Molex 0873812418 Equivalent & Substitute Parts

Part Overview

The Molex 0873812418 is a 24-position receptacle connector in the Milli-Grid 87381 series, designed for surface mount board-to-board applications. This connector features 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The part is active and in production with 671 units currently in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct functional replacement in applications where the connector serves the same role within system constraints.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	24
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1.9A
Voltage Rating	125V
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are qualified based on the following critical parameters that determine functional equivalence:

24-position receptacle configuration with female socket contacts
0.079" (2.00mm) mating pitch and row spacing
Surface mount solder termination with push-pull fastening
Gold-plated mating contact finish
Operating temperature range compatibility
Voltage and current rating sufficiency

The substitute parts listed below meet these core electrical and mechanical criteria. Variations in contact finish thickness, insulation material, insulation height, and packaging format represent design alternatives within the same functional class.

Parameter Comparison

Parameter	Molex 0873812418	Hirose A3-24DA-2SV(71)	Hirose A3A-24DA-2SV(71)	Samtec SMM-112-02-F-D	Samtec SMM-112-02-L-D	Samtec SMM-112-02-S-D-K-TR	Samtec SMM-112-02-S-D-LC	Samtec SMM-112-02-S-D-P-TR	Samtec SMM-112-02-S-D-TR
Manufacturer	Molex	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	24	24	24	24	24	24	24	24	24
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	15.0µin (0.38µm)	8.00µin (0.203µm)	8.00µin (0.203µm)	3.00µin (0.076µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Insulation Color	Black	Brown	Brown	Black	Black	Black	Black	Black	Black
Insulation Height	0.157" (4.00mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.140" (4.66mm)	0.140" (4.66mm)	0.140" (4.66mm)	0.140" (4.66mm)	0.140" (4.66mm)	0.140" (4.66mm)
Operating Temperature	-55°C ~ 105°C	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1.9A	1A	1A	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact
Voltage Rating	125V	200VAC	200VAC	350VAC	350VAC	350VAC	350VAC	350VAC	350VAC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Tube	Tube	Tube	Tube	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All substitute parts listed are active products with RoHS compliance status. Selection between substitutes depends on application-specific requirements:

Hirose A3 Series (A3-24DA-2SV(71), A3A-24DA-2SV(71)): These parts operate at reduced maximum temperature (-55°C ~ 85°C) and lower current rating (1A) compared to the main part. The A3A variant includes board guide features. Both are suitable for general purpose and telecommunications applications where temperature and current requirements do not exceed these limits.

Samtec Tiger Eye SMM Series (SMM-112-02-F-D, SMM-112-02-L-D, SMM-112-02-S-D-K-TR, SMM-112-02-S-D-LC, SMM-112-02-S-D-P-TR, SMM-112-02-S-D-TR): These parts offer extended operating temperature range (-55°C ~ 125°C) and higher current capacity (3.2A per contact). Voltage rating is 350VAC. Packaging options include tube and tape & reel formats. The SMM-112-02-S-D-K-TR and SMM-112-02-S-D-P-TR variants include pick-and-place features for automated assembly. The SMM-112-02-S-D-LC includes board lock features.

All parts maintain the core 24-position, 0.079" pitch, surface mount solder termination, and push-pull fastening configuration required for functional equivalence.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the Molex 0873812418?

A: Substitutes must maintain 24-position receptacle configuration, 0.079" (2.00mm) mating pitch and row spacing, surface mount solder termination, push-pull fastening, and gold-plated mating contacts. Operating temperature, current, and voltage ratings must meet or exceed application requirements.

Q: Can Hirose A3 series parts replace the Molex connector in all applications?

A: Hirose A3 series parts are suitable only for applications where operating temperature does not exceed 85°C and current per contact does not exceed 1A. Applications requiring the full -55°C ~ 105°C temperature range or 1.9A current rating require Samtec SMM series alternatives.

Q: What is the difference between Samtec SMM-112 variants?

A: Samtec SMM-112 variants differ in packaging format (tube vs. tape & reel), contact finish thickness, and optional features. SMM-112-02-S-D-K-TR and SMM-112-02-S-D-P-TR include pick-and-place features for automated assembly. SMM-112-02-S-D-LC includes board lock features. All variants maintain identical electrical specifications and 0.079" pitch configuration.

Q: Are tape & reel packaged parts (TR) compatible with tube packaged applications?

A: Tape & reel packaging is designed for automated pick-and-place assembly. Tube packaging is suitable for manual or semi-automated assembly. The connector itself is identical; packaging format affects assembly process and handling only.

Q: Do all substitute parts meet RoHS compliance requirements?

A: All listed substitute parts are RoHS compliant. The Molex main part and Hirose A3-24DA-2SV(71) are ROHS3 compliant. Hirose A3A-24DA-2SV(71) is RoHS compliant. All Samtec SMM-112 variants are ROHS3 compliant.

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