H5004T Equivalent & Substitute Parts

Part Overview

The H5004T is a LAN 10/100/1000 Base-T Pulse Transformer manufactured by Pulse Electronics, configured with 1CT:1CT Transmitter and 1CT:1CT Receiver windings in a surface mount package. This component is classified as Obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity. The H5004T provides isolation and signal conditioning for Gigabit Ethernet applications requiring transformer-based data interfaces.

Substiute Parts

H5004T

Pulse ElectronicsIn Stock: 1425H5004T Datasheet

Current PartRFQ

H5004NLT

Pulse ElectronicsIn Stock: 5706H5004NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The H5004NLT qualifies as a direct substitute for the H5004T based on the following critical parameters:

Matching Parameters:

• Manufacturer: Pulse Electronics (same source)
• Mounting Type: Surface Mount (identical form factor compatibility)
• Size / Dimension: 0.690" L x 0.480" W (17.53mm x 12.20mm) (identical footprint)
• Operating Temperature: 0°C ~ 70°C (identical range)
• Turns Ratio: 1:1 (functionally equivalent to 1CT:1CT configuration)
• HTSUS Classification: 8504.31.2000 (same commodity code)

Functional Equivalence: The H5004NLT is classified as an Isolation and Data Interface (Encapsulated) Pulse Transformer with 1:1 turns ratio, providing the same electrical isolation and signal conditioning function required in Gigabit Ethernet applications. The encapsulated design maintains compatibility with the original application requirements.

Parameter Comparison

Engineering Selection Recommendations

H5004NLT Selection Criteria:

The H5004NLT is the appropriate substitute for H5004T applications based on the following factors:

• Product Status: H5004NLT maintains Active status, ensuring long-term availability and manufacturing support, whereas H5004T is Obsolete.
• Compliance Improvement: H5004NLT is RoHS Compliant, addressing regulatory requirements that may apply to new designs or production batches.
• Footprint Compatibility: Identical PCB footprint (0.690" L x 0.480" W) and compatible height (0.227" vs. 0.217" maximum seated height) enable direct board-level substitution.
• Functional Equivalence: Both components provide 1:1 transformer isolation for Gigabit Ethernet data interfaces with identical operating temperature ranges.
• Moisture Sensitivity: H5004NLT specifies MSL 4 (72 Hours), requiring stricter handling protocols during storage and assembly compared to H5004T MSL 3 (168 Hours).

Frequently Asked Questions (FAQ)

Q: Can H5004NLT directly replace H5004T on existing PCBs?

A: Yes. Both components share identical footprint dimensions (0.690" L x 0.480" W) and compatible maximum seated heights (0.227" vs. 0.217"). No PCB redesign is required for substitution.

Q: What is the functional difference between the two transformers?

A: H5004T is specified as a LAN 10/100/1000 Base-T transformer with 1CT:1CT Transmitter and Receiver windings. H5004NLT is an Isolation and Data Interface (Encapsulated) transformer with 1:1 turns ratio. Both provide equivalent electrical isolation and signal conditioning for Gigabit Ethernet applications.

Q: Why does H5004NLT have a higher Moisture Sensitivity Level?

A: H5004NLT specifies MSL 4 (72 Hours) compared to H5004T MSL 3 (168 Hours). This indicates more stringent moisture absorption limits and requires adherence to shorter storage windows and controlled humidity conditions during handling and assembly.

Q: Is H5004NLT suitable for new designs?

A: Yes. H5004NLT maintains Active product status and RoHS Compliant certification, making it appropriate for new designs requiring regulatory compliance and long-term component availability.

Q: Are there any height clearance concerns?

A: H5004NLT maximum seated height is 0.227" compared to H5004T at 0.217", representing a 0.010" (0.25mm) increase. Verify clearance in applications with tight vertical constraints.