TE Connectivity AMP Connectors 794637-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 794637-4 is a Micro MATE-N-LOK rectangular connector header designed for surface mount applications. This connector features a 4-position, 2-row configuration with 0.118" (3.00mm) pitch spacing, gold-plated mating contacts, and tin-lead plated posts for solder termination. The connector is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and expanded inventory availability.

Substiute Parts

794637-4

TE Connectivity AMP ConnectorsIn Stock: 933794637-4 Datasheet

Current PartRFQ

3-794637-4

TE Connectivity AMP ConnectorsIn Stock: 42223-794637-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 794637-4 with the active equivalent 3-794637-4 is based on strict electrical and mechanical parameter equivalence. Both parts maintain identical specifications across all critical substitution criteria:

Electrical Parameters: Voltage rating (250V), operating temperature range (-40°C ~ 105°C), and current rating variability by wire gauge are identical.

Mechanical Parameters: Connector type (Header), contact type (Male Pin), number of positions (4), number of rows (2), pitch spacing (0.118" / 3.00mm), row spacing (0.118" / 3.00mm), mounting type (Surface Mount), termination method (Solder), and shrouding configuration (Shrouded - 4 Wall) are fully matched.

Material and Construction: Insulation material (Polyamide/Nylon), contact material (Brass), insulation height (0.364" / 9.25mm), contact shape (Square), and flammability rating (UL94 V-0) are equivalent.

Contact Finish: Both parts feature gold-plated mating contacts with 15.0µin (0.38µm) thickness. The post finish differs only in plating composition (tin-lead versus tin), with identical thickness specifications (100.0µin / 2.54µm).

The substitution is valid for all applications where the original 794637-4 was specified, with the added benefit of active product status and improved regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 3-794637-4 is the direct active equivalent for the obsolete 794637-4. Selection of the substitute part is based on the following engineering criteria:

Product Status: The original 794637-4 is classified as obsolete, making continued sourcing problematic for new production and long-term supply chain planning. The 3-794637-4 maintains active product status with TE Connectivity, ensuring ongoing availability and manufacturing support.

Regulatory Compliance: The substitute part 3-794637-4 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the substitute part satisfies these regulatory obligations. The substitute also carries REACH Unaffected status, providing improved environmental regulatory clarity compared to the vendor-undefined status of the original part.

Electrical and Mechanical Equivalence: All critical electrical parameters (voltage rating, operating temperature range, current rating methodology) and mechanical parameters (connector configuration, pitch spacing, mounting type, termination method) are identical between the two parts. The contact finish variation on the post (tin versus tin-lead) does not affect functional compatibility, as both finishes provide equivalent solder joint reliability at the specified thickness.

Inventory and Supply: The substitute part 3-794637-4 is available in significantly higher quantities (4124 pieces) compared to the original part (882 pieces), with active production status ensuring continued supply for future requirements.

For all new designs and production transitions, the 3-794637-4 is the appropriate selection. Existing designs using the 794637-4 can be transitioned to the 3-794637-4 without circuit or layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 3-794637-4 be used as a direct replacement for the 794637-4 in existing designs?

A: Yes. The 3-794637-4 is electrically and mechanically equivalent to the 794637-4 across all specified parameters. No circuit modifications, PCB layout changes, or connector interface adjustments are required. The parts are pin-compatible and functionally interchangeable.

Q: What is the difference between the tin-lead post finish on the 794637-4 and the tin post finish on the 3-794637-4?

A: Both finishes are applied at identical thickness (100.0µin / 2.54µm) and provide equivalent solder joint reliability. The tin finish on the substitute part reflects modern manufacturing practices and improved environmental compliance. The functional performance in solder termination applications is equivalent.

Q: Why is the 794637-4 listed as obsolete?

A: The 794637-4 is no longer in active production by TE Connectivity. The 3-794637-4 represents the current active equivalent in the Micro MATE-N-LOK series. For new designs and ongoing production, the active part number should be specified.

Q: What is the packaging difference between the two parts?

A: The original 794637-4 packaging specification is not provided in the available data. The 3-794637-4 is supplied in Cut Tape (CT) packaging. Confirm packaging requirements with your procurement or supply chain team for specific application needs.

Q: Are there any compliance advantages to using the 3-794637-4?

A: Yes. The 3-794637-4 is ROHS3 compliant and carries REACH Unaffected status, whereas the 794637-4 is RoHS non-compliant with vendor-undefined REACH status. For applications subject to RoHS directives or customer compliance requirements, the substitute part satisfies these regulatory obligations.

Q: What is the current rating for these connectors?

A: The current rating varies by wire gauge. Consult the connector datasheet or TE Connectivity technical documentation for specific current ratings corresponding to your wire gauge selection.

Q: Are these connectors suitable for high-temperature applications?

A: Both parts are rated for operating temperatures from -40°C to 105°C. For applications requiring operation outside this range, alternative connector series should be evaluated.

Q: What is the voltage rating for these connectors?

A: Both the 794637-4 and 3-794637-4 are rated for 250V. Confirm this rating is appropriate for your application voltage requirements.

Q: Can these connectors be used in applications requiring moisture protection?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited moisture tolerance. No special moisture protection measures are required for storage or handling.