TE Connectivity 644457-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644457-3 is a rectangular connector header, right-angle configuration, with 3 positions at 2.54mm pitch. This through-hole, solder-terminated component is designed for board-to-cable/wire applications in general-purpose circuits. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	3
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Termination	Solder
Operating Temperature Range	-55°C ~ 105°C
Voltage Rating	250VAC
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters: connector type (header), contact type (male pin), mating pitch (0.100" / 2.54mm), number of positions (3), number of rows (1), mounting type (through hole, right angle), and termination method (solder). All identified substitutes maintain these core specifications.

The substitute parts are grouped into two categories:

Direct Equivalent: Part 3-644457-3 is a direct TE Connectivity AMP Connectors equivalent from the same MTA-100 series, differing only in contact finish composition (tin versus tin-lead) and RoHS compliance status.

Functional Equivalents: Parts 929500-01-03, 929500-01-03-RK, 929550-01-03-EU, and 929550-01-03-I are 3M rectangular connectors from the 929 series. These maintain identical mating pitch, position count, row configuration, mounting type, and termination method. Variations exist in contact length specifications, insulation material composition, contact finish type, and fastening mechanism (push-pull versus standard).

Parameter Comparison

Parameter	644457-3	3-644457-3	929500-01-03	929500-01-03-RK	929550-01-03-EU	929550-01-03-I
Manufacturer	TE Connectivity	TE Connectivity	3M	3M	3M	3M
Series	MTA-100	MTA-100	929	929	929	929
Product Status	Obsolete	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	3	3	3	3	3	3
Number of Rows	1	1	1	1	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	0.260" (6.60mm)	0.260" (6.60mm)	0.295" (7.49mm)	0.295" (7.49mm)	0.295" (7.49mm)	0.295" (7.49mm)
Contact Length - Post	0.110" (2.79mm)	0.110" (2.79mm)	0.130" (3.30mm)	0.130" (3.30mm)	0.130" (3.30mm)	0.130" (3.30mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)
Contact Shape	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin-Lead	Tin	Tin-Lead	Tin	Gold	Gold
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	Non-compliant	Compliant	Non-compliant	Not specified	Not specified	Not specified
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not Applicable	Not Applicable	Not Applicable	Not Applicable

Engineering Selection Recommendations

Primary Recommendation: 3-644457-3

The 3-644457-3 is the optimal substitute for the obsolete 644457-3. Both components are manufactured by TE Connectivity AMP Connectors within the MTA-100 series and share identical electrical and mechanical specifications. The 3-644457-3 maintains the same operating temperature range (-55°C to 105°C), voltage rating (250VAC), and UL94 V-0 flammability certification. The primary distinction is RoHS compliance status; the 3-644457-3 is RoHS compliant, whereas the original part is non-compliant. Contact finish differs slightly (tin versus tin-lead), but both finishes provide equivalent electrical performance for general-purpose applications. The 3-644457-3 is currently in active production with substantial inventory availability (3472 units).

Secondary Recommendations: 3M 929 Series

The 3M rectangular connectors (929500-01-03, 929500-01-03-RK, 929550-01-03-EU, 929550-01-03-I) function as equivalent substitutes when the 3-644457-3 is unavailable. All four 3M parts maintain the critical parameters: 0.100" (2.54mm) mating pitch, 3-position single-row configuration, through-hole right-angle mounting, and solder termination. All carry UL94 V-0 flammability certification.

Differences from the original 644457-3 include:

Operating temperature minimum: 3M parts operate from -40°C (versus -55°C for the original). This represents a 15°C reduction in low-temperature capability.

Contact dimensions: 3M parts feature longer mating contacts (0.295" versus 0.260") and longer post contacts (0.130" versus 0.110"), resulting in increased insulation height (0.110" versus 0.100").

Fastening mechanism: 3M parts include push-pull fastening, whereas the original is unshrouded without fastening.

Contact finish options: 929500 series offers tin or tin-lead finishes; 929550 series provides gold finish.

Insulation material: 3M parts use PBT or PCT materials versus thermoplastic in the original.

Current rating: 3M parts specify 2.5A current rating; the original specifies current varies by wire gauge.

Selection among the 3M alternatives depends on application-specific requirements: 929500-01-03 for tin-lead finish, 929500-01-03-RK for tin finish with PCT insulation, 929550-01-03-EU for gold finish with PCT insulation, or 929550-01-03-I for gold finish with PBT insulation.

Frequently Asked Questions (FAQ)

Q: Can the 3-644457-3 be used as a direct replacement for the 644457-3?

A: Yes. The 3-644457-3 is a direct equivalent from the same manufacturer and series. Both components share identical connector type, contact type, mating pitch (2.54mm), position count (3), row configuration (1), mounting type (through-hole right-angle), termination method (solder), operating temperature range (-55°C to 105°C), voltage rating (250VAC), and flammability certification (UL94 V-0). The primary difference is RoHS compliance status; the 3-644457-3 is RoHS compliant.

Q: What are the key differences between the TE Connectivity MTA-100 series and the 3M 929 series?

A: The critical shared parameters are mating pitch (0.100" / 2.54mm), position count (3), row configuration (1), mounting type (through-hole right-angle), and termination (solder). Differences include contact dimensions (3M parts have longer mating and post contacts), operating temperature minimum (-40°C for 3M versus -55°C for TE), insulation material composition, contact finish options, and fastening mechanism (3M includes push-pull fastening).

Q: Are the 3M 929 series parts suitable for applications requiring -55°C operation?

A: No. The 3M 929 series parts are rated for -40°C minimum operating temperature, which is 15°C higher than the original 644457-3 specification of -55°C. Applications requiring operation below -40°C must use the TE Connectivity 3-644457-3 or 644457-3.

Q: What is the difference between the 929550-01-03-EU and 929550-01-03-I variants?

A: Both parts are from the 3M 929550 series with gold contact finish. The primary difference is insulation material: 929550-01-03-EU uses polycyclohexylenedimethylene terephthalate (PCT), while 929550-01-03-I uses polybutylene terephthalate (PBT) with polyester and glass filler. Both maintain identical electrical specifications, operating temperature range (-40°C to 105°C), and current rating (2.5A).

Q: How do contact finish options affect substitution compatibility?

A: Contact finish (tin-lead, tin, or gold) does not affect electrical compatibility for general-purpose applications. Selection depends on application requirements: tin-lead and tin finishes provide standard performance; gold finish offers enhanced corrosion resistance and is suitable for applications with extended shelf life or harsh environmental exposure. The original 644457-3 uses tin-lead finish; the 3-644457-3 uses tin finish; 3M 929500 series offers tin or tin-lead; 3M 929550 series provides gold finish.

Q: What packaging options are available for these substitute parts?

A: All identified substitute parts are supplied in bulk packaging. The original 644457-3 packaging specification is not provided in the technical data.

Q: Are there compliance or regulatory considerations when substituting these parts?

A: Yes. The original 644457-3 is RoHS non-compliant. The 3-644457-3 is RoHS compliant, making it suitable for applications subject to RoHS regulations. The 3M 929 series parts do not specify RoHS status in the provided data. REACH status varies: 929500-01-03 is REACH affected; 929500-01-03-RK and 929550 series are REACH unaffected. All parts carry ECCN classification EAR99 and HTSUS code 8536.69.4040.

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