IP4251CZ8-4-TTL,13 Equivalent & Substitute Parts

Part Overview

The IP4251CZ8-4-TTL,13 is a 4-channel RC (Pi) EMI filter manufactured by Nexperia USA Inc., designed for low-pass filtering applications in LAN and WAN systems. This component features a 2nd-order filter topology with 100 Ohms resistance and 10pF total capacitance per channel, housed in an 8-UFDFN Exposed Pad surface mount package. The part is currently listed as obsolete, making identification of suitable alternatives necessary for ongoing design support and component procurement.

Substiute Parts

IP4251CZ8-4-TTL,13

Nexperia USA Inc.In Stock: 1045IP4251CZ8-4-TTL,13 Datasheet

Current PartRFQ

IP4252CZ8-4-TTL,13

Nexperia USA Inc.In Stock: 5815IP4252CZ8-4-TTL,13 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IP4251CZ8-4-TTL,13 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Filter topology: RC (Pi) 2nd-order low-pass
• Number of channels: 4
• Package type: 8-UFDFN Exposed Pad
• Physical dimensions: 0.067" L x 0.053" W x 0.022" H
• Operating temperature range: -40°C ~ 85°C
• ESD protection: Present
• Compliance: ROHS3, REACH Unaffected, EAR99

Variable Parameters (Allowable Differences):

• Resistance per channel (Ohms)
• Capacitance values (pF)
• Attenuation characteristics (dB)
• Product status (Active vs. Obsolete)
• Packaging format (Cut Tape vs. Tape & Reel)

The IP4252CZ8-4-TTL,13 qualifies as a substitute based on identical package geometry, filter topology, channel count, and compliance certifications, despite differences in resistance, capacitance, and attenuation values.

Parameter Comparison

Engineering Selection Recommendations

The IP4252CZ8-4-TTL,13 is the active substitute for the obsolete IP4251CZ8-4-TTL,13. Both components share identical package geometry, filter topology, channel configuration, and regulatory compliance certifications (ROHS3, REACH Unaffected, EAR99). The substitute maintains full mechanical and thermal compatibility with the original design footprint.

The primary differences between the main part and substitute are electrical parameter variations: the IP4252CZ8-4-TTL,13 features 40 Ohms resistance and 12pF capacitance per channel, compared to 100 Ohms and 10pF in the original. These parameter differences result in reduced attenuation (12dB versus 16dB at 800MHz ~ 3GHz). Component selection should be based on specific circuit requirements for impedance matching and attenuation performance.

The IP4252CZ8-4-TTL,13 is currently in active production status with higher inventory availability (5730 units) compared to the obsolete IP4251CZ8-4-TTL,13, supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the IP4252CZ8-4-TTL,13 be used as a direct replacement for the IP4251CZ8-4-TTL,13?

A: The IP4252CZ8-4-TTL,13 is mechanically and thermally compatible with identical package dimensions and mounting type. However, electrical parameters differ: resistance is 40 Ohms versus 100 Ohms, capacitance is 12pF versus 10pF, and attenuation is 12dB versus 16dB at 800MHz ~ 3GHz. Circuit-level compatibility depends on whether these electrical differences are acceptable for the application.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the IP4251CZ8-4-TTL,13 and IP4252CZ8-4-TTL,13 use the 8-UFDFN Exposed Pad package with dimensions of 0.067" L x 0.053" W (1.70mm x 1.35mm) and height of 0.022" (0.55mm). PCB footprints are identical.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) & Digi-Reel® is a smaller quantity packaging format suitable for manual assembly or low-volume production. Tape & Reel (TR) is a continuous reel format optimized for automated pick-and-place assembly in high-volume manufacturing. Both formats contain the same component; packaging selection depends on production volume and assembly methodology.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the IP4251CZ8-4-TTL,13 and IP4252CZ8-4-TTL,13 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the operating temperature range for these filters?

A: Both components operate across -40°C to 85°C, supporting industrial and commercial temperature environments.

Q: Do both parts include ESD protection?

A: Yes. Both the IP4251CZ8-4-TTL,13 and IP4252CZ8-4-TTL,13 include integrated ESD protection.