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TVS Diode Arrays for Lighting & ESD Protection (SR05 Series) | Littelfuse

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TVS Diode Arrays for Lighting & ESD Protection (SR05 Series)The SR05 Series of TVS Diode Arrays (SPA® Diodes) from Littelfuse is designed to protect telecommunication and industrial equipment against ESD and lightning-induced surge events. Each channel or I/O pin can safely absorb up to 25A (tp=8/20μs) and repeated ESD strikes at ±30kV without performance degradation. Extremely low dynamic resistance and clamping voltage levels ensure protection for today’s small geometry chipsets, which are highly susceptible to damage from transients because of their very thin oxide layers and shallow transistor junctions. With just 6pF of capacitance from each I/O to ground, these provide robust protection while maintaining signal integrity, preventing data loss during transmission.   

Features & Benefits:

  • Very low dynamic resistance (RDYN) of 0.3Ω
  • Low capacitance of 6pF from I/O to GND
  • Robust surge protection: lightning, IEC61000-4-5, 25A (8/20µs); peak pulse power, 450W (8/20µs)
  • Enhanced ESD capability: IEC61000-4-2, ±30kV contact, ±30kV air
  • Produces clamping voltages at least 10 percent lower than competitive devices; better able to protect modern/small geometry chipsets against industry-defined ESD transients
  • Capacitance up to 40 percent lower than similar market solutions; helps to preserve signal integrity, minimizes data loss during transmission
  • High power and surge handling capability offers more design margin to electrical threats defined by industry standards
  • Enhanced ESD protection far exceeds the highest level of the IEC61000-4-2 standard (±8kV), ensuring maximum reliability of end products in the field

Applications:

  • T1/E1 IC/Secondary Protection
  • Ethernet 10BaseT
  • WAN/LAN Equipment
  • ISDN S/T Interface
  • Video Lines
  • Microcontroller Input Protection

Additional Information: