TE Connectivity 103648-3 Rectangular Connector Housing Equivalent & Substitute Parts

Part Overview

The TE Connectivity 103648-3 is a 4-position rectangular connector receptacle housing with 0.100" (2.54mm) pitch, designed for free-hanging in-line mounting applications. This component is part of the AMPMODU MTE series and features crimp-type female socket contacts. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	4
Pitch	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Color	Black
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 103648-3 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Connector Type: Receptacle
Contact Type: Female Socket
Number of Positions: 4
Pitch: 0.100" (2.54mm)
Number of Rows: 1
Mounting Type: Free Hanging (In-Line)
Contact Termination: Crimp
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Considerations:

Color (Black preferred for direct replacement; Green variants listed for reference)
RoHS Compliance Status (RoHS3 Compliant or RoHS Compliant acceptable)
Product Status (Active status preferred for ongoing availability)

All substitute parts listed maintain the core electrical and mechanical specifications of the original 103648-3. Variations in insulation material, operating temperature range, and connector series do not affect functional interchangeability for standard applications.

Parameter Comparison

Part Number	Manufacturer	Series	Connector Type	Positions	Pitch	Color	Insulation Material	Operating Temperature	Product Status	RoHS Status
103648-3	TE Connectivity	AMPMODU MTE	Receptacle	4	0.100"	Black	Not Specified	Not Specified	Discontinued	RoHS Compliant
1-87175-0	TE Connectivity	AMPMODU	Receptacle	4	0.100"	Black	Polyester, Glass Filled	-65°C ~ 105°C	Active	ROHS3 Compliant
1241634-1	TE Connectivity	Micro Quadlok	Receptacle	4	0.100"	Black	Polyamide (PA66), Nylon 6/6	-40°C ~ 85°C	Active	ROHS3 Compliant
1241634-3	TE Connectivity	Micro Quadlok	Receptacle	4	0.100"	Black	Polyamide (PA66), Nylon 6/6	-40°C ~ 85°C	Active	ROHS3 Compliant
280359	TE Connectivity	AMPMODU Mod II	Receptacle	4	0.100"	Black	Not Specified	Not Specified	Active	RoHS Compliant
281838-4	TE Connectivity	HE13/HE14	Receptacle	4	0.100"	Black	Polybutylene Terephthalate (PBT), Glass Filled	-55°C ~ 125°C	Active	RoHS Compliant
925366-4	TE Connectivity	AMPMODU Mod IV	Receptacle	4	0.100"	Green	Polyamide (PA), Nylon	-65°C ~ 105°C	Active	RoHS Compliant
925369-4	TE Connectivity	AMPMODU Mod IV	Receptacle	4	0.100"	Green	Polyamide (PA66), Nylon 6/6	-65°C ~ 105°C	Active	RoHS Compliant
926475-4	TE Connectivity	AMPMODU Mod IV	Receptacle	4	0.100"	Black	Polybutylene Terephthalate (PBT), Glass Filled	-65°C ~ 105°C	Active	RoHS Compliant
926657-4	TE Connectivity	AMPMODU	Receptacle	4	0.100"	Black	Polybutylene Terephthalate (PBT)	-65°C ~ 105°C	Active	RoHS Compliant
0050579204	Molex	SL 70066	Receptacle	4	0.100"	Black	Polyester, Glass Filled	-40°C ~ 105°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Black Color, Active Status):

The following parts are recommended as direct substitutes for the discontinued 103648-3:

1-87175-0 (TE Connectivity AMPMODU series) - Active product with ROHS3 compliance, polyester glass-filled insulation, and extended operating temperature range (-65°C to 105°C). High inventory availability (19,039 units).
281838-4 (TE Connectivity HE13/HE14 series) - Active product with RoHS compliance, polybutylene terephthalate glass-filled insulation, and superior operating temperature range (-55°C to 125°C). Substantial inventory (13,768 units).
926475-4 (TE Connectivity AMPMODU Mod IV series) - Active product with RoHS compliance, polybutylene terephthalate glass-filled insulation, and extended operating temperature range (-65°C to 105°C). Moderate inventory (3,985 units).
926657-4 (TE Connectivity AMPMODU series) - Active product with RoHS compliance, polybutylene terephthalate insulation, and extended operating temperature range (-65°C to 105°C). Moderate inventory (4,252 units).
0050579204 (Molex SL 70066 series) - Active product from alternative manufacturer with ROHS3 compliance, polyester glass-filled insulation, and operating temperature range (-40°C to 105°C). Highest inventory availability (55,265 units).

Secondary Substitutes (Alternative Colors or Temperature Ranges):

1241634-1 and 1241634-3 (TE Connectivity Micro Quadlok series) - Active products with ROHS3 compliance and polyamide nylon insulation. Operating temperature range (-40°C to 85°C) is narrower than original specification.
925366-4 and 925369-4 (TE Connectivity AMPMODU Mod IV series, Green) - Active products with RoHS compliance suitable for applications where color differentiation is required. Green housing distinguishes these from the black original.
280359 (TE Connectivity AMPMODU Mod II series) - Active product with RoHS compliance. Limited technical data available for insulation material and operating temperature.

Compliance Status:

All substitute parts maintain Moisture Sensitivity Level 1 (Unlimited) and ECCN EAR99 classification consistent with the original 103648-3. RoHS compliance is maintained across all alternatives, with several parts achieving ROHS3 Compliant status.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different operating temperature range?

A: Yes. The substitute parts listed maintain the same electrical and mechanical specifications as the 103648-3. Operating temperature range differences do not affect functional interchangeability. Selection should be based on your application's thermal requirements. Parts with extended temperature ranges (such as 281838-4 at -55°C to 125°C) provide additional margin for demanding environments.

Q: What is the difference between the TE Connectivity and Molex options?

A: Both manufacturers produce functionally equivalent 4-position receptacle housings with 0.100" pitch and crimp termination. The Molex 0050579204 (SL 70066 series) offers the highest inventory availability and ROHS3 compliance. Selection between manufacturers depends on your supply chain preferences and existing connector ecosystems.

Q: Are the green-colored parts (925366-4, 925369-4) direct replacements?

A: These parts are electrically and mechanically equivalent to the 103648-3 but feature green insulation instead of black. They are suitable for applications where color coding is used for circuit identification or organization. If black color is required for your application, select from the black-colored alternatives listed.

Q: What does "Contacts Not Included" mean?

A: The connector housing is supplied without pre-installed contacts. Contacts must be obtained separately and crimped into the housing according to the connector series specifications. Ensure that replacement contacts are compatible with your selected substitute housing.

Q: Which substitute offers the best long-term availability?

A: Parts with Active product status and high inventory levels provide the best long-term availability. The 1-87175-0 (19,039 units), 0050579204 (55,265 units), and 281838-4 (13,768 units) represent the strongest availability positions.

Q: Can I mix substitute parts from different series in the same assembly?

A: All listed substitutes maintain the same pitch (0.100"), number of positions (4), and mounting type (free-hanging in-line). However, connector series differences may affect mating characteristics with corresponding plug housings. Verify compatibility with your mating connector before mixing parts from different series.

Q: What is the significance of RoHS3 Compliance versus RoHS Compliance?

A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 Compliant represents the current standard. Parts marked as RoHS Compliant meet the original RoHS directive requirements. Both are acceptable for most applications; ROHS3 Compliant parts represent the current regulatory standard.

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