Camarillo, Calif. Designed to protect 3G/CMDA mobile phones from electrostatic discharge (ESD) and increased levels of electromagnetic interference (EMI) and radio frequency interference (RFI), the Semtech EClamp 237xP protection devices integrate TVS diodes for ESD protection and a resistor-capacitor (RC) network for EMI/RFI filtering. These devices offer low resistance and low capacitance in a small leadless package that consolidates 32 discrete devices to save board space.
The EClamp237xP family includes the four-line EClamp2374P, the six-line EClamp2376P and the eight-line EClamp2378P. The devices integrate a TVS diode on each line and a RC network. All models feature low series resistance of 100 ohms with a capacitance of 20 pF to deliver more than 30 dB of attenuation from 1.8 GHz to 2.5 GHz. The devices offer ESD protection to IEC 61000-4-2 Level 4 (±15 kV air; ±8kV contact).
As manufacturers add more capabilities such as high-resolution displays and video and digital cameras, they use more parallel data lines to connect the display and cameras to the baseband controller, which increases the amount of EMI and RFI that can distort display signals and ESD risk to the baseband controller, said the company. The devices are designed to protect and filter high-speed parallel interfaces without signal degradation, and feature very low clamping voltage to protect the baseband controller.
The EClamp237xP devices are packaged in the narrow form factor Semtech leadless Package (SLP) that can replace flip-chip alternatives. All devices provide a uniform 1.6-mm width and low-profile of 0.6 mm but differ in length depending on the number of lines. These devices are RoHS/WEEE compliant.
EClamp237xP devices are available immediately in production quantities and are priced from $0.25 each to $0.45 each in quantities of 10,000. Ordering codes are EClamp2374P.TCT for the four-line version, EClamp2376P.TCT for the six-line version and EClamp2378P.TCT for the eight-line version. Evaluation kits and samples are available.
Semtech Corp., 1-805-498-2111, www.semtech.com