TTC-8135 Equivalent & Substitute Parts Reference

Part Overview

The TTC-8135 is a LAN 1000 Base-T Pulse Transformer manufactured by Tamura, designed for Gigabit Ethernet applications. This component features a 1CT:1CT turns ratio configuration in a 24-SOIC surface mount package. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where legacy component compatibility is required.

Substiute Parts

TTC-8135

TamuraIn Stock: 1226TTC-8135 Datasheet

Current PartRFQ

H5004NL

Pulse ElectronicsIn Stock: 2173H5004NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TTC-8135 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Transformer Type: LAN 1000 Base-T
• Turns Ratio: 1CT:1CT
• Mounting Type: Surface Mount
• Package Type: 24-SOIC
• Physical Dimensions: 0.690" L x 0.480" W (17.53mm x 12.20mm)
• Operating Temperature Range: 0°C ~ 70°C

The H5004NL from Pulse Electronics satisfies all mandatory substitution criteria. Both components share identical transformer classification, turns ratio configuration, surface mount technology, package format, and dimensional specifications. Operating temperature ranges are equivalent across both parts.

Parameter Comparison

Engineering Selection Recommendations

H5004NL as Direct Substitute for TTC-8135:

The H5004NL qualifies as a functional equivalent for the TTC-8135 based on matching transformer specifications, identical turns ratio, compatible package format, and equivalent operating temperature range. The H5004NL maintains active product status with current manufacturing availability, addressing the obsolescence limitation of the TTC-8135.

Compliance Considerations:

The H5004NL carries ROHS3 compliance certification and REACH unaffected status, providing regulatory alignment for applications subject to environmental standards. The TTC-8135 compliance documentation is not specified in available parameters.

Physical Integration:

The H5004NL seated height of 0.227" (5.76mm) is lower than the TTC-8135 maximum height of 0.250" (6.35mm). This dimensional difference is compatible with standard PCB layouts designed for the TTC-8135, as the substitute component requires less vertical clearance.

Moisture Handling:

The H5004NL carries MSL 4 classification (72-hour floor life), compared to the TTC-8135 MSL 1 (unlimited). Applications utilizing the H5004NL require adherence to moisture sensitivity handling protocols during storage and assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the H5004NL directly replace the TTC-8135 in existing designs?

A: Yes. The H5004NL matches all critical electrical and mechanical parameters: LAN 1000 Base-T transformer type, 1CT:1CT turns ratio, 24-SOIC package, and identical physical footprint dimensions of 0.690" L x 0.480" W. PCB layouts designed for the TTC-8135 accommodate the H5004NL without modification.

Q: What is the significance of the height difference between these components?

A: The H5004NL seated height of 0.227" is 0.023" lower than the TTC-8135 maximum height of 0.250". This difference is not a compatibility issue; the lower profile of the H5004NL provides additional clearance margin in space-constrained applications.

Q: How does the MSL rating difference affect component selection?

A: The TTC-8135 carries MSL 1 (unlimited floor life), while the H5004NL carries MSL 4 (72-hour floor life). MSL 4 components require controlled storage conditions and must be used within 72 hours of package opening. Manufacturing processes must incorporate moisture sensitivity protocols for the H5004NL.

Q: Is the H5004NL suitable for applications requiring RoHS compliance?

A: Yes. The H5004NL is ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for applications subject to these standards.

Q: Are there any electrical performance differences between the TTC-8135 and H5004NL?

A: Both components share identical transformer type classification, turns ratio configuration, and operating temperature range. Electrical performance parameters are equivalent for LAN 1000 Base-T applications.

Q: What is the current availability status of these components?

A: The TTC-8135 is classified as obsolete with limited inventory. The H5004NL is actively manufactured by Pulse Electronics with current production availability, making it the recommended selection for new designs and ongoing system support.