M20-9731345 Equivalent & Substitute Parts

Part Overview

The M20-9731345 is a vertical rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting with 13 positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and design updates. The part features male pins, unshrouded design, and solder termination suitable for board-to-board or cable applications. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	M20-9731345 Specification
Manufacturer	Harwin Inc.
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	13
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Contact Shape	Square
Contact Finish - Mating	Gold
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the M20-9731345 are qualified based on the following critical parameters that must align with the original specification:

Mandatory Matching Parameters:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 13
Number of Rows: 1
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Shrouding: Unshrouded
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Allowable Variations:

Connector Type: Header variants (Breakaway, Cuttable)
Contact Finish - Mating: Gold or Tin (both acceptable for electrical compatibility)
Insulation Material: Polyamide, Polyester, or Thermoplastic variants
Operating Temperature Range: May exceed original specification
Current Rating: May equal or exceed original specification
Contact Length dimensions: Minor variations acceptable within mechanical envelope constraints

Seven substitute parts meet these criteria across manufacturers Molex, Amphenol ICC (FCI), 3M, and Samtec Inc.

Parameter Comparison

Parameter	M20-9731345	0022284131	0022284134	0901200133	0901200773	77311-124-13LF	77311-127-13LF	961113-6804-AR	MTSW-113-08-T-S-295-006
Manufacturer	Harwin Inc.	Molex	Molex	Molex	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header	Header, Cuttable
Contact Type	Male Pin	Male Pin	Male Pin	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	13	13	13	13	13	13	13	13	13
Number of Rows	1	1	1	1	1	1	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Tin	Gold	Tin	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Tin
Operating Temperature	-40°C ~ 105°C	-	-	-55°C ~ 125°C	-55°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-25°C ~ 105°C	-55°C ~ 105°C
Current Rating	3A per Contact	-	-	-	-	3A per Contact	3A per Contact	2A	3A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are active products with current manufacturing status, eliminating supply chain risk associated with the obsolete M20-9731345. Selection criteria are based on compliance certifications and product availability:

Molex KK254 Series (0022284131, 0022284134): Both parts carry ROHS3 compliance and feature breakaway connector design. Part 0022284134 matches the gold mating contact finish of the original. These parts provide the highest inventory availability (911 and 1184 units respectively) and are suitable for general-purpose, automotive, medical, and telecommunications applications.

Molex C-Grid III Series (0901200133, 0901200773): Both parts extend the operating temperature range to -55°C ~ 125°C and carry ROHS3 compliance. Part 0901200773 provides gold mating contact finish matching the original specification. These parts are packaged in tray format and offer 1075 and 961 units in stock respectively.

Amphenol ICC BERGSTIK® Series (77311-124-13LF, 77311-127-13LF): Both parts maintain the 3A per contact current rating and -65°C ~ 125°C operating temperature range. Gold or Gold GXT™ mating contact finish is available. These parts carry RoHS compliance and are suitable for board-to-board applications. Inventory levels are 847 and 621 units respectively.

3M Series 961 (961113-6804-AR): This part carries RoHS compliance with gold mating contact finish. Current rating is 2A per contact, which is lower than the original 3A specification. Operating temperature range is -25°C ~ 105°C, matching the original lower bound. Inventory availability is 851 units.

Samtec Flex Stack MTSW Series (MTSW-113-08-T-S-295-006): This part features cuttable header design similar to the original, carries ROHS3 compliance, and maintains 3A current rating. Operating temperature range is -55°C ~ 105°C. Inventory availability is 725 units. Note: 12 of 13 positions are loaded.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different contact finish (tin vs. gold)?

A: Yes. Both tin and gold contact finishes are electrically compatible for 0.100" (2.54mm) pitch connectors. Gold provides superior corrosion resistance and is preferred for high-reliability applications. Tin is acceptable for general-purpose applications. The choice depends on environmental exposure and application requirements.

Q: Are all substitute parts mechanically compatible with the original PCB footprint?

A: All substitute parts share identical pitch (0.100" / 2.54mm), position count (13), row configuration (1), and through-hole mounting type. Minor variations in contact length and insulation height exist but do not affect PCB footprint compatibility. Physical envelope dimensions should be verified for space-constrained designs.

Q: Which substitute part best matches the original M20-9731345 specification?

A: Molex 0022284134 and Amphenol ICC 77311-127-13LF provide the closest electrical and thermal match, both featuring gold mating contact finish, 3A current rating, and UL94 V-0 flammability rating. Molex 0022284134 offers superior inventory availability (1184 units).

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

A: Cuttable headers allow individual positions to be separated by cutting. Breakaway headers feature pre-scored sections for position separation. Both designs provide equivalent electrical and mechanical function. Selection depends on assembly process requirements.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All substitute parts carry either RoHS or ROHS3 compliance certification. ROHS3 represents the current regulatory standard. All parts are suitable for applications requiring RoHS compliance.

Q: Is the 3M 961113-6804-AR suitable as a direct replacement?

A: The 3M part is functionally compatible but carries a 2A per contact current rating versus the original 3A specification. This part is suitable for applications with current requirements not exceeding 2A per contact. Operating temperature range (-25°C ~ 105°C) matches the original specification.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture control requirements. All substitute parts carry MSL 1 rating, matching the original specification. No special storage or handling procedures are required.

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