Molex 0010977045 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0010977045 is an active-status vertical rectangular connector header designed for through-hole mounting applications. This 4-position, 2-row connector with 0.100" (2.54mm) pitch serves board-to-board and cable interconnection requirements across automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts are identified to address inventory availability, specific performance requirements, or design optimization needs while maintaining electrical and mechanical compatibility within defined parameters.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	4
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Shrouding	Unshrouded
Material Flammability Rating	UL94 V-0
Insulation Color	Black
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0010977045 is determined by strict alignment with the following core parameters:

Pitch - Mating: 0.100" (2.54mm) — exact match required
Number of Positions: 4 — exact match required
Number of Rows: 2 — exact match required
Row Spacing - Mating: 0.100" (2.54mm) — exact match required
Contact Type: Male Pin — exact match required
Mounting Type: Through Hole — exact match required
Termination: Solder — exact match required
Fastening Type: Push-Pull — exact match required
Connector Type: Header configuration (Breakaway, Cuttable, or standard Header acceptable)
Style: Board to Board or Cable — acceptable
Shrouding: Unshrouded — exact match required
Material Flammability Rating: UL94 V-0 — exact match required
Insulation Color: Black — exact match required
RoHS Status: RoHS Compliant or ROHS3 Compliant — acceptable
Moisture Sensitivity Level (MSL): 1 (Unlimited) — exact match required

All five substitute parts listed meet these core substitution criteria. Variations in contact length, contact finish, contact material, insulation material, operating temperature range, and current rating are secondary parameters that do not disqualify substitution but may influence selection based on specific application requirements.

Parameter Comparison

Parameter	Molex 0010977045	Amphenol ICC 77313-122-04LF	Amphenol ICC 77313-124-04LF	3M 929665-01-02-EU	3M 929836-01-02-RK	Harwin M20-9760246
Manufacturer	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	3M	Harwin Inc.
Series	C-Grid 70280	BERGSTIK®	BERGSTIK®	929	929	M20
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header, Cuttable
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	4	4	4	4	4	4
Number of Rows	2	2	2	2	2	2
Row Spacing - 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 Loaded	All	All	All	All	All	All
Style	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board	Board to Board	Board to Board or Cable
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.320" (8.13mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.235" (5.97mm)	0.235" (5.97mm)	0.228" (5.80mm)
Contact Length - Post	0.110" (2.79mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.122" (3.10mm)
Overall Contact Length	0.520" (13.21mm)	0.526" (13.35mm)	0.480" (12.19mm)	0.445" (11.30mm)	0.445" (11.30mm)	0.452" (11.48mm)
Insulation Height	0.090" (2.29mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Tin	Tin
Contact Finish - Post	Tin	Tin	Tin	Gold	Tin	Tin
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Copper Alloy	Brass
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled	Thermoplastic	Thermoplastic	Polycyclohexylenedimethylene Terephthalate (PCT)	Polycyclohexylenedimethylene Terephthalate (PCT)	Polyamide (PA6T), Nylon 6T
Operating Temperature	Not specified	-65°C ~ 130°C	-65°C ~ 130°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Insulation Color	Black	Black	Black	Black	Black	Black
Current Rating (Amps)	Not specified	3A per Contact	3A per Contact	2.5A	2.5A	3A per Contact
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active
Inventory Availability	796 Pcs	1219 Pcs	1714 Pcs	1025 Pcs	2273 Pcs	12636 Pcs

Engineering Selection Recommendations

All five substitute parts maintain active product status and meet core substitution criteria. Selection between the Molex 0010977045 and its substitutes is based on the following engineering considerations:

Amphenol ICC 77313-122-04LF and 77313-124-04LF: Both BERGSTIK® series parts offer extended operating temperature range (-65°C ~ 130°C) and 3A per contact current rating. The 77313-122-04LF provides contact length closest to the original specification (0.305" mating contact length). The 77313-124-04LF offers shorter overall contact length (0.480") for space-constrained applications. Both feature gold or gold GXT™ mating contact finish, suitable for applications requiring enhanced corrosion resistance.

