they are easy to install, easy to service, and suitable for both legacy and modern mixed-assembly designs. When a robust component with predictable NTC behavior is required, a Honeywell glass-encapsulated thermistor can still be an excellent fit.
For more information about Honeywell, you can review additional sensing components and application-focused product options.
FAQ
What type of component is the Honeywell 135-504QAG-J01?
It is an NTC thermistor, meaning its resistance decreases as temperature increases. This makes it suitable for temperature sensing and thermal compensation applications.
What is the resistance value of the Honeywell 135-504QAG-J01 temperature sensor?
This model has a nominal resistance of 500 kOhm at 25°C, which makes it different from lower-resistance thermistors in the same series.
Where is the Honeywell 135-504QAG-J01 commonly used?
It is used in industrial electronics, instrumentation, temperature monitoring circuits, and control applications where a compact, high-resistance thermistor is required.
Why is the package style important?
The DO-35 axial package supports through-hole installation and practical handling in production, maintenance, and replacement workflows.
Is the 135-504QAG-J01 suitable for harsh environments?
Its glass-encapsulated structure improves resistance to environmental stress, making it a reliable option for applications where moisture, contamination, or long service life are concerns.