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HomeProductsSensors, TransducersTemperature Sensors - Thermostats - Mechanical67L120-0287
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67L120-0287 - Sensata-Airpax

Manufacturer Part Number
67L120-0287
Manufacturer
Airpax / Sensata Technologies
Allelco Part Number
98D-67L120-0287
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
42,645 pcs available, New & Original
Parts Description
THERMOSTAT 120DEG C NC TO220-2
Package
TO-220-2
Data sheet
67L120-0287.pdf
RoHs Status
RoHS Compliant
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Our certification
In stock: 42645
  • Unit Price: $7.588
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $7.588 $7.59
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

67L120-0287 Tech Specifications
Sensata-Airpax - 67L120-0287 technical specifications, attributes, parameters and parts with similar specifications to Sensata-Airpax - 67L120-0287

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 67L120-0287 thermostat’s switching temperature and reset temperature compare to typical thermal protection requirements in industrial motor drives, and what margin of safety should be considered when selecting this component?
The 67L120-0287 switches at 248°F (120°C) with a reset at 185°F (85°C), providing a 63°F hysteresis window. In industrial motor drives, where winding insulation classes often dictate maximum allowable temperatures, this hysteresis supports reliable re-armment after cooling. However, designers should ensure the ambient operating range plus expected heat rise stays well below 120°C to avoid nuisance tripping or failure to activate. A common practice is to derate by 10–15°C for long-term reliability, implying a practical upper limit closer to 105°C for sustained operation.
What are the implications of the ±9°F (±5°C) tolerance on the 67L120-0287’s switching point for safety-critical applications such as battery management systems?
The tolerance means the actual trip point could vary between 239°F and 257°F (115°C to 125°C). For safety-certified systems requiring precise over-temperature thresholds—such as Li-ion battery packs—this variation introduces uncertainty. If the system must not exceed 115°C under fault conditions, the nominal 120°C setpoint may not provide adequate protection. In such cases, additional temperature monitoring or redundancy may be required unless the application can tolerate the worst-case deviation without risk.
Can the 67L120-0287 be used in high-vibration environments typical of automotive HVAC systems, and how does its mechanical construction support robustness?
The TO-220-2 package with through-hole PC pins provides good mechanical anchoring on a printed circuit board, which helps resist vibration-induced fatigue. However, TO-220 packages are not inherently designed for extreme shock or vibration; they rely on solder joint integrity and board support. In automotive HVAC applications, conformal coating and strain relief techniques are recommended. While the component itself meets standard industrial ratings, mounting strategy becomes critical for long-term durability.
How does the 67L120-0287’s current rating of 0.5A DC at 48V affect its suitability for switching power supplies compared to solid-state alternatives?
At 48V and 0.5A, the 67L120-0287 dissipates approximately 24W during conduction if fully on, though in practice duty cycle is low for protection functions. This makes it unsuitable for high-power switching but acceptable for control logic or auxiliary circuits. Solid-state relays or MOSFET-based thermal cutoff devices offer lower loss and faster response but lack inherent fail-safe behavior. The mechanical bimetallic design of the 67L120-0287 provides passive, self-resetting protection without external power, making it preferable where reliability under fault conditions outweighs efficiency concerns.
What design considerations arise from the 67L120-0287’s SPST-NC configuration when integrating it into a fan control loop for server racks?
As Normally Closed, the 67L120-0287 completes the control path under normal conditions. When triggered, it opens, signaling the fan controller to increase airflow or shut down non-critical loads. This requires the fan driver or microcontroller input to interpret an open signal as a fault condition. Designers must ensure pull-up resistors and signal conditioning are implemented to prevent floating inputs during switching transients. Additionally, the 20K switching cycles imply mechanical wear over time, so mission duration estimates should factor in cycle count against expected thermal events.
How does the 67L120-0287’s RoHS compliance and MSL 1 status influence procurement and assembly processes in regulated manufacturing environments?
RoHS compliance ensures halogen-free materials and restricted substances, aligning with global environmental regulations. MSL 1 indicates unlimited shelf life and no special storage requirements, simplifying inventory management. During assembly, standard reflow profiles apply, but since it's a through-hole device, wave soldering is typically used rather than reflow. This avoids potential thermal stress from repeated heating cycles, preserving the bimetallic switch integrity.
In what scenarios would the 67L120-0287 outperform digital temperature sensors like thermistors or IC-based solutions in embedded cooling systems?
The 67L120-0287 offers true physical disconnection upon overtemperature, providing galvanic isolation and immunity to software glitches or power failures—critical in safety interlocks. Unlike resistive sensors that merely report temperature, this thermostat directly controls load states. In applications where fail-safe operation is mandatory—such as overheating pumps or heaters—the mechanical action of the 67L120-0287 provides inherent redundancy without firmware dependency, reducing single points of failure.
What are the limitations of using the 67L120-0287 for precise thermal regulation in lab equipment requiring sub-degree accuracy?
The ±5°C tolerance and fixed switching behavior make the 67L120-0287 unsuitable for applications demanding fine thermal control. It cannot modulate power based on real-time feedback; it either conducts or breaks. For lab instruments needing tight temperature bands around 120°C, alternative solutions like PTC heaters with analog controllers or digital PID systems with calibrated sensors are more appropriate. The 67L120-0287 excels in protection roles, not regulation.

Parts with Similar Specifications

The three parts on the right have similar specifications to Sensata-Airpax 67L120-0287

Product Attribute 67L120-0257 67L125-0258 67L120-0378 67L125-0288
Part Number 67L120-0257 67L125-0258 67L120-0378 67L125-0288
Manufacturer Sensata-Airpax Sensata-Airpax Sensata-Airpax Sensata-Airpax
Tolerance - - - -
Switching Cycles - - - -
Circuit - - - -
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Current Rating - DC - - - -
Termination Style - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Reset Temperature - - - -
Current Rating - AC - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Switching Temperature - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

67L120-0287 Datasheet PDF

Download 67L120-0287 pdf datasheets and Sensata-Airpax documentation for 67L120-0287 - Sensata-Airpax.

Datasheets
6700 Series Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • 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.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
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.
Contact us if you have any questions.
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QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

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  • ISO 9001: 2015
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67L120-0287 Image

67L120-0287

Sensata-Airpax
98D-67L120-0287

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

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