This Product Selection Guide contains information to help select products in the Thermostats - Mechanical category on DigiKey.com
Mechanical Thermostats are designed to keep components safe in situations where there is an excessive amount of temperature. Components in this family will open or close a circuit that they are installed in when the Switching temperature (Adjustable, 14°F to 500°F) of the device is exceeded. The Reset temperature ranges are Manual Reset, One Shot, and 20°F to 440°F with Current ratings of 0.045 A to 25 A.
SelectionCharacteristics
Circuit: Describes the way the device actuates.
Switching Temperature: The nominal temperature at which a device’s output changes state. Actual temperature switch points are subject to manufacturing tolerances and hysteresis effects.
Reset Temperature: The temperature at which an actuated thermostat is rated to return to its resting (low-temperature) state.
Current Rating - AC: The maximum AC current the device is rated to interrupt, under the manufacturer’s stated test conditions.
Current Rating - DC: The maximum DC current the device is rated to interrupt, under the manufacturer’s stated test conditions.
Tolerance: Characterizes the extent of permitted variability of overall device temperature measurement among samples of a given part number, resulting from variations in manufacturing.
Switching Cycles: The number of actuation cycles at rated current that a device is expected to withstand.
Termination Style: Describes the shape or standard configuration of a device’s electrical connection(s).
Mounting Type: Indicates how the device is attached.
Package / Case: Describes the footprint and type of body the item has based on a general standard.
ProductExamples
| MFR PART # | B12A15005DEDB0GE |
|---|---|
| DIGI-KEY PART # | 317-1578-ND |
| MANUFACTURER | Cantherm |
| DESCRIPTION | Thermostat 302°F (150°C) SPST-NC Housed Sensor Wire Leads - 4" (101.6mm) |
| DATASHEET | Click Here |
| MFR PART # | OHD1-40M |
|---|---|
| DIGI-KEY PART # | 399-12135-ND |
| MANUFACTURER | KEMET |
| DESCRIPTION | Thermostat 104°F (40°C) SPST-NO Axial PC Pins |
| DATASHEET | Click Here |
| MFR PART # | 67F090 |
|---|---|
| DIGI-KEY PART # | 723-1182-ND |
| MANUFACTURER | Sensata-Airpax |
| DESCRIPTION | Thermostat 194°F (90°C) SPST-NO TO-220-2 PC Pins |
| DATASHEET | Click Here |
MediaLinks
Videos
Honeywell 2455RC Auto Reset Thermostats | DigiKey Daily
Articles
KEMET’s New Thermorite® Temperature Sensor with Built-In ON/OFF Reed Switch