Harwin M20-9740246 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9740246 is a rectangular connector header, right-angle configuration, with 4 positions at 2.54mm pitch. This through-hole component features a 2-row layout with male pins, solder termination, and push-pull fastening. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives from Amphenol ICC (FCI) BERGSTIK® and BERGSTIK® II series provide direct functional equivalence with enhanced compliance and availability.

Key Parameters

Parameter	Value
Connector Type	Header, Right Angle
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, Right Angle
Termination	Solder
Contact Type	Male Pin
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

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

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, Right Angle
Termination: Solder
Contact Type: Male Pin
Fastening Type: Push-Pull
Material Flammability Rating: UL94 V-0
Current Rating: 3A per Contact

All substitute parts listed meet these mandatory criteria. Variations in contact finish, contact material, insulation height, and post length are permissible within the scope of board-to-board connector applications. Parts are grouped by manufacturer series and contact finish specification.

Parameter Comparison

Part Number	Manufacturer	Series	Pitch (mm)	Positions	Rows	Contact Finish - Mating	Contact Material	Operating Temp (°C)	RoHS Status	Product Status
M20-9740246	Harwin Inc.	M20	2.54	4	2	Tin	Brass	-40 ~ 105	ROHS3 Compliant	Obsolete
68020-104H	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	Not specified	RoHS non-compliant	Active
68020-104HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68020-404HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Tin	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68021-104HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68021-204HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68021-304HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68021-404HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Tin	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
68021-704HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	4	2	Gold or Gold, GXT™	Phosphor Bronze	-65 ~ 125	RoHS Compliant	Active
76350-104-04LF	Amphenol ICC (FCI)	BERGSTIK®	2.54	4	2	Gold, GXT™	Phosphor Bronze	Not specified	RoHS Compliant	Active
77317-103-04LF	Amphenol ICC (FCI)	BERGSTIK®	2.54	4	2	Gold, GXT™	Phosphor Bronze	-65 ~ 130	RoHS Compliant	Active

Engineering Selection Recommendations

Primary Recommendation: 68020-404HLF

This part provides direct functional equivalence to the M20-9740246 with tin contact finish matching the original specification. It is RoHS Compliant, carries active product status, and operates across an extended temperature range (-65°C ~ 125°C), exceeding the original -40°C ~ 105°C specification. Phosphor bronze contact material offers superior corrosion resistance compared to brass.

Alternative for Gold-Plated Contact Applications: 68021-404HLF

When gold contact finish is required for enhanced reliability in low-signal applications, 68021-404HLF provides equivalent mechanical and electrical performance with tin-plated post termination. RoHS Compliant status and active availability support production continuity.

Extended Temperature Range Option: 77317-103-04LF

For applications requiring operation to 130°C, this BERGSTIK® series part offers the highest temperature rating among available substitutes. Breakaway connector type provides additional mechanical flexibility. RoHS Compliant with active status.

All recommended substitutes maintain the 3A per contact current rating, UL94 V-0 flammability rating, and push-pull fastening mechanism of the original part.

Frequently Asked Questions (FAQ)

Q: Can 68020-104H be used as a direct substitute for M20-9740246?

A: 68020-104H meets all core electrical and mechanical parameters but carries RoHS non-compliant status and lacks specified operating temperature range. For new designs or RoHS-regulated applications, 68020-104HLF is the preferred alternative.

Q: What is the difference between 68020-404HLF and 68021-404HLF?

A: Both parts are functionally equivalent with identical pitch, position count, and current rating. The primary difference is the base product number (68020 vs. 68021), which reflects internal design variations. 68021-404HLF includes voltage rating specification (110V) not provided for 68020-404HLF. Both are RoHS Compliant and active.

Q: Are BERGSTIK® and BERGSTIK® II series parts interchangeable?

A: Yes, within the scope of this substitution list. Both series maintain the same 2.54mm pitch, 4-position, 2-row configuration with through-hole right-angle mounting. BERGSTIK® II parts (68020, 68021 base numbers) represent the current generation with enhanced compliance certifications.

Q: Does contact finish affect electrical performance?

A: Contact finish (tin vs. gold) does not affect the 3A per contact current rating or basic electrical function. Gold finish provides enhanced corrosion resistance in high-humidity or marine environments. Tin finish is suitable for standard industrial applications.

Q: What packaging options are available?

A: Substitute parts are supplied in Bulk or Bag packaging. Bag packaging (indicated by "LF" suffix) is standard for RoHS Compliant variants. Bulk packaging is available for non-compliant or legacy variants.

Q: Is the M20-9740246 still available?

A: The M20-9740246 is classified as obsolete. Amphenol ICC (FCI) BERGSTIK® and BERGSTIK® II series parts listed above are active alternatives with current manufacturing and distribution support.

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