Weidmüller 1003730000 SL-SMT 3.50/23/135F 3.2SN BK BX PCB Header
The Weidmüller 1003730000 SL-SMT 3.50/23/135F 3.2SN BK BX is a 23-pole male PCB header intended for compact pluggable board connection in industrial and electronic devices. It is the kind of component that becomes important when designers move from concept diagrams to actual manufacturable hardware. On paper, one more pole may seem minor. In a finished PCB design, however, the exact pole count often determines whether the layout remains elegant and serviceable or becomes fragmented across several connectors.
Product identity and why it matters
This Weidmüller PCB connector is part of the OMNIMATE Signal family. It uses a 3.50 mm pitch, flange-supported construction, THT/THR solder mounting, a 135° outlet direction, and 3.2 mm tinned solder pins. The black housing follows a common industrial style and supports clear integration into professional electronics assemblies. For engineers searching by exact configuration, the combined identifier Weidmüller 1003730000 SL-SMT 3.50/23/135F 3.2SN BK BX PCB header already reveals the parameters that drive mechanical fit and application suitability.
Technical overview
One of the main strengths of this product is that it delivers a relatively high 23-pole count within the compact 3.50 mm pitch family. That allows dense but still readable interconnection for signal, control, and grouped low-voltage functions. The listed reference values place the connector at IEC 320 V / 15 A and UL 300 V / 10 A, which gives designers a clear starting point for device-level evaluation. As always, final performance depends on the real installation, pole loading, ambient conditions, spacing, and certification path.
The THT/THR mounting style also contributes to its appeal. In applications where connector stability and repeated handling matter, through-hole based solder retention remains a trusted design choice. That can be especially important in automation and equipment electronics where pluggable headers may be connected and disconnected during assembly, testing, or service.
Why 23 poles can be the right answer
A 23-pole connector is not random. It is often the result of a precise circuit grouping need: multiple inputs, outputs, commons, shields, control references, and spare channels brought together in one logical location. When a board needs that count, a correctly sized single connector can be far better than mixing several smaller headers. It improves labeling, streamlines harness planning, and makes the connection scheme easier for technicians to follow.
That is one reason engineers often search exact part formats rather than broad connector families. The difference between 22 poles and 23 poles can decide whether a design remains clean or requires disruptive revision.
Mechanical layout advantages
The 135° outlet supports more controlled cable routing inside the enclosure. This can reduce congestion near nearby components, align wires with a preferred path, and improve overall assembly appearance. The flange element adds another layer of practical value by supporting positioning and helping the connector feel more anchored within the board design.
In systems where multiple boards share a similar connector language, selecting a defined family member like the Weidmüller 1003730000 SL-SMT 3.50/23/135F 3.2SN BK BX PCB header can also support platform consistency. That reduces design friction in future revisions and keeps service documentation more standardized.
Application relevance
This connector is a good match for automation interfaces, industrial communication boards, intelligent building systems, compact controller hardware, machine electronics, and any structured PCB design that benefits from a pluggable 23-pole connection point. The compact pitch keeps the layout efficient, while the pole count allows serious functional density.
Weidmüller 1003730000 For more information about Weidmüller, exploring related OMNIMATE Signal components can help define a consistent connection strategy across an entire product portfolio.
Weidmüller 1003730000 FAQ
What is the connector type of the Weidmüller 1003730000?
It is a male PCB header designed for pluggable board connection. It belongs to the SL-SMT 3.50 product family and uses flange-supported THT/THR mounting.
Why would someone need exactly 23 poles?
Because board connection planning is often driven by exact circuit counts. A 23-pole version can accommodate grouped functions without forcing the use of multiple smaller connectors.
Is the Weidmüller 1003730000 suitable for compact devices?
Yes. Its 3.50 mm pitch makes it a strong choice for compact industrial electronics where board space is valuable but connection density still matters.
Does the 135° outlet change installation behavior?
Absolutely. It changes how the wiring exits the connector and can significantly improve internal cable organization, especially in tight enclosures.
Why is this part often searched with the full code and name?
Because connector selection depends on exact pitch, pole count, mounting style, and orientation. The full product designation helps ensure the right mechanical and electrical fit for the design.