Weidmüller 1003440000 S2L-SMT 3.50/30/90GH 1.5SN BK RL PCB Male Header Guide
The Weidmüller 1003440000 S2L-SMT 3.50/30/90GH 1.5SN BK RL PCB male header is a specialised board connection component designed for engineers who need a compact, structured, and dependable interface on electronic assemblies. As a Weidmüller 1003440000 PCB plug-in connector male header, it combines a 3.50 mm pitch, a 30-pole layout, a 90-degree orientation, and a THT/THR solder connection concept. That specification immediately makes it relevant for control boards, interface modules, signal distribution boards, and industrial electronics where connection density matters just as much as routing discipline.
What the product type tells you
Looking closely at the naming helps clarify the design intent. The Weidmüller S2L-SMT 3.50/30/90GH 1.5SN BK RL male header uses a 3.50 mm pitch, which is a popular dimension for compact pluggable PCB connectors in industrial and building automation electronics. The 30-pole configuration supports multiple signal paths in one organised interface, reducing the need for scattered individual connection points across the board.
The 90-degree format is especially useful where the connector needs to redirect cable or mating plug orientation along the board plane rather than straight upward. In practical layouts, this can improve enclosure fit, preserve height clearance, and make service access more predictable. Because this version is described as a closed-side male header, it also contributes to more controlled positioning in mating applications.
Key technical characteristics
This Weidmüller 1003440000 S2L-SMT 3.50/30/90GH 1.5SN BK RL connector is defined as a PCB plug-in connector with THT/THR solder connection, 30 poles, 3.50 mm pitch, 90° orientation, and a 1.5 mm solder pin length. The contact surface is tinned, the housing colour is black, and the packaging format is tape. From an electrical rating perspective, the official product data lists IEC 160 V / 10 A and UL 150 V / 10 A. That profile positions it well for structured low-voltage board interconnection tasks where a stable and clearly defined mating interface is required.
For layout planning, the 30-pole count is one of the most important distinctions of this part. A connector with that many positions can simplify multi-channel signal architecture, especially in controller boards, I/O modules, and communication subassemblies. Instead of using multiple smaller connectors and increasing assembly complexity, designers can keep the connection strategy centralised.
Why engineers choose this connector style
In many electronics projects, connector choice is not simply about matching a voltage and current figure. Mechanical behaviour during soldering, board real estate usage, mating access, and long-term maintenance all matter. The Weidmüller 1003440000 S2L-SMT 3.50/30/90GH 1.5SN BK RL product type is useful when a design requires many poles in a compact and ordered arrangement without forcing a vertical connector profile.
The THT/THR concept is also meaningful in real production settings. It helps combine mechanical stability with board-level reliability, which is valuable where connectors may be exposed to vibration, thermal cycling, or repeated service operations. For engineers working on industrial control electronics, that balance is often more important than headline numbers alone.
Typical application context
This connector can be relevant in PLC-related electronics, signal interface cards, compact industrial controllers, building automation boards, and instrumentation electronics. The 3.50 mm pitch supports compact integration, while the 30-position layout is especially useful where multiple low-voltage signals or structured terminal groupings must be maintained on one board edge.
Weidmüller 1003440000 For more information about Weidmüller, it is worth reviewing related board connectivity families as well, especially when a project requires matching plug and header combinations across several pole counts.
Weidmüller 1003440000 FAQ
What kind of connector is Weidmüller 1003440000?
It is a PCB plug-in connector male header with closed sides, designed for THT/THR soldering. It belongs to a compact 3.50 mm pitch product family and is intended for organised board-to-plug connectivity.
How many poles does the Weidmüller 1003440000 S2L-SMT 3.50/30/90GH 1.5SN BK RL have?
This version has 30 poles. That makes it suitable for applications where a large number of signals or connections need to be grouped into a single connector interface.
Why does the 90-degree orientation matter?
A 90-degree header changes how the mating side sits relative to the PCB. It can help manage enclosure height, guide cable direction more efficiently, and improve service accessibility in compact assemblies.
What does the 1.5SN designation indicate?
In the product description, it refers to the solder pin length of 1.5 mm. That detail is relevant for PCB thickness, soldering process compatibility, and overall mechanical fit during assembly.
Is this connector suitable for industrial electronics?
Yes, it is clearly aligned with industrial-style PCB interconnection. Its organised multi-pole format, robust soldering concept, and established board connector architecture make it suitable for many industrial electronics and control applications.
What should engineers verify before final selection?
They should confirm mating compatibility, creepage and clearance requirements in the end application, PCB footprint alignment, assembly process suitability, and enclosure constraints. Connector selection is always strongest when electrical and mechanical criteria are reviewed together.