P0421T Common Mode Choke Equivalent & Substitute Parts

Part Overview

The P0421T is a 2-line common mode choke (CMC) surface mount component manufactured by Pulse Electronics, rated for 3.3A maximum current with 60mOhm DC resistance. This component is designed for power line filtering applications in surface mount configurations.

The P0421T carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

P0421T

Pulse ElectronicsIn Stock: 844P0421T Datasheet

Current PartRFQ

P0421NLT

Pulse ElectronicsIn Stock: 3068P0421NLT Datasheet

DirectRFQ

P0420NLT

Pulse ElectronicsIn Stock: 9966P0420NLT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P0421T are identified based on strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

• Number of Lines: 2
• Current Rating (Max): 3.3A
• DC Resistance (Max): 60mOhm
• Mounting Type: Surface Mount
• Physical Dimensions: 0.770" L x 0.670" W (19.56mm x 17.02mm)
• Height (Max): 0.390" (9.91mm)
• Package / Case: Horizontal, 4 PC Pad
• Operating Temperature Range: -40°C to 120°C
• Filter Type: Power Line

The substitute parts P0421NLT and P0420NLT match all critical electrical and mechanical parameters with the P0421T. Both substitutes maintain identical current ratings, DC resistance specifications, physical dimensions, and thermal operating ranges. The primary differences are product status (active versus obsolete) and packaging format (Tape & Reel versus standard packaging).

Parameter Comparison

Engineering Selection Recommendations

Both P0421NLT and P0420NLT are direct functional equivalents to the P0421T, with all critical electrical and mechanical parameters matching exactly. Selection between these substitutes should be based on the following factors:

Product Status: P0421NLT and P0420NLT both carry active product status, ensuring ongoing manufacturer support and availability, whereas P0421T is obsolete.

Regulatory Compliance: P0421NLT and P0420NLT are ROHS3 compliant, providing superior compliance posture compared to the non-compliant P0421T. Both maintain REACH Unaffected status consistent with the original part.

Packaging Considerations: P0421NLT and P0420NLT are supplied in Tape & Reel format, which is standard for high-volume production environments. The original P0421T packaging format differs only in delivery method and does not affect electrical or mechanical performance.

Inventory Availability: P0420NLT offers the highest current inventory level at 9,897 pieces, followed by P0421NLT at 2,986 pieces, compared to 764 pieces of the obsolete P0421T.

Frequently Asked Questions (FAQ)

Q: Can P0421NLT and P0420NLT be used interchangeably with P0421T?

A: Yes. Both P0421NLT and P0420NLT are parametric equivalents to P0421T. All critical specifications including current rating (3.3A), DC resistance (60mOhm), physical dimensions, thermal operating range, and package configuration are identical. The components are functionally interchangeable in circuit applications.

Q: What is the difference between P0421NLT and P0420NLT?

A: Both parts are parametrically identical across all electrical and mechanical specifications. The primary distinction is inventory availability, with P0420NLT currently stocked at higher quantities. Both are active products supplied in Tape & Reel packaging format.

Q: Why is the P0421T marked as obsolete?

A: The P0421T carries obsolete product status as designated by the manufacturer. P0421NLT and P0420NLT represent the current active alternatives that maintain full electrical and mechanical compatibility.

Q: Does the Tape & Reel packaging affect component performance?

A: No. Tape & Reel packaging is a delivery and handling format used for automated assembly processes. It does not alter the electrical characteristics, mechanical properties, or performance of the component itself.

Q: Are there any compliance differences between these parts?

A: P0421NLT and P0420NLT are ROHS3 compliant, whereas P0421T is RoHS non-compliant. All three parts maintain REACH Unaffected status. For applications requiring RoHS compliance, P0421NLT or P0420NLT must be selected.

Q: What are the key parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching: number of lines (2), current rating (3.3A), DC resistance (60mOhm), mounting type (surface mount), physical dimensions (0.770" x 0.670"), height (0.390"), package configuration (Horizontal, 4 PC Pad), and operating temperature range (-40°C to 120°C).