Weidmüller 1003540000 SL-SMT 3.50/05/135F 3.2SN BK BX Guide
The Weidmüller 1003540000 SL-SMT 3.50/05/135F 3.2SN BK BX is a 5-pole male header for pluggable PCB connectivity in compact industrial and professional electronics. Its value lies in delivering a clear, scalable board interface without forcing designers into a bulky connection system. As a Weidmüller 1003540000 PCB plug-in connector male header, it fits the needs of modern board design where space, serviceability, and structured wiring all matter.
Technical identity of the product
This connector is officially described as a flanged male header with THT/THR solder connection, 3.50 mm pitch, 5 poles, 135° orientation, and 3.2 mm solder pin length. It is tinned, black, and supplied in box packaging. Official ratings show IEC 320 V / 15 A and UL 300 V / 10 A, which makes it highly relevant for compact but serious PCB interconnection work.
The 5-pole configuration is particularly useful in electronic assemblies that need a little more circuit grouping flexibility. It can support combinations of power, signalling, reference lines, or control points while maintaining a neat single-connector footprint.
Why the 5-pole format is practical
There are many applications where 2, 3, or 4 poles are simply not enough, yet moving to a much larger connector would compromise PCB space or enclosure design. The Weidmüller SL-SMT 3.50/05/135F 3.2SN BK BX male header sits comfortably in that middle ground. It expands system flexibility while preserving the compact advantages of a 3.50 mm pitch platform.
That makes it a useful choice for building automation electronics, compact drive controls, small I/O modules, measurement equipment, and distributed control interfaces. In all of those cases, a connector has to do more than fit the schematic. It must also fit the physical product and the service workflow.
Mechanical and assembly perspective
The THT/THR solder concept supports dependable board anchoring, which matters when products are assembled in volume or expected to remain stable over years of use. Combined with the 135-degree format, the connector helps designers manage approach direction, mating accessibility, and wiring geometry with more intent.
The flange also contributes to a more controlled connector interface. While small details like this can be overlooked during early design, they often become valuable during integration, testing, and maintenance.
Design strategy and product family value
The Weidmüller 1003540000 SL-SMT 3.50/05/135F 3.2SN BK BX product type becomes even more useful when seen as part of a connector family rather than an isolated part number. That approach lets engineers maintain a consistent connection philosophy across multiple device sizes and feature levels. A product platform can start small and later expand to other pole counts while preserving the same pitch and general mating concept.
Weidmüller 1003540000 For more information about Weidmüller, exploring the broader 3.50 mm PCB connector range is worthwhile when long-term design standardisation is a project goal.
Weidmüller 1003540000 FAQ
What is Weidmüller 1003540000?
It is a 5-pole PCB plug-in connector male header with flange, THT/THR solder connection, 3.50 mm pitch, and 135-degree orientation.
Why would a 5-pole header be selected?
A 5-pole header is useful when the design needs more than a very small connection group but still has to remain compact and easy to integrate on the PCB.
How important is the flange in this design?
The flange can improve mounting consistency and interface stability, especially in applications where precise mating and structured handling are important.
What does the 3.2 mm solder pin length affect?
It affects board integration and should be considered alongside PCB thickness, assembly method, and mechanical fit.
Can this connector support industrial devices?
Yes. Its official ratings and construction align well with the needs of industrial, automation, and other professional electronics applications.
What should engineers verify before adoption?
They should verify counterpart compatibility, board footprint, insulation requirements in the finished product, enclosure geometry, and the effect of the 135-degree approach on wiring access.