MTSW-112-21-L-S-1240-LL Equivalent & Substitute Parts

Part Overview

The MTSW-112-21-L-S-1240-LL is a rectangular connector header manufactured by Samtec Inc. in the Flex Stack MTSW series. This through-hole mounted connector features 12 positions at 0.100" (2.54mm) pitch with male pins, kinked pin solder termination, and gold-plated mating contacts. The product is active and in stock with 1106 units available. Finding equivalent or substitute parts may be necessary for design flexibility, supply chain optimization, or specific application requirements.

Substiute Parts

MTSW-112-21-L-S-1240-LL

Samtec Inc.In Stock: 1160MTSW-112-21-L-S-1240-LL Datasheet

Current PartRFQ

MTSW-112-21-L-S-1240-LL

Samtec Inc.In Stock: 1160MTSW-112-21-L-S-1240-LL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the MTSW-112-21-L-S-1240-LL is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for PCB footprint compatibility
• Number of Positions: 12 — determines circuit connectivity requirements
• Number of Rows: 1 — defines the physical layout and mounting footprint
• Contact Type: Male Pin — specifies the mating interface
• Mounting Type: Through Hole — determines PCB assembly method
• Termination: Kinked Pin, Solder — defines the connection method to the PCB
• Contact Length - Mating: 1.240" (31.50mm) — affects mating depth and mechanical fit
• Contact Length - Post: 0.090" (2.29mm) — determines solder joint length on PCB
• Operating Temperature Range: -55°C ~ 125°C — establishes thermal performance requirements
• Current Rating: 3A — specifies electrical load capacity
• Contact Finish: Gold (mating) and Tin (post) — ensures electrical performance and solderability

Parts meeting all these parameters are considered direct equivalents or substitutes.

Parameter Comparison

Engineering Selection Recommendations

The MTSW-112-21-L-S-1240-LL is an active product with full compliance to ROHS3 and REACH standards. The part carries UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating, indicating suitability for standard industrial and commercial applications without special handling requirements.

Selection of equivalent parts should prioritize components with identical electrical and mechanical specifications as listed in the parameter comparison table. The 0.100" (2.54mm) pitch, 12-position single-row configuration, and through-hole solder termination are fixed design requirements that cannot be altered without PCB redesign.

Compliance certifications (ROHS3, REACH, UL94 V-0) should be verified for any substitute part to ensure regulatory alignment with the original design intent.

Frequently Asked Questions (FAQ)

Q: What makes a part a direct substitute for the MTSW-112-21-L-S-1240-LL?

A: A direct substitute must match all critical parameters: 12 positions, 1 row, 0.100" (2.54mm) pitch, male pin contact type, through-hole mounting, kinked pin solder termination, 1.240" (31.50mm) mating contact length, 0.090" (2.29mm) post length, square contact shape, gold mating finish with tin post finish, phosphor bronze contact material, polyester glass-filled insulation, -55°C to 125°C operating range, and 3A current rating.

Q: Can I use a different pitch connector as a substitute?

A: No. The 0.100" (2.54mm) pitch is a fixed design parameter. Using a different pitch connector requires PCB redesign and is not a substitute application.

Q: Are there position count variations available?

A: The MTSW-112-21-L-S-1240-LL is a 12-position connector. Different position counts (such as 2, 3, 4, 6, or 8 positions) are separate part numbers within the MTSW series and are not substitutes for this specific model.

Q: What is the significance of the kinked pin termination?

A: Kinked pin termination provides mechanical retention during PCB assembly and solder reflow. This termination style is specific to the MTSW-112-21-L-S-1240-LL design and must be matched in any substitute part.

Q: Does the contact finish affect substitution compatibility?

A: Yes. The gold mating finish and tin post finish are specified for electrical performance and solderability. Substitute parts must maintain these exact finish specifications.

Q: Is the MTSW-112-21-L-S-1240-LL suitable for high-temperature applications?

A: The operating temperature range is -55°C to 125°C. Applications requiring operation outside this range require a different connector model.

Q: What is the current-carrying capacity per contact?

A: The connector is rated for 3A per contact. Applications requiring higher current capacity per contact require a different connector series.

Q: Are there packaging options other than bulk?

A: The MTSW-112-21-L-S-1240-LL is supplied in bulk packaging. Packaging format is not a substitution parameter for electrical or mechanical compatibility.