TMS-125-02-G-D-RA Equivalent & Substitute Parts

Part Overview

The TMS-125-02-G-D-RA is a .050" (1.27mm) micro header connector manufactured by Samtec Inc., designed for board-to-board applications with through-hole, right-angle mounting. This 50-position, 2-row rectangular connector features solder termination and push-pull fastening. The part is currently active in production with 999 pieces available in stock. Alternative components may be required due to supply constraints, design revisions, or specific application requirements that necessitate evaluation of functionally equivalent options.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.050" (1.27mm)
Number of Positions	50
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TMS-125-02-G-D-RA is permissible with components that maintain the following critical parameters:

Pitch - Mating: 0.050" (1.27mm)
Number of Positions: 50
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Termination: Solder
Fastening Type: Push-Pull
Material Flammability Rating: UL94 V-0
RoHS Status: ROHS3 Compliant

The substitute part 5-104118-1 (TE Connectivity AMP Connectors) satisfies all critical substitution criteria. Both components are board-to-board rectangular connectors with identical mating pitch, position count, row configuration, and mounting orientation. Both maintain UL94 V-0 flammability compliance and ROHS3 certification, ensuring regulatory equivalence for applications requiring these standards.

Parameter Comparison

Parameter	TMS-125-02-G-D-RA (Samtec)	5-104118-1 (TE Connectivity)
Manufacturer	Samtec Inc.	TE Connectivity AMP Connectors
Series	TMS	AMPMODU System 50
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Number of Positions	50	50
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.100" (2.54mm)	0.125" (3.18mm)
Contact Length - Post	0.140" (4.66mm)	0.100" (2.54mm)
Insulation Height	0.197" (5.00mm)	0.216" (5.49mm)
Contact Shape	Square	Circular
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Gold	Tin
Contact Material	Phosphor Bronze	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP)	Thermoplastic
Operating Temperature	-55°C ~ 125°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating (Amps)	5A per Contact	Not specified
Voltage Rating	Not specified	30VAC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both the TMS-125-02-G-D-RA and 5-104118-1 are active production components with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following provided specifications:

The TMS-125-02-G-D-RA operates across a wider temperature range (-55°C to 125°C) compared to the 5-104118-1 (-65°C to 105°C). Applications requiring sustained operation above 105°C or below -55°C should prioritize the Samtec component.

The TMS-125-02-G-D-RA specifies a current rating of 5A per contact, while the 5-104118-1 does not provide this specification. Applications with defined current requirements should reference the Samtec part's rating.

The 5-104118-1 specifies a voltage rating of 30VAC; the TMS-125-02-G-D-RA does not provide voltage specification. Applications with defined voltage requirements should reference the TE Connectivity part's rating.

Physical differences exist in contact length, insulation height, contact shape, and insulation material. PCB layout and mating connector compatibility must be evaluated based on specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5-104118-1 be used as a direct replacement for the TMS-125-02-G-D-RA?

A: Both components share identical mating pitch (0.050"), position count (50), row configuration (2 rows), row spacing (0.100"), mounting type (through-hole right-angle), termination method (solder), and fastening type (push-pull). Both maintain UL94 V-0 and ROHS3 compliance. However, differences in contact length, insulation height, contact shape, and insulation material require evaluation against specific PCB layout and mating connector specifications.

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

A: The TMS-125-02-G-D-RA features square contacts with phosphor bronze material and LCP insulation, operating from -55°C to 125°C with a 5A per contact current rating. The 5-104118-1 features circular contacts with copper alloy material and thermoplastic insulation, operating from -65°C to 105°C with a 30VAC voltage rating. Contact length and insulation height also differ between the two parts.

Q: Are both parts available in the same packaging?

A: Both the TMS-125-02-G-D-RA and 5-104118-1 are supplied in tube packaging.

Q: Which part should I select for high-temperature applications?

A: The TMS-125-02-G-D-RA supports operation up to 125°C, compared to 105°C for the 5-104118-1. For applications requiring sustained operation above 105°C, the Samtec component is the appropriate selection.

Q: Do these connectors have different moisture sensitivity levels?

A: Both components have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating equivalent moisture handling requirements.

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