onsemi CM1426: EMI Filter Array with ESD Protection
The onsemi CM1426 is a family of pi-style EMI filter arrays designed to provide robust Electrostatic Discharge (ESD) protection for sensitive electronic components. Integrating four, six, or eight C-R-C filter channels within a compact Chip Scale Package (CSP) with a 0.50 mm pad pitch, the CM1426 offers a high level of integration for space-constrained applications. Each channel features component values of 8.5 pF - 100 - 8.5 pF, with a cut-off frequency of 230 MHz, making it suitable for data rates up to 92 Mbps. The integrated avalanche-type ESD diodes on every pin provide exceptional protection against ESD strikes, exceeding the IEC61000-4-2 international standard with 8 kV contact discharge protection and 15 kV Human Body Model (HBM) protection. The CM1426 incorporates OptiGuard for enhanced reliability during assembly and is available in RoHS compliant, lead-free finishing. Its small package and convenient pin assignments make it ideal for portable electronics such as wireless handsets, PDAs, and notebook computers, specifically for filtering and protecting data and control lines for I/O ports, LCD displays, and camera interfaces.
Product Attributes
- Brand: onsemi
- Technology: Pi-style EMI filter array with ESD protection
- Package Type: Chip Scale Package (CSP)
- Lead Finish: RoHS compliant, Lead-free
- Special Feature: OptiGuard coated for improved reliability
Technical Specifications
| Model | Channels | Package | Footprint (mm) | Pad Pitch (mm) | Filter Values (per channel) | Cut-off Frequency | Max Data Rate | ESD Protection (IEC 61000-4-2) | ESD Protection (HBM) | Attenuation (Typical at 1 GHz) |
|---|---|---|---|---|---|---|---|---|---|---|
| CM1426-04CP | 4 | CSP-10 | 1.96 x 1.33 | 0.50 | 8.5 pF - 100 - 8.5 pF | 230 MHz | 92 Mbps | 8 kV Contact Discharge | > 15 kV | > 20 dB |
| CM1426-06CP | 6 | CSP-15 | 2.96 x 1.33 | 0.50 | 8.5 pF - 100 - 8.5 pF | 230 MHz | 92 Mbps | 8 kV Contact Discharge | > 15 kV | > 20 dB |
| CM1426-08CP | 8 | CSP-20 | 3.96 x 1.33 | 0.50 | 8.5 pF - 100 - 8.5 pF | 230 MHz | 92 Mbps | 8 kV Contact Discharge | > 15 kV | > 20 dB |
Electrical Characteristics
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resistance (R) | - | 80 | 100 | 120 | |
| Total Channel Capacitance (CTOTAL) | At 2.5 VDC Reverse Bias, 1 MHz, 30 mVAC | 13.6 | 17 | 20.4 | pF |
| Capacitance (C) | At 2.5 VDC Reverse Bias, 1 MHz, 30 mVAC | 6.8 | 8.5 | 10.2 | pF |
| Standoff Voltage (VDIODE) | IDIODE = 10 A | - | - | 6.0 | V |
| Diode Leakage Current (ILEAK) | VDIODE = 3.3 V | - | 0.1 | 1 | A |
| Signal Clamp Voltage (Positive) | ILOAD = 10 mA | 5.6 | - | 9.0 | V |
| Signal Clamp Voltage (Negative) | ILOAD = -10 mA | -1.5 | - | -0.4 | V |
| In-system ESD Withstand Voltage (Human Body Model) | MIL-STD-883, Method 3015 | - | 15 | - | kV |
| In-system ESD Withstand Voltage (Contact Discharge per IEC 61000-4-2 Level 4) | Note 2 | - | 8 | - | kV |
| Dynamic Resistance (RDYN) | Positive | 2.3 | - | - | |
| Dynamic Resistance (RDYN) | Negative | 0.9 | - | - | |
| Cut-off Frequency (fC) | ZSOURCE = 50 , ZLOAD = 50 , R = 100 , C = 17 pF | - | 230 | - | MHz |
Applications
- LCD and Camera Data Lines in Mobile Handsets
- I/O Port Protection for Mobile Handsets, Notebook Computers, PDAs
- EMI Filtering for Data Ports in Cell Phones, PDAs, or Notebook Computers
- Wireless Handsets
- Handheld PCs/PDAs
- LCD and Camera Modules
Operating Conditions
| Parameter | Rating | Units |
|---|---|---|
| Operating Temperature Range | -40 to +85 | C |
2410301746_onsemi-CM1426-08CP_C20511423.pdf
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