M20-9713645 Equivalent & Substitute Parts

Part Overview

The M20-9713645 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle mounting with 36 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part features male pins with solder termination, gold-plated brass contacts, and operates across -40°C to 105°C. Substitutes must maintain electrical and mechanical compatibility while meeting current product availability requirements.

Key Parameters

Parameter	M20-9713645 Specification
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	36
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Termination	Solder
Contact Material	Brass
Contact Finish - Mating	Gold
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Critical Matching Parameters:

Pitch - Mating: 0.100" (2.54mm) — must be exact
Number of Positions: 36 — must be exact
Number of Rows: 1 — must be exact
Mounting Type: Through Hole, Right Angle — must be exact
Termination: Solder — must be exact
Contact Type: Male Pin — must be exact
Current Rating: 3A per Contact — must be exact or higher
Material Flammability Rating: UL94 V-0 — must be met
Moisture Sensitivity Level: 1 (Unlimited) — must be met or better

Allowable Variations:

Contact Material: Brass or Phosphor Bronze acceptable
Contact Finish - Mating: Gold or Tin acceptable
Contact Length - Mating: Minor variations permitted (5.84mm to 8.08mm range)
Contact Length - Post: Minor variations permitted (2.79mm to 3.05mm range)
Insulation Height: Minor variations permitted (2.40mm to 2.54mm range)
Operating Temperature: May exceed minimum specification
Product Status: Active substitutes preferred over obsolete

All substitute parts listed meet these criteria and are functionally interchangeable within the specified electrical and mechanical tolerances.

Parameter Comparison

Parameter	M20-9713645	M20-9963645	68016-136HLF	68016-236HLF	68016-336HLF	68016-436HLF	68458-136HLF	77315-124-36LF	77315-424-36LF	77315-824-36LF	861400361LO1LF
Manufacturer	Harwin Inc.	Harwin Inc.	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header, Cuttable	Header	Header	Header	Header	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway
Contact Type	Male Pin	Male Pin	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)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	36	36	36	36	36	36	36	36	36	36	36
Number of Rows	1	1	1	1	1	1	1	1	1	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Material	Brass	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Copper Alloy
Contact Finish - Mating	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Gold or Gold, GXT™	Tin
Contact Length - Mating	0.276" (7.00mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.318" (8.08mm)	0.266" (6.75mm)	0.266" (6.75mm)	0.266" (6.75mm)	0.276" (7.00mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.110" (2.79mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.118" (3.00mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.094" (2.40mm)	0.094" (2.40mm)	0.094" (2.40mm)	0.100" (2.54mm)
Current Rating	3A per Contact	3A per Contact	3A	3A	3A	3A	3A	3A per Contact	3A per Contact	3A per Contact	3A
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-40°C ~ 100°C
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	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: M20-9963645

The M20-9963645 is the direct active equivalent from Harwin Inc., the original manufacturer. This part maintains identical electrical and mechanical specifications to the M20-9713645 while offering active product status and improved availability (1396 units in stock versus 846 for the obsolete part). Both parts share the same series designation (M20), contact material (Brass), and operating temperature range (-40°C ~ 105°C). Selection of this part eliminates any design risk associated with cross-manufacturer substitution.

Secondary Recommendations: Amphenol ICC (FCI) BERGSTIK® II Series

The 68016-136HLF, 68016-236HLF, 68016-336HLF, and 68016-436HLF represent active alternatives from Amphenol ICC (FCI) within the BERGSTIK® II series. These parts meet all critical electrical and mechanical parameters with the following considerations:

Contact material is Phosphor Bronze instead of Brass, which is acceptable for equivalent electrical performance
Operating temperature range extends to -65°C ~ 130°C, exceeding the original specification
Contact length variations (5.84mm mating contact) fall within acceptable mechanical tolerances
All parts maintain UL94 V-0 flammability rating and RoHS compliance
Inventory availability ranges from 888 to 2548 units

Tertiary Recommendations: Amphenol ICC (FCI) BERGSTIK® Series

The 77315-124-36LF, 77315-424-36LF, and 77315-824-36LF are breakaway variants from the BERGSTIK® series. These parts are functionally equivalent with the following distinctions:

Breakaway connector type allows individual position separation, providing design flexibility
Operating temperature range is -65°C ~ 125°C
Contact finish options include Gold or Tin plating
Insulation material is Thermoplastic
All parts maintain 3A per contact current rating and UL94 V-0 compliance

Alternative: 68458-136HLF

The 68458-136HLF from Amphenol ICC (FCI) BERGSTIK® II series offers extended mating contact length (8.08mm) suitable for applications requiring deeper insertion depth. All other electrical and mechanical parameters remain equivalent.

Alternative: 861400361LO1LF

The 861400361LO1LF from Amphenol ICC (FCI) BERGSTIK® series features Tin contact finish and Copper Alloy contact material. Operating temperature range is -40°C ~ 100°C, which meets the original specification minimum. This part is suitable for cost-optimized designs where gold plating is not required.

All recommended substitutes maintain RoHS compliance, MSL 1 (Unlimited) rating, and UL94 V-0 flammability certification. Selection should be based on availability, cost, and specific application requirements for contact finish and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use a BERGSTIK® II series connector as a direct replacement for the M20-9713645?

A: Yes. The BERGSTIK® II series (68016 base part numbers) meets all critical electrical and mechanical parameters: 36 positions, 0.100" pitch, through-hole right-angle mounting, solder termination, and 3A per contact current rating. Contact material (Phosphor Bronze) and contact finish (Gold or Tin) variations are acceptable. Operating temperature range extends beyond the original specification, providing additional margin.

Q: What is the difference between cuttable and breakaway connector types?

A: Cuttable connectors (M20-9713645, M20-9963645, 68016 series) are manufactured as a single unit and can be mechanically cut to reduce position count. Breakaway connectors (77315 and 861400361LO1LF series) feature individual position separation capability, allowing removal of specific positions without cutting. Both types are electrically and mechanically equivalent for the full 36-position configuration.

Q: Are there any compatibility issues with contact finish variations (Gold vs. Tin)?

A: No. Gold and Tin contact finishes are both acceptable for this connector category. Gold plating provides enhanced corrosion resistance and is preferred for high-reliability applications. Tin plating is suitable for standard industrial applications and offers cost optimization. Selection should be based on application environment and cost requirements.

Q: Does the insulation height variation (2.40mm to 2.54mm) affect board layout?

A: Insulation height variations within the 2.40mm to 2.54mm range are within acceptable mechanical tolerances for standard PCB designs. These minor differences do not require layout modifications. Verify specific board clearance requirements if space constraints exist.

Q: Which substitute offers the best availability?

A: The 68016-236HLF offers the highest inventory level at 2548 units in stock. The M20-9963645 (Harwin direct equivalent) provides 1396 units. Both parts are suitable for immediate procurement without lead time concerns.

Q: Can I use the 861400361LO1LF if my application operates at 105°C?

A: The 861400361LO1LF has a maximum operating temperature of 100°C, which is below the original M20-9713645 specification of 105°C. This part is not suitable for applications requiring operation above 100°C. Use M20-9963645, BERGSTIK® II series (68016), or BERGSTIK® series (77315) alternatives instead.

Q: Are all substitute parts ROHS compliant?

A: Yes. All listed substitute parts are RoHS compliant. The M20-9963645 is ROHS3 compliant (equivalent to RoHS 2 with additional restrictions). Amphenol ICC (FCI) parts are RoHS compliant. All parts meet MSL 1 (Unlimited) moisture sensitivity requirements.

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