TE Connectivity 644488-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644488-2 is a rectangular connector header, right-angle configuration, with 2 positions at 0.100" (2.54mm) pitch. This through-hole solder-terminated connector is designed for board-to-cable/wire applications with shrouded 4-wall construction and friction lock fastening. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing design and procurement requirements. Active substitute parts maintain functional compatibility while offering improved product status and compliance certifications.

Substiute Parts

644488-2

TE Connectivity AMP ConnectorsIn Stock: 906644488-2 Datasheet

Current PartRFQ

2-644488-2

TE Connectivity AMP ConnectorsIn Stock: 24872-644488-2 Datasheet

DirectRFQ

S2B-XH-A-1

JST Sales America Inc.In Stock: 52492S2B-XH-A-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 644488-2 are identified based on strict electrical and mechanical parameter compatibility. The primary substitution criteria include connector type (header), contact type (male pin), number of positions (2), mounting configuration (through-hole right-angle), shrouding style (shrouded 4-wall), and termination method (solder). Operating temperature range, voltage rating, and flammability certification establish the functional envelope for substitution.

Direct Equivalent (TE Connectivity 2-644488-2): This part maintains identical specifications across all critical parameters including pitch (0.100"/2.54mm), contact geometry, insulation height (0.343"/8.71mm), and operating temperature (-55°C ~ 105°C). The primary distinction is product status (active versus obsolete) and RoHS compliance (ROHS3 Compliant versus non-compliant). Contact finish differs from tin-lead to tin on both mating and post surfaces.

Similar Equivalent (JST S2B-XH-A-1): This part provides functional substitution with notable parameter variations. The pitch specification differs at 0.098" (2.50mm) versus 0.100" (2.54mm). Operating temperature range is reduced to -25°C ~ 85°C. Insulation height is lower at 0.240" (6.10mm). Contact material is brass rather than copper alloy. Fastening type changes from friction lock to detent lock. Termination includes press-fit capability in addition to solder. These variations require mechanical and thermal compatibility assessment for specific applications.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 2-644488-2 (Direct Substitute): This part is the primary recommended substitute for the obsolete 644488-2. It maintains complete electrical and mechanical compatibility with identical pitch (0.100"/2.54mm), contact geometry, insulation dimensions, and operating temperature range (-55°C ~ 105°C). The part is active in production status and carries ROHS3 compliance certification, addressing regulatory requirements for new designs. Contact finish specification changes from tin-lead to tin on both mating and post surfaces, which is compatible with standard solder assembly processes. This substitution requires no design modifications and provides direct form-fit-function replacement.

JST S2B-XH-A-1 (Similar Substitute): This part provides functional substitution for applications where pitch tolerance and thermal operating range permit deviation from the original specification. The 0.098" (2.50mm) pitch represents a 0.02mm (0.002") difference from the 0.100" (2.54mm) standard, which may be acceptable in applications with relaxed mechanical tolerances. The reduced operating temperature range (-25°C ~ 85°C) restricts use to applications not requiring the full -55°C ~ 105°C envelope of the original part. The lower insulation height (0.240" versus 0.343") affects board layout clearance requirements. This substitution is suitable for general-purpose applications with standard thermal and mechanical requirements and offers active product status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-644488-2 be used as a direct replacement for the 644488-2 without design changes?

A: Yes. The 2-644488-2 maintains identical pitch (0.100"/2.54mm), contact configuration, insulation height (0.343"/8.71mm), and operating temperature range (-55°C ~ 105°C). No design modifications are required for direct substitution. The part is active in production and ROHS3 compliant.

Q: What are the key differences between the TE Connectivity 2-644488-2 and the JST S2B-XH-A-1?

A: The primary differences are pitch specification (0.100" versus 0.098"), operating temperature range (-55°C ~ 105°C versus -25°C ~ 85°C), insulation height (0.343" versus 0.240"), contact material (copper alloy versus brass), fastening type (friction lock versus detent lock), and insulation material (polyester versus polyamide/nylon). These variations require application-specific compatibility assessment.

Q: Is the JST S2B-XH-A-1 suitable for applications requiring the full -55°C ~ 105°C operating temperature range?

A: No. The S2B-XH-A-1 has an operating temperature range of -25°C ~ 85°C, which does not cover the full -55°C ~ 105°C specification of the original 644488-2. This part is suitable only for applications operating within the -25°C ~ 85°C envelope.

Q: Does the pitch difference between 0.100" (2.54mm) and 0.098" (2.50mm) affect mechanical compatibility?

A: The 0.02mm pitch difference may affect mechanical fit depending on application tolerances. The JST S2B-XH-A-1 is designed for 0.098" (2.50mm) pitch mating, while the original 644488-2 and direct substitute 2-644488-2 are designed for 0.100" (2.54mm) pitch. Mechanical compatibility must be verified for specific board and connector designs.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the TE Connectivity 2-644488-2 and JST S2B-XH-A-1 carry ROHS3 compliance certification. The original 644488-2 is RoHS non-compliant, making the substitutes suitable for applications with RoHS regulatory requirements.

Q: What is the difference in contact finish between the original 644488-2 and the substitute parts?

A: The original 644488-2 uses tin-lead contact finish on both mating and post surfaces. Both substitute parts (2-644488-2 and S2B-XH-A-1) use tin contact finish. Tin finish is compatible with standard solder assembly processes and provides equivalent electrical performance.

Q: Can the S2B-XH-A-1 be used in applications requiring solder termination only?

A: Yes. While the S2B-XH-A-1 supports both press-fit and solder termination, it can be used in solder-only applications. The solder termination capability is identical to the original 644488-2 and direct substitute 2-644488-2.

Q: What is the inventory status of these substitute parts?

A: The TE Connectivity 2-644488-2 has 2467 pieces in stock. The JST S2B-XH-A-1 has 52396 pieces in stock. Both parts are active in production with established supply chains.