TE Connectivity AMP Connectors 644273-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644273-2 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 15 positions at 0.156" (3.96mm) pitch, shrouded design with single wall protection, and solder termination. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design and procurement requirements. The connector operates across a temperature range of -55°C to 105°C and maintains a 600VAC voltage rating suitable for general purpose and industrial applications.

Substiute Parts

644273-2

TE Connectivity AMP ConnectorsIn Stock: 1151644273-2 Datasheet

Current PartRFQ

0026481151

MolexIn Stock: 8730026481151 Datasheet

SimilarRFQ

0026482153

MolexIn Stock: 7860026482153 Datasheet

SimilarRFQ

0026503169

MolexIn Stock: 10520026503169 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644273-2 is determined by alignment of critical electrical and mechanical parameters. The primary substitution criteria include:

Critical Matching Parameters:

• Pitch - Mating: 0.156" (3.96mm)
• Number of Positions: 15 (primary) or 16 (limited compatibility)
• Connector Type: Header with Male Pin contacts
• Mounting Type: Through Hole
• Termination: Solder
• Contact Shape: Square
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Substitution Categories:

Category 1 - Direct Functional Equivalents (15-Position): Molex part numbers 0026481151 and 0026482153 provide direct substitution for the 644273-2. Both maintain the 15-position configuration, 0.156" pitch, through-hole solder termination, and square contact geometry. These parts are active products with current manufacturing status, ensuring long-term availability. Both comply with ROHS3 and UL94 V-0 flammability requirements.

Category 2 - Position-Variant Substitute (16-Position): Molex part number 0026503169 offers a 16-position configuration at identical 0.156" pitch. This part accommodates 15 loaded positions, providing functional compatibility for applications requiring the 644273-2 specification while offering one additional position capacity. This part is active and ROHS3 compliant.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Molex 0026482153: The Molex 0026482153 represents the closest functional equivalent to the TE Connectivity 644273-2. This part maintains identical shrouding configuration (Shrouded - 1 Wall), matching the mechanical envelope and PCB layout requirements of the original design. Both parts feature square contact geometry, 0.156" pitch, and 15-position configuration. The 0026482153 is an active product with established manufacturing and supply chain support. ROHS3 compliance and UL94 V-0 flammability rating align with the original specification. The contact post length differential (0.172" versus 0.125") requires PCB design verification for through-hole depth compatibility.

Secondary Substitute - Molex 0026481151: The Molex 0026481151 provides functional substitution with identical electrical and pitch specifications. This part differs in shrouding configuration (Unshrouded versus Shrouded - 1 Wall), resulting in a reduced mechanical envelope. Selection of this part is appropriate for applications where shrouding is not a design requirement or where space constraints favor the unshrouded design. ROHS3 compliance and UL94 V-0 rating are maintained. The contact post length (0.172") requires PCB verification.

Position-Variant Substitute - Molex 0026503169: The Molex 0026503169 accommodates applications requiring additional connector capacity. This 16-position header with 15 loaded positions maintains pitch and contact specifications while providing one spare position. This part is suitable for designs where future expansion or design flexibility is beneficial. The unshrouded configuration and contact post length differential require design review.

All substitute parts maintain ROHS3 compliance, UL94 V-0 flammability rating, and EAR99 export classification consistent with the original specification.

Frequently Asked Questions (FAQ)

Q: Can Molex 0026481151 directly replace TE Connectivity 644273-2 in existing PCB designs?

A: Functional replacement is possible with design verification. The primary difference is shrouding configuration (unshrouded versus shrouded). The contact post length is 0.172" compared to the original 0.125", requiring confirmation that PCB through-hole depth accommodates the longer post. Electrical and pitch specifications are identical.

Q: What is the significance of the contact post length difference between the original part and substitute parts?

A: The TE Connectivity 644273-2 features a 0.125" contact post length, while all Molex substitutes provide 0.172" post length. This 0.047" difference affects PCB through-hole depth requirements. PCB designs must accommodate the longer post to prevent contact protrusion issues or insufficient solder joint formation.

Q: Is Molex 0026482153 suitable for applications requiring shrouded connector design?

A: Yes. The Molex 0026482153 maintains the Shrouded - 1 Wall configuration identical to the TE Connectivity 644273-2, providing equivalent mechanical protection and PCB layout compatibility. This part is the recommended substitute for designs where shrouding is a functional requirement.

Q: Can the 16-position Molex 0026503169 be used in place of the 15-position TE Connectivity 644273-2?

A: The Molex 0026503169 provides functional compatibility for applications using 15 of the 16 available positions. The additional position capacity does not compromise performance for 15-position applications. However, the unshrouded design differs from the original shrouded configuration, requiring design review for mechanical envelope and protection requirements.

Q: Are all substitute parts ROHS3 compliant and UL94 V-0 rated?

A: Yes. All three Molex substitute parts (0026481151, 0026482153, and 0026503169) maintain ROHS3 compliance and UL94 V-0 flammability rating, consistent with the original TE Connectivity 644273-2 specification.

Q: What is the difference between the Molex 0026481151 and 0026482153 substitutes?

A: Both parts maintain 15-position configuration and 0.156" pitch. The primary differences are shrouding configuration and contact finish. The 0026481151 is unshrouded with tin contact finish on mating surfaces. The 0026482153 is shrouded with gold contact finish on mating surfaces (20.0µin thickness). Selection depends on design requirements for shrouding and contact finish specifications.

Q: Are voltage and current ratings specified for the Molex substitute parts?

A: Voltage and current ratings are not provided in the technical data for the Molex substitute parts. The original TE Connectivity 644273-2 specifies 600VAC voltage rating and current rating that varies by wire gauge. Design applications requiring specific voltage or current verification should reference complete manufacturer datasheets for the selected substitute part.

Q: What is the inventory status of substitute parts?

A: Molex 0026481151 has 827 pieces in stock, Molex 0026482153 has 760 pieces in stock, and Molex 0026503169 has 954 pieces in stock. All parts are active products with established supply availability.