Power Thyristor Surge Suppressor
PTSS (Power Thyristor Surge Suppressor), It is a solid-state silicon device with a bidirectional, four layer PNPN structure.


Features:
1. Super surge bearing capacity
    The peak pulse current (IPP) can reach several thousand amperes (such as 5000A), much higher than that of ordinary TVS.
    Can withstand standard lightning waves (10/700 μ s, 8/20 μ s) and power induced wave impacts.
2. Extremely fast response speed
    Response time * *<10ns (nanosecond level) * *, capable of instantly suppressing overvoltage.
3. Low conduction voltage drop (VF)
    After conducting, the voltage drop is only a few volts, effectively limiting the backend voltage and providing excellent protection.
4. Bidirectional symmetrical protection
    A single chip can simultaneously suppress surges of both positive and negative polarities.
5. No aging, long lifespan
    The performance does not degrade with multiple surge impacts, and the reliability is far superior to MOV (varistor).
6. Failure safety mode
    When a device fails, it is usually in a short-circuit state to ensure that the fault is clear and prevent secondary damage to the equipment.
7. Low capacitance characteristic
    Low off state capacitance, suitable for protecting high-frequency signal lines such as high-speed communication and PoE.

Applications:
1. Communication infrastructure (high-risk areas for lightning strikes)
    Telecommunications base station DSLAM、 Program controlled switch, xDSL user line.
   Meets strict standards such as ITU-T K.20/K.21/K.28 and GR-1089.
2. Outdoor and Industrial Equipment
    Photovoltaic inverter, UPS power supply, industrial frequency converter, PLC I/O port.
    RS-485/422 communication bus, sensor long line protection.
3. Power System and Automotive Electronics
    AC distribution lines, car charging systems, and onboard electronic devices.
4. PoE and Network Devices
    Ethernet switch, IP camera, and power receiving device (PD) network port protection.
5. Security and Monitoring System
    Surge protection for long-distance coaxial video cables and alarm signal cables.
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