TE Connectivity 557785-1 Modular Connector: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 557785-1 is a modular jack connector designed for 8-position 8-contact (8p8c) RJ45 Ethernet applications. This connector features a 90° right-angle orientation, through-hole solder termination, and unshielded construction rated for Cat3 performance. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

557785-1

TE Connectivity AMP ConnectorsIn Stock: 777557785-1 Datasheet

Current PartRFQ

5557785-1

TE Connectivity AMP ConnectorsIn Stock: 13985557785-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 557785-1 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part 5557785-1 maintains identical specifications in the following key areas:

Electrical Parameters: Contact configuration (8p8c RJ45), performance rating (Cat3), contact material (phosphor bronze), and gold finish thickness (50.0µin / 1.27µm) are identical between the main part and substitute.

Mechanical Parameters: Connector type (jack), orientation (90° right-angle), mounting method (through-hole), termination type (solder), shielding (unshielded), housing material (polyamide/nylon), tab direction (down), and board guide feature are identical.

Environmental Parameters: Operating temperature range (-40°C to 85°C) and moisture sensitivity level (MSL 1 - Unlimited) are identical.

The primary distinction between the main part and substitute is product status (obsolete versus active) and RoHS compliance certification. The substitute part 5557785-1 is an active product with RoHS Compliant status, making it suitable for new designs and applications requiring current compliance documentation.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 5557785-1 is the direct equivalent for the obsolete TE Connectivity 557785-1 modular connector. Selection of the substitute part is based on the following engineering criteria:

Product Status: The main part 557785-1 carries an obsolete designation, indicating discontinued production and limited availability. The substitute part 5557785-1 maintains active product status with confirmed inventory availability (1301 pieces in stock), ensuring supply chain continuity for new designs and production requirements.

Compliance Certification: The substitute part 5557785-1 is RoHS Compliant, meeting current regulatory requirements for electronic components in regulated markets. The main part 557785-1 is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives. For applications requiring RoHS compliance documentation, the substitute part is the appropriate selection.

Electrical and Mechanical Equivalence: All functional parameters are identical between the main part and substitute, including contact configuration, orientation, termination method, shielding, performance rating, contact materials, and operating temperature range. Direct functional substitution is supported without circuit or mechanical redesign.

Packaging Consideration: The substitute part is supplied in tray packaging, which is standard for production quantities. The main part packaging specification is not provided. Tray packaging is suitable for automated assembly processes and high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the 5557785-1 substitute directly replace the 557785-1 in existing designs?

A: Yes. The 5557785-1 is electrically and mechanically identical to the 557785-1 across all specified parameters. Direct substitution is supported without design modifications. The connector maintains the same 8p8c RJ45 configuration, 90° right-angle orientation, through-hole solder termination, and Cat3 performance rating.

Q: What is the primary reason to transition from 557785-1 to 5557785-1?

A: The 557785-1 is classified as obsolete, indicating discontinued production. The 5557785-1 is an active product with confirmed inventory availability. Additionally, the 5557785-1 carries RoHS Compliant certification, which is required for applications subject to RoHS directives. The 557785-1 is RoHS non-compliant.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts are rated for Cat3 Ethernet performance and feature identical contact materials (phosphor bronze), contact finish (gold at 50.0µin / 1.27µm thickness), and operating temperature range (-40°C to 85°C).

Q: Does the packaging difference affect compatibility?

A: No. The packaging difference (tray for the substitute versus unspecified for the main part) affects only logistics and handling during manufacturing. The connector itself is identical. Tray packaging is standard for production environments and is compatible with automated assembly equipment.

Q: Are both parts suitable for the same environmental conditions?

A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C and carry the same MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What is the inventory status of each part?

A: The 557785-1 (obsolete) has 729 pieces in stock. The 5557785-1 (active) has 1301 pieces in stock. For new production and long-term supply assurance, the 5557785-1 is the recommended selection.

Q: Are there any compliance or regulatory differences?

A: Yes. The 5557785-1 is RoHS Compliant, while the 557785-1 is RoHS non-compliant. Both parts carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications. For applications requiring RoHS compliance documentation, the 5557785-1 is the appropriate choice.