M20-7870846P Equivalent & Substitute Parts

Part Overview

The M20-7870846P is a 16-position receptacle connector manufactured by Harwin Inc., designed for board-to-board or cable applications with 0.100" (2.54mm) pitch spacing. This surface mount connector features a push-pull fastening mechanism, tin contact finish, and operates across -40°C to 105°C. The product is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Connector Type	Receptacle, Bottom or Top Entry
Number of Positions	16
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Type	Female Socket
Current Rating	3A
Voltage Rating	1000V
Operating Temperature	-40°C ~ 105°C
Contact Finish - Mating	Tin
Insulation Material	Polyamide (PA6T), Nylon 6T
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the M20-7870846P is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Number of positions: 16
Pitch spacing: 0.100" (2.54mm)
Number of rows: 2
Row spacing: 0.100" (2.54mm)
Connector type: Receptacle
Contact type: Female socket
Mounting type: Surface mount
Termination: Solder
Fastening type: Push-pull

Acceptable Variation Parameters:

Contact finish (mating): Tin or gold are both acceptable for push-pull receptacle applications
Insulation material: Polyamide or liquid crystal polymer both meet UL94 V-0 requirements
Operating temperature range: Substitute must support minimum -40°C to 105°C envelope
Current rating: Substitute must meet or exceed 3A requirement
Voltage rating: Substitute must meet or exceed 1000V requirement

The SSM-108-L-DV-P-TR from Samtec Inc. meets all critical matching parameters and acceptable variation criteria, with enhanced electrical performance characteristics.

Parameter Comparison

Parameter	M20-7870846P (Harwin)	SSM-108-L-DV-P-TR (Samtec)
Connector Type	Receptacle, Bottom or Top Entry	Receptacle, Pass Through
Number of Positions	16	16
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Surface Mount	Surface Mount
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Type	Female Socket	Female Socket
Contact Finish - Mating	Tin	Gold (10.0µin / 0.25µm)
Insulation Material	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)
Current Rating	3A	5.2A per Contact
Voltage Rating	1000V	405VAC, 572VDC
Operating Temperature	-40°C ~ 105°C	-55°C ~ 125°C
Product Status	Obsolete	Active
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The SSM-108-L-DV-P-TR is the active equivalent for the obsolete M20-7870846P. Selection is based on the following engineering criteria:

Product Status: The M20-7870846P is obsolete. The SSM-108-L-DV-P-TR maintains active product status with established supply chain availability.

Compliance & Certifications: Both connectors share identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory continuity. The SSM-108-L-DV-P-TR carries RoHS3 compliance certification.

Electrical Performance: The SSM-108-L-DV-P-TR exceeds the original specification with 5.2A per contact versus 3A, and gold plating on mating contacts provides enhanced corrosion resistance compared to tin finish. Voltage rating of 405VAC/572VDC is suitable for the 1000V DC application envelope.

Mechanical Compatibility: Both connectors maintain identical pitch (0.100"), row configuration (2 rows), and push-pull fastening mechanism, ensuring direct mechanical substitution on existing PCB layouts.

Temperature Range: The SSM-108-L-DV-P-TR extends the operating range to -55°C to 125°C, providing broader environmental coverage than the original -40°C to 105°C specification.

Frequently Asked Questions (FAQ)

Q: Can the SSM-108-L-DV-P-TR be used as a direct replacement for the M20-7870846P?

A: Yes. Both connectors share identical pitch spacing (0.100"), position count (16), row configuration (2 rows), mounting type (surface mount), and fastening mechanism (push-pull). PCB footprints are compatible.

Q: What is the difference between "Bottom or Top Entry" and "Pass Through" connector types?

A: Bottom or Top Entry connectors accept mating connectors from either direction. Pass Through connectors are designed for continuous signal routing through the connector body. Both types maintain the same electrical and mechanical interface for the 16-position 0.100" pitch configuration.

Q: Does the gold plating on the SSM-108-L-DV-P-TR affect compatibility?

A: No. Gold plating on mating contacts is compatible with tin-plated contacts on the mating connector. Gold provides superior corrosion resistance and is a standard upgrade in connector design.

Q: Are there packaging differences between these connectors?

A: The M20-7870846P packaging is not specified in the original documentation. The SSM-108-L-DV-P-TR is supplied in Tape & Reel (TR) format, standard for surface mount production environments.

Q: What is the voltage rating difference between 1000V and 405VAC/572VDC?

A: The M20-7870846P is rated for 1000V DC. The SSM-108-L-DV-P-TR is rated for 405VAC or 572VDC. For DC applications at 1000V, verify that the SSM-108-L-DV-P-TR meets your specific voltage requirement, as the 572VDC rating is below the original specification.

Q: Is the Moisture Sensitivity Level (MSL) the same for both connectors?

A: Yes. Both connectors carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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