TSS-113-04-SS-D-RA

FAQFrequently Asked Questions

• What are the key design considerations when selecting the TSS-113-04-SS-D-RA for a new board-to-board interconnect application? The TSS-113-04-SS-D-RA is a 26-position right-angle header with 0.100" (2.54mm) pitch and dual-row configuration, making it suitable for applications requiring moderate pin density with standard spacing. Key considerations include: the right-angle mounting reduces board-to-board stack height compared to vertical headers, the shrouded 4-wall design provides alignment and partial EMI shielding during mating, and the push-pull fastening mechanism allows repeatable connect/disconnect cycles without tools. However, the through-hole termination requires PCB layout planning to accommodate the 0.130" post length on the component side. Verify your application's thermal and vibration environment, as the TSS-113-04-SS-D-RA operates from -55°C to 125°C and the mechanical fastening design suits controlled industrial settings rather than high-vibration applications.
• Can the TSS-113-04-SS-D-RA be used as a direct replacement for legacy 26-pin 2.54mm pitch connectors from other manufacturers? The TSS-113-04-SS-D-RA shares the standard 0.100" (2.54mm) pitch with many legacy connectors, but compatibility requires verification of several factors. The dual-row, right-angle configuration with 4-wall shrouding is specific to Samtec's Flex Stack TSS series, so it differs mechanically from straight headers, angled headers from other manufacturers (such as TE Connectivity or Molex alternatives), or single-row designs. Before substitution, confirm: (1) the mating connector on your daughter board or cable assembly matches the TSS-113-04-SS-D-RA's footprint and keying slot orientation, (2) the right-angle geometry fits your enclosure or stack height constraints, and (3) the push-pull locking mechanism is compatible with your assembly workflow. Direct mechanical and electrical replacement is possible only if the original design used an identical Samtec TSS series header; otherwise, significant PCB redesign or cable harness modifications may be necessary.
• What factors should be evaluated when migrating from a vertical stacking header to the TSS-113-04-SS-D-RA right-angle configuration? Migration from vertical to right-angle headers involves trade-offs in form factor and assembly complexity. The TSS-113-04-SS-D-RA reduces the vertical stack-up by eliminating the connector overhang above the PCB, which is advantageous in space-constrained enclosures. However, the right-angle design introduces a lateral footprint offset; verify that your main PCB layout can accommodate the connector's profile extending horizontally from the board edge. The shrouded 4-wall design of the TSS-113-04-SS-D-RA improves keying alignment compared to open headers, reducing insertion errors during assembly and field maintenance. The gold-plated mating contacts (30.0µin thickness) and tin-plated posts provide reliable solder joints and repeatable electrical performance over multiple mating cycles. When planning the migration, account for potential changes in the daughter board connector footprint, silkscreen labeling, and test probe access during production and debugging.
• How does the TSS-113-04-SS-D-RA perform in thermal cycling and high-temperature industrial environments? The TSS-113-04-SS-D-RA is rated for continuous operation from -55°C to 125°C, and the polybutylene terephthalate (PBT) insulation material with UL94 V-0 flammability rating meets industrial durability standards. The phosphor bronze contact material exhibits stable electrical resistance across the temperature range, though the gold plating thickness (30.0µin, or 0.76µm) is relatively thin and may show accelerated wear in high-cycle mating applications or environments with corrosive gases. For long-term reliability in thermal cycling scenarios: (1) design the PCB layout to minimize thermal stress on the solder joints by balancing copper weight around the through-hole posts, (2) consider conformal coating if the environment includes moisture or salt spray, and (3) perform thermal shock testing (-55°C to 125°C) on prototypes to verify the mechanical integrity of the push-pull locking tabs and the solder connection under repeated expansion cycles. The MSL-1 (moisture sensitivity level 1) classification indicates the TSS-113-04-SS-D-RA is not affected by moisture absorption and requires no special storage or reflow precautions.
• What are the electrical limitations and considerations for the TSS-113-04-SS-D-RA in signal integrity and power delivery applications? The TSS-113-04-SS-D-RA datasheet does not specify voltage or current ratings, which indicates the connector is designed for signal-level applications rather than high-power distribution. The dual-row, 26-position configuration is typical for parallel data buses, microcontroller I/O breakout, and moderate-speed digital signaling. For signal integrity: (1) the 0.100" row spacing and right-angle orientation may introduce moderate crosstalk between adjacent rows if high-speed or high-impedance differential signals are routed through the connector; layout the PCB traces to maintain controlled impedance and minimize loop areas, (2) the shrouded design provides partial shielding but is not a fully shielded connector, so sensitive analog or RF signals may require additional filtering or shielding on the daughter board, and (3) the gold plating on mating contacts ensures low contact resistance for digital logic levels. If the application requires power distribution (such as 5V or 3.3V bulk supply to a daughter card), calculate the total current and distribute it across multiple pins; contact Samtec directly to verify the thermal performance and acceptable current per pin contact. For high-frequency applications above 10 MHz, verify signal integrity through simulation or prototype testing.
