ESD Protection Device meets needs of mobile handsets.January 5, 2010 -
With typical dynamic resistance of 0.4 ohm, CM1242-33CP provides single channel of bidirectional ±30 kV contact ESD protection in 0201 standard package that measures 0.6 x 0.3 mm. It complies with IEC61000-4-2 standard and offers clamping voltage of ±8.6 V. Applications include space-constrained applications in portable electronics, such as multimedia smart phones, netbooks and MIDs (mobile internet devices), e-book readers, and personal media players.
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Original Press release
California Micro Devices
490 N. McCarthy Blvd. #100
Milpitas, CA, 95035
USA
California Micro Devices Announces Industry's Smallest ESD Protection Device for Mobile Handsets
CM1242-33CP Provides Robust 30kV of Bi-Directional ESD Protection in a 0201 Single Channel Format
MILPITAS, Calif. - California Micro Devices (NASDAQ: CAMD) today announced the CM1242-33CP, first in a family of extremely small outline ESD (electrostatic discharge) protection devices. Establishing new industry benchmarks for ESD performance and small solution form factor, the CM1242 is an ideal solution for space constrained applications in multimedia smart phones, netbooks and MIDs (mobile internet devices), e-book readers and personal media players. The device provides a single channel of bi-directional ±30kV contact ESD protection in a very compact outline (0.6 mm x 0.3mm).
Robust ESD Protection
With multiple ESD ingress points, such as side function keys and individual keys in a keypad array, designers of smart phones need to pay particular attention to ESD design criteria. The robustness of the ESD protection, physical size and price are all important design considerations. Varistors, popular for their small size and low cost, also have high clamping voltages, slower response times than semiconductor based diode solutions and ESD performance which significantly degrades after each ESD event; as a result, they are not very effective.
When compared to other semiconductor based solutions, the CM1242-33CP offers performance and form factor advantages. With an extremely low dynamic resistance specification of 0.4 Ohm, the CM1242 features a lower clamping voltage and more robust ESD protection than competing solutions. An ESD protection device is only effective if it can shunt the majority of an ESD strike's energy to ground. This ability is a function of the protection device's dynamic resistance, which should be as low as possible. If the ESD protection device has a high dynamic resistance, energy that normally would be channeled through the ESD protection device will instead be allowed to reach the device under protection (DUP), resulting in a higher probability of damage.
Key Features
Extremely small 0201 standard package (0.6mm x 0.3mm)
Bi-directional ±30kV contact discharge ESD protection per IEC61000-4-2 standard
Low clamping voltage of ±8.6V
Extremely low dynamic resistance, typically 0.4 Ohm
Packaging, Pricing and Availability
The CM1242-33CP will be available at $0.035 each at 15,000 units. Engineering samples are available now, and production is scheduled for 1Q2010.
About California Micro Devices Corporation
California Micro Devices Corporation is a leading supplier of protection devices for the mobile handset, high brightness LED (HBLED), digital consumer electronics and personal computer markets. Detailed corporate and product information may be accessed at http://www.cmd.com.
The CMD logo is a registered trademark of California Micro Devices Corporation. All other trademarks are property of their respective owners.
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