3-terminal type, surface mount type
It is implemented in the internal circuits of communication devices and is used to protect the equipment from induced voltages caused by communication lines and signal lines. This is a surface-mounted device that achieves higher durability than the conventional 3SD4 type. It has the same external dimensions as the conventional 3SD4 series, and the substrate land pattern is common. Therefore, redesign is not necessary when switching to this product.
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basic information
- Extremely small with high current capacity - Very low capacitance (below 0.5pF) - Broadband compatible - Excellent resistance to heat and mechanical shock due to the use of a ceramic enclosure - Superior repeat surge current capacity and temperature environmental characteristics - Packaging method suitable for surface mounting with embossed taping - RoHS - UL
Price range
Delivery Time
Applications/Examples of results
・Various electronic devices ・Protection of communication lines ・Switchboard ・PBX ・Telephone ・FAX
Detailed information
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Outline dimensions diagram and recommended land pattern (unit: mm)
Line up（6）
| Model number | overview |
|---|---|
| 3SDH4-75 | SMD (Surface Mount Device) DC discharge start voltage 75V |
| 3SDH4-90 | SMD (Surface Mount Device) DC discharge starting voltage 90V |
| 3SDH4-145 | SMD (Surface Mount Device) DC discharge start voltage 145V |
| 3SDH4-200 | SMD (Surface Mount Device) DC discharge start voltage 200V |
| 3SDH4-230 | SMD (Surface Mount Device) DC discharge start voltage 230V |
| 3SDH4-350 | SMD (Surface Mount Device) DC discharge starting voltage 350V |
catalog（3）
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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.
