Honeywell 135-105QAF-J02 Temperature Sensor Guide
The Honeywell 135-105QAF-J02 temperature sensor is an NTC thermistor intended for dependable temperature measurement in electronic and industrial systems. It belongs to Honeywell’s 135 Series, a family recognized for glass-encapsulated axial thermistors that combine compact design with broad temperature capability and dependable mechanical construction.
Core Characteristics of the Honeywell 135-105QAF-J02
The Honeywell 135-105QAF-J02 thermistor is specified as a 1 MOhm device at 25°C with a ±5% resistance tolerance. It is supplied in a DO-204AH / DO-35 axial package and supports through-hole mounting. For design teams working on thermal monitoring or compensation circuits, that combination can be useful when stable high-resistance sensing behavior is required in a small-format component.
Like the wider 135 Series, the Honeywell 135-105QAF-J02 temperature sensor benefits from a hermetically sealed glass-encapsulated build and a wide operating temperature range. That makes the device relevant for applications where environmental resilience, long-term repeatability, and straightforward assembly all matter in parallel.
Application Areas
The Honeywell 135-105QAF-J02 NTC thermistor may be considered for control electronics, process instrumentation, environmental monitoring devices, appliance boards, industrial thermal protection systems, and embedded sensor circuits. In many of these environments, a 1 MOhm thermistor helps support specific divider configurations, measurement strategies, or compensation models based on the design target.
It is also useful in cases where engineers are standardizing around Honeywell temperature sensing platforms and want a component family known for rugged axial construction and practical integration into traditional PCB layouts.
Why This Honeywell Temperature Sensor Matters
The Honeywell 135-105QAF-J02 temperature sensor is relevant because thermal measurement is rarely just about reading temperature. In real-world systems, temperature data often influences control thresholds, safety margins, reliability behavior, and calibration logic. Choosing a stable NTC thermistor can therefore support not just sensing performance, but overall product consistency and maintenance confidence as well.
For additional product family context, more information about Honeywell is useful when evaluating related sensor options.
FAQ
What is the Honeywell 135-105QAF-J02?
It is an NTC thermistor temperature sensor used in electronic systems for thermal measurement and temperature-dependent resistance control.
What is the nominal resistance of the Honeywell 135-105QAF-J02?
The nominal resistance is 1 MOhm at 25°C, which places it in a useful range for high-resistance sensing applications.
What kind of mounting style does this part use?
It uses through-hole mounting in an axial DO-35 style package, making it suitable for many conventional PCB assembly workflows.
Is the Honeywell 135-105QAF-J02 suitable for industrial use?
It can be a strong option for industrial and instrumentation-related designs that require durable construction and repeatable thermal sensing performance.
Why do engineers choose NTC thermistors for temperature sensing?
NTC thermistors offer predictable resistance change with temperature, enabling efficient thermal feedback, compensation, and monitoring in analog and mixed-signal circuits.
What should be reviewed before specifying this sensor?
Key checks include nominal resistance, tolerance, package style, mounting approach, operating range, signal-conditioning compatibility, and system calibration requirements.