• How should the TSS-113-04-SS-D-RA be handled during PCB assembly to avoid damage to the through-hole posts and solder joints? The TSS-113-04-SS-D-RA has through-hole termination with 0.130" posts, which requires careful PCB assembly planning. During manufacturing: (1) verify that the PCB hole diameter is sized correctly (typically 0.035" to 0.040" for a standard 0.025" diameter post, depending on your assembly partner's tolerances), (2) use appropriate solder paste thickness and reflow profile to ensure complete wetting without solder bridges between the closely-spaced rows, and (3) avoid mechanical stress on the connector during wave soldering or hand-soldering by using a solder pot temperature no higher than 260°C and minimizing dwell time. The 4-wall shrouding stabilizes the connector during the reflow process but may trap solder voids if the PCB layout does not provide adequate drain holes or if the thermal profile is too rapid. After reflow, inspect the solder joints visually or with X-ray to confirm no cold joints or inadequate fillets on the posts. During assembly and testing, avoid pulling or twisting the connector laterally, as the push-pull locking tabs are the primary mechanical retention; excessive side loading may crack the solder joint or damage the locking tabs.
• What is the expected mating cycle life of the TSS-113-04-SS-D-RA, and how does it compare to sealed or latched connector alternatives? The TSS-113-04-SS-D-RA uses a push-pull fastening mechanism designed for repeatable field connect/disconnect cycles. While Samtec does not publish a specific mating cycle rating in the standard datasheet, the phosphor bronze contact material and gold plating (30.0µin) are typical for headers rated between 50 and 100 mating cycles in consumer and industrial applications. The actual cycle life depends on: (1) the mating force and alignment during each insertion, (2) the cleanliness of the contacts and any contamination (moisture, dust, or corrosion), and (3) the care taken during disconnection to avoid contact damage or plating wear. For applications requiring higher cycle life (500+ cycles) or harsh environments, consider alternatives such as Samtec's sealed or latched variants, TE Connectivity's sealed circular connectors, or panel-mount connectors with improved mechanical durability. The TSS-113-04-SS-D-RA is well-suited for development boards, lab equipment, and production rigs where reconnection cycles are occasional and controlled, but may not be appropriate for field-replaceable module scenarios with frequent user intervention.
• Are there keying or orientation constraints when integrating the TSS-113-04-SS-D-RA with the mating connector? The TSS-113-04-SS-D-RA includes a keying slot as noted in the product specifications, which prevents incorrect insertion of the mating connector and reduces assembly errors. The keying mechanism is integral to the Samtec Flex Stack TSS series design. When specifying the mating connector, verify that: (1) the corresponding receptacle (such as TSR, SFSD, or other Samtec series) has the complementary keyed pin arrangement, (2) the keying slot is oriented correctly relative to your PCB layout and the intended mating direction, and (3) the mating connector's body and locking tabs align with the TSS-113-04-SS-D-RA's shrouded walls. Misaligned keying or forced insertion can damage the contact tines and render the connector unusable. During design, label the PCB silkscreen with the mating orientation (e.g., "Connector A" with an arrow) and include a mechanical drawing showing the keying orientation for assembly and field technicians. If the application requires redundant boards with different orientations or if personnel might attempt reverse insertion, consider using keyed connectors from a different series or adding mechanical stops on the enclosure.
• What are the PCB layout and routing guidelines for the TSS-113-04-SS-D-RA to ensure reliable solder joints and minimize cross-talk between the two rows? The TSS-113-04-SS-D-RA has a 0.100" (2.54mm) row spacing, which is relatively wide by modern standards but requires deliberate layout planning for signal integrity. Guidelines include: (1) position the connector near the PCB edge to minimize trace routing congestion and allow the right-angle body to extend outside the board perimeter, (2) route traces from each row independently to avoid the bus bar effect and minimize coupling between rows—do not run parallel traces from Pin 1-13 (top row) and Pin 14-26 (bottom row) in close proximity without guard traces, (3) for signal pairs or differential pairs, keep traces tightly coupled and use consistent impedance control through the connector transition zone, (4) provide vias with adequate spacing (at least 0.050" from the connector pad edge) to prevent solder flow during reflow, and (5) design the solder pad layout with appropriate trace width (typically 0.010" to 0.015" for 2oz copper) to support controlled wetting and minimize stress on the through-hole post. The dual-row configuration and 0.100" pitch allow standard PCB fabrication houses to produce the design without special design rules, but validate your stackup and impedance with simulation if routing high-speed signals (above 50 MHz) through the connector.
