TMM-108-02-S-D Equivalent & Substitute Parts

Part Overview

The TMM-108-02-S-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This vertical header features 16 positions arranged in 2 rows with 2.00mm pitch spacing. The connector is actively produced and maintains full RoHS3 compliance with MSL 1 rating, making it suitable for standard industrial and commercial applications requiring reliable solder termination and push-pull fastening.

Substitute parts become necessary when addressing supply chain constraints, inventory availability, or specific application requirements that align with alternative connector geometries and electrical ratings within the same functional category.

Substiute Parts

TMM-108-02-S-D

Samtec Inc.In Stock: 950TMM-108-02-S-D Datasheet

Current PartRFQ

M22-2020805

Harwin Inc.In Stock: 1304M22-2020805 Datasheet

SimilarRFQ

M22-2520805

Harwin Inc.In Stock: 1049M22-2520805 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMM-108-02-S-D is determined by strict alignment of the following core parameters:

Critical Matching Parameters:

• Pitch - Mating: 0.079" (2.00mm)
• Number of Positions: 16
• Number of Rows: 2
• Row Spacing - Mating: 0.079" (2.00mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Material: Phosphor Bronze
• Contact Finish - Mating: Gold

The identified substitute parts M22-2020805 and M22-2520805 from Harwin Inc. satisfy all critical matching parameters. Both maintain the same 2.00mm pitch, 16-position configuration, 2-row arrangement, and solder termination methodology. Both are manufactured from phosphor bronze with gold mating contact finish and employ push-pull fastening mechanisms.

Variations in contact length dimensions and insulation material composition (Polyamide PA6T vs. Liquid Crystal Polymer) do not preclude substitution when the mating interface geometry and electrical contact characteristics remain functionally equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both M22-2020805 and M22-2520805 are active production parts from Harwin Inc. with full RoHS3 compliance and MSL 1 rating, meeting the same regulatory and environmental standards as the primary TMM-108-02-S-D component.

Selection between substitute options depends on application-specific requirements:

M22-2020805 maintains contact post length of 0.134" (3.40mm), providing geometry closer to the original TMM-108-02-S-D specification of 0.118" (3.00mm). This variant is suitable for applications where post length consistency with existing board layouts is prioritized.

M22-2520805 features a shorter contact post length of 0.091" (2.30mm), resulting in reduced overall contact length of 0.287" (7.30mm). This configuration is applicable to space-constrained designs or applications requiring minimal board-to-connector height.

Both Harwin substitutes incorporate cuttable header functionality, enabling field customization of position count if required. Both maintain UL94 V-0 flammability certification.

Current rating differences must be evaluated against circuit requirements. The TMM-108-02-S-D supports 3.2A per contact, while both Harwin substitutes are rated at 1A per contact. Applications exceeding 1A per contact require retention of the original Samtec component.

Operating temperature range narrows with Harwin substitutes (-40°C to 105°C versus -55°C to 125°C). Applications requiring extended temperature operation below -40°C or above 105°C necessitate the original TMM-108-02-S-D specification.

Frequently Asked Questions (FAQ)

Q: Can M22-2020805 or M22-2520805 be used as direct replacements for TMM-108-02-S-D in existing designs?

A: Both Harwin parts maintain identical pitch (2.00mm), position count (16), row configuration (2), and contact geometry (square, phosphor bronze, gold-plated). Mating interface compatibility is established. Verification of contact post length requirements and current rating adequacy is necessary before implementation.

Q: What is the primary difference between M22-2020805 and M22-2520805?

A: The primary distinction is contact post length. M22-2020805 provides 0.134" (3.40mm) post length, while M22-2520805 provides 0.091" (2.30mm) post length. Overall contact length differs correspondingly: 0.331" (8.40mm) versus 0.287" (7.30mm). Selection depends on available board-to-connector mounting depth.

Q: Are there current rating limitations when substituting with Harwin parts?

A: Yes. The original TMM-108-02-S-D supports 3.2A per contact. Both M22-2020805 and M22-2520805 are rated at 1A per contact. Applications requiring current delivery exceeding 1A per contact must retain the original Samtec specification.

Q: Do the substitute parts support the same operating temperature range?

A: No. The TMM-108-02-S-D operates from -55°C to 125°C. Both Harwin substitutes operate from -40°C to 105°C. Applications requiring operation below -40°C or above 105°C require the original component.

Q: What is the significance of the "Cuttable" designation on Harwin parts?

A: The cuttable header feature permits field separation of individual positions or position groups from the main connector body. This functionality enables customization of connector pin count without requiring alternative part numbers, provided the mating interface geometry remains compatible.

Q: Are all three parts RoHS3 compliant?

A: Yes. TMM-108-02-S-D, M22-2020805, and M22-2520805 all maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What insulation material differences exist between the primary and substitute parts?

A: The TMM-108-02-S-D uses Liquid Crystal Polymer (LCP) insulation. Both Harwin substitutes use Polyamide (PA6T), Nylon 6T insulation. Both materials provide adequate electrical insulation and mechanical support for the specified applications. The Harwin parts additionally carry UL94 V-0 flammability certification.