M20-7832142 Equivalent & Substitute Parts

Part Overview

The M20-7832142 is a 42-position receptacle connector manufactured by Harwin Inc., designed for 0.100" (2.54mm) pitch through-hole applications with gold-plated mating contacts. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity. The part serves general purpose, industrial, and telecommunications applications requiring board-to-board or cable connectivity with push-pull fastening.

Key Parameters

Parameter	M20-7832142
Connector Type	Receptacle
Number of Positions	42
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Current Rating	3A
Voltage Rating	1000V
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M20-7832142 is determined by strict alignment with the following core parameters:

42-position configuration with 2-row layout at 0.100" (2.54mm) pitch
Through-hole solder termination with push-pull fastening
Receptacle connector type with female socket contacts
Board-to-board or cable connectivity style
UL94 V-0 flammability rating compliance
RoHS3 compliance status

Substitute parts are grouped into two categories based on connector type:

Category A: Receptacle Connectors — Direct functional equivalents maintaining receptacle configuration. These parts preserve the original connector type and are suitable for direct replacement in existing designs.

Category B: Header Connectors — Functional alternatives with header configuration. These parts require mating interface consideration but maintain electrical and mechanical compatibility through standardized pitch and position geometry.

Parameter Comparison

Parameter	M20-7832142 (Harwin)	0015445142 (Molex)	66956-021LF (Amphenol ICC)	87606-321LF (Amphenol ICC)	87606-421LF (Amphenol ICC)	PPPC212LFBN-RC (Sullins)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Header
Number of Positions	42	42	42	42	42	42
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)
Number of Rows	2	2	2	2	2	2
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)
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 Finish - Mating	Gold	Gold	Gold	Gold	Tin	Gold
Insulation Color	Black	Black	Black	Blue	Blue	Black
Insulation Height	0.335" (8.51mm)	0.340" (8.64mm)	0.325" (8.25mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.335" (8.51mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	0.118" (3.00mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.126" (3.20mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 125°C	-65°C ~ 125°C	Not Specified	Not Specified	-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
Current Rating (Amps)	3A	2.5A	Not Specified	Not Specified	Not Specified	3A
Voltage Rating	1000V	500VAC	1250V	Not Specified	Not Specified	250V
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: 0015445142 (Molex C-Grid 71850)

The Molex 0015445142 is the preferred substitute for the M20-7832142. This part maintains receptacle configuration, achieves ROHS3 compliance, and is in active production status. The connector supports -40°C to 125°C operating temperature, exceeding the original specification. Current rating of 2.5A is within acceptable tolerance for most applications, though designs requiring the full 3A specification should be evaluated. Voltage rating of 500VAC is lower than the original 1000V specification and must be confirmed for high-voltage applications.

Secondary Recommendation: 66956-021LF (Amphenol ICC Dubox™ BergCon® PV™)

The Amphenol ICC 66956-021LF provides receptacle configuration with the highest voltage rating (1250V) among substitutes, suitable for high-voltage applications. Extended operating temperature range (-65°C to 125°C) supports demanding thermal environments. RoHS compliance is confirmed. Current rating is not specified and must be confirmed for applications requiring rated current capacity.

Alternative Recommendation: 87606-321LF (Amphenol ICC Dubox™)

The Amphenol ICC 87606-321LF maintains receptacle configuration with gold mating contact finish matching the original specification. RoHS compliance is confirmed. Operating temperature and current/voltage ratings are not specified and must be confirmed for critical applications. Insulation color differs (blue vs. black), which may affect visual identification in production environments.

Header Configuration Alternative: PPPC212LFBN-RC (Sullins Connector Solutions)

The Sullins PPPC212LFBN-RC provides header configuration with 42 positions at 0.100" pitch. This part achieves ROHS3 compliance and matches the original 3A current rating and -40°C to 105°C operating temperature. Voltage rating of 250V is significantly lower than the original specification. Header configuration requires mating with receptacle connectors and is suitable only for applications where connector type flexibility exists.

Frequently Asked Questions (FAQ)

Q: Can the M20-7832142 be directly replaced with the Molex 0015445142?

A: Yes, the Molex 0015445142 is a direct functional replacement. Both are 42-position receptacle connectors with 0.100" pitch, through-hole solder termination, and push-pull fastening. Verify that the 2.5A current rating and 500VAC voltage rating meet your application requirements, as these differ from the original specification.

Q: What is the difference between receptacle and header connectors in this product line?

A: Receptacle connectors (M20-7832142, 0015445142, 66956-021LF, 87606-321LF, 87606-421LF) accept mating pins from a complementary connector. Header connectors (PPPC212LFBN-RC) provide the pins themselves and mate with receptacle connectors. Selection depends on your board layout and mating connector requirements.

Q: Why does the Amphenol ICC 87606-421LF have tin mating contact finish instead of gold?

A: The 87606-421LF is specified with tin mating contact finish, which differs from the original gold specification. Tin finish provides different electrical and corrosion characteristics. Use this part only if your application design accommodates tin contact finish or if gold finish is not required.

Q: Are all substitute parts RoHS compliant?

A: Yes, all substitute parts listed are RoHS compliant. The M20-7832142 and PPPC212LFBN-RC achieve ROHS3 compliance. The Amphenol ICC parts (66956-021LF, 87606-321LF, 87606-421LF) are RoHS compliant. Molex 0015445142 is ROHS3 compliant.

Q: What should I consider when selecting between substitute parts?

A: Prioritize connector type (receptacle vs. header) based on your mating interface requirements. Verify that current rating, voltage rating, and operating temperature range meet your application specifications. Confirm that insulation material and contact finish are compatible with your design. All listed parts maintain the 42-position, 0.100" pitch, through-hole solder termination, and push-pull fastening of the original part.

Q: Can I use the Sullins PPPC212LFBN-RC header connector in place of the M20-7832142 receptacle?

A: The Sullins PPPC212LFBN-RC is a header connector and cannot directly replace a receptacle connector. Use this part only if your design accommodates header configuration and you have a compatible receptacle connector for mating. The 250V voltage rating is significantly lower than the original 1000V specification.

Q: What is the significance of the different insulation heights and contact lengths among substitute parts?

A: Insulation height and contact length affect mechanical fit and stacking height in multi-connector assemblies. The M20-7832142 specifies 0.335" insulation height and 0.118" contact length. Substitute parts vary slightly (insulation height range: 0.325" to 0.340"; contact length range: 0.114" to 0.126"). Verify mechanical compatibility with your PCB layout and mating connectors before selection.

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