3M 929665-01-02-EU and 929836-01-02-RK: Both 929 series parts operate within -40°C ~ 105°C range with 2.5A per contact current rating. The 929665-01-02-EU features gold contact finish on both mating and post surfaces. The 929836-01-02-RK uses tin finish on both surfaces, matching the original Molex specification more closely. Both employ PCT insulation material and are suitable for general-purpose applications.

Harwin M20-9760246: The M20 series offers the highest inventory availability (12636 pcs) and cuttable connector type for modular applications. Operating temperature range is -40°C ~ 105°C with 3A per contact current rating. Brass contact material and polyamide insulation provide robust mechanical performance. Mated stacking heights are specified (9.94mm, 10.64mm, 11.04mm, 16.54mm), enabling precise board-to-board spacing design.

All substitutes maintain UL94 V-0 flammability rating, MSL 1 (Unlimited) moisture sensitivity, and RoHS compliance status, ensuring regulatory and environmental conformance equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Molex 0010977045 with any of these parts in my existing design?

A: Yes. All listed substitutes meet the core electrical and mechanical parameters: 4-position, 2-row, 0.100" (2.54mm) pitch, male pin header, through-hole solder termination, push-pull fastening, unshrouded, square contact shape, black insulation, UL94 V-0 flammability rating, and MSL 1 moisture sensitivity. Physical board layout compatibility depends on contact length and insulation height variations, which are provided in the parameter comparison table.

Q: What are the key differences between the Amphenol ICC and 3M substitutes?

A: Amphenol ICC BERGSTIK® parts (77313-122-04LF and 77313-124-04LF) operate at -65°C ~ 130°C with 3A per contact rating and phosphor bronze contact material. 3M 929 series parts operate at -40°C ~ 105°C with 2.5A per contact rating and copper alloy contact material. Contact length and finish specifications differ; refer to the parameter comparison table for specific dimensions.

Q: Does contact finish affect substitution compatibility?

A: Contact finish does not disqualify substitution but influences application suitability. Tin finish (Molex 0010977045, 3M 929836-01-02-RK, Harwin M20-9760246) provides cost-effective performance for general applications. Gold or gold GXT™ finish (Amphenol ICC 77313-122-04LF and 77313-124-04LF) and gold finish (3M 929665-01-02-EU) offer enhanced corrosion resistance for demanding environments or high-reliability applications.

Q: Are there inventory or lead-time considerations?

A: Inventory levels vary significantly. Harwin M20-9760246 offers the highest availability (12636 pcs), followed by Amphenol ICC 77313-124-04LF (1714 pcs), Amphenol ICC 77313-122-04LF (1219 pcs), 3M 929665-01-02-EU (1025 pcs), and Molex 0010977045 (796 pcs). Inventory status is subject to change; consult current distributor data for real-time availability.

Q: What is the significance of the Harwin M20-9760246 cuttable connector type?

A: The cuttable connector type allows individual positions to be separated after assembly, enabling modular connector configurations. This feature is beneficial for applications requiring variable connector sizes or custom breakaway configurations without redesigning the connector assembly.

Q: Do all substitutes support the same applications as the original Molex part?

A: All substitutes are suitable for board-to-board and cable interconnection applications. The Molex 0010977045 specifies automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts do not explicitly list applications in the provided data; application suitability must be confirmed against specific design requirements, environmental conditions, and regulatory standards applicable to your end-use application.

Q: What is the impact of different insulation materials on performance?

A: Insulation material affects mechanical strength, temperature stability, and chemical resistance. Molex uses liquid crystal polymer (LCP) glass-filled insulation. Amphenol ICC uses thermoplastic. 3M uses polycyclohexylenedimethylene terephthalate (PCT). Harwin uses polyamide (PA6T) nylon 6T. All materials meet UL94 V-0 flammability requirements. Material selection does not disqualify substitution but may influence performance in extreme temperature, humidity, or chemical exposure scenarios.

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