PJ320D 3.5MM Stereo Headphone Female Audio Jack SMD Connector

Description

PJ320D 3.5MM Stereo Headphone Female Audio Jack SMD Connector

Here are the detailed specifications for the PJ320D 3.5mm Stereo Headphone Female Audio Jack (SMD connector):

PJ320D 3.5mm Audio Jack – Key Specifications

Type: Stereo headphone/microphone combo jack (4-pole/3-conductor)
Mounting: Surface Mount (SMD)
Configuration: Normally closed switches (detection pins)

1. Electrical Characteristics

• Rated Current: 500mA (max per contact)

• Contact Resistance: <30mΩ

• Insulation Resistance: >100MΩ (500VDC)

• Dielectric Strength: 500V AC (1 minute)

• Operating Voltage: 50V AC/DC (max)

2. Mechanical Specifications

• Jack Type: 3.5mm (1/8″) 4-pole stereo

• Mounting Style: Surface Mount (SMD)

• Pins: 6 contacts total

• Insertion Life: 10,000 cycles (min)

• Insertion Force: ≤20N

• Withdrawal Force: ≤10N

3. Physical Dimensions

• Overall Size: ~12mm × 8mm × 6mm (L×W×H)

• PCB Footprint: ~9mm × 6mm

• Panel Cutout: 5mm × 5mm (square)

• Weight: ~1.2g

4. Audio Specifications

• Channels: Stereo (L+R) + Mono microphone

• Contact Layout: TRRS (Tip-Ring-Ring-Sleeve)

• Standard Wiring:

  • Tip: Left audio

  • Ring 1: Right audio

  • Ring 2: Ground (or MIC in some standards)

  • Sleeve: Microphone (or GND in some standards)

5. Materials & Finishing

• Contacts: Phosphor bronze with gold plating

• Insulator: PBT (heat-resistant plastic)

• Shell: Nickel-plated brass

• Operating Temperature: -25°C to +70°C

6. Applications

• Smartphones and tablets

• Bluetooth headphones

• Portable audio devices

• IoT audio interfaces

PCB Layout Recommendations

1. Solder Pads:

   • Use 0.8mm × 1.5mm rectangular pads

   • 2× mounting tabs for mechanical stability

2. Keep-out Area:

   • 2mm clearance around jack for plug insertion

3. Ground Plane:

   • Connect shell to PCB ground for shielding