TE Connectivity 3-644763-5 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-644763-5 is a rectangular connector header for through-hole mounting with 5 positions at 0.156" (3.96mm) pitch. This connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. The MTA-156 series connector features unshrouded male pin contacts with solder termination, suitable for board-to-cable/wire applications in general purpose and industrial environments.

Key Parameters

Parameter	Value
Manufacturer Part Number	3-644763-5
Manufacturer	TE Connectivity AMP Connectors
Series	MTA-156
Product Status	Obsolete
Connector Type	Header
Contact Type	Male Pin
Number of Positions	5
Pitch - Mating	0.156" (3.96mm)
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Shrouding	Unshrouded
Contact Shape	Square
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Contact Material	Copper Alloy
Insulation Material	Thermoplastic
Operating Temperature	-55°C ~ 105°C
Voltage Rating	600VAC
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 3-644763-5 is determined by the following critical parameters:

Primary Matching Criteria:

Number of Positions: 5
Pitch - Mating: 0.156" (3.96mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Operating Temperature Range: -55°C ~ 105°C
Material Flammability Rating: UL94 V-0

Secondary Compatibility Factors:

Contact Shape: Square
Number of Rows: 1
Shrouding: Unshrouded
RoHS Compliance Status

Substitute parts are grouped into two categories based on application style and contact length specifications:

Category 1: Board-to-Board Connectors (FWJ and HFWJ Series) These Samtec connectors maintain the core electrical and mechanical parameters while offering active product status. The FWJ series provides standard performance, while the HFWJ series offers high-temperature insulation material (Liquid Crystal Polymer) with specified current ratings.

Category 2: Flex Stack Spacer Connectors (JW Series) These Samtec connectors provide variable stack heights for applications requiring specific board-to-board spacing. All JW series variants maintain the 5-position, 0.156" pitch configuration with through-hole solder termination.

Parameter Comparison

Parameter	3-644763-5 (Main)	FWJ-05-01-T-S	FWJ-05-02-T-S	HFWJ-05-01-T-S	HFWJ-05-02-T-S	JW-05-04-T-S-460-140
Manufacturer	TE Connectivity	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Positions	5	5	5	5	5	5
Pitch - Mating	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)
Number of Rows	1	1	1	1	1	1
Connector Type	Header	Header	Header	Header	Header	Header Spacer
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Square	Square	N/A
Contact Finish - Mating	Gold	Tin	Tin	Tin	Tin	Tin
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	N/A
Insulation Material	Thermoplastic	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	N/A
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	N/A
Voltage Rating	600VAC	600VAC, 845VDC	600VAC, 845VDC	Not Specified	Not Specified	N/A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	N/A
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Specified	Not Specified	N/A
Contact Length - Mating	0.400" (10.16mm)	0.450" (11.43mm)	0.500" (12.70mm)	0.450" (11.43mm)	0.500" (12.70mm)	0.140" (3.556mm)
Overall Contact Length	0.700" (17.78mm)	0.750" (19.05mm)	0.800" (20.32mm)	0.750" (19.05mm)	0.800" (20.32mm)	0.690" (17.526mm)

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

The Samtec FWJ-05-01-T-S and FWJ-05-02-T-S connectors provide the most direct functional equivalence to the obsolete TE Connectivity 3-644763-5. Both maintain the 5-position, 0.156" pitch configuration with identical operating temperature range and UL94 V-0 flammability rating. The FWJ series is ROHS3 compliant and carries active product status, ensuring long-term availability. Selection between FWJ-05-01-T-S and FWJ-05-02-T-S depends on required contact length for mating: 0.450" (11.43mm) versus 0.500" (12.70mm) respectively.

For High-Temperature Insulation Applications:

The Samtec HFWJ-05-01-T-S and HFWJ-05-02-T-S connectors utilize Liquid Crystal Polymer (LCP) insulation material in place of standard PBT, with specified current ratings of 6.7A per contact. These connectors maintain the same operating temperature range and pitch specifications. Selection between variants follows the same contact length criteria as the FWJ series.

For Board-to-Board Spacing Requirements:

The Samtec JW series (JW-05-04-T-S-390-140, JW-05-04-T-S-430-140, JW-05-04-T-S-440-140, JW-05-04-T-S-450-140, JW-05-04-T-S-460-140) provides flexible stack height options for applications requiring specific board separation distances. These connectors maintain the 5-position, 0.156" pitch configuration with through-hole solder termination and ROHS3 compliance. Stack heights range from 0.390" to 0.450" with corresponding overall pin lengths from 0.620" to 0.680".

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and UL94 V-0 flammability ratings. The transition from the obsolete TE Connectivity part to active Samtec equivalents ensures continued regulatory compliance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the Samtec FWJ-05-01-T-S directly replace the TE Connectivity 3-644763-5?

A: The FWJ-05-01-T-S maintains electrical and mechanical compatibility through matching pitch (0.156"), position count (5), mounting type (through-hole), and termination method (solder). The primary difference is contact length for mating: 0.450" versus 0.400" on the original part. This difference is acceptable for most applications where the mating connector accommodates the longer contact length.

Q: What is the difference between FWJ and HFWJ series connectors?

A: The HFWJ series utilizes Liquid Crystal Polymer (LCP) insulation material with specified current ratings of 6.7A per contact, compared to the FWJ series which uses Polybutylene Terephthalate (PBT) without specified current ratings. Both series maintain identical pitch, position count, and operating temperature range. Selection depends on application current requirements and insulation material specifications.

Q: When should the JW flex stack series be selected?

A: The JW series is appropriate for applications requiring specific board-to-board spacing or stacking height control. These connectors provide variable stack heights from 0.390" to 0.450" with corresponding adjustments to overall pin length. Standard FWJ or HFWJ connectors are preferred for applications without specific spacing requirements.

Q: Are there differences in contact finish between the main part and substitutes?

A: The original TE Connectivity 3-644763-5 features gold plating on mating contacts, while all Samtec substitutes use tin plating. Both finishes provide adequate electrical conductivity and corrosion resistance for the specified operating environment. Tin plating is standard for industrial rectangular connectors at this pitch and position count.

Q: What is the significance of the contact material change from Copper Alloy to Phosphor Bronze?

A: Phosphor Bronze provides enhanced spring characteristics and wear resistance compared to standard Copper Alloy. This material change improves contact reliability and mating cycle life while maintaining electrical performance within the specified voltage and current parameters.

Q: Are all substitute parts RoHS compliant?

A: All Samtec substitute parts listed are ROHS3 compliant. The original TE Connectivity part is RoHS compliant. Both compliance levels are acceptable for applications subject to RoHS regulations.

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

A: All Samtec substitute parts are supplied in bulk packaging. The original TE Connectivity part does not specify packaging type. Bulk packaging is standard for through-hole connectors in this category.

Q: Can the FWJ-05-02-T-S be used where FWJ-05-01-T-S is specified?

A: The FWJ-05-02-T-S features a longer mating contact length (0.500" versus 0.450"). Substitution is acceptable if the mating connector accommodates the increased contact length. Verify mating connector specifications before substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message