5 Pin 2.5mm Headphone Jack for Right-Angle PCB Mounting

The PJ-204B is a 5 pin headphone jack — a 2.5mm audio connector with a right-angle DIP through-hole design and a transparent cover for visual inspection. This 5 pin 2.5mm headphone jack is suitable for PCB applications where additional switching contacts are required beyond the standard 3-pin audio connection. The transparent cover allows engineers and assembly technicians to verify proper insertion and contact alignment without disassembly.

This 2.5mm audio jack connector features a right-angle orientation that positions the connector parallel to the PCB surface, enabling edge-mount installation that saves vertical space in slim device designs. The DIP through-hole mounting provides strong mechanical retention — particularly important for audio jacks that experience repeated plug insertion and removal. The 5-pin configuration offers additional switching flexibility compared to standard 3-pin versions.

Manufactured in an ISO 9001:2015 certified facility, this right angle headphone jack 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 2.5mm audio jack connector PJ-204B, 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 audio signal path, load type, and switching conditions.

A right angle headphone jack with 5 pins provides more circuit flexibility than a standard 3-pin audio jack. The five terminals typically include:

• Tip connection: Left channel audio
• Ring connection: Right channel audio (for stereo) or mic
• Sleeve connection: Ground
• Additional switch contacts: Detection or switching functions

The 5-pin DIP headphone jack configuration allows engineers to implement detection circuits that sense when a plug is inserted, enabling features such as automatic audio routing or device wake functions. The switching contacts can also be used to bypass internal speakers or activate auxiliary circuits when headphones are connected.

The actual terminal assignment should always be verified against the manufacturer’s product drawing before PCB layout. Different 5-pin audio jacks may use different pin arrangements depending on the internal switch structure and contact configuration.

A right angle headphone jack positions the connector parallel to the PCB surface, enabling edge-mount installation that saves vertical space and simplifies enclosure design. This 5 pin 2.5mm headphone jack is particularly useful in slim devices where vertical clearance is limited — such as portable electronics, compact audio equipment, and embedded systems.

The right-angle orientation offers several advantages over vertical mounting:

• Saves vertical space: The low-profile design allows for thinner product enclosures.
• PCB edge mounting: The connector can be placed at the board edge with the port aligned to the side panel.
• Horizontal cable routing: Cables exit parallel to the board, simplifying internal cable management.
• Improved accessibility: Side-entry ports are often more accessible in compact devices.

When designing with a right angle headphone jack, engineers should consider the mechanical clearance required for plug insertion and cable routing. Allow adequate space beyond the board edge for the connector body and mating plug.

A DIP headphone jack uses through-hole pins that pass through the PCB and are soldered on the opposite side. This 5 pin 2.5mm headphone jack provides several advantages for PCB integration:

• Strong mechanical retention: Through-hole pins provide superior pull-out resistance compared to SMT alternatives — critical for audio jacks that experience repeated plug insertion and removal.
• Easy manual assembly: DIP components are straightforward to solder by hand, making them suitable for prototyping and low-volume production.
• Rework convenience: Through-hole components are easier to remove and replace than SMT components.
• Proven reliability: Through-hole solder joints have a long track record of reliability in industrial and consumer applications.

This DIP headphone jack is compatible with wave soldering and selective soldering processes, as well as manual hand soldering for prototyping and small-batch production. The 5-pin configuration provides additional switching contacts while maintaining the mechanical advantages of through-hole mounting.

When selecting an audio jack for your PCB, understanding the differences between 3-pin and 5-pin configurations is essential.

A 3-pin audio jack is generally sufficient for a basic stereo connection, providing Tip (left), Ring (right), and Sleeve (ground). A 5 pin headphone jack provides additional contacts that can be used for detection circuits, automatic audio routing, or device wake functions — particularly useful in portable devices where headphone insertion triggers system events.

Vistar offers both DIP and SMT 2.5mm audio jacks. The table below compares the key differences to help you choose the right mounting option for your application.

The PJ-204B is a DIP headphone jack. Choose this for applications requiring maximum mechanical strength, easy prototyping, or where rework may be needed. For high-volume automated assembly, consider our SMD 2.5mm audio jack options.

