TE Connectivity AMP Connectors 794490-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 794490-1 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 16 positions arranged in 2 rows, utilizing a 4.2mm (0.165") pitch configuration. The connector is classified as a shrouded 4-wall header with solder termination and locking ramp fastening, suitable for board-to-board or cable interconnection.

The 794490-1 carries an obsolete product status, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design compatibility, ensure supply chain continuity, and support legacy system maintenance and repair operations.

Substiute Parts

794490-1

TE Connectivity AMP ConnectorsIn Stock: 1093794490-1 Datasheet

Current PartRFQ

1-794490-1

TE Connectivity AMP ConnectorsIn Stock: 9151-794490-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 794490-1 rectangular connector header is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility Parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (16)
• Number of rows (2)
• Pitch - mating (0.165" / 4.20mm)
• Row spacing - mating (0.165" / 4.20mm)
• Mounting type (Through Hole)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Fastening type (Locking Ramp)
• Insulation height (0.504" / 12.80mm)
• Contact shape (Square)
• Insulation material (Polyamide / Nylon)

Electrical Compatibility Parameters:

• Operating temperature range (-55°C ~ 105°C)
• Voltage rating (600VAC)
• Material flammability rating (UL94 V-0)
• Contact material (Copper Alloy)

Substitute parts must maintain identical specifications across all listed parameters to ensure direct functional and mechanical interchangeability without design modification or circuit board rework.

Parameter Comparison

Engineering Selection Recommendations

The 1-794490-1 serves as a direct functional substitute for the obsolete 794490-1 rectangular connector header. Both parts maintain identical mechanical and electrical specifications across all critical parameters including connector type, position count, pitch, mounting configuration, and operating characteristics.

The primary distinction between these parts is product status and regulatory compliance. The 794490-1 is classified as obsolete with RoHS non-compliant status, while the 1-794490-1 is an active product with RoHS compliance certification. The contact finish differs between the two parts: the 794490-1 utilizes Tin-Lead plating, whereas the 1-794490-1 employs Tin plating. Both finishes maintain identical thickness specifications of 118.1µin (3.00µm).

For new designs and ongoing production applications, the 1-794490-1 is the appropriate selection due to its active product status and regulatory compliance. For legacy system maintenance where the original 794490-1 is no longer available, the 1-794490-1 provides complete mechanical and electrical interchangeability without circuit board modification or design rework.

Frequently Asked Questions (FAQ)

Q: Can the 1-794490-1 be used as a direct replacement for the 794490-1 in existing assemblies?

A: Yes. The 1-794490-1 is mechanically and electrically identical to the 794490-1 across all critical parameters. Both connectors feature identical pitch (0.165" / 4.20mm), position count (16), row configuration (2 rows), mounting type (through-hole), shrouding (4-wall), and operating specifications. Direct substitution is possible without circuit board modification.

Q: What is the difference in contact finish between these two parts?

A: The 794490-1 features Tin-Lead contact plating, while the 1-794490-1 uses Tin plating. Both finishes maintain the same thickness of 118.1µin (3.00µm). The Tin finish on the 1-794490-1 reflects RoHS compliance requirements. Both finishes provide equivalent electrical performance and contact reliability.

Q: Why is the 794490-1 listed as obsolete?

A: The 794490-1 has been discontinued by TE Connectivity AMP Connectors. The 1-794490-1 represents the current active product offering within the AMP-DUAC series for this connector configuration.

Q: Are there any compatibility issues when substituting the 1-794490-1 for the 794490-1?

A: No compatibility issues exist. The connectors are fully interchangeable. Mating connectors, circuit board layouts, and cable assemblies designed for the 794490-1 function identically with the 1-794490-1 without modification.

Q: What is the significance of RoHS compliance on the 1-794490-1?

A: RoHS compliance indicates the 1-794490-1 meets Restriction of Hazardous Substances regulations, restricting lead and other hazardous materials. This is relevant for applications subject to environmental and regulatory requirements. The 794490-1 is RoHS non-compliant due to its Tin-Lead contact finish.

Q: Can both parts be used interchangeably in the same production batch?

A: Yes. Both parts are mechanically and electrically equivalent and can be used interchangeably in production. However, documentation should reflect the specific part number used in each assembly for traceability and compliance purposes.

Q: What are the key mechanical parameters that ensure substitution compatibility?

A: Substitution compatibility is ensured by identical specifications in connector type (Header), contact type (Male Pin), position count (16), row count (2), pitch (0.165" / 4.20mm), row spacing (0.165" / 4.20mm), mounting type (Through Hole), shrouding (4-wall), termination (Solder), fastening type (Locking Ramp), insulation height (0.504" / 12.80mm), contact shape (Square), and insulation material (Polyamide/Nylon).

Q: What are the key electrical parameters that ensure substitution compatibility?

A: Electrical compatibility is ensured by identical operating temperature range (-55°C ~ 105°C), voltage rating (600VAC), material flammability rating (UL94 V-0), and contact material (Copper Alloy).