Molex 0873811217 Equivalent & Substitute Parts

Part Overview

The Molex 0873811217 is a 12-position receptacle connector from the Milli-Grid 87381 series, designed for surface mount board-to-board applications. This connector features 0.079" (2.00mm) pitch mating contacts with gold plating, push-pull fastening, and operates across -55°C to 105°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and connector geometry align with the original specification.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	12
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Voltage Rating	125V
Current Rating	1.9A
Operating Temperature	-55°C ~ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the Molex 0873811217 are qualified based on the following critical parameters:

12-position receptacle configuration with female socket contacts
0.079" (2.00mm) mating pitch and row spacing
2-row arrangement for board-to-board connectivity
Surface mount solder termination with push-pull fastening
Gold-plated mating contacts
ROHS3 compliance and MSL 1 rating

The substitute parts are grouped into two categories:

Category 1: Hirose Electric A3 Series (A3-12DA-2SV(71), A3A-12DA-2SV(71)) These connectors maintain the core 12-position, 2.00mm pitch receptacle configuration with push-pull fastening. Both parts are ROHS3 compliant with MSL 1 rating. The A3A variant includes board guide features matching the original design.

Category 2: Samtec Tiger Eye™ SMM Series (SMM-106-02-S-D-K, SMM-106-02-S-D-K-TR, SMM-106-02-S-D-LC, SMM-106-02-S-D-P-TR) These connectors share the 12-position, 2.00mm pitch receptacle configuration with surface mount termination and push-pull fastening. All variants are ROHS3 compliant with MSL 1 rating. Packaging options include tube, tape & reel, and cut tape formats.

Parameter Comparison

Parameter	Molex 0873811217	Hirose A3-12DA-2SV(71)	Hirose A3A-12DA-2SV(71)	Samtec SMM-106-02-S-D-K	Samtec SMM-106-02-S-D-K-TR	Samtec SMM-106-02-S-D-LC	Samtec SMM-106-02-S-D-P-TR
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	12	12	12	12	12	12	12
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)
Number of Rows	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Insulation Color	Black	Brown	Brown	Black	Black	Black	Black
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
Voltage Rating	125V	200VAC	200VAC	350VAC	350VAC	350VAC	350VAC
Current Rating	1.9A	1A	1A	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the Molex 0873811217.

Hirose A3 Series Selection: The A3-12DA-2SV(71) and A3A-12DA-2SV(71) are suitable for applications where the operating temperature range of -55°C to 85°C is acceptable. The A3A-12DA-2SV(71) includes board guide features, providing mechanical alignment equivalent to the original part. Current rating of 1A per contact is lower than the original 1.9A specification; applications requiring higher current density should be evaluated against actual circuit requirements.

Samtec Tiger Eye™ SMM Series Selection: The SMM-106 variants offer extended operating temperature range (-55°C to 125°C) and higher current rating (3.2A per contact) with elevated voltage rating (350VAC). These characteristics provide performance margin above the original specification. Packaging options accommodate different manufacturing workflows: tube packaging (SMM-106-02-S-D-K, SMM-106-02-S-D-LC), tape & reel (SMM-106-02-S-D-K-TR), and cut tape with Digi-Reel® (SMM-106-02-S-D-P-TR). The SMM-106-02-S-D-LC variant includes board lock features for enhanced mechanical retention.

Frequently Asked Questions (FAQ)

Q: Can Hirose A3 series connectors directly replace the Molex 0873811217?

A: Yes, mechanically and electrically. Both A3-12DA-2SV(71) and A3A-12DA-2SV(71) maintain the 12-position, 2.00mm pitch configuration with identical row spacing and push-pull fastening. The A3A variant includes board guide features matching the original design. Operating temperature range is -55°C to 85°C versus the original -55°C to 105°C; applications operating above 85°C require evaluation.

Q: What are the key differences between Samtec SMM-106 packaging variants?

A: All SMM-106 variants share identical electrical and mechanical specifications. Packaging differences are: SMM-106-02-S-D-K (tube), SMM-106-02-S-D-K-TR (tape & reel), SMM-106-02-S-D-LC (tube with board lock), and SMM-106-02-S-D-P-TR (tape & reel with pick and place). Selection depends on manufacturing equipment and assembly process requirements.

Q: Are there current rating limitations when substituting with Hirose A3 connectors?

A: Hirose A3 series is rated at 1A per contact versus the original 1.9A. For applications requiring the full 1.9A per contact, Samtec SMM-106 variants rated at 3.2A per contact are recommended.

Q: Do all substitute parts meet the same compliance standards as the original?

A: Yes. All listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the original Molex 0873811217 compliance profile.

Q: Which substitute offers the widest operating temperature range?

A: Samtec Tiger Eye™ SMM series connectors operate from -55°C to 125°C, providing 20°C additional margin above the original -55°C to 105°C specification.

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