CM1421

• Functionally and pin compatible with CMD&primes CSPEMI607
• Four channels of combined EMI/RFI filtering plus ESD protection
• Four additional channels of ESD-only protection
• Better than 30dB attenuation (typical) at 1 GHz
• ±15kV ESD protection on all channels (IEC 61000-4-2 Level 4, contact discharge)
• ±30kV ESD protection on all channels (HBM)
• Chip Scale Package features extremely low lead inductance for optimum filter and ESD performance
• 15-bump, 2.960mm X 1.330mm footprint Chip Scale Package (CSP)
• OptiGuard™ coated for improved reliability
• Lead-free version available

The CM1421 is a multichannel array consisting of four low-pass filters with integrated ESD protection and four ESD-only protection channels designed to reduce EMI/RFI emissions on LCD data lines in mobile handsets. The CM1421 has component values of 15pF-100-15pF. These devices include ESD protection diodes on every pin, which provide a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (ESD). The ESD diodes connected to the filter ports safely dissipate ESD strikes of ±15kV, exceeding the maximum requirement of the IEC 61000-4-2 international standard. Using the MIL-STD-883 (Method 3015) specification for Human Body Model (HBM) ESD, the pins are protected for contact discharges at greater than ±30kV.

CM1421 is particularly well suited for portable electronics (e.g. wireless handsets, PDAs, notebook computers) because of its small package format and easy-to-use pin assignments. In particular, the CM1421 is ideal for EMI filtering and protecting data lines from ESD for the LCD display in clamshell handsets.

The CM1421 incorporates OptiGuard™ coating which results in improved reliability. The CM1421 is available in space-saving, low-profile chip-scale packages with optional lead-free finishing.

Note: Some of the devices listed here have suggested replacements available. Please see additional information at the end of this page.