M20-9742142 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9742142 is a rectangular connector header, right-angle configuration, with 42 positions at 2.54mm pitch. This through-hole component features male pins, solder termination, and is designed for board-to-board or cable applications. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header, Right Angle
Contact Type	Male Pin
Number of Positions	42
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
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 for the M20-9742142 is determined by the following critical parameters:

42-position, 2-row configuration at 0.100" (2.54mm) pitch
Right-angle, through-hole mounting
Male pin contact type with solder termination
3A per contact current rating
UL94 V-0 flammability compliance
Push-pull fastening type

Substitute parts must maintain these core electrical and mechanical specifications. Variations in contact material (brass vs. phosphor bronze), contact finish (gold vs. tin), insulation material, and operating temperature range are permitted within the allowed parameter set, provided all critical dimensions and electrical ratings remain compatible.

Parameter Comparison

Parameter	M20-9742142	68020-142HLF	68021-142HLF	77317-103-42LF	77317-104-42LF	77317-403-42LF	77317-404-42LF	77317-803-42LF	77317-804-42LF	PRPC021DBAN-M71RC
Manufacturer	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)	Sullins Connector Solutions
Number of Positions	42	42	42	42	42	42	42	42	42	42
Number of Rows	2	2	2	2	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
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
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Operating Temperature	-40°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-40°C ~ 105°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
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain compatibility with the M20-9742142 across critical electrical and mechanical parameters. Selection among substitutes should be based on the following factors:

Product Status: All substitute parts carry active product status, ensuring long-term availability and manufacturing support. The original M20-9742142 is obsolete and should be replaced in new designs.

Compliance: All substitutes meet UL94 V-0 flammability requirements and RoHS compliance standards. The PRPC021DBAN-M71RC and M20-9742142 are ROHS3 compliant, while Amphenol ICC (FCI) parts are RoHS compliant.

Operating Temperature Range: Amphenol ICC (FCI) BERGSTIK® and BERGSTIK® II series parts offer extended operating temperature ranges (-65°C to 125°C or -65°C to 130°C) compared to the original part (-40°C to 105°C). The Sullins PRPC021DBAN-M71RC matches the original temperature range.

Contact Material and Finish: Amphenol ICC (FCI) parts use phosphor bronze contacts with gold or tin finishes. The original Harwin part and Sullins alternative use brass contacts. Contact finish variations (gold plating thickness, tin finish) do not affect electrical compatibility for standard applications.

Packaging: Amphenol ICC (FCI) parts are supplied in bag packaging. Sullins PRPC021DBAN-M71RC is supplied in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can I directly replace M20-9742142 with any of these substitute parts?

A: Yes. All listed parts maintain the same 42-position, 2-row configuration at 0.100" (2.54mm) pitch with right-angle through-hole mounting and male pin contacts. Electrical and mechanical compatibility is preserved across all substitutes.

Q: What is the difference between BERGSTIK® and BERGSTIK® II series?

A: Both series are manufactured by Amphenol ICC (FCI) and maintain identical pitch, position count, and mounting specifications. BERGSTIK® II (68020-142HLF, 68021-142HLF) represents the newer product line with active status. BERGSTIK® (77317 series) is also active. Selection between series does not affect functional compatibility.

Q: Do contact finish differences affect performance?

A: Contact finish variations (gold vs. tin, plating thickness) do not affect electrical compatibility for standard applications. Gold finishes provide enhanced corrosion resistance in harsh environments. Tin finishes are suitable for standard industrial applications. Selection should align with environmental requirements and cost considerations.

Q: Why do some parts have higher operating temperature ratings?

A: Amphenol ICC (FCI) substitutes support extended temperature ranges (-65°C to 130°C) due to material composition and design. The original M20-9742142 and Sullins PRPC021DBAN-M71RC are rated to -40°C to 105°C. For applications within the original temperature range, all parts are functionally equivalent.

Q: Are there differences in contact post length?

A: Contact post lengths vary between 0.095" (2.41mm) and 0.120" (3.05mm). These variations are within acceptable tolerance for standard PCB through-hole mounting. Verify PCB hole depth and component clearance for specific board designs.

Q: What packaging options are available?

A: Amphenol ICC (FCI) parts are supplied in bag packaging. Sullins PRPC021DBAN-M71RC is supplied in bulk packaging. Packaging selection does not affect electrical or mechanical performance.

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