2-pole type, surface mount type
Surface mount type two-pole varistor (GDT) It is implemented in the internal circuits of communication devices and is used to protect equipment from induced voltages caused by communication lines and signal lines. This surface mount component achieves higher durability compared to the conventional SD4 type. It has the same external dimensions as the conventional SD4 series, and the substrate land pattern is common. Therefore, no redesign is necessary when switching to this product.
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basic information
- Extremely small with high current tolerance - Very low capacitance (below 0.5pF) - Broadband compatible - Excellent resistance to heat and mechanical shock due to the use of a ceramic enclosure - Superior tolerance to repeated surge currents and temperature environmental characteristics - Packaging method suitable for surface mounting with embossed taping - RoHS compliant - UL certified
Price range
Delivery Time
Applications/Examples of results
- Various electronic devices - Protection of communication lines - Exchange equipment - PBX (Private Branch Exchange) - Telephone - FAX
Line up（6）
| Model number | overview |
|---|---|
| SDH4-75 | DC discharge start voltage 75V |
| SDH4-90 | DC discharge starting voltage 90V |
| SDH4-145 | DC discharge starting voltage 145V |
| SDH4-200 | DC discharge starting voltage 200V |
| SDH4-230 | DC discharge starting voltage 230V |
| SDH4-350 | DC discharge starting voltage 350V |
catalog（4）
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Company information
Since its establishment in 1930, Sanko Shiya has expanded its business in response to the needs of the times, ranging from the design and manufacturing of communication safety devices and lightning rods to the design and manufacturing of meteorological observation instruments and optical technology-related equipment. Additionally, we established Franklin Japan (in Sagamihara City), a lightning and meteorological information company, and provide high-precision lightning strike information services through a lightning observation network installed across Japan, solidifying our position as the world's only comprehensive company related to 'lightning,' from observation to protection.
