Honeywell 135-203LAG-J01 Temperature Sensor: What to Know About This 20 kOhm NTC Thermistor
The Honeywell 135-203LAG-J01 temperature sensor is a discrete temperature sensing component built for designers who need a robust and predictable NTC thermistor in a compact axial package. As a Honeywell 135-203LAG-J01 thermistor, this model is often relevant for industrial electronics, instrumentation, thermal management boards, and equipment that requires dependable analog temperature feedback.
Understanding the Honeywell 135-203LAG-J01 Product Type
The Honeywell 135-203LAG-J01 product type is an NTC thermistor from Honeywell’s 135 Series. This series is known for hermetically sealed glass encapsulation, which supports long-term durability and consistent performance in demanding operating conditions. The axial lead format also makes the part easy to integrate into through-hole designs where conventional assembly remains preferred.
Core Technical Profile
The Honeywell 135-203LAG-J01 NTC thermistor offers a nominal resistance of 20 kOhm at 25°C with a listed tolerance of 10%. It uses a DO-35 / DO-204AH style axial package and fits through-hole mounting requirements. Like the broader 135 Series, it is intended for wide-temperature operation and applications that benefit from stable thermistor behavior over time.
In practical use, the Honeywell 135-203LAG-J01 temperature sensor responds to rising temperature by lowering its resistance. This simple but effective electrical behavior makes it useful for thermal measurement, protection circuits, feedback loops, and compensation functions across a wide range of equipment categories.
Application Areas
The Honeywell 135-203LAG-J01 thermistor sensor can be considered for HVAC electronics, industrial controllers, process instrumentation, lab equipment, consumer appliance boards, and power-management circuits. Designers often choose this kind of thermistor where board space is limited but durability and repeatable sensing still matter.
Another strength of the Honeywell 135-203LAG-J01 temperature sensing thermistor is its mechanical construction. Glass encapsulation adds environmental protection, while the tinned copper-clad steel leads support secure soldering and dependable electrical connection. That combination is especially useful in systems expected to operate for long periods with minimal maintenance.
Why This Model Remains Relevant
Many engineers continue to look for the Honeywell 135-203LAG-J01 temperature sensor because it fits an important design space between simple low-cost temperature sensing and more complex digital sensor architectures. For many thermal management tasks, a reliable analog thermistor remains the more practical and serviceable choice.
For more information about Honeywell, it helps to review how Honeywell’s thermistor portfolio supports both standard industrial electronics and custom thermal sensing requirements.
FAQ
What kind of component is the Honeywell 135-203LAG-J01?
The Honeywell 135-203LAG-J01 is an NTC thermistor used for temperature sensing and thermal compensation. It is not a digital sensor module or a finished probe, but a component-level device intended for system integration.
What does 20 kOhm at 25°C mean?
It means the thermistor’s nominal resistance is 20,000 ohms when measured at 25°C. This standard reference point allows engineers to calculate how the device will behave as temperature changes in the target application.
Why would someone choose the Honeywell 135-203LAG-J01 over another sensor type?
This part is attractive when designers want a compact, rugged, analog sensing component with stable behavior and easy through-hole integration. In many applications, that makes it simpler to use than more complex digital temperature devices.
Is the Honeywell 135-203LAG-J01 suitable for harsh environments?
Its glass-encapsulated structure and broad 135 Series operating profile make it well suited to demanding environments compared with less protected sensor constructions. This is one of the reasons Honeywell 135 Series thermistors are often used in industrial designs.
Can the Honeywell 135-203LAG-J01 support long-life equipment?
Yes. The component is built for durability and stable operation, which is important in equipment expected to run for extended periods. Designers often value this kind of thermistor for reliability-focused electronic systems.