MTSW-103-08-T-S-290 Equivalent & Substitute Parts

Part Overview

The MTSW-103-08-T-S-290 is a rectangular connector header manufactured by Samtec Inc. in the Flex Stack, MTSW series. This through-hole connector features 3 positions at 0.100" (2.54mm) pitch and is designed for board-to-board or cable applications. The part is currently active in production with 795 units in stock. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative connector options that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

MTSW-103-08-T-S-290

Samtec Inc.In Stock: 847MTSW-103-08-T-S-290 Datasheet

Current PartRFQ

961103-6804-AR

3MIn Stock: 3288961103-6804-AR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MTSW-103-08-T-S-290 is determined by the following critical parameters:

• Connector type classification (Header)
• Contact type (Male Pin)
• Number of positions (3)
• Mating pitch (0.100" / 2.54mm)
• Mounting method (Through Hole)
• Termination method (Solder)
• Fastening type (Push-Pull)
• Shrouding configuration (Unshrouded)
• Row configuration (1 row)
• Material flammability compliance (UL94 V-0)

The identified substitute part 961103-6804-AR from 3M meets these core functional requirements. Variations in contact length, insulation height, contact finish composition, and operating temperature range represent acceptable engineering tolerances within the rectangular connector category, provided the mating interface and electrical performance remain compatible with the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Both the MTSW-103-08-T-S-290 and 961103-6804-AR are active production parts with UL94 V-0 flammability compliance and RoHS certification status. Selection between these parts should be based on the following criteria:

The MTSW-103-08-T-S-290 is suitable for applications requiring the full operating temperature range of -55°C to 105°C and a current rating of 3A per contact. This part features phosphor bronze contacts with tin plating and polyester glass-filled insulation.

The 961103-6804-AR is suitable for applications operating within the -25°C to 105°C temperature range with a maximum current rating of 2A per contact. This part features copper alloy contacts with gold flash plating and thermoplastic insulation, offering enhanced corrosion resistance at the mating interface.

Both parts share identical mating pitch, position count, mounting method, and fastening mechanism. Dimensional variations in contact length and insulation height are within standard connector manufacturing tolerances for this product category.

Frequently Asked Questions (FAQ)

Q: Can the 961103-6804-AR directly replace the MTSW-103-08-T-S-290 in all applications?

A: Direct replacement is possible when the application operates within the -25°C to 105°C temperature range and does not exceed 2A per contact. If the application requires operation below -25°C or exceeds 2A per contact, the MTSW-103-08-T-S-290 is the appropriate selection.

Q: What is the significance of the contact finish difference between tin and gold?

A: The MTSW-103-08-T-S-290 uses tin plating on mating contacts, while the 961103-6804-AR uses gold flash plating. Gold provides superior corrosion resistance and lower contact resistance in high-reliability applications. Tin is suitable for standard industrial applications with adequate environmental protection.

Q: Are the dimensional differences between these connectors critical?

A: The contact length and insulation height variations between these parts are within standard tolerances for rectangular connectors at 2.54mm pitch. These differences do not affect mating compatibility or electrical performance in standard board-to-board applications. However, applications with tight mechanical constraints should verify clearance with the specific part dimensions.

Q: Do both parts meet the same compliance standards?

A: Both parts are UL94 V-0 rated and RoHS compliant. The MTSW-103-08-T-S-290 carries ROHS3 certification, while the 961103-6804-AR carries standard RoHS certification. Both meet the flammability and hazardous substance restrictions required for industrial and consumer electronics applications.

Q: What is the difference between the insulation materials used?

A: The MTSW-103-08-T-S-290 uses polyester glass-filled insulation, which provides enhanced mechanical strength and dimensional stability. The 961103-6804-AR uses thermoplastic insulation, which offers good electrical properties and processing flexibility. Both materials meet UL94 V-0 flammability requirements.