TMM-105-02-G-S Equivalent & Substitute Parts

Part Overview

The TMM-105-02-G-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications requiring vertical board-to-board or cable connections. This 5-position connector operates at 3.2A per contact with gold-plated mating surfaces and phosphor bronze contacts. The part is active in production and ROHS3 compliant, making it suitable for industrial and commercial applications across the -55°C to 125°C operating range.

Substitute parts become necessary when addressing supply constraints, lead time requirements, or specific application needs while maintaining electrical and mechanical compatibility within the rectangular connector category.

Key Parameters

Parameter	Value
Manufacturer Part Number	TMM-105-02-G-S
Manufacturer	Samtec Inc.
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	5
Pitch - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Current Rating	3.2A per Contact
Operating Temperature	-55°C ~ 125°C
Insulation Material	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the TMM-105-02-G-S is determined by the following critical parameters:

Connector Type: Header configuration
Contact Type: Male Pin
Number of Positions: 5
Pitch - Mating: 0.079" (2.00mm)
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Insulation Height: 0.059" (1.50mm)
Contact Shape: Square
Insulation Color: Black
RoHS Status: ROHS3 Compliant

The four Harwin Inc. M22 series parts (M22-2010505, M22-2010546, M22-2510505, M22-2510546) meet these core compatibility criteria. Variations in contact finish (gold vs. tin), contact length specifications, and current rating must be evaluated against specific application requirements.

Parameter Comparison

Parameter	TMM-105-02-G-S	M22-2010505	M22-2010546	M22-2510505	M22-2510546
Manufacturer	Samtec Inc.	Harwin Inc.	Harwin Inc.	Harwin Inc.	Harwin Inc.
Connector Type	Header	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable
Number of Positions	5	5	5	5	5
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Contact Finish - Mating	Gold	Gold	Tin	Gold	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T
Insulation Height	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)
Contact Shape	Square	Square	Square	Square	Square
Current Rating	3.2A per Contact	1A per Contact	1A per Contact	1A per Contact	1A per Contact
Operating Temperature	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Contact Length - Mating	0.146" (3.71mm)	0.138" (4.60mm)	0.138" (4.60mm)	0.138" (4.60mm)	0.138" (4.60mm)
Contact Length - Post	0.118" (3.00mm)	0.134" (3.40mm)	0.134" (3.40mm)	0.091" (2.30mm)	0.091" (2.30mm)
Overall Contact Length	0.323" (8.20mm)	0.331" (8.40mm)	0.331" (8.40mm)	0.287" (7.30mm)	0.287" (7.30mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts maintain active production status and ROHS3 compliance, ensuring regulatory alignment with the original TMM-105-02-G-S specification.

Gold-Plated Mating Surface Options: M22-2010505 and M22-2510505 provide gold contact finish matching the original part's mating surface specification. M22-2010505 maintains the higher operating temperature range (-55°C ~ 105°C) compared to M22-2510505 (-40°C ~ 105°C).

Tin-Plated Mating Surface Options: M22-2010546 and M22-2510546 feature tin contact finish with identical operating temperature ranges to their gold-plated counterparts.

Current Rating Consideration: All Harwin M22 series substitutes are rated at 1A per contact, compared to the TMM-105-02-G-S rating of 3.2A per contact. Applications requiring the full 3.2A per contact capability must retain the original Samtec part.

Contact Length Variations: M22-2010505 and M22-2010546 provide overall contact lengths of 0.331" (8.40mm), while M22-2510505 and M22-2510546 provide 0.287" (7.30mm). The original TMM-105-02-G-S measures 0.323" (8.20mm). Board layout and mating depth requirements determine appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can M22 series connectors directly replace the TMM-105-02-G-S in all applications?

A: M22 series parts maintain mechanical and electrical compatibility for the 5-position, 2.00mm pitch header configuration. However, the reduced current rating (1A vs. 3.2A per contact) and lower maximum operating temperature on some variants (-40°C vs. -55°C minimum) require application-specific evaluation.

Q: What is the difference between M22-2010505 and M22-2510505?

A: Both parts feature identical pitch, position count, and contact finish (gold). The primary differences are contact post length (0.134" vs. 0.091") and minimum operating temperature (-55°C vs. -40°C). M22-2010505 is suitable for wider temperature range applications.

Q: Why do some M22 variants use tin finish instead of gold?

A: M22-2010546 and M22-2510546 provide tin-plated mating surfaces as an alternative to gold plating. Both finishes are ROHS3 compliant. Contact finish selection depends on application requirements for corrosion resistance and contact reliability.

Q: Are the M22 connectors cuttable, and does this affect compatibility?

A: M22 series headers feature cuttable design, allowing field modification of position count. This feature does not affect compatibility with the 5-position configuration and provides additional flexibility for custom applications.

Q: What inventory levels are available for substitute parts?

A: M22-2010505 maintains 57,941 units in stock, M22-2510505 maintains 6,624 units, M22-2010546 maintains 1,670 units, and M22-2510546 maintains 2,538 units. The original TMM-105-02-G-S has 1,135 units available.

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