TE Connectivity 644894-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644894-2 is a rectangular connector header, right-angle configuration, with 2 positions at 0.100" (2.54mm) pitch. This through-hole, shrouded connector is designed for board-to-cable/wire applications in general purpose and lighting circuits. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design and procurement requirements. Active alternatives with compatible electrical and mechanical parameters are available to support continued system deployment and maintenance.

Substiute Parts

644894-2

TE Connectivity AMP ConnectorsIn Stock: 1094644894-2 Datasheet

Current PartRFQ

3-644894-2

TE Connectivity AMP ConnectorsIn Stock: 10293-644894-2 Datasheet

DirectRFQ

S2B-XH-A-1

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TE Connectivity 644894-2 is based on the following critical parameters that determine functional and mechanical compatibility:

Direct Equivalent Criteria:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (2)
• Number of rows (1)
• Pitch - mating (0.100" / 2.54mm)
• Mounting type (Through Hole, Right Angle)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Voltage rating (250VAC minimum)
• Operating temperature range (-55°C ~ 105°C minimum)
• Material flammability rating (UL94 V-0)

Similar Substitute Criteria: Parts meeting the above criteria with minor variations in pitch tolerance (within 0.002"), insulation material composition, contact material alternatives, or operating temperature range adjustments are classified as similar substitutes. These parts maintain functional compatibility while offering alternative manufacturing sources or improved compliance status.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent: 3-644894-2

The TE Connectivity 3-644894-2 is the direct equivalent to the obsolete 644894-2. Both parts share identical electrical and mechanical specifications, including pitch (0.100" / 2.54mm), position count (2), mounting configuration (through-hole right-angle), and operating temperature range (-55°C ~ 105°C). The 3-644894-2 maintains active product status and carries RoHS Compliant certification, providing regulatory compliance advantage over the original obsolete part. Contact finish differs only in lead content (Tin vs. Tin-Lead), reflecting modern manufacturing standards. This part is the primary selection for direct replacement in new designs and legacy system updates.

Similar Substitute: S2B-XH-A-1

The JST Sales America S2B-XH-A-1 serves as a similar substitute when direct equivalents are unavailable or when alternative sourcing is required. This part maintains core functional compatibility through identical connector type, contact type, position count, row configuration, mounting style, and shrouding. The pitch specification of 0.098" (2.50mm) represents a 0.002" tolerance variation from the original 0.100" (2.54mm), which falls within standard connector manufacturing tolerances. The S2B-XH-A-1 offers enhanced termination flexibility through press-fit and solder options, detent lock fastening, and ROHS3 compliance. Operating temperature range is reduced to -25°C ~ 85°C, and insulation material differs (Polyamide/Nylon 6/6 vs. Polyester). Current rating is specified at 3A. This substitute is suitable for applications where the reduced temperature range and material composition are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 3-644894-2 be used as a direct replacement for the 644894-2?

A: Yes. The 3-644894-2 is a direct equivalent with identical electrical and mechanical specifications. Both parts feature 2 positions at 0.100" (2.54mm) pitch, through-hole right-angle mounting, shrouded 4-wall configuration, and -55°C ~ 105°C operating temperature range. The primary difference is product status (active vs. obsolete) and RoHS compliance certification.

Q: What are the key differences between the 644894-2 and the S2B-XH-A-1?

A: The S2B-XH-A-1 differs in pitch specification (0.098" vs. 0.100"), insulation material (Polyamide/Nylon 6/6 vs. Polyester), contact material (Brass vs. Copper Alloy), operating temperature range (-25°C ~ 85°C vs. -55°C ~ 105°C), insulation height (0.240" vs. 0.313"), and fastening type (Detent Lock vs. Friction Lock). Pitch tolerance variation of 0.002" is within standard manufacturing specifications.

Q: Is the S2B-XH-A-1 suitable for applications requiring -55°C operation?

A: No. The S2B-XH-A-1 operating temperature range is -25°C ~ 85°C, which does not meet the -55°C minimum requirement of the original 644894-2. Applications requiring extended low-temperature operation must use the 3-644894-2 or equivalent parts with -55°C ~ 105°C rating.

Q: What is the impact of the pitch tolerance difference between 0.100" and 0.098"?

A: The 0.002" pitch tolerance variation is within standard connector manufacturing tolerances. However, mating with connectors designed specifically for 0.100" (2.54mm) pitch may result in loose or tight fit conditions. Mechanical compatibility must be verified for the specific mating connector in the application.

Q: Are all substitute parts RoHS compliant?

A: The 3-644894-2 is RoHS Compliant. The S2B-XH-A-1 is ROHS3 Compliant. The original 644894-2 has RoHS status listed as Not applicable, reflecting its obsolete classification prior to current RoHS requirements.

Q: Can the S2B-XH-A-1 be soldered using the same process as the 644894-2?

A: The S2B-XH-A-1 supports both press-fit and solder termination methods, providing process flexibility. Solder termination is compatible with standard through-hole soldering processes. However, the press-fit option offers an alternative assembly method not available with the original part.

Q: What is the current rating difference between the parts?

A: The 644894-2 and 3-644894-2 specify current rating as "Varies by Wire Gauge," indicating current capacity is dependent on the wire gauge used in the application. The S2B-XH-A-1 specifies a fixed current rating of 3A. For applications requiring current capacity verification, wire gauge and specific application parameters must be evaluated.

Q: Are there packaging differences between the substitute parts?

A: The 644894-2 packaging is not specified in available data. The 3-644894-2 is supplied in Bulk packaging. The S2B-XH-A-1 is supplied in Bulk packaging. Packaging format should be confirmed with supplier specifications for procurement requirements.