SRDA3.3-4 Datasheet | SEMTECH

PROTECTION PRODUCTS - Rail Clamp® Description Rail Clamps are surge rated diode arrays designed to protect high speed data interfaces. The SRDA series has been specifically designed to protect sensitive ponents which are connected to data and transmission lines from overvoltage caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning. The unique design incorporates surge rated, low capacitance steering diodes and a TVS diode in a single package. During transient conditions, the steering diodes direct the transient current to ground via the internal low voltage TVS. The TVS diode clamps the transient voltage to a safe level. The low capacitance array configuration allows the user to protect up to four high-speed data lines. The SRDA3.3-4 is constructed using Semtech’s proprietary EPD process technology. The EPD process provides low stand-off voltages with significant reductions in leakage current and capacitance over siliconavalanche diode processes. They feature a true operating voltage of 3.3 volts for superior protection. These devices are in a 8-pin SOIC package. It measures 3.9 x 4.9mm. They are available with a Sn Pb or Ro HS/WEEE pliant matte tin lead finish. The high surge capability (Ipp=25A, tp=8/20μs) means it can be used in high threat environments in applications such as CO/CPE equipment, telemunication lines, and video lines. Rail Clamp® Low Capacitance TVS Array Features ‹ Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) ±15k V (air), ±8k V (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 24A (8/20μs) ‹ Array of surge rated diodes with internal TVS diode ‹ Protects four I/O lines ‹ Low capacitance (<15p F) for high-speed interfaces ‹ Low operating voltage: 3.3V ‹ Low clamping voltage ‹ Solid-state technology Mechanical Characteristics ‹ JEDEC SOIC-8 package ‹ Lead Finish: Sn Pb or Matte Sn ‹ Molding pound flammability rating: UL 94V-0 ‹ Marking : Part number, date...