Semtech Offers Industry's Only Low-Voltage Surge Protection Device Fully Compliant with Telcordia GR-1089 for Ethernet Interface ApplicationsThe LC03-3.3 protects gigabit ethernet interfaces in telecom and datacom systems from catastrophic damage due to lightning, ESD, and cable discharge events Camarillo, California - September 16, 2003 Semtech Corp. (NASDAQ: SMTC), a leading supplier of analog and mixed-signal semiconductors for communications, portable devices, computers, and industrial equipment, today announced availability of the communications industry’s only Telcordia GR-1089-compliant surge protection device for 10/100/1000 Ethernet interfaces. Typical applications for the LC03-3.3 protection device include carrier class Ethernet switches, DSLAMs, fiber to the home (FTTH) and fiber to the premises (FTTP) equipment. The LC03-3.3 transient voltage suppressor (TVS) provides a low-cost, easily implemented, standards-compliant solution to protect sensitive integrated circuits connected to high speed data and telecommunications lines from lightning, ESD (electrostatic discharge) and CDE (cable discharge events) that can enter through external plug ports and cause catastrophic damage. The LC03-3.3 meets these standards without sacrificing signal integrity or pcb real estate. The device employs Semtech’s patented EPD-TVS™ process technology to achieve superior electrical characteristics at a 3.3 volt operating level. And, housed in a standard, 8-lead plastic SO (small outline) package, the device also conserves board space. Ethernet PHY-chips are not designed to handle the high energy surges associated with lightning and ESD events. Since these chips are routinely manufactured using 0.15-micron and smaller line widths, they are extremely susceptible to catastrophic damage or upset. The LC03-3.3 combats this issue by minimizing the clamping or protection voltage during high-current surges. With its rated stand-off voltage of 3.3 volts, the LC03-3.3 “turns on” when the line voltage exceeds 3.5 volts. Most surge protection devices clamp at a higher operating voltage, allowing excessive transient energy to be transferred to the protected device. Internally, the LC03-3.3 utilizes compensation diodes in a full bridge configuration to reduce the effective loading capacitance to less than 8 picoFarads. This allows signal integrity to be preserved even at the high transmission speeds of GbE interfaces. Semtech’s LC03-3.3 is rated to handle a 100A (8/20µs) surge, a key metric for complying with GR-1089 requirements. "Semtech has been shipping EPD-TVS devices for low voltage ESD protection for several years," says Tom Dugan, Director of Protection Products at Semtech, "and the LC03-3.3 is the first device scaled to meet the higher energy lightning requirements of GR-1089. Many end users no longer want to use expensive shielded cable on Ethernet-based equipment, so manufacturers must have a GR-1089 compliant solution at the board level. We now provide that solution.” Semtech’s integrated LC03-3.3 can protect one pair of high-speed differential signals (two lines) used in standard 10BaseT (10Mbits/sec), 100BaseT (100Mbits/sec), or 1000BaseTX (1Gbit/sec over copper) Ethernet transceiver interfaces. The LC03-3.3 offers designers a practical and effective solution for meeting the industry’s toughest transient immunity standards, including Telcordia GR-1089 (intra-building), ITU (International Telecommunications Union) K.20, and the IEC’s (International Electrotechnical Commission) 61000-4-2 and -5. Key Features of the LC03-3.3
Pricing and AvailabilitySamples of the LC03-3.3 are available immediately, and distributors are currently being stocked for production shipments. Priced at $1.84 in 10,000-piece lots, the devices are delivered in EIA 481 standard tube, tape and reel packaging. Semtech offers comprehensive design assistance, including field- or factory-based support. Requests for volume pricing and delivery quotes, as well as evaluation kits and samples can be obtained by contacting salesinfo@semtech.com. Datasheets can be located at www.semtech.com. About SemtechSemtech Corporation is a leading supplier of high-quality analog and mixed-signal semiconductor products. The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, advanced communications, human interface, test and measurement, and high-speed clock/logic products. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. For more information, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone (805) 498-2111; email to info@semtech.com; or visit its web site at www.semtech.com. Press ContactTerry Sears, Marketing Communications Manager, Telephone: 805.498.2111 |
