Molex 0901310156 Rectangular Connector Header – Equivalent & Substitute Parts

Part Overview

The Molex 0901310156 is a vertical rectangular connector header designed for through-hole mounting applications. This 72-position, 2-row connector operates at 0.100" (2.54mm) pitch and is classified as active product status. The connector features male pins with tin-plated brass contacts, unshrouded design, and push-pull fastening. Substitute parts are necessary when addressing supply constraints, obsolescence concerns, or when specific contact finish or material requirements align with alternative manufacturers' offerings.

Key Parameters

Parameter	Value
Manufacturer Part Number	0901310156
Manufacturer	Molex
Category	Rectangular Connectors
Number of Positions	72
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Connector Type	Header, Breakaway
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Contact Material	Brass
Contact Finish - Mating	Tin
Insulation Material	Polyester, Glass Filled
Insulation Color	Black
Material Flammability Rating	UL94 V-0
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0901310156 is determined by strict alignment of the following critical parameters:

Position Count & Row Configuration: 72 positions, 2 rows (exact match required)
Mating Pitch: 0.100" (2.54mm) (exact match required)
Row Spacing: 0.100" (2.54mm) (exact match required)
Connector Type: Header, Breakaway (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)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in contact material, contact finish composition, insulation material type, and operating temperature ranges are permitted within the substitution set, as these do not affect physical interchangeability or basic functional compatibility in standard applications.

Parameter Comparison

Parameter	Molex 0901310156	TE Connectivity 4-103328-0	Amphenol 77313-127-72LF	Amphenol 77313-424-72LF	Amphenol 77313-824-72LF	Harwin M20-9983645
Number of Positions	72	80	72	72	72	72
Number of Rows	2	2	2	2	2	2
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)
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)
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Cuttable
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Material	Brass	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass
Contact Finish - Mating	Tin	Tin-Lead	Gold or Gold, GXT™	Tin	Gold or Gold, GXT™	Gold
Insulation Material	Polyester, Glass Filled	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Polyamide (PA6T), Nylon 6T
Insulation Color	Black	Black	Black	Black	Black	Black
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Product Status	Active	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not applicable	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: Amphenol ICC (FCI) 77313-424-72LF or 77313-127-72LF. Both parts maintain active product status, achieve full RoHS3 compliance, and provide identical position and pitch specifications to the Molex 0901310156. The 77313-424-72LF offers tin-plated mating contacts matching the original specification, while the 77313-127-72LF provides gold-plated contacts for enhanced corrosion resistance in demanding environments.

Secondary Recommendation: Amphenol ICC (FCI) 77313-824-72LF. This variant offers gold-plated mating contacts with active product status and full RoHS compliance, suitable for applications requiring superior contact reliability.

Alternative Recommendation: Harwin M20-9983645. This part maintains active status, ROHS3 compliance, and identical position/pitch configuration. The cuttable connector design and polyamide insulation material provide design flexibility for custom applications.

Not Recommended for Direct Substitution: TE Connectivity 4-103328-0. Although mechanically compatible in pitch and row spacing, this part features 80 positions (not 72), obsolete product status, and non-RoHS compliance, making it unsuitable for new designs or long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 4-103328-0 be used as a direct replacement for the Molex 0901310156?

A: No. The TE Connectivity part contains 80 positions versus the required 72 positions. Physical interchangeability is not possible. Additionally, this part is classified as obsolete, presenting supply and support risks.

Q: What is the difference between the Amphenol 77313-424-72LF and 77313-127-72LF?

A: Both parts are electrically and mechanically identical in position count, pitch, and row spacing. The primary difference is contact finish: 77313-424-72LF uses tin plating on mating contacts, while 77313-127-72LF uses gold plating. Gold-plated contacts provide enhanced corrosion resistance and lower contact resistance in low-signal applications.

Q: Are all substitute parts RoHS compliant?

A: Four of the five substitute parts are RoHS compliant (Amphenol 77313-127-72LF, 77313-424-72LF, 77313-824-72LF, and Harwin M20-9983645). The TE Connectivity 4-103328-0 is not RoHS applicable due to its obsolete status.

Q: What is the difference between "Breakaway" and "Cuttable" connector types?

A: Both designations indicate the connector can be separated into individual or smaller groups of pins. Breakaway connectors are pre-designed for specific break points, while cuttable connectors allow custom separation at any position along the header.

Q: Can I use the Harwin M20-9983645 in place of the Molex 0901310156?

A: Yes. The Harwin part meets all critical substitution parameters: 72 positions, 2 rows, 0.100" pitch, through-hole mounting, solder termination, and push-pull fastening. The cuttable design and polyamide insulation are compatible alternatives to the original polyester insulation.

Q: What is the operating temperature range for each substitute part?

A: Molex 0901310156 does not specify an operating temperature range. TE Connectivity 4-103328-0 operates from -65°C to 105°C. Amphenol parts (77313-127-72LF, 77313-424-72LF, 77313-824-72LF) operate from -65°C to 130°C. Harwin M20-9983645 operates from -40°C to 105°C.

Q: Are contact finish differences significant for my application?

A: Contact finish affects corrosion resistance and contact resistance characteristics. Tin-plated contacts (Molex 0901310156, Amphenol 77313-424-72LF) are suitable for general-purpose applications. Gold-plated contacts (Amphenol 77313-127-72LF, 77313-824-72LF, Harwin M20-9983645) provide superior performance in high-reliability, low-signal, or corrosive environments.

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