Miniature Slide Switch – 3-Pin SPDT PCB Switch

The SS-12D11 is a miniature SPDT slide switch — a compact 3-pin PCB-mount component designed for applications where board space is limited and reliable circuit selection is required. This miniature slide switch 3 pin provides one common terminal and two selectable output paths, enabling simple ON-ON switching for mode selection, signal routing, and configuration control in portable electronics, audio equipment, and embedded systems.

This 3 pin miniature slide switch features a compact footprint that allows engineers to place the component directly on the PCB without requiring additional mounting hardware or panel cutouts. The through-hole DIP terminals provide strong mechanical retention, making it suitable for applications where the switch will be operated manually and frequently. The SPDT configuration offers circuit flexibility for routing signals or selecting between two operating modes.

Manufactured in an ISO 9001:2015 certified facility, this miniature PCB slide switch is fully compliant with RoHS 3 and REACH regulations. Available in bag or tray packaging, with OEM customization options for volume orders.

Below are the complete specifications for the miniature slide switch 3 pin SS-12D11, covering electrical, mechanical, and environmental ratings.

Specifications should be verified against the latest product drawing and engineering documentation before production release. Electrical performance depends on the complete circuit design, including load type, switching frequency, and environmental conditions.

A 3 pin miniature slide switch with SPDT configuration uses one common terminal and two selectable output paths. Sliding the actuator changes the electrical connection from one throw to the other.

Switch Logic

        ┌── Pin 1 (Throw A)
COM ────┤
        └── Pin 3 (Throw B)

Position 1 (ON-ON): COM connected to Throw A.
Position 2 (ON-ON): COM connected to Throw B.

This miniature SPDT slide switch configuration is straightforward: a sliding actuator moves a contact blade between two fixed positions. This mechanical action changes the circuit path without requiring additional control circuitry. The switch is commonly used for ON-ON applications where two states are sufficient — such as routing a signal to one of two destinations or selecting between two operating modes.

Understanding the terminal configuration of this miniature PCB slide switch is essential for correct PCB layout and circuit design. The three terminals serve specific functions:

• Pin 1 (Throw A): First switched output position
• Pin 2 (COM): Common terminal — the sliding contact always connects to this pin
• Pin 3 (Throw B): Second switched output position

In the first position, the common terminal connects to Throw A. In the second position, the common terminal connects to Throw B. This provides simple ON-ON switching for circuit selection.

The actual terminal assignment should always be verified against the product drawing before PCB layout. Different manufacturers may use different pin arrangements for the same switch type.

The miniature slide switch 3 pin design offers several advantages for PCB designers working on space-constrained electronic devices.

1. Small Footprint

Designed for electronic products where PCB space is limited. The compact size allows engineers to place the switch on dense boards without sacrificing other components.

2. SPDT Functionality

One common terminal can be switched between two selectable outputs, providing circuit selection capability in a minimal package.

3. Simple Manual Operation

Sliding actuator provides clear mechanical position selection with tactile feedback. Users can easily identify the switch state by actuator position.

4. PCB Integration

Designed for direct PCB mounting and soldering through DIP terminals. No additional panel-mount hardware is required.

When selecting a slide switch for your PCB, understanding the differences between miniature and standard sizes is essential.

Choose a miniature slide switch when your PCB design requires a compact switching solution for space-constrained applications. For larger equipment with more board space, standard slide switches may offer additional circuit options.

Selecting the right miniature slide switch for your application requires consideration of several factors.

1. Circuit Configuration

Determine whether your application requires SPST, SPDT, DPST, or DPDT switching. This miniature SPDT slide switch provides one common terminal and two selectable outputs — suitable for ON-ON circuit selection.

2. Number of Positions

This switch provides two positions. If your application requires more than two positions (e.g., ON-OFF-ON), consider a 3-position switch.

3. PCB Mounting Orientation

This switch is designed for PCB mounting with through-hole DIP terminals. For vertical or right-angle mounting, see our vertical slide switch range.

