H5004 LAN Transformer Module - Equivalent & Substitute Parts

Part Overview

The H5004 is a single gigabit LAN transformer module manufactured by Pulse Electronics, designed for 1000 Base-T Ethernet applications. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations. The H5004 functions as a pulse transformer with a 1CT:1CT turns ratio configuration, packaged in a 24-pin SOIC surface mount format. Due to its obsolete status, direct replacement with active alternatives is necessary for procurement and long-term component availability.

Substiute Parts

H5004

Pulse ElectronicsIn Stock: 899H5004 Datasheet

Current PartRFQ

H5004NL

Pulse ElectronicsIn Stock: 2173H5004NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H5004 is determined by strict alignment with the following critical parameters:

• Transformer Type: LAN 1000 Base-T (gigabit Ethernet application requirement)
• Turns Ratio: 1CT:1CT (signal impedance matching specification)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Package Configuration: 24-pin SOIC (footprint and pin count compatibility)
• Physical Dimensions: 0.690" L x 0.480" W (board layout constraint)
• Operating Temperature Range: 0°C ~ 70°C (thermal operating envelope)

The H5004NL meets all substitution criteria as a direct equivalent from the same manufacturer with identical functional specifications and compatible physical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The H5004NL is the direct substitute for the obsolete H5004. Selection of H5004NL is based on the following engineering factors:

Product Status: The H5004 is obsolete with no ongoing manufacturing. The H5004NL is actively produced by Pulse Electronics, ensuring long-term component availability and supply chain continuity.

Compliance Status: The H5004NL achieves ROHS3 compliance, meeting current regulatory requirements for electronic components in most markets. The original H5004 is RoHS non-compliant, which may restrict its use in new designs or applications subject to RoHS directives.

Functional Equivalence: Both parts share identical transformer specifications (LAN 1000 Base-T, 1CT:1CT turns ratio), mounting type (surface mount), package configuration (24-pin SOIC), and physical footprint (0.690" x 0.480"), ensuring direct PCB compatibility without layout modifications.

Physical Compatibility: The H5004NL height of 0.227" is 0.008" lower than the H5004 at 0.235", which is within typical PCB assembly tolerances and does not impact clearance or mechanical fit in standard applications.

Moisture Handling: The H5004NL specifies MSL 4 (72 hours) compared to the H5004's MSL 3 (168 hours). This requires stricter moisture control during storage and handling but is standard for modern surface mount components.

Frequently Asked Questions (FAQ)

Q: Can H5004NL be used as a direct replacement for H5004 in existing designs?

A: Yes. The H5004NL is functionally and physically equivalent to the H5004. Both components have identical transformer specifications, turns ratios, mounting types, and PCB footprints. No circuit modifications or PCB layout changes are required.

Q: What is the difference between H5004 and H5004NL?

A: The H5004NL is the active production variant of the obsolete H5004. Key differences include: H5004NL is actively manufactured (H5004 is obsolete), H5004NL is ROHS3 compliant (H5004 is non-compliant), H5004NL has a lower seated height (0.227" vs 0.235"), H5004NL has stricter moisture sensitivity (MSL 4 vs MSL 3), and H5004NL is supplied in tube packaging (H5004 in bulk).

Q: Are there any compatibility concerns with the height difference?

A: No. The H5004NL height of 0.227" is 0.008" lower than the H5004. This minor difference is within standard PCB assembly tolerances and does not affect component clearance, connector alignment, or mechanical fit in typical applications.

Q: What does MSL 4 (72 hours) mean for H5004NL?

A: MSL 4 indicates the component must be used within 72 hours of opening the moisture barrier bag. This requires proper storage in dry conditions and adherence to standard moisture control procedures during assembly. This is standard practice for modern surface mount components.

Q: Is H5004NL RoHS compliant?

A: Yes. H5004NL is ROHS3 compliant, meeting current regulatory requirements. The original H5004 is RoHS non-compliant. For applications subject to RoHS directives, H5004NL is the required choice.

Q: What packaging formats are available?

A: H5004 is supplied in bulk packaging. H5004NL is supplied in tube packaging, which provides better component protection and is standard for active production parts.