3.5×4.3mm Detector Switch — 4 Pin SMT PCB Detection Switch for Compact Electronics
3.5×4.3mm Detector Switch — Product Overview
The DS-006 is a 3.5×4.3mm detector switch designed for PCB-based position and presence detection in space-constrained electronic devices. The compact 3.5×4.3mm footprint allows engineers to integrate reliable detection functionality into high-density PCB layouts without sacrificing board space, making it particularly suitable for portable devices, consumer electronics, and other space-limited applications.
As a 4 pin SMT detector switch, the DS-006 uses surface-mount termination for automated assembly and stable PCB retention. Detector switches are typically actuated by mechanical components such as lids, doors, trays, or moving parts. When the component moves into position, it contacts the switch’s actuator, triggering the switch to change state. This state change is then read by the device’s controller, enabling the device to respond appropriately.
The DS-006 is rated at 50mA / 12V DC with a travel of 1.29±0.10mm and an operating force of 35gf. The 50,000-cycle mechanical life provides a defined durability benchmark for products where the detection switch is actuated frequently during normal use. The SMT configuration supports automated pick-and-place and reflow soldering processes, making it suitable for high-volume production.
4 Pin SMT Detector Switch — Full Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Part Number | DS-006 | Standard catalog item |
| Product Type | SMT Detector Switch | 4-pin surface mount |
| Body Size | 3.5 × 4.3 mm | Compact footprint |
| Terminal Count | 4 Pins | Surface-mount termination |
| Mounting Type | SMT / SMD | Reflow compatible |
| Rated Current | 50mA | — |
| Rated Voltage | 12V DC | — |
| Travel | 1.29 ± 0.10 mm | Operating stroke |
| Operating Force | 35gf | Actuation force |
| Mechanical Life | 50,000 cycles | Durability |
| Packaging | Tape & Reel | SMT assembly ready |
| Compliance | RoHS, REACH | Global export ready |
Why Engineers Choose the 3.5×4.3mm SMD Detector Switch for Compact PCB Detection
Compact 3.5×4.3mm Footprint — Space-Saving PCB Integration
The small 3.5×4.3mm package allows engineers to add position-sensing functionality into high-density PCB layouts without consuming excessive board area. This is particularly important for portable devices and compact consumer electronics where every millimeter counts.
4-Pin SMT Configuration — Stable PCB Retention
The four-terminal SMT configuration provides stable PCB retention and reliable electrical contact for position and mechanism detection applications. The surface-mount design supports automated pick-and-place assembly and reflow soldering for high-volume production.
Reliable Mechanical Detection — Lid, Tray, Cover & Insertion Sensing
The DS-006 can detect the position or movement of covers, trays, doors, modules, and other mechanical components. When the actuator is pressed or released, the internal contact changes state, sending a signal to the controller for position or status monitoring.
50,000-Cycle Operating Life — Defined Durability Benchmark
Rated for 50,000 mechanical cycles, the DS-006 provides a defined durability benchmark for products where the detection switch is actuated frequently during normal use. This makes it suitable for applications such as tray detection in printers or lid detection in laptops.
1.29mm Travel with 35gf Operating Force
The 1.29±0.10mm travel and 35gf operating force provide a precise actuation threshold. The light operating force is suitable for applications where the actuating mechanism (such as a plastic tab or door) applies limited pressure.
RoHS & REACH Compliant — Globally Export Ready
Lead-free construction meets global environmental standards for unrestricted export to regulated markets. The DS-006 is suitable for consumer electronics, industrial automation, and portable device applications.
The DS-006 3.5×4.3mm detector switch is designed for SMT PCB assembly and is available with RoHS compliance for applications where material restrictions are required.
For more information about EU substance restrictions, see the EU RoHS Directive.
Where to Use the PCB Detector Switch — Applications for Consumer, Office & Industrial Equipment
3.5×4.3mm Detector Switch DS-006 — Frequently Asked Questions
What is a 3.5×4.3mm detector switch?
A 3.5×4.3mm detector switch is a compact surface-mount component used for position and presence detection in electronic devices. The DS-006 is a 4-pin SMT version with a 50mA / 12V DC rating, 1.29mm travel, 35gf operating force, and 50,000-cycle life. It is commonly used for lid detection, tray sensing, and cover position monitoring in compact equipment.
What is the difference between a 3.5×4.3mm detector switch and a micro switch?
A detector switch like the DS-006 is designed for automated position sensing with a short stroke (1.29mm) and light operating force (35gf). It is actuated by mechanical components such as lids, trays, or covers. A micro switch is typically larger, has a longer stroke, and is designed for human actuation or higher-force mechanical detection. Detector switches are ideal for space-constrained applications where a micro switch would be too tall. For a detailed comparison, see Vistar’s Detector Switch vs Micro Switch guide.
What are the electrical ratings of the DS-006?
The DS-006 is rated at 50mA at 12V DC. It is suitable for low-current signal and control circuits. The 50,000-cycle mechanical life provides a defined durability benchmark for typical user-operated detection applications.
Is the DS-006 suitable for automated SMT assembly?
Yes. The DS-006 is designed for SMT assembly and is supplied in tape & reel packaging for high-volume pick-and-place machines. The surface-mount configuration supports standard reflow soldering processes.
How do I select the right operating force for a detector switch?
The operating force should match the mechanical actuator that will press the switch. For battery door detection in handheld devices, 130–160 gf is often a good range — light enough for a plastic tab to actuate reliably, heavy enough to ignore casual bumps. The DS-006 has a 35gf operating force, which is suitable for very light actuation mechanisms. For more guidance, see Vistar’s Detector Switch Selection Guide.
What is the MOQ and can I get a free sample?
Standard MOQ is 1,000 pieces with a 2–4 week production lead time. Free samples are available for qualified engineering and product development projects. Contact sales@vistarelectronics.com with your company details, project application, and part number (DS-006).
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