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SCHOTT North America
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NEC SCHOTT SEFUSE™ SH Type
Our experienced research and development team works closely with our customers in order to create innovative solutions for the electronics market. One of our latest achievements, the NEC SCHOTT SEFUSE™ SH type, is a thermal cutoff device containing an electrical resistor.
Product Description
Like the other thermal cutoff types, this SH device is integrated into the current circuit of an electrical appliance. The purpose is to interrupt the flow when overheating leads to dangerous levels. This is achieved when the thermal element heats up in response to the rising temperature and melts when the ambient temperature reaches a critical point.
In addition, the SH type also has an electrical resistor that, in case the load becomes unsustainable, will heat itself until the thermal element melts and interrupts the current.
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Product Advantages
The SH type thermal cutoff offers the following advantages:
- Low-profile construction with a height of only 1.7 mm
- Fast thermal response
- High sensitivity due to its ceramic cover
- Appropriate for electrical flows with large currents (12A - 15A)
- In accordance with RoHS guideline
Applications
The SH type is mainly used for battery packs that are embedded in notebook computers.
Technology
The technology behind the SH type is similar to that of the SM type, in which a fusible alloy acts as a thermal element and is coated with a special flux covered by a ceramic base and cap. It connects two leads inside the device and reacts to abnormal temperatures by melting. In addition, a third lead is connected through an internal resistor which will produce heat if the load becomes unsustainable.
For further details about the Thermal Cutoff technology, please refer to our technology page.
Features / Specifications
All versions of the SH type have an operating temperature of 139ºC. The rated current is 12A for the D6X and the D6Y version and 15A for the D6WX version.
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| Series |
Electrical Ratings |
Opening
Temperature |
Standard |
| AC/DC |
Current |
Voltage |
| D6X Type |
DC |
12A |
32V |
139°C |
UL, VDE |
| D6WX Type |
DC |
15A |
32V |
139°C |
UL, VDE |
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Forms of Supply and Product Packaging
Standard forms of supply are available. Please contact our sales department if you have any special requests with regards to supply and packaging.
Quality Assurance
All SH type thermal cutoffs undergo an automatic internal resistance check, in addition to the standard quality assurance processes of NEC SCHOTT to ensure the consistent high quality of the product.
For further information, please review our quality assurance page. The Thermal Cutoff catalogs are also available from our download page.
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Contact
Electronic Packaging
SCHOTT North America, Inc.
122 Charlton Street Southbridge, MA 01550 USA
 | +1 (508) 765-3370 |
 | +1 (508) 765-3377 |
E-mail
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