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 generated 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, no redesign is necessary when switching to this product.
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basic information
- Ultra-compact with high current tolerance - Very small 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 - UL
Price range
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Applications/Examples of results
- Various electronic devices - Protection of communication lines - Exchange equipment - PBX - Telephone - FAX
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 starting voltage 230V |
| 3SDH4-350 | SMD (Surface Mount Device) DC discharge start voltage 350V |
catalog（3）
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Company information
Since its founding in 1930, Sankosha has expanded its business in response to the needs of the times, from the design and manufacturing of communication security 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 weather information company, and provide high-precision lightning strike information services through a lightning observation network installed throughout Japan, solidifying our position as the world's only comprehensive company related to 'lightning,' from observation to protection.
