TSW-135-14-F-D Equivalent & Substitute Parts

Part Overview

The TSW-135-14-F-D is a classic PCB header strip manufactured by Samtec Inc., designed for through-hole board-to-board or cable connections. This unshrouded, two-row connector features 70 positions at 0.100" (2.54mm) pitch with gold-plated mating contacts and tin-plated posts. The part maintains Active product status with 1103 units currently in stock.

Substitute parts become necessary when the TSW-135-14-F-D reaches end-of-life, when inventory constraints occur, or when design requirements permit alternative configurations within the same electrical and mechanical parameter envelope. The substitute identified in this reference—the TE Connectivity 4-103322-0—shares core mating characteristics but carries Obsolete product status, requiring careful evaluation before selection.

Substiute Parts

TSW-135-14-F-D

Samtec Inc.In Stock: 1148TSW-135-14-F-D Datasheet

Current PartRFQ

4-103322-0

TE Connectivity AMP ConnectorsIn Stock: 9194-103322-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TSW-135-14-F-D is based on the following critical parameters that must align between the main part and any substitute:

Critical Matching Parameters:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Rows: 2
• Row Spacing - Mating: 0.100" (2.54mm)
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder

Allowable Variation Parameters:

• Number of Positions: Substitutes may differ if application permits (TSW-135-14-F-D has 70 positions; substitute 4-103322-0 has 80 positions)
• Contact Finish: Variations permitted if electrical performance remains equivalent
• Insulation Material: Variations permitted if thermal and chemical properties remain suitable
• Operating Temperature Range: Substitutes must maintain minimum -55°C ~ 125°C or demonstrate suitability for actual application requirements

The identified substitute, TE Connectivity 4-103322-0, matches all critical parameters but introduces position count variance (80 vs. 70) and product status change (Obsolete vs. Active). This substitute is suitable only for applications where the additional 10 positions do not create PCB layout conflicts and where Obsolete status acceptance is documented.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TSW-135-14-F-D (Samtec Inc.)

The TSW-135-14-F-D remains the preferred selection based on:

• Active product status with confirmed availability (1103 units in stock)
• ROHS3 compliance for current regulatory requirements
• Operating temperature range of -55°C ~ 125°C suitable for industrial and commercial applications
• Gold-plated mating contacts providing superior corrosion resistance and contact reliability
• Phosphor bronze contact material with established performance history

Conditional Substitute: 4-103322-0 (TE Connectivity AMP Connectors)

The 4-103322-0 may be considered only when all of the following conditions are met:

1. Position Count Variance Acceptance: The application design permits use of an 80-position connector in place of the 70-position original. PCB layout must accommodate the additional 10 positions without creating electrical or mechanical conflicts.

2. Temperature Range Verification: The application operating environment does not exceed 105°C. The substitute's upper temperature limit of 105°C is 20°C lower than the main part's 125°C rating.

3. Contact Finish Compatibility: The application environment is compatible with tin-lead contact finish. The substitute's tin-lead finish differs from the main part's gold finish and may exhibit different corrosion resistance characteristics in specific environments (humidity, salt spray, chemical exposure).

4. Insulation Height Tolerance: PCB mating interface design accommodates the 0.010" (0.25mm) reduction in insulation height (0.090" vs. 0.100"). This variance may affect mating force and alignment.

5. Post Length Accommodation: PCB assembly process and component clearance requirements accommodate the 0.015" (0.38mm) longer post length (0.125" vs. 0.110").

6. Obsolete Status Documentation: Design change documentation explicitly approves use of an Obsolete product with limited future availability. Supply chain risk assessment confirms acceptable inventory buffer.

7. RoHS Compliance Verification: If ROHS3 compliance is required for the end application, the substitute's "Not applicable" RoHS status must be evaluated against actual regulatory requirements. The tin-lead finish may introduce lead content concerns.

Substitution Not Recommended if the application requires:

• Guaranteed long-term availability and supply continuity
• Operating temperatures above 105°C
• ROHS3 compliance certification
• Gold-plated contact finish for corrosion-critical environments
• Exact 70-position configuration without PCB redesign

Frequently Asked Questions (FAQ)

Q1: Can the 4-103322-0 (80 positions) be used as a direct replacement for the TSW-135-14-F-D (70 positions)?

A: No, not without PCB redesign. While the pitch (0.100"), row spacing (0.100"), and connector type (header) are identical, the 80-position substitute is physically longer than the 70-position original. Direct substitution requires verification that the additional 10 positions do not create conflicts with adjacent PCB components, traces, or mechanical features. If the PCB layout has sufficient space, the substitute can be used with the understanding that only 70 of the 80 positions will be populated, leaving 10 positions unused.

