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HomeProductsSensors, TransducersTemperature Sensors - Thermostats - Mechanical67L120-0350
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67L120-0350 - Sensata-Airpax

Manufacturer Part Number
67L120-0350
Manufacturer
Airpax / Sensata Technologies
Allelco Part Number
98D-67L120-0350
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
30,538 pcs available, New & Original
Parts Description
THERMOSTAT 120DEG C NC TO220-2
Package
TO-220-2
Data sheet
67L120-0350.pdf
RoHs Status
RoHS Compliant
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Our certification
In stock: 30538
  • Unit Price: $13.81
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $13.81 $13.81
200+ $5.51 $1,102.00
500+ $5.33 $2,665.00
1000+ $5.23 $5,230.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

67L120-0350 Tech Specifications
Sensata-Airpax - 67L120-0350 technical specifications, attributes, parameters and parts with similar specifications to Sensata-Airpax - 67L120-0350

Product Attribute Attribute Value
Manufacturer Airpax / Sensata Technologies
Tolerance ±9°F (±5°C)
Termination Style PC Pins
Switching Temperature 248°F (120°C)
Switching Cycles 20K
Series 6700
Reset Temperature 185°F (85°C)
Product Attribute Attribute Value
Package / Case TO-220-2
Package Tube
Mounting Type Through Hole
Current Rating - DC 0.5A (48V)
Current Rating - AC -
Circuit SPST-NC
Base Product Number 67L120

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8536.50.9065

Frequently Asked Questions(FAQ)

How does the Sensata-Airpax 67L120-0350 thermostat perform in high-temperature industrial environments, and what are its key electrical specifications for reliable switching?
The Sensata-Airpax 67L120-0350 is designed for robust operation in demanding thermal conditions, with a switching temperature of 120°C (248°F) and a reset temperature of 85°C (185°F), providing a hysteresis of approximately 35°C to prevent rapid cycling. It features an SPST-NC (normally closed) configuration and can handle up to 0.5A at 48V DC, making it suitable for moderate power control applications in industrial settings. The ±5°C tolerance ensures predictable actuation within tight thermal windows, while the TO-220-2 package offers secure mechanical attachment and effective heat dissipation through PC pins. With 20,000 switching cycles rated, it supports long-term reliability in repetitive duty cycles.
What is the difference between the 67L120-0350 and other models in the 6700 series, particularly in terms of thermal response and application suitability?
Compared to other members of the 6700 series, the 67L120-0350 is specifically calibrated to switch at 120°C, distinguishing it from lower-temperature variants such as the 67L85 or higher ones like the 67L150. This makes it ideal for applications requiring precise thermal cutoff at elevated temperatures, such as motor overheating protection or transformer monitoring. While all models share the same TO-220-2 packaging and SPST-NC logic, differences in switching thresholds affect system design—lower models may be used for cooling fan control, whereas the 67L120-0350 is better suited for failure-mode safety in high-heat scenarios. The 0.5A/48V DC rating is consistent across the series, ensuring interchangeability where current demands align.
Can the 67L120-0350 be used for safety-critical overheat protection in consumer electronics, and what design considerations should engineers evaluate?
While the 67L120-0350 meets basic thermal protection requirements, its use in safety-critical consumer applications requires careful evaluation due to the ±5°C tolerance and lack of formal certifications beyond RoHS compliance. Engineers must account for ambient temperature drift, self-heating effects, and PCB layout impacts on thermal sensing accuracy. Given its NC (normally closed) contact, it interrupts current flow when triggered—this behavior aligns well with fail-safe designs but demands proper relay or transistor interfacing for loads above 500mA. In non-certified environments such as industrial instrumentation or HVAC systems, it provides adequate protection; however, medical or automotive safety functions should incorporate redundant thermal monitoring or certified components.
How does the reset characteristic of the 67L120-0350 influence system recovery after a thermal event, and what implications does this have for automatic restart functionality?
The 67L120-0350 exhibits a reset temperature of 85°C, which is significantly lower than its 120°C switching point, creating a built-in hysteresis window of ~35°C. This means the device will only return to its normally closed state once the sensed temperature drops below 85°C, regardless of how quickly ambient cooling occurs. For systems requiring automatic restart after cooling, this delay can be beneficial by preventing nuisance tripping during brief thermal transients. However, if continuous operation is needed post-event, manual intervention may be required unless external circuitry monitors temperature and re-energizes the load independently. This behavior makes it less suitable for applications needing immediate re-engagement but highly effective in preventing oscillation around the trip threshold.
In what ways does the TO-220-2 package of the 67L120-0350 impact thermal performance and mechanical integration compared to surface-mount alternatives?
The TO-220-2 package of the 67L120-0350 facilitates direct mounting to heat sinks via through-hole PC pins, enhancing thermal conductivity from the sensor element to the environment—critical for maintaining accurate junction temperature measurement. This design reduces thermal resistance compared to SMD equivalents, minimizing self-heating errors. However, the larger footprint and leaded construction limit placement density on compact PCBs. Engineers often pair this component with thermal interface materials or strategic airflow paths to optimize response time. While not ideal for space-constrained designs, the mechanical robustness and ease of soldering make it preferable in power electronics and test equipment where durability outweighs size concerns.
What are the limitations of using the 67L120-0350 in AC-powered systems, and how should circuit designers adapt their approach accordingly?
The 67L120-0350 is specified for DC loads up to 0.5A at 48V, with no AC current rating provided. Applying it to AC circuits risks arcing, contact degradation, or premature failure due to zero-crossing interruptions and higher inrush currents. To safely integrate the device into AC systems, designers typically use it to control a relay or solid-state switch rated for the full AC load. The thermostat then operates the coil of the relay, isolating the sensitive contacts from high-voltage waveforms. This indirect switching preserves the 67L120-0350’s lifespan and ensures reliable operation without exceeding its unidirectional current handling capability.
How does the moisture sensitivity level (MSL) classification of the 67L120-0350 affect assembly processes, and what precautions are necessary during reflow or wave soldering?
Classified as MSL 1, the 67L120-0350 has unlimited shelf life under standard storage conditions and does not require baking prior to assembly. This simplifies inventory management and reduces handling steps in high-volume manufacturing. During PCB assembly, whether using reflow or wave soldering, normal process controls apply—no special humidity conditioning is needed. Nevertheless, engineers should still adhere to recommended thermal profiles to avoid damage to internal bond wires or semiconductor junctions. Since it uses through-hole leads, wave soldering is feasible with proper fixturing, but automated pick-and-place systems may favor SMD versions for higher throughput.

Parts with Similar Specifications

The three parts on the right have similar specifications to Sensata-Airpax 67L120-0350

Product Attribute 67L125-0351 67L120-0378 67L120-0257 67L120-0144
Part Number 67L125-0351 67L120-0378 67L120-0257 67L120-0144
Manufacturer Sensata-Airpax Sensata-Airpax Sensata-Airpax Sensata-Airpax
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current Rating - DC - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current Rating - AC - - - -
Circuit - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Reset Temperature - - - -
Tolerance - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Switching Temperature - - - -
Switching Cycles - - - -
Termination Style - - - -

67L120-0350 Datasheet PDF

Download 67L120-0350 pdf datasheets and Sensata-Airpax documentation for 67L120-0350 - Sensata-Airpax.

Datasheets
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

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Region Country Logistic Time(Day)
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Brazil 7
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United Kingdom 4
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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Electrostatic Discharge Protection and Handling

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67L120-0350 Image

67L120-0350

Sensata-Airpax
98D-67L120-0350

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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