What Is a 5 Pin 2.5mm Headphone Jack?

A 5 pin 2.5mm headphone jack is a compact audio connector designed for PCB integration in electronic devices. The PJ-204B features a right-angle DIP through-hole design, a transparent cover for visual inspection, and five terminals — providing both audio connectivity and additional switching contacts for detection or routing functions. This makes it suitable for applications where headphone insertion needs to trigger system events, such as automatic audio routing or device wake functions.

The 2.5mm form factor is smaller than the more common 3.5mm jack, making it suitable for compact electronic devices where board space is limited. The right-angle orientation positions the connector parallel to the PCB surface, enabling edge-mount installation that saves vertical space in slim device designs.

5 Pin Headphone Jack — Circuit Flexibility

A 5 pin headphone jack provides more circuit flexibility than a standard 3-pin audio jack. The five terminals typically include Tip (left channel), Ring (right channel), Sleeve (ground), and two additional switching contacts. These extra contacts can be used for detection circuits that sense when a plug is inserted, enabling features such as automatic audio routing or device wake functions.

The switching contacts can also be used to bypass internal speakers or activate auxiliary circuits when headphones are connected. This makes the 5-pin configuration particularly useful in portable devices, communication equipment, and embedded systems where audio routing needs to be automated.

2.5mm Audio Jack Connector — Small Form Factor Benefits

The 2.5mm audio jack connector is smaller than the more common 3.5mm version, offering several advantages for compact electronic designs. The reduced diameter allows for smaller PCB footprints and more compact device enclosures. This makes it particularly suitable for portable devices, handheld instruments, and space-constrained applications where every millimeter matters.

Despite its smaller size, the 2.5mm jack maintains the same basic electrical characteristics as larger audio jacks, making it a drop-in replacement for applications where board space is limited. The PJ-204B’s right-angle DIP design provides the mechanical robustness needed for repeated plug insertion and removal.

Right Angle Headphone Jack — PCB Edge Mounting

A right angle headphone jack positions the connector parallel to the PCB surface, enabling edge-mount installation that saves vertical space and simplifies enclosure design. This orientation is particularly useful in slim devices where vertical clearance is limited — such as portable electronics, compact audio equipment, and embedded systems.

The right-angle orientation allows the connector to be placed at the PCB edge with the port opening aligned to the side panel. This simplifies industrial design and improves cable management by allowing the cable to enter from the side rather than the top of the device.

DIP Headphone Jack — Through-Hole Advantages

A DIP headphone jack uses through-hole pins that pass through the PCB and are soldered on the opposite side. This provides superior mechanical retention compared to SMT alternatives — critical for audio jacks that experience repeated plug insertion and removal. Through-hole mounting also makes the connector easier to inspect and solder manually, making it suitable for prototyping, low-volume production, and applications where rework may be needed.

The PJ-204B’s DIP design is compatible with wave soldering and selective soldering processes, as well as manual hand soldering. The 5-pin configuration provides additional switching contacts while maintaining the mechanical advantages of through-hole mounting.

Applications Across Industries

This 5 pin 2.5mm headphone jack is widely used across multiple industries. Portable audio devices use it for headphone output with detection. Consumer electronics use it for tablets, handheld devices, and portable instruments. Industrial equipment uses it for test instruments and measurement devices. Communication devices use it for two-way radios and headsets. Embedded systems use it for single-board computers and audio applications. Gaming and multimedia devices use it for controllers and entertainment systems.

Why Choose Vistar as Your Audio Jack Connector Supplier

Vistar Electronics is a trusted manufacturer and supplier of audio jack connectors serving customers in consumer electronics, industrial automation, and communication equipment. Our audio jack lineup includes 2.5mm and 3.5mm configurations with 3-pin, 4-pin, and 5-pin options, in both DIP and SMT mounting styles.

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

Explore our full range of audio jack connectors and related content:

• Audio Connectors — Full Product Collection
• 5 Pin 2.5mm Headphone Jack — PJ-204B
• 2.5mm Phone Jack SMD 4-Pin
• 3 Pin 2.5mm Audio Jack