PCB-Bimetal Disc Thermostat TO-220 Thermal Cutoff Switch

China Custom Hi-Amp 2A~7.5Amp 1/2 Inch TO-220 PCB Disc Thermostat Brand (JUC 31F, 6700, 67F070, KSD-01F) Choice and Price Advantage. TO-220 PCB Thermal Cutoff Switch are subminiature bimetal thermostats that can be mounted on a PCB. They can be used for a variety of applications, including: Heat-sink sensing, Power component monitoring, Power supplies, and Air-sensing on PCBs.
Here are some examples of TO-220 PCB Thermal Cutoff Switch thermostats:
JUC 31F/ 6700 Series: A lead-free, SPST Thermal Cutoff Switch thermostat with an operating range of 104º F to 266º F;
KSD-01F: A normally closed thermal switch that opens at 203º F;
JUC 31F Series: A RoHs compliant, snap action SPST bimetallic Temperature Control Switch;
67L090: A subminiature PCB mount Thermal Control Switc thermostat that closes on rise 90C.

KSD-01F Temperature Switches TO220 Normally Open H and Normally Closed D

PCB-Bimetal Disc Thermostat TO-220 Thermal Cutoff Switch

Hi-Amp 2A~7.5Amp TO-220 PCB Disc Thermostat

China Custom Low TEMPERATURE TO-220 Disc Thermostat AS LOW AS 0C (32F). The JUC-31F series is a RoHs compliant, snap action SPST bimetallic thermostat which provides accurate sensing capabilities in a single device.

The 67F070, KSD-01F Series confirms to IEP standards Y220/TO220. Therefore they may be automatically placed and soldered in a pick/place applications, ideal for printed circuit boards Factory calibrated 0C-130C in 5C increments.

This bimetal discThermal Cutoff Switch is designed for surface or air sensing for printed circuits and heat sinks and is available in normally open or normally closed configuration. Other features include:

Temperature range 0C – 155 C
Rohs compliant per EU directive 2002/95/EC, ul, TUV, ul
TO-220 international electronic package standard
100K cycles rating

TO-220 PCB Disc Thermostat Applications
Power supplies
Medical devices
Test equipment
Refrigeration
HVAC
PCB

TO-220 PCB Disc Thermostat Main parts
1) Ceramic cover plate 2) stationary silver contact 3) spring disc 4) movable contact 5) Conductive housing 6) bimetal disc

TO-220 PCB Disc Thermostat Construction
Stationary silver contact are riveted with ceramic cover plate. The movable contact are welded to the spring disc, which is in the shape of a cross, and the four feet are connected to the bottom of the housing. The inner hole of the bimetal disc is placed on the spring disc through the movable contact. The current pass through the stationary silver contact to the movable contact, and then connects the conductive housing through spring discs to form a loop.

TO-220 PCB Disc Thermostat Function
When the circuit is normal, the movable contact is in close contact with the stationary silver contact under the pre-pressure of the spring disc. When the rated operating temperature is reached, the bimetal disc is deformed by heat, snaps into its inverted position and pushes the spring disc downwards. The contact is abruptly opened and the temperature rise of the device to be protected is disrupted.
After the circuit is disconnected, the ambient temperature begins to fall. When it reaches the defined reset temperature, the bimetal disc and the spring disc snaps back into its start position, the movable contact and the stationary silver contact will close again, and the circuit returns to the conduction state.

TO-220 PCB Disc Thermostat PARAMETER

Nominal switching temperature (NST) in 5°C : 60 °C – 180 °C
Tolerance (standard): ±5K
Reverse switch temperature (RST) tolerance: ≥ 35 °C (≤ 80°C NST)
-30K±15K (≥ 85°C ≤ 180° C NST) :Thickness 5.6mm /Diameter 9.8mm
Length of the insulation cap: 18.3mm
Resistance to impregnation:suitable
Suitable for installation in protection class: I+ll
Pressure resistance to the switch housing:300N
Standard connection :0.33 mm² / AWG22
Insulation voltage:1.5 kV
Operating voltage range AC/DC:up until 500 V AC / 14 V DC
Rated voltage AC:250 V(VDE) ,277 V(ul)
Rated current AC cos ϕ = 1.0 /cycles: 2.5A / 10,000
Max. switching current AC cos ϕ = 1.0 /cycles: 6.3 A / 3,000, 7.5 A / 300
Rated current AC cos ϕ = 0.6 /cycles:1.6 A / 10,000
Rated voltage DC: 12.0 V
Max. switching current DC /cycles: 40.0 A / 5,000
Total bounce time:< 1 ms
Contact resistance: ≤ 50 mΩ
Vibration resistance at 10 … 60 Hz:100 m/s²
Available approvals: UL/TUV/CQC/CB