ESD protection devices have low dynamic resistance
A California Micro Devices product story
Edited by the Electronicstalk editorial team Dec 23, 2009
California Micro Devices has launched the CM1242-33CP, the first in a family of small outline electrostatic discharge (ESD) protection devices.
The CM1242 is said to be an ideal solution for space-constrained applications in multimedia smartphones, netbooks and mobile internet devices, e-book readers and personal media players.
The device provides a single channel of bidirectional +/- 30kV contact ESD protection in a compact outline of 0.6 x 0.3mm.
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 that degrades after each ESD event - as a result, they are not very effective.
When compared with other semiconductor-based solutions, the CM1242-33CP is said to offer performance and form-factor advantages.
With low dynamic resistance specification of 0.4ohm, the CM1242 features low clamping voltage and robust ESD protection.
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 channelled through the ESD protection device will instead be allowed to reach the device under protection (DUP), resulting in a higher probability of damage.
Not what you're looking for? Search the site.
Google Ads
Contact California Micro Devices
Related Stories
Browse by category
- Active Components (11,616)
- Active Components (4)
- Analogue and Mixed-Signal ICs (1,734)
- Communications ICs (Wired) (1,803)
- Communications ICs (Wireless) (1,600)
- Discrete Power Devices (432)
- Memory Devices and Modules (770)
- Microprocessors, Microcontrollers and DSPs (2,083)
- Power-Supply ICs and Controllers (2,440)
- Programmable Logic Devices (608)
- Standard Logic Devices (142)
- Design and Development (9,668)
- Design and Development (1)
- Design and Development Hardware (1,055)
- Design and Development Software (4,684)
- Design Services (313)
- Embedded Software and Operating Systems (1,688)
- Intellectual Property Cores (1,566)
- Reference Designs (361)
- Electronics Manufacturing, Packaging (3,247)
- Enclosures and Panel Products (3,502)
- Enclosures and Panel Products (2)
- Fans and Blowers (230)
- Floor-Standing Racks, Cabinets, Enclosures (252)
- Gaskets, Seals and Screens (127)
- Handheld and Other Small Enclosures (143)
- Heatsinks and Thermal Management (204)
- Indicators and Audio (80)
- Instrument Cases, Benchtop, Wall-Mounting Enclosures (353)
- LCD Modules (496)
- Monitors (136)
- Other OEM Display Modules, Meters (241)
- Printers, Knobs, Bezels, Other Panelware (158)
- Rotary Controls, Joysticks etc (138)
- Switches and Keyboards (621)
- Touchscreens and Touch Sensors (314)
- Industry News (1,980)
- Interconnection (3,195)
- Antennas and Feeders (320)
- Boards and Backplanes (158)
- Cables and Wires (486)
- Interconnection (12)
- PCB Connectors (613)
- Plugs and Sockets (1,263)
- Terminals and Power (288)
- Optoelectronics (1,775)
- Passive Components (3,244)
- Capacitors (704)
- Circuit Protection Devices (516)
- Electromechanical Components (579)
- EMC Components (416)
- Frequency Control Components (447)
- Passive Components (1)
- Resistors (318)
- Transformers and Inductors (263)
- Power Supplies (2,599)
- AC/DC Power Supplies (1,087)
- Batteries and Chargers (256)
- DC/AC Inverters (80)
- DC/DC Convertors (942)
- OEM Power Supplies (0)
- Power Supplies (8)
- UPSs (226)
- Subassemblies (5,062)
- CompactPCI Boards, Assemblies (381)
- Embedded Computing and Control (1,389)
- Networking Hardware (970)
- PC-Compatible Boards, Assemblies (806)
- Subassemblies (1)
- VMEbus Boards, Assemblies (425)
- Wireless Communications (1,090)
- Test and Measurement (5,315)
- ATE Systems (393)
- Board-Level Instruments (559)
- Compliance Engineering (911)
- Sensors and Data Acquisition (942)
- Stand-Alone Instruments (2,050)
- Test Accessories (439)
- Test and Measurement (6)
