TSW-133-14-L-S Equivalent & Substitute Parts

Part Overview

The TSW-133-14-L-S is a rectangular connector header manufactured by Samtec Inc., classified as a through-hole vertical mount connector with 33 positions at 0.100" (2.54mm) pitch. This connector is designed for board-to-board or cable applications with male pin contacts and solder termination. The part maintains Active product status with full inventory availability.

Substitute parts become necessary when the primary part reaches end-of-life status, supply constraints occur, or design requirements necessitate alternative connector configurations. The substitute identified in this reference operates under similar electrical and mechanical parameters while accommodating different position counts and material specifications.

Substiute Parts

TSW-133-14-L-S

Samtec Inc.In Stock: 768TSW-133-14-L-S Datasheet

Current PartRFQ

4-103321-0

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

MFR RecommendedRFQ

4-103321-0

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TSW-133-14-L-S is based on the following critical parameters that must align between the main part and substitute:

Mandatory Matching Parameters:

• Pitch - Mating: 0.100" (2.54mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Shape: Square
• Shrouding: Unshrouded
• Style: Board to Board or Cable
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Number of Positions: The substitute part (4-103321-0) contains 40 positions compared to the main part's 33 positions. This variation is acceptable when the application circuit design accommodates the additional contact positions or when unused positions are left unloaded.
• Contact Finish Materials: The substitute uses Tin-Lead finish versus the main part's Gold mating finish with Tin post finish. Both finishes provide electrical conductivity and solder compatibility.
• Insulation Height: Substitute measures 0.090" (2.29mm) versus main part 0.100" (2.54mm). This minor dimensional difference remains within mechanical tolerance for board-level integration.
• Operating Temperature Range: Substitute operates -65°C ~ 105°C versus main part -55°C ~ 125°C. The substitute's lower upper temperature limit requires verification for applications exceeding 105°C.
• Product Status: The substitute is classified as Obsolete, whereas the main part is Active. This status difference indicates reduced future availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (TSW-133-14-L-S):

The TSW-133-14-L-S maintains Active product status with confirmed inventory of 694 pieces in stock. This part achieves ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for commercial and industrial applications. The gold-plated mating contacts provide enhanced corrosion resistance and contact reliability. The operating temperature range of -55°C to 125°C accommodates extended environmental conditions. Selection of this part is appropriate for new designs and applications requiring long-term supply continuity.

Substitute Part Selection (4-103321-0):

The 4-103321-0 substitute from TE Connectivity AMP Connectors shares critical electrical and mechanical parameters with the main part, including identical 0.100" (2.54mm) pitch, through-hole solder termination, and push-pull fastening. However, this part carries Obsolete product status, indicating discontinued manufacturing and limited future availability despite current inventory of 980 pieces.

The substitute accommodates 40 positions compared to the main part's 33 positions. This configuration difference requires circuit design modification to either utilize the additional seven contact positions or leave them unloaded. The lower operating temperature upper limit of 105°C versus the main part's 125°C restricts use in high-temperature applications. The Tin-Lead contact finish differs from the main part's gold finish, affecting contact resistance characteristics and corrosion performance in certain environments.

RoHS compliance status differs between parts: the main part is ROHS3 compliant while the substitute shows "Not applicable" status. REACH status is also undefined for the substitute, creating potential regulatory uncertainty for applications subject to chemical substance restrictions.

Selection Criteria:

• For new designs and applications requiring regulatory compliance certainty: Select TSW-133-14-L-S
• For legacy system repairs or retrofits where 40-position configuration is acceptable: 4-103321-0 remains functionally compatible within specified operating parameters
• For applications operating above 105°C: TSW-133-14-L-S is required
• For applications requiring gold-plated contacts: TSW-133-14-L-S is required

Frequently Asked Questions (FAQ)

Q: Can the 4-103321-0 substitute directly replace the TSW-133-14-L-S in existing designs?

A: Direct replacement requires circuit design review. The substitute contains 40 positions versus 33 positions in the main part. If the application uses all 33 positions, the additional seven positions on the substitute remain unused but do not prevent mechanical or electrical function. The lower operating temperature maximum of 105°C must be verified against application requirements.

Q: What is the significance of the contact finish difference between Gold and Tin-Lead?

A: Contact finish affects electrical performance and environmental durability. Gold provides superior corrosion resistance and lower contact resistance, particularly in humid or corrosive environments. Tin-Lead finish is cost-effective and suitable for standard industrial applications but offers less corrosion protection. Selection depends on environmental exposure and contact reliability requirements.

Q: Why is the substitute listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. While current inventory exists (980 pieces), future availability is not guaranteed. For applications requiring long-term supply security, the Active status TSW-133-14-L-S is the appropriate choice.

Q: Are there mechanical compatibility issues between the two parts?

A: Minor dimensional variations exist. The substitute's insulation height is 0.090" (2.29mm) versus the main part's 0.100" (2.54mm), and the post contact length differs by 0.015" (0.39mm). These variations remain within standard PCB mounting tolerances for 0.100" pitch connectors. Overall contact length differs by only 0.003" (0.09mm), which is negligible for board-level integration.

Q: What compliance certifications apply to each part?

A: The TSW-133-14-L-S is ROHS3 compliant and REACH Unaffected. The 4-103321-0 substitute shows "Not applicable" for RoHS status and "Vendor Undefined" for REACH status. Both parts carry UL94 V-0 flammability rating and EAR99 export classification. For applications subject to RoHS or REACH regulations, the main part is the compliant choice.

Q: Can unused positions on the 40-position substitute create electrical issues?

A: Unused positions do not create electrical issues. The connector design accommodates all 40 positions regardless of whether they are loaded with contacts. Unloaded positions remain as open cavities in the insulation body and do not affect signal integrity or electrical performance of loaded positions.

Q: What is the current rating difference between the parts?

A: The main part (TSW-133-14-L-S) does not specify a current rating. The substitute (4-103321-0) specifies 3A per contact. For applications requiring current capacity verification, the substitute's 3A rating provides a defined electrical limit. The main part's unspecified rating suggests it may support higher current capacity, but this must be confirmed through Samtec technical documentation.

Q: Are there any voltage rating specifications for these connectors?

A: Neither the main part nor the substitute specifies a voltage rating in the provided parameters. Both connectors are designed for standard logic-level and low-voltage applications typical of board-to-board interconnection. Applications requiring high-voltage isolation or dielectric strength specifications require consultation of detailed manufacturer datasheets.