CSPEMI202AG Equivalent & Substitute Parts

Part Overview

The CSPEMI202AG is a 2-channel RC (Pi) EMI filter manufactured by onsemi, designed for low-pass filtering applications with a 2nd order filter topology. This component features 68 Ohm resistance per channel and 47 pF capacitance values, with a 60 MHz cutoff frequency and 35 dB attenuation across the 800 MHz to 2.7 GHz frequency range. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

CSPEMI202AG

onsemiIn Stock: 104147CSPEMI202AG Datasheet

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EMI7112FCTAG

onsemiIn Stock: 1440EMI7112FCTAG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CSPEMI202AG is constrained by the following critical parameters that must align for functional equivalence:

• Filter Topology: Low-pass filtering function with multi-channel configuration
• Channel Count: 2-channel architecture
• Surface Mount Packaging: 5-WFBGA or WLCSP package family
• ESD Protection: Integrated ESD protection capability
• Operating Temperature Range: Minimum coverage of -40°C to 85°C
• Mounting Compatibility: Surface mount assembly compatibility

The EMI7112FCTAG is identified as a substitute part. While it shares the same manufacturer (onsemi), channel count (2), surface mount package family (5-UFBGA, WLCSP), ESD protection, and low-pass filter function, it differs in filter order (3rd vs. 2nd), technology (LC Pi vs. RC Pi), and electrical characteristics. These differences reflect design evolution within the onsemi EMI filter product line while maintaining core functional compatibility for 2-channel surface mount low-pass filtering applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CSPEMI202AG and EMI7112FCTAG are classified as obsolete products. Selection between these parts must account for the following compliance and regulatory factors:

• REACH Compliance: Both parts are REACH Unaffected, indicating no restrictions under REACH regulations
• Export Classification: Both parts are classified as EAR99, permitting standard export procedures
• Moisture Sensitivity: Both parts carry MSL 1 (Unlimited), requiring no special moisture control during storage or assembly
• Temperature Operating Range: The EMI7112FCTAG provides extended temperature coverage (-40°C to 125°C) compared to the CSPEMI202AG (-40°C to 85°C), offering broader operational capability in high-temperature environments

The primary technical differences—filter order, technology, cutoff frequency, and channel resistance—must be evaluated against specific circuit requirements. The EMI7112FCTAG's higher filter order (3rd) and lower channel resistance (0.35 Ohms vs. 68 Ohms) represent distinct electrical characteristics that may or may not align with the original design intent.

Frequently Asked Questions (FAQ)

Q: Can EMI7112FCTAG directly replace CSPEMI202AG in existing designs?

A: Both parts share 2-channel low-pass filtering function, surface mount packaging compatibility, and ESD protection. However, the EMI7112FCTAG differs in filter order (3rd vs. 2nd), technology (LC Pi vs. RC Pi), cutoff frequency (20 MHz vs. 60 MHz), and channel resistance (0.35 Ohms vs. 68 Ohms). Direct substitution requires circuit-level analysis to confirm these electrical differences do not impact system performance.

Q: What are the package compatibility considerations?

A: The CSPEMI202AG uses 5-WFBGA, WLCSP packaging, while the EMI7112FCTAG uses 5-UFBGA, WLCSP packaging. Both are ball grid array variants in the WLCSP family with similar footprints (1.41 mm x 0.93 mm vs. 1.26 mm x 0.89 mm) and heights (0.65 mm vs. 0.64 mm). PCB layout verification is necessary to confirm mechanical compatibility.

Q: Are there temperature range implications for substitution?

A: The EMI7112FCTAG supports -40°C to 125°C operation, exceeding the CSPEMI202AG's -40°C to 85°C range. If the original design operates within the CSPEMI202AG's temperature limits, the EMI7112FCTAG provides additional thermal margin. Designs requiring operation above 85°C benefit from the extended range.

Q: What is the significance of the different resistance values?

A: The CSPEMI202AG specifies 68 Ohms per channel, while the EMI7112FCTAG specifies 0.35 Ohms per channel. This represents a fundamental difference in filter impedance characteristics. The lower resistance of the EMI7112FCTAG may reduce insertion loss but alters the filter's frequency response and attenuation profile.

Q: How do the attenuation specifications compare?

A: The CSPEMI202AG provides 35 dB attenuation across 800 MHz to 2.7 GHz, while the EMI7112FCTAG provides 40 dB attenuation at 700 MHz. The EMI7112FCTAG's higher attenuation value and lower cutoff frequency (20 MHz vs. 60 MHz) indicate more aggressive filtering characteristics suitable for different frequency bands and applications.