TE Connectivity AMP Connectors 2-796644-1 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 2-796644-1 is a 21-position terminal block header with male pins, shrouded on four sides, featuring 0.197" (5.00mm) pitch and 90° right-angle orientation for through-hole mounting. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

2-796644-1

TE Connectivity AMP ConnectorsIn Stock: 12402-796644-1 Datasheet

Current PartRFQ

ELFH21220

Amphenol PCDIn Stock: 794ELFH21220 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 2-796644-1 is determined by the following critical parameters:

Primary Compatibility Criteria:

• 21-position configuration
• 90° right-angle header orientation
• Through-hole solder termination
• 15 A current rating (UL)
• 300 V voltage rating (UL)
• UL94 V-0 flammability rating
• Operating temperature range compatibility

Secondary Compatibility Considerations:

• Pitch tolerance (0.197" / 5.00mm nominal vs. 0.200" / 5.08mm)
• Shroud configuration (4-side vs. 2-side)
• Housing material composition
• Contact material specification
• Insulation height and contact tail length dimensions

The Amphenol PCD ELFH21220 meets the primary compatibility criteria with minor pitch variation (5.08mm vs. 5.00mm) and reduced shroud coverage (2-side vs. 4-side), representing a functional equivalent for applications where these dimensional differences are acceptable within PCB layout constraints.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 2-796644-1 (Obsolete): The original part is classified as obsolete and should not be selected for new designs. Existing inventory remains available for legacy system maintenance and repair applications where exact form-factor compatibility is required.

Amphenol PCD ELFH21220 (Active): The ELFH21220 is the recommended substitute for new applications and ongoing production. This part maintains active product status, ensuring long-term availability and supply chain continuity. Both components achieve UL94 V-0 flammability compliance and RoHS regulatory requirements. The ELFH21220 operates within a slightly reduced temperature range (-40°C to 105°C versus -110°C), which remains suitable for standard industrial and commercial applications. The 0.08mm pitch difference (5.08mm vs. 5.00mm) and reduced shroud coverage (2-side vs. 4-side) require PCB layout verification to confirm mechanical and electrical compatibility within specific design constraints.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol PCD ELFH21220 directly replace the TE Connectivity 2-796644-1 in existing designs?

A: Direct replacement requires PCB layout verification. The primary differences are pitch tolerance (5.08mm vs. 5.00mm), shroud configuration (2-side vs. 4-side), and contact tail length (3.94mm vs. 3.50mm). These dimensional variations may require minor PCB modifications depending on existing hole spacing and clearance specifications.

Q: What is the significance of the pitch difference between these parts?

A: The pitch difference of 0.08mm (5.08mm vs. 5.00mm) represents a 1.6% variation. This difference affects PCB hole spacing and connector alignment. PCB redesign or use of adapter solutions may be necessary if the original design tolerances do not accommodate this variation.

Q: How do the shroud configurations differ, and does this affect functionality?

A: The TE Connectivity 2-796644-1 features 4-side shrouding, while the Amphenol PCD ELFH21220 provides 2-side shrouding. Four-side shrouding offers enhanced EMI shielding and mechanical protection. Two-side shrouding reduces overall component height and may improve accessibility in space-constrained applications. Functional electrical performance remains equivalent.

Q: Are both parts RoHS compliant?

A: Yes. The TE Connectivity 2-796644-1 is ROHS3 compliant, and the Amphenol PCD ELFH21220 is RoHS compliant. Both parts meet current regulatory requirements for hazardous substance restrictions.

Q: What is the temperature operating range difference, and is it significant?

A: The TE Connectivity part operates from -40°C to 110°C, while the Amphenol part operates from -40°C to 105°C. The 5°C difference is negligible for most industrial and commercial applications. High-temperature applications requiring operation above 105°C would require the original TE Connectivity part or alternative components rated for higher temperatures.

Q: Do the different housing materials affect performance or reliability?

A: The TE Connectivity part uses Polyamide (PA66/Nylon 6/6), while the Amphenol part uses Polybutylene Terephthalate (PBT). Both materials achieve UL94 V-0 flammability ratings and provide equivalent electrical insulation properties. Material selection may affect chemical resistance and mechanical properties in specific environmental conditions; application-specific requirements should be evaluated.

Q: What is the significance of the contact material difference (Copper Alloy vs. Brass)?

A: Both Copper Alloy and Brass provide adequate electrical conductivity and corrosion resistance for terminal block applications. The contact mating finish (Tin) is identical on both parts, providing equivalent contact performance and reliability. Material selection does not affect electrical functionality for standard applications.

Q: Are there packaging differences between these parts?

A: The TE Connectivity 2-796644-1 packaging is not specified in available documentation. The Amphenol PCD ELFH21220 is supplied in Tray packaging. Packaging format may affect handling, storage, and integration into automated assembly processes.