Molex 0873813618 Equivalent & Substitute Parts

Part Overview

The Molex 0873813618 is a 36-position receptacle connector from the Milli-Grid 87381 series, designed for board-to-board applications with 0.079" (2.00mm) pitch spacing. This surface mount connector features gold-plated mating contacts, push-pull fastening, and operates across -55°C to 105°C. The part is active in production and ROHS3 compliant, making it suitable for automotive, general purpose, and telecommunications applications. Equivalent parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications requiring identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	36
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 0873813618 are identified based on strict equivalence of the following critical parameters: connector type (receptacle), number of positions (36), mating pitch (0.079" / 2.00mm), number of rows (2), row spacing (0.079" / 2.00mm), mounting type (surface mount), fastening type (push-pull), contact finish (gold), and termination method (solder). The Samtec SMM-118-02-S-D-LC meets these core mechanical and electrical requirements, enabling direct substitution in applications where the specified parameters are mandatory for PCB layout and mating interface compatibility.

Parameter Comparison

Parameter	Molex 0873813618	Samtec SMM-118-02-S-D-LC
Manufacturer	Molex	Samtec Inc.
Series	Milli-Grid 87381	Tiger Eye™ SMM
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	36	36
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	15.0µin (0.38µm)	30.0µin (0.76µm)
Insulation Color	Black	Black
Insulation Height	0.157" (4.00mm)	0.140" (4.66mm)
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C
Current Rating	1.9A	3.2A per Contact
Voltage Rating	125V	350VAC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both the Molex 0873813618 and Samtec SMM-118-02-S-D-LC are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The Samtec substitute provides enhanced electrical performance with higher current rating (3.2A per contact versus 1.9A) and extended voltage rating (350VAC versus 125V), along with an expanded operating temperature range (-55°C to 125°C versus -55°C to 105°C). Selection between these parts should be based on application-specific electrical requirements and PCB layout constraints, as the Samtec part exhibits a slightly reduced insulation height (0.140" versus 0.157"). Both parts maintain identical mechanical interface specifications for board-to-board connectivity.

Frequently Asked Questions (FAQ)

Q: Can the Samtec SMM-118-02-S-D-LC directly replace the Molex 0873813618 in existing designs?

A: Direct mechanical and electrical substitution is supported for applications operating within the Molex part's original specifications (125V, 1.9A, -55°C to 105°C). The identical pitch, row spacing, number of positions, and mounting type ensure PCB compatibility. The reduced insulation height of the Samtec part (0.140" versus 0.157") must be evaluated against available board clearance.

Q: What are the key differences between these two parts?

A: The primary differences are contact finish thickness (Samtec provides 30.0µin versus Molex 15.0µin), current rating (Samtec 3.2A per contact versus Molex 1.9A), voltage rating (Samtec 350VAC versus Molex 125V), operating temperature range (Samtec -55°C to 125°C versus Molex -55°C to 105°C), and insulation height (Samtec 0.140" versus Molex 0.157").

Q: Are both parts suitable for automotive applications?

A: The Molex 0873813618 is specified for automotive applications. The Samtec SMM-118-02-S-D-LC does not list automotive in its applications field; however, both parts meet ROHS3 compliance and have identical core mechanical specifications. Application suitability should be determined based on specific automotive qualification requirements.

Q: What is the significance of the contact finish thickness difference?

A: The Samtec part features thicker gold plating on mating contacts (30.0µin versus 15.0µin), which may provide enhanced durability and wear resistance in high-cycle mating applications.

Q: Do these connectors require specific handling or storage conditions?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message