Q2: What is the significance of the contact finish difference (gold vs. tin-lead)?

A: Contact finish affects electrical performance, corrosion resistance, and environmental suitability. The main part's gold-plated mating contacts provide superior corrosion resistance, lower contact resistance, and better performance in humid or chemically aggressive environments. The substitute's tin-lead finish is suitable for standard indoor applications but may exhibit higher contact resistance and reduced corrosion resistance in harsh environments. Gold finish also provides better long-term reliability for high-reliability applications. The choice depends on the application environment and performance requirements.

Q3: Why is the operating temperature range different between the two parts?

A: The TSW-135-14-F-D operates from -55°C to 125°C, while the 4-103322-0 operates from -65°C to 105°C. The substitute has a lower upper temperature limit (105°C vs. 125°C), which may be a limiting factor for applications requiring operation at elevated temperatures. The substitute's lower lower temperature limit (-65°C vs. -55°C) is not typically a constraint for most applications. If the application requires sustained operation above 105°C, the substitute is not suitable.

Q4: What does "Obsolete" product status mean for the 4-103322-0?

A: Obsolete status indicates that TE Connectivity has discontinued active production and support for the 4-103322-0. This means: (1) future availability is limited to existing inventory; (2) technical support from the manufacturer may be unavailable; (3) design changes or improvements will not be implemented; (4) long-term supply cannot be guaranteed. Use of Obsolete parts requires documented approval and supply chain risk assessment. The part may still function correctly but carries supply continuity risk.

Q5: Are the insulation height and post length differences significant?

A: Yes, both differences require evaluation. The insulation height variance (0.100" vs. 0.090") of 0.010" may affect mating interface alignment and force characteristics. The post length variance (0.110" vs. 0.125") of 0.015" may affect PCB assembly clearance, solder joint formation, and component stacking height. These differences are small but may be critical in space-constrained designs or high-density PCB layouts. Verify that the PCB design accommodates these dimensional variations.

Q6: Is the 4-103322-0 RoHS compliant?

A: The 4-103322-0 lists "Not applicable" for RoHS status, which indicates that TE Connectivity did not certify this Obsolete part against current RoHS requirements. The tin-lead contact finish may contain lead, which is restricted under ROHS3. If ROHS3 compliance is required for the end application or market, the substitute may not be acceptable. Verify regulatory requirements before selecting this part.

Q7: What is the significance of the "Breakaway" feature on the 4-103322-0?

A: The 4-103322-0 is listed as "Header, Breakaway," indicating that individual positions can be separated or broken away from the main connector body. The TSW-135-14-F-D does not include this feature. The breakaway capability may be advantageous for applications requiring modular or customizable connector configurations but is not necessary for standard board-to-board connections. This feature does not affect electrical compatibility.

Q8: Can I use only 70 of the 80 positions on the 4-103322-0?

A: Yes, electrically and mechanically. If the PCB layout accommodates the longer connector body, you can populate only 70 of the 80 positions, leaving 10 positions empty. However, this approach wastes connector real estate and may create mechanical imbalance or alignment issues. This approach is acceptable only if the PCB design has sufficient space and the application does not require the additional positions.

Q9: What is the contact material difference between phosphor bronze and copper alloy?

A: Phosphor bronze (main part) and copper alloy (substitute) are both suitable contact materials but have different mechanical and electrical properties. Phosphor bronze typically offers better spring properties, fatigue resistance, and contact force consistency. Copper alloy may offer different electrical conductivity or cost characteristics. For standard applications, both materials are functionally equivalent, but phosphor bronze is generally preferred for high-reliability applications requiring consistent contact force over many mating cycles.

Q10: Should I redesign my PCB to use the 4-103322-0, or should I wait for TSW-135-14-F-D availability?

A: This decision depends on project timeline, supply constraints, and risk tolerance. If TSW-135-14-F-D inventory is available (1103 units confirmed in stock), no redesign is necessary. If supply is constrained and project timeline is critical, PCB redesign to accommodate the 4-103322-0 may be justified only if: (1) the additional 10 positions do not create layout conflicts; (2) the lower temperature rating (105°C) is acceptable; (3) Obsolete status risk is documented and approved; (4) RoHS compliance requirements are verified. Generally, maintaining the original part specification is preferred for long-term product support and supply continuity.