4. Electrical Rating and Mechanical Life

Ensure the switch’s contact rating meets your voltage and current requirements. This miniature PCB slide switch is rated for 0.3A at DC 30V with a 10,000-cycle mechanical life.

Need a different circuit configuration? Explore our complete slide switch product range.

Vistar Electronics supports OEM and ODM requirements for miniature slide switches. For volume projects, the following customization options are available:

• Actuator type and color: Different actuator styles can be specified for user interface requirements.
• Terminal plating: Gold or tin plating options are available for different environmental requirements.
• Packaging: Bag, tray, or tape-and-reel packaging can be specified for different assembly processes.
• Mechanical specifications: Operating force and actuator travel can be adjusted for specific applications.

For projects with specific PCB dimensions or switching requirements, customers can provide the circuit application, required rating, mounting orientation, and estimated annual volume for technical evaluation. Contact our engineering team to discuss your requirements.

What Is a Miniature Slide Switch?

A miniature slide switch is a compact PCB-mounted switching component that uses a sliding actuator to change electrical connections. The SS-12D11 is a 3-pin SPDT version, providing one common terminal and two selectable outputs in a small footprint suitable for space-constrained electronic devices. This miniature slide switch is commonly used for mode selection, signal routing, and configuration control in portable electronics, audio equipment, and embedded systems.

The compact design allows engineers to place the switch directly on the PCB without requiring additional mounting hardware or panel cutouts. Through-hole DIP terminals provide strong mechanical retention, making it suitable for applications where the switch will be operated manually and frequently.

SPDT Circuit Selection — Understanding the Configuration

An SPDT slide switch provides one common terminal and two selectable output paths. This configuration is useful for routing a signal to one of two destinations, selecting between two operating modes, or configuring a circuit for different operation conditions. The switch provides clear position feedback, making it intuitive for user-operated controls.

The miniature SPDT slide switch is one of the most common switching configurations due to its simplicity and versatility. It is suitable for both signal and low-power applications where two-state switching is required.

3-Pin Slide Switch — Terminal Configuration

A 3-pin slide switch uses three terminals: COM (common), Throw A, and Throw B. The sliding actuator connects COM to either Throw A or Throw B, providing ON-ON switching. This configuration is suitable for applications where two states are sufficient — routing a signal to one of two destinations or selecting between two operating modes.

The actual terminal assignment should be verified against the manufacturer’s product drawing for correct PCB layout. Different manufacturers may use different pin arrangements for the same switch type.

Miniature PCB Slide Switch — Applications and Benefits

The miniature PCB slide switch is widely used across multiple industries. Portable electronics use it for handheld products and portable instruments. Audio equipment relies on it for mode selection and signal routing. Test instruments use it for configuration and function selection. Communication equipment uses it for signal path and operating-mode selection. Embedded systems use it for hardware configuration and user-selectable modes. Consumer electronics use it for compact control interfaces.

Benefits of the miniature slide switch include compact footprint, straightforward PCB integration, clear position feedback, reliable mechanical operation, and RoHS compliance.

Why Choose Vistar as Your Miniature Slide Switch Supplier

Vistar Electronics is a trusted manufacturer and supplier of slide switches serving customers in consumer electronics, industrial automation, medical devices, and communication equipment. Our slide switch lineup includes miniature, vertical, horizontal, and right-angle configurations with various circuit options and mounting styles.

With ISO 9001:2015 certification and a commitment to continuous improvement, Vistar is your reliable partner for high-quality switching solutions. For more technical resources, including PCB layout guidelines and switch selection guides, visit our technical blog or contact our engineering support team directly.

Explore our full range of slide switches and related content:

• Slide Switches — Full Product Collection
• Mini Slide Switch Guide
• Slide Switch Guide
• 3 Pin SPDT Slide Switch
• Vertical SPDT Slide Switch