• Can the TSS-113-04-SS-D-RA be used in combination with cable assemblies, and what are the considerations for strain relief and long-term mechanical stability? The TSS-113-04-SS-D-RA is a header designed for board-to-board interconnection, not for direct cable connection. The connector is rated as a "Board to Board or Cable" style, meaning a mating receptacle on a cable harness or pigtail can mate with it, but the header itself does not have integral cable strain relief. When designing a cable assembly for the TSS-113-04-SS-D-RA: (1) source a compatible mating connector from Samtec (such as TSR or another series) that includes cable retention and strain relief features, (2) ensure the cable exit angle is vertical or slightly angled to minimize bending stress on the mating connector's locking tabs and the solder joints on the PCB, (3) secure the cable near the PCB using cable clips or sleeving to prevent flexing at the connection point, and (4) avoid routing high-current power lines through the same cable sheath as low-voltage signal lines without adequate shielding. For field-serviceable applications with frequent cable changes, consider Samtec's secured latch versions or molded connectors that provide better mechanical retention than push-pull fastening. Test the cable assembly under thermal cycling (-55°C to 125°C) and vibration if it will be used in mobile or industrial equipment to verify that the solder joints do not fail due to cyclic stress.
• How does the TSS-113-04-SS-D-RA compare to alternatives such as Molex Pico-Lock or TE Connectivity AMP connectors for a compact design-in? The TSS-113-04-SS-D-RA (0.100" pitch, dual-row, 26-position, right-angle) is positioned in the standard-pitch header category, whereas Molex Pico-Lock headers (2.0mm pitch) and TE Connectivity AMP connectors (typically 2.54mm or 3.96mm pitch) serve overlapping but distinct markets. Comparison factors: (1) the TSS-113-04-SS-D-RA's 0.100" pitch and shrouded 4-wall design offer good keying and moderate density suitable for microcontroller breakouts and lab equipment, whereas Pico-Lock offers higher density (1.25mm or 1.5mm pitch alternatives) at the cost of fine-pitch soldering and assembly difficulty, (2) TE AMP connectors often include sealed or shielded variants for harsh environments, while the TSS-113-04-SS-D-RA is suitable for controlled environments but lacks environmental sealing, (3) the TSS-113-04-SS-D-RA's push-pull fastening is tool-free and consumer-friendly, whereas TE and Molex alternatives may require latches or clips that necessitate assembly fixtures, and (4) cost and availability differ: Samtec TSS headers are widely stocked by distributors such as Digi-Key and Mouser, and the standard 2.54mm pitch benefits from low manufacturing costs. For a compact design-in, if space permits the 0.100" pitch and your environment does not require sealed connectors, the TSS-113-04-SS-D-RA offers a practical trade-off between cost, assembly simplicity, and density compared to Pico-Lock or military-grade alternatives.
• What are the RoHS3 compliance implications for the TSS-113-04-SS-D-RA, and are there any material restrictions or documentation requirements for aerospace or automotive applications? The TSS-113-04-SS-D-RA is confirmed RoHS3 compliant, indicating the connector meets the Restriction of Hazardous Substances Directive (EU 2015/863) and does not contain prohibited substances such as lead, cadmium, or hexavalent chromium above specified thresholds. For industrial applications within the EU or for customers requiring RoHS compliance, this designation simplifies regulatory approvals and procurement. However, for aerospace (AS9100, nadcap) or automotive (ISO/TS 16949, AEC-Q200) applications, additional material certifications and traceability documentation may be required beyond basic RoHS3 compliance. The TSS-113-04-SS-D-RA does not carry aerospace qualification (such as JPL or military grade), so if your application is for airborne or space equipment, contact Samtec directly to verify alternative qualified connector series. The ECCN classification (EAR99) indicates the connector is not subject to U.S. export controls, but clarify export compliance for your specific end-use market. For automotive applications, confirm with your OEM whether the TSS-113-04-SS-D-RA meets their specific connector standards (such as CCC or other regional automotive standards); if not, Samtec offers qualified automotive series connectors as alternatives.