TE Connectivity 4-103759-0 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-103759-0 is a rectangular connector header manufactured under the AMPMODU Mod II series. This component is a through-hole, right-angle mounted header with 40 positions at 0.100" (2.54mm) pitch, designed for board-to-board or cable interconnection applications. The part features male pin contacts with tin-lead plating and operates across a temperature range of -65°C to 105°C with a current rating of 3A per contact.

The 4-103759-0 carries an obsolete product status. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector specification.

Substiute Parts

4-103759-0

TE Connectivity AMP ConnectorsIn Stock: 10984-103759-0 Datasheet

Current PartRFQ

9-103759-0

TE Connectivity AMP ConnectorsIn Stock: 30559-103759-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-103759-0 is determined by strict equivalence across the following critical parameters:

• Connector Type and Contact Configuration: Header with male pin contacts, breakaway design
• Position Count and Pitch: 40 positions at 0.100" (2.54mm) mating pitch
• Mounting Geometry: Through-hole, right-angle orientation with identical contact lengths (mating: 0.230", post: 0.090")
• Electrical Performance: 3A current rating per contact, operating temperature range -65°C to 105°C
• Physical Dimensions: Insulation height of 0.138" (3.50mm), square contact shape
• Material and Certification: Copper alloy contacts, thermoplastic insulation, UL94 V-0 flammability rating
• Termination Method: Solder termination with push-pull fastening

The substitute part 9-103759-0 maintains full electrical and mechanical compatibility with the original 4-103759-0 specification across all critical parameters. Differences in contact finish plating (tin-lead versus tin) and product status (obsolete versus active) do not affect functional interchangeability within the specified operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The 9-103759-0 serves as the direct substitute for the obsolete 4-103759-0 within the AMPMODU Mod II connector family. Both parts maintain identical electrical and mechanical specifications across all critical parameters including position count, pitch, contact geometry, current rating, and operating temperature range.

The primary distinction between these parts is product status and regulatory compliance. The 4-103759-0 is classified as obsolete and carries RoHS non-compliant status. The 9-103759-0 is an active product with RoHS compliant certification, making it the appropriate selection for new designs and ongoing production support.

Contact finish composition differs between the two parts: the 4-103759-0 features tin-lead plating while the 9-103759-0 uses tin plating. Both finishes maintain the same thickness specification of 100.0µin (2.54µm) and are compatible with standard solder termination processes. This difference reflects the transition from lead-based to lead-free manufacturing standards.

For applications requiring the exact tin-lead contact finish of the original 4-103759-0, the 9-103759-0 remains functionally equivalent within the operating parameters specified for this connector category. The tin plating provides equivalent electrical conductivity and contact reliability across the -65°C to 105°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 9-103759-0 be used as a direct replacement for the 4-103759-0 in existing assemblies?

A: Yes. The 9-103759-0 is electrically and mechanically equivalent to the 4-103759-0 across all critical parameters. Both parts share identical position count (40), pitch (0.100"), contact geometry, current rating (3A), and operating temperature range (-65°C to 105°C). The parts are interchangeable within the specified connector interface.

Q: What is the difference between the tin-lead finish on the 4-103759-0 and the tin finish on the 9-103759-0?

A: Both finishes maintain the same thickness of 100.0µin (2.54µm) and provide equivalent electrical performance. The tin finish on the 9-103759-0 reflects compliance with lead-free manufacturing standards. Both finishes are compatible with standard solder termination processes and deliver equivalent contact reliability across the operating temperature range.

Q: Why is the 4-103759-0 listed as obsolete?

A: The 4-103759-0 carries obsolete product status due to its RoHS non-compliant classification and the industry transition to lead-free connector manufacturing. The 9-103759-0 represents the current active product offering within the AMPMODU Mod II series with equivalent specifications and RoHS compliant certification.

Q: Are there any packaging differences between the 4-103759-0 and 9-103759-0?

A: The 9-103759-0 is supplied in bulk packaging. Both parts are identical in connector specification and electrical performance. Packaging format does not affect functional compatibility or interchangeability.

Q: What are the key parameters that determine substitution compatibility for this connector?

A: Substitution compatibility is determined by equivalence across connector type (header, breakaway), contact type (male pin), position count (40), mating pitch (0.100"), mounting type (through-hole, right-angle), contact lengths (mating: 0.230", post: 0.090"), insulation height (0.138"), current rating (3A), operating temperature range (-65°C to 105°C), and material certifications (UL94 V-0). The 9-103759-0 maintains full equivalence across all these parameters.

Q: Is the 9-103759-0 suitable for new product designs?

A: Yes. The 9-103759-0 is an active product with RoHS compliant certification, making it the appropriate selection for new designs. It provides equivalent electrical and mechanical performance to the obsolete 4-103759-0 while meeting current regulatory requirements.