Honeywell 135-103LAF-JK1 Temperature Sensor Guide
The Honeywell 135-103LAF-JK1 temperature sensor is an NTC thermistor from the Honeywell 135 Series developed for dependable board-level temperature sensing. It combines a 10 kOhm nominal resistance, through-hole axial construction, and wide operating temperature capability, making it a useful option for engineers who prioritize stability and straightforward installation.
Honeywell 135-103LAF-JK1 at a Glance
The Honeywell 135-103LAF-JK1 NTC thermistor is supplied in a DO-35 / DO-204AH axial package and uses through-hole mounting. This version is associated with tape-and-reel packaging, which can be useful in manufacturing environments where organized component handling and assembly efficiency matter. It is still fundamentally a discrete temperature sensing component designed for circuit integration rather than a finished probe.
Technical Overview
This Honeywell 135-103LAF-JK1 temperature sensor provides 10 kOhm resistance at 25°C, ±5% resistance tolerance, and an operating temperature range from -60°C to 300°C. The part belongs to the Honeywell 135 Series and is intended for applications that need a rugged, compact NTC thermistor with familiar electrical behavior and practical mechanical design.
For engineers working with industrial control electronics, thermal monitoring boards, and compensation networks, the Honeywell 135-103LAF-JK1 thermistor offers a proven format that is easy to incorporate into established designs. The axial lead structure also helps in layouts where serviceability and assembly robustness remain priorities.
Application Relevance
This Honeywell temperature sensor can support HVAC controls, industrial monitoring equipment, power electronics, instrumentation, and thermal management circuits. In many cases, designers select axial thermistors because they are simple to implement, respond predictably, and fit well in legacy as well as modern mixed-technology assemblies.
Another reason this part attracts attention is practical sourcing alignment. A tape-and-reel configuration can be meaningful for volume assembly workflows while still preserving the same core sensing behavior expected from the Honeywell 135 family.
For more information about Honeywell components and sensing solutions, reviewing adjacent product options can help when matching packaging and tolerance requirements.
Frequently Asked Questions
What is the difference between Honeywell 135-103LAF-JK1 and other similar Honeywell thermistors?
The main differences often come down to tolerance and packaging format. The Honeywell 135-103LAF-JK1 is a 10 kOhm NTC thermistor with ±5% tolerance and tape-and-reel packaging, which may matter in production planning.
Is the Honeywell 135-103LAF-JK1 a temperature sensor or a resistor?
It is a temperature sensor in the form of an NTC thermistor. Although it is resistive by nature, its resistance is intentionally temperature-dependent, which allows it to function as a sensing component.
Can this part be used in automation and control systems?
Yes. It is well suited to automation, HVAC, industrial controls, instrumentation, and electronic assemblies where accurate thermal feedback is required at board level.
Why do engineers still use through-hole thermistors?
Through-hole thermistors remain popular because they are mechanically secure, easy to integrate, and often preferred in designs where durability, repairability, and conventional assembly methods are important.
Does the Honeywell 135-103LAF-JK1 support high-temperature operation?
Yes. Its specified operating range extends up to 300°C, which gives it a broader application window than many standard low-temperature sensing components.