SMS-134-01-G-D Equivalent & Substitute Parts

Part Overview

The SMS-134-01-G-D is a 68-position receptacle connector manufactured by Samtec Inc., designed for board-to-board applications with 0.050" (1.27mm) pitch spacing. This connector features through-hole solder termination, gold-plated mating contacts, and operates across -55°C to 125°C. The part is currently active in production with 758 units in stock.

Equivalent and substitute parts are identified when they share the same functional electrical and mechanical characteristics: 68 positions, 0.050" pitch, 2-row configuration with 0.100" row spacing, through-hole mounting, push-pull fastening, and board-to-board style. Substitutes enable design flexibility, supply chain alternatives, and compatibility with existing connector ecosystems.

Key Parameters

Parameter	SMS-134-01-G-D
Connector Type	Receptacle
Number of Positions	68
Pitch - Mating	0.050" (1.27mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Style	Board to Board
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 125°C
Current Rating	5A per Contact
Insulation Material	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SMS-134-01-G-D are identified based on strict equivalence of the following core parameters:

Connector Configuration: 68 positions, 2 rows, 0.050" (1.27mm) pitch, 0.100" (2.54mm) row spacing
Mounting & Termination: Through-hole solder termination, push-pull fastening
Application Style: Board-to-board receptacle connector
Contact Interface: Gold-plated mating surface for signal integrity

The identified substitutes are TE Connectivity AMP Connectors parts 1-104078-3 and 6-104078-3, both from the AMPMODU System 50 series. These parts match all core mechanical and electrical configuration parameters, enabling direct functional replacement in applications requiring 68-position 0.050" pitch board-to-board connectivity.

Parameter Comparison

Parameter	SMS-134-01-G-D (Samtec)	1-104078-3 (TE Connectivity)	6-104078-3 (TE Connectivity)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	SMS	AMPMODU System 50	AMPMODU System 50
Number of Positions	68	68	68
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Number of Rows	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Insulation Color	Black	Black	Black
Insulation Height	0.335" (8.51mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Length - Post	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Operating Temperature Range	-55°C ~ 125°C	-65°C ~ 105°C	-65°C ~ 105°C
Current Rating	5A per Contact	1A	1A
Insulation Material	Liquid Crystal Polymer (LCP)	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled
Contact Material	Phosphor Bronze	Copper Alloy	Copper Alloy
Contact Finish - Post	Gold	Tin-Lead	Tin
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant
Product Status	Active	Active	Active
Inventory	758 Pcs	841 Pcs	2488 Pcs

Engineering Selection Recommendations

SMS-134-01-G-D (Samtec): Select this part for applications requiring ROHS3 compliance, higher current capacity (5A per contact), and extended upper operating temperature (125°C). The LCP insulation material provides superior dimensional stability. This part is suitable for high-reliability applications with stringent environmental specifications.

6-104078-3 (TE Connectivity): Select this part as the primary substitute when RoHS compliance is required. This variant maintains RoHS3 compliance status and offers the highest inventory availability (2488 units). The tin post finish eliminates lead content. Operating temperature range is -65°C to 105°C, suitable for most industrial and commercial applications. Current rating is 1A per contact.

1-104078-3 (TE Connectivity): This variant is not recommended for new designs due to RoHS non-compliance status. It is retained as a substitute option only for legacy system maintenance or applications where RoHS compliance is not a requirement. Current rating is 1A per contact with tin-lead post finish.

Frequently Asked Questions (FAQ)

Q: Can SMS-134-01-G-D be directly replaced with 6-104078-3?

A: Yes, for board-to-board applications requiring 68-position 0.050" pitch connectivity. Both parts share identical mechanical configuration, mounting type, and fastening mechanism. The primary design consideration is current rating: SMS-134-01-G-D supports 5A per contact, while 6-104078-3 supports 1A per contact. Applications requiring higher current density must retain the SMS-134-01-G-D.

Q: What are the compliance differences between these parts?

A: SMS-134-01-G-D is ROHS3 compliant. 6-104078-3 is RoHS compliant. 1-104078-3 is RoHS non-compliant. For applications subject to RoHS regulations, 6-104078-3 is the appropriate substitute.

Q: Are there temperature range limitations when substituting?

A: SMS-134-01-G-D operates -55°C to 125°C. Both TE Connectivity substitutes operate -65°C to 105°C. Applications requiring operation above 105°C must use the SMS-134-01-G-D. Applications requiring operation below -55°C can use either TE Connectivity part.

Q: How do insulation materials differ between these connectors?

A: SMS-134-01-G-D uses Liquid Crystal Polymer (LCP), which provides superior dimensional stability and lower moisture absorption. TE Connectivity parts use thermoplastic glass-filled material. For applications with tight mechanical tolerances or high-humidity environments, LCP insulation offers performance advantages.

Q: What is the impact of different contact finish thicknesses?

A: SMS-134-01-G-D has 10.0µin (0.25µm) gold mating finish. TE Connectivity substitutes have 30.0µin (0.76µm) gold mating finish. The thicker gold plating on TE Connectivity parts provides extended contact life and improved corrosion resistance in harsh environments.

Q: Can these parts be intermated in the same application?

A: No. These are receptacle connectors designed to mate with corresponding plug connectors from their respective manufacturers. Samtec SMS series plugs mate with SMS-134-01-G-D receptacles. TE Connectivity AMPMODU System 50 plugs mate with 1-104078-3 and 6-104078-3 receptacles. Mixed mating is not supported.

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