TSW-120-14-F-S Equivalent & Substitute Parts Reference

Part Overview

The TSW-120-14-F-S is a Classic PCB Header Strip manufactured by Samtec Inc., designed for through-hole board-to-board or cable connections. This unshrouded header features 20 positions at 0.100" (2.54mm) pitch with male pins, gold-plated mating contacts, and tin-plated posts. The component maintains Active product status with full inventory availability.

Substitute parts become necessary when the primary component experiences supply constraints, when design requirements permit alternative contact configurations, or when system specifications allow for compatible connector architectures with different position counts or contact materials.

Substiute Parts

TSW-120-14-F-S

Samtec Inc.In Stock: 955TSW-120-14-F-S Datasheet

Current PartRFQ

4-103321-0

TE Connectivity AMP ConnectorsIn Stock: 10234-103321-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-120-14-F-S is determined by the following critical parameters:

Primary Compatibility Criteria:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical interchangeability
• Contact Type: Male Pin — determines mating interface compatibility
• Mounting Type: Through Hole — establishes PCB assembly method
• Termination: Solder — defines connection method to PCB
• Connector Type: Header — functional category requirement

Secondary Compatibility Parameters:

• Number of Rows: 1 — single-row configuration
• Shrouding: Unshrouded — physical form factor
• Fastening Type: Push-Pull — mechanical engagement method
• Contact Shape: Square — contact geometry
• Insulation Material: PBT or equivalent thermoplastic — electrical isolation

Acceptable Variation Parameters:

• Number of Positions: May vary based on application requirements
• Contact Finish Materials: Gold or Tin-Lead acceptable for mating surfaces
• Operating Temperature Range: Substitute must meet or exceed application requirements
• Contact Material: Phosphor Bronze or Copper Alloy acceptable

The identified substitute part 4-103321-0 (TE Connectivity AMP Connectors) shares the critical pitch, contact type, mounting method, and termination characteristics. However, this part features 40 positions (versus 20), operates at a reduced temperature range (-65°C ~ 105°C versus -55°C ~ 125°C), and carries Obsolete product status.

Parameter Comparison

Engineering Selection Recommendations

TSW-120-14-F-S Selection Criteria:

• Primary choice for new designs requiring Active product status and long-term supply assurance
• Recommended for applications operating at temperatures above 105°C, as this part supports -55°C ~ 125°C range
• Preferred for ROHS3 compliance-mandatory applications
• Suitable for 20-position connector requirements with gold-plated mating contacts

4-103321-0 Selection Criteria:

• Acceptable only for legacy system maintenance or retrofit applications where supply of original part is unavailable
• Suitable for applications with maximum operating temperature not exceeding 105°C
• Applicable only when 40-position configuration aligns with system requirements
• Not recommended for new designs due to Obsolete product status
• RoHS compliance status undefined; verify regulatory requirements before selection

Substitution Feasibility: The 4-103321-0 shares fundamental connector architecture (0.100" pitch, male pins, through-hole solder termination, single-row unshrouded design) with the TSW-120-14-F-S. However, the 40-position count represents a significant functional difference requiring PCB layout modification. The reduced operating temperature ceiling (105°C maximum versus 125°C) may restrict use in high-temperature environments. Obsolete product status presents long-term supply risk.

Frequently Asked Questions (FAQ)

Q: Can the 4-103321-0 directly replace the TSW-120-14-F-S in existing designs?

A: Direct replacement is not feasible without PCB modification. The 4-103321-0 provides 40 positions versus the TSW-120-14-F-S 20 positions. While both share 0.100" (2.54mm) pitch and through-hole solder termination, the doubled position count requires different PCB footprint and layout. Additionally, the reduced maximum operating temperature (105°C versus 125°C) may not satisfy all application requirements.

Q: What are the critical parameters that must match for header connector substitution?

A: The following parameters must remain identical for mechanical and electrical compatibility: Pitch - Mating (0.100"), Contact Type (Male Pin), Mounting Type (Through Hole), Termination (Solder), Number of Rows (1), and Fastening Type (Push-Pull). Variations in position count, contact finish materials, and contact base materials are acceptable only when application specifications explicitly permit such changes.

Q: Does the Tin-Lead finish on the 4-103321-0 create compatibility issues with the gold-plated TSW-120-14-F-S?

A: Contact finish material differences do not prevent mechanical mating or electrical function. Both gold and tin-lead finishes provide adequate conductivity and corrosion resistance for standard applications. However, gold-plated contacts (TSW-120-14-F-S) offer superior performance in low-signal-level or high-reliability applications. Tin-lead finishes (4-103321-0) are acceptable for general-purpose digital and power applications.

Q: Why is the 4-103321-0 listed as Obsolete?

A: Obsolete product status indicates the manufacturer has discontinued production and no longer provides technical support or supply guarantees. This classification creates long-term availability risk and makes the part unsuitable for new design implementations. Existing inventory may be available through authorized distributors, but future procurement cannot be assured.

Q: What is the significance of ROHS3 compliance on the TSW-120-14-F-S?

A: ROHS3 compliance certifies that the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. This certification is mandatory for products sold into European markets and increasingly required by global OEMs. The 4-103321-0 shows "Not applicable" RoHS status, indicating it predates or falls outside current compliance frameworks.

Q: Can the 4-103321-0 be used in applications requiring -55°C minimum operating temperature?

A: The 4-103321-0 specifies -65°C minimum operating temperature, which exceeds the -55°C requirement of the TSW-120-14-F-S. Therefore, the substitute part is acceptable for low-temperature performance. However, the substitute's maximum operating temperature ceiling of 105°C is lower than the TSW-120-14-F-S maximum of 125°C, which may restrict use in elevated-temperature environments.

Q: Are there packaging or inventory considerations when selecting between these parts?

A: Both parts are available in Bulk packaging. The TSW-120-14-F-S shows 929 pieces in current inventory with Active status, ensuring supply availability. The 4-103321-0 shows 980 pieces available but carries Obsolete status, indicating this represents existing stock without replenishment capability. For production planning, the TSW-120-14-F-S provides superior long-term supply assurance.