Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX PCB Header
The Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX is a board-mounted male header designed for pluggable PCB connections where compact layout, dependable signal transfer, and practical assembly all matter. In real engineering work, a connector like this is rarely chosen by pitch alone. Designers usually care about how the part sits on the board, how cleanly it aligns with the mating connector, how reliably it behaves in repeated service, and how well it fits into industrial control, interface, and compact electronics applications. That is where this Weidmüller PCB connector stands out.
What the product code tells you
This Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX PCB header belongs to the OMNIMATE Signal connector range. It uses a 3.50 mm pitch and provides 19 poles, making it a practical choice for medium-density signal or low-power control layouts. The 135° outgoing direction supports space-aware cable routing, especially when a straight exit would interfere with nearby components, enclosure walls, or wiring paths. The flange construction also adds mechanical stability and helps with secure positioning in designs that need a more controlled mounting concept.
Core technical characteristics
From a technical standpoint, the part uses a THT/THR solder connection and a 3.2 mm tinned solder pin. That matters because through-hole reflow and through-hole soldered headers are often selected for stronger retention on the PCB, particularly in applications exposed to handling stress, vibration, or repeated plugging cycles. The black insulating body supports a clean, standard industrial appearance, while the connector platform itself is aligned with practical finger-safe usage in the plugged condition.
For electrical performance, this version is associated with IEC ratings up to 320 V and 15 A, while UL values are listed at 300 V and 10 A. In everyday use, engineers still evaluate the full application context, including conductor sizing, creepage and clearance in the end device, temperature rise, and total pole loading. Even so, these values help position the connector clearly within industrial electronics, interface boards, signal distribution points, and compact control hardware.
Why a 19-pole 3.50 mm male header is useful
A 19-pole configuration fills a very practical niche. It gives more flexibility than smaller pole counts without forcing the design into a larger pitch family. That makes the Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX product especially relevant when a PCB must support multiple control lines, I/O signals, monitoring circuits, or grouped field connections in a limited footprint. The 3.50 mm pitch is widely appreciated in compact electronics because it balances density and usability better than extremely tight micro-connector formats in many industrial environments.
The 135° outlet is another detail that becomes more valuable in the actual enclosure than it may appear on paper. Cable management, mechanical spacing, and access for service technicians all improve when the connector orientation matches the equipment architecture. In densely populated control assemblies, that can simplify both layout and maintenance.
Materials, durability, and installation logic
Weidmüller uses an LCP GF insulating material for this family, with UL 94 V-0 flammability performance and a tinned copper-alloy contact system. Those are important details because connector reliability depends not only on current rating, but also on dimensional stability, soldering behavior, and consistent contact performance over time. The part is also specified for repeated plugging cycles, which supports maintainability in devices that may be commissioned, serviced, or upgraded during their lifecycle.
In addition, the THT/THR mounting concept can be especially attractive for designers who want a connector that feels mechanically more secure on the board than a purely surface-mounted alternative. That does not automatically make it the right fit for every design, but it does broaden its relevance in industrial PCB terminal and pluggable connector applications.
Weidmüller 1003690000 Typical application areas
This Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX PCB header is well suited to controller boards, interface modules, compact automation electronics, building control systems, instrumentation units, and communication-related support boards where a stable pluggable connection is needed. It can also be a logical choice for applications where cable preassembly and simplified service exchange are priorities.
Weidmüller 1003690000 For more information about Weidmüller, it is worth reviewing the broader product ecosystem, especially if your design uses several compatible pluggable PCB connector families across one platform.
Weidmüller 1003690000 FAQ
What type of connector is the Weidmüller 1003690000?
It is a male PCB header designed for pluggable board connection systems. More specifically, it is a Weidmüller SL-SMT 3.50/19/135F 3.2SN BK BX connector with flange mounting characteristics and a through-hole style solder interface.
How many poles does this version have?
This specific code has 19 poles. That pole count makes it useful for grouped signal paths, multi-line control wiring, or compact interface designs where a larger terminal arrangement is needed without moving to a bigger connector pitch.
Why does the 135° outlet matter?
The 135° orientation helps with cable direction and space planning inside equipment. In many layouts, it can improve routing clearance, reduce wire bending stress, and support a cleaner internal arrangement than a straight-exit connector.
Is this connector intended for high-power use?
It is better understood as a compact industrial PCB connector for signal and moderate power/control duties within its stated ratings. Application suitability should always be checked against the full device design, thermal conditions, and applicable standards.
What makes this Weidmüller 1003690000 SL-SMT 3.50/19/135F 3.2SN BK BX PCB header attractive for industrial electronics?
Its combination of compact 3.50 mm pitch, 19-pole density, THT/THR mounting, flange-supported structure, and established industrial connector design makes it attractive for engineers seeking reliable pluggable PCB connectivity with practical serviceability.