CM1452-04CP Equivalent & Substitute Parts

Part Overview

The CM1452-04CP is a 4-channel LC (Pi) EMI filter manufactured by onsemi, designed for low-pass filtering applications in mobile device data lines. This 3rd order filter features 17nH inductance and 15pF capacitance per channel with a 148MHz cutoff frequency and 30dB attenuation across the 800MHz to 2.7GHz band. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

CM1452-04CP

onsemiIn Stock: 7485CM1452-04CP Datasheet

Current PartRFQ

CM1457-04CP

onsemiIn Stock: 26877CM1457-04CP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for LC (Pi) EMI filters is determined by the following critical parameters:

• Package compatibility: Both parts must use the same 10-WFBGA, WLCSP package to ensure PCB footprint and assembly compatibility
• Channel configuration: Both parts must provide 4 channels for equivalent circuit integration
• Mounting type: Surface mount requirement must be maintained
• Operating temperature range: Must support -40°C ~ 85°C minimum
• ESD protection: Must be present in both parts
• Application domain: Both parts target data line filtering in mobile devices
• Electrical performance tolerance: Filter order, inductance, capacitance, cutoff frequency, and attenuation values may vary within acceptable design margins for the target application

The CM1457-04CP meets all package, channel, mounting, temperature, ESD, and application requirements. Electrical parameter differences (5th order vs. 3rd order, higher cutoff frequency, different inductance/capacitance values, and different attenuation characteristics) represent design trade-offs that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The CM1457-04CP is available as a substitute for the obsolete CM1452-04CP based on identical package, channel count, mounting type, and operating temperature specifications. Both parts maintain REACH compliance and EAR99 export classification.

Key considerations for selection:

• Current capacity: CM1457-04CP is rated for 15mA versus CM1452-04CP at 30mA. Applications requiring the full 30mA rating cannot use the substitute without circuit redesign.
• Filter characteristics: CM1457-04CP provides 5th order filtering with higher cutoff frequency (300MHz vs. 148MHz) and greater attenuation (-35dB vs. 30dB). These differences alter frequency response and may require circuit validation.
• Electrical parameters: Inductance and capacitance values differ significantly (70nH/12.5pF vs. 17nH/15pF), affecting impedance matching and filter performance in the target frequency band.
• Product lifecycle: CM1457-04CP carries "Last Time Buy" status, indicating limited future availability. Long-term production requirements should consider alternative suppliers or filter architectures.

Frequently Asked Questions (FAQ)

Q: Can CM1457-04CP be used as a direct drop-in replacement for CM1452-04CP?

A: Physical compatibility is confirmed (identical package, footprint, and mounting). Electrical compatibility depends on circuit requirements. The 15mA current limit and different filter characteristics (5th order, 300MHz cutoff, -35dB attenuation) must be evaluated against design specifications.

Q: What are the main electrical differences between these parts?

A: CM1452-04CP is a 3rd order filter with 17nH inductance, 15pF capacitance, 148MHz cutoff, and 30dB attenuation. CM1457-04CP is a 5th order filter with 70nH total inductance, 12.5pF total capacitance, 300MHz cutoff, and -35dB attenuation. The higher filter order and different component values result in different frequency response characteristics.

Q: Are both parts available in the same packaging options?

A: Both parts use 10-WFBGA, WLCSP surface mount packages with identical height (0.69mm). Physical dimensions are nearly identical (1.67mm length, width differs by 0.06mm). Tape & Reel packaging is specified for CM1457-04CP.

Q: What is the impact of the 15mA current limit on CM1457-04CP?

A: Applications designed for the CM1452-04CP 30mA rating cannot operate at full current with CM1457-04CP. Circuit redesign or parallel channel configuration may be required for higher current applications.

Q: Are there compliance or regulatory differences?

A: Both parts are REACH Unaffected and classified as EAR99. Moisture sensitivity level is identical (MSL 1, Unlimited). No regulatory barriers exist for substitution from a compliance perspective.

Q: What should be considered regarding product lifecycle?

A: CM1452-04CP is obsolete with no future availability. CM1457-04CP is Last Time Buy, indicating limited remaining stock. For new designs or long-term production, alternative EMI filter solutions should be evaluated.