26-01-3114 Spécifications Approfondies : Pas, Montage et Brochage Expliqués
The 26-01-3114 is widely listed in datasheet and distributor summaries as a dual-row, right-angle through-hole PCB header with a 4.2 mm (0.165 in) in‑row pitch and short tails. Mismatches in pitch or pin mapping are common root causes of board re-spins. This guide explains pitch, mount style, and pinout to ensure seamless layout integration.
1 — Background: Technical Identity
1.1 Key Identifier Summary
The part is a dual-row right-angle through-hole header. Distributor summaries consistently list a 4.2 mm pitch. This form factor dictates board hole sizes and row spacing. Material plating notes from listings guide solderability and current capacity decisions.
1.2 Critical Success Factors
Incorrect pitch or mounting angle causes mechanical interference. Failure modes include misaligned pads and insufficient tail engagement. A 0.1 mm offset can prevent full insertion, making strict footprint checks mandatory before fabrication.
2 — Mechanical Specifications
2.1 Pitch and Row Spacing
The in‑row pitch is 4.2 mm (0.165 in). Layouts must use a grid matching this spacing. Recommended land pattern tolerances include ±0.1 mm pad placement to accommodate housing variations.
2.2 Tail Length and Mounting
Short tails require precise through‑hole insertion. Right-angle body profiles necessitate a keepout zone under the component. Verify peg hole locations to avoid obstruction of nearby surface-mount components.
3 — Mounting & PCB Footprint Guide
| Parameter | Specification | Design Note |
|---|---|---|
| Drill Size | Nominal + 0.20mm | Ensure plating tolerance compliance |
| Annular Ring | Min 0.25mm | Supports mechanical stress distribution |
| Thermal Relief | Required | Prevents cold joints during wave solder |
| Keepout | Body Footprint + 1mm | Prevents interference with tall caps |
4 — Pinout & Electrical Considerations
The 26-01-3114 follows a standard dual-row numbering sequence. Document this visually in the schematic. Provide a top-view diagram on the mechanical drawing indicating Pin 1 location and mating orientation. Use the rated current per pin to define trace widths and thermal derating in high-power applications.
5 — Troubleshooting & Assembly
How should designers verify the 26-01-3114 pitch and row spacing?
Cross-reference the datasheet mechanical drawing and distributor dimensional summaries. Confirm the 4.2 mm pitch and row-to-row offset. Implement values in CAD with a ±0.1 mm placement tolerance and run DRC against mechanical keepouts before releasing gerbers.
What drill and pad sizes are recommended for right-angle tails?
Use a drill that gives a snug fit: nominal tail diameter plus ~0.15–0.25 mm. Annular rings of at least 0.25 mm are recommended. Specify thermal reliefs if wave soldering to ensure consistent heat flow.
Which BOM fields prevent incorrect substitutions?
Specify the full part number, pitch (4.2 mm), mounting angle (right‑angle), tail length, and plating. Including a mechanical drawing reference in the BOM locks in critical dimensions for procurement teams.
What are common assembly failures for this part?
Common issues include misaligned pads due to incorrect row spacing and insufficient solder fillets caused by improper wave solder profiles or oversized drill holes. Mechanical failure can occur if locator pegs are omitted from the footprint.
Summary: Successful integration of the 26-01-3114 requires 4.2mm pitch verification, precise drill sizing for short tails, and clear pinout documentation to prevent assembly rework.
