SMS-140-01-S-D Equivalent & Substitute Parts

Part Overview

The SMS-140-01-S-D is an 80-position receptacle connector manufactured by Samtec Inc., designed for board-to-board applications with 0.050" (1.27mm) pitch mating. This connector features forked contacts with gold mating finish and through-hole solder termination, operating across -55°C to 125°C. The part is active in production with ROHS3 compliance and MSL 1 rating, making it suitable for high-reliability applications requiring standard rectangular connector interfaces.

Alternative models may be required due to inventory constraints, specific application requirements, or design revisions necessitating compatible connector solutions with equivalent electrical and mechanical characteristics.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	80
Pitch - Mating	0.050" (1.27mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Current Rating	5A per Contact
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMS-140-01-S-D must maintain compatibility across the following critical parameters:

Connector Configuration: 80-position receptacle with 2-row arrangement
Mating Interface: 0.050" (1.27mm) pitch with 0.100" (2.54mm) row spacing
Electrical Performance: Gold-plated mating contacts with solder termination
Mounting Standard: Through-hole PCB mounting with push-pull fastening
Environmental Compliance: ROHS3 compliance and MSL 1 rating

The SMS-140-01-S-D and 5-104078-7 share identical position count, pitch, row spacing, mounting type, and termination method. Both maintain gold contact finish on mating surfaces and support through-hole solder attachment. Compliance certifications (ROHS3, MSL 1) are equivalent across both parts.

Parameter Comparison

Parameter	SMS-140-01-S-D (Samtec)	5-104078-7 (TE Connectivity)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors
Series	SMS	AMPMODU System 50
Connector Type	Receptacle	Receptacle
Number of Positions	80	80
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Insulation Color	Black	Black
Contact Length - Post	0.100" (2.54mm)	0.100" (2.54mm)
Operating Temperature	-55°C ~ 125°C	-65°C ~ 105°C
Current Rating (Amps)	5A per Contact	1A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Fastening Type	Push-Pull	Push-Pull
Inventory Status	1132 Pcs New Original In Stock	1464 Pcs New Original In Stock

Engineering Selection Recommendations

Both SMS-140-01-S-D and 5-104078-7 are active production parts with ROHS3 compliance and MSL 1 ratings, suitable for applications requiring unlimited moisture exposure without baking requirements.

The SMS-140-01-S-D supports 5A per contact current rating across an operating temperature range of -55°C to 125°C. The 5-104078-7 operates across -65°C to 105°C with a 1A per contact current rating. Selection between these parts depends on application-specific current and temperature requirements. Both connectors maintain identical mechanical interfaces (80 positions, 0.050" pitch, 2-row configuration) and gold-plated mating contacts with equivalent contact finish thickness.

Frequently Asked Questions (FAQ)

Q: Can SMS-140-01-S-D and 5-104078-7 be used interchangeably in all applications?

A: Both connectors share identical mechanical and mating interfaces (80 positions, 0.050" pitch, 0.100" row spacing, through-hole solder termination). However, current rating and operating temperature ranges differ. SMS-140-01-S-D supports 5A per contact and -55°C to 125°C operation, while 5-104078-7 supports 1A per contact and -65°C to 105°C operation. Selection must align with application current and temperature requirements.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by: connector type (receptacle), position count (80), mating pitch (0.050"), row configuration (2 rows with 0.100" spacing), mounting method (through-hole), termination type (solder), contact finish (gold), and fastening mechanism (push-pull). Deviations in any of these parameters affect mechanical fit and electrical performance.

Q: Are both parts compliant with RoHS and moisture sensitivity requirements?

A: Yes. Both SMS-140-01-S-D and 5-104078-7 are ROHS3 compliant and carry MSL 1 rating, indicating unlimited moisture exposure tolerance without baking requirements prior to assembly.

Q: What is the difference in contact material between these connectors?

A: SMS-140-01-S-D uses phosphor bronze contacts, while 5-104078-7 uses copper alloy contacts. Both are plated with gold on mating surfaces at equivalent thickness (30.0µin / 0.76µm).

Q: How do insulation materials differ between these parts?

A: SMS-140-01-S-D uses Liquid Crystal Polymer (LCP) insulation, while 5-104078-7 uses thermoplastic glass-filled insulation. Both materials support the specified operating temperature ranges and provide equivalent mechanical stability for through-hole mounting applications.

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