ALQ324 -10A SPST-NO 24VDC Miniature PCB Power Relays

Description

The ALQ324 is a compact, high-performance PCB power relay from Panasonic with a 10A switching capacity and SPST-NO (Single Pole Single Throw – Normally Open) configuration. It operates on 24VDC coil voltage and is designed for reliable switching in compact electronic designs. Ideal for industrial, automotive, and appliance applications.

Technical Information

• Model: ALQ324
• Relay Type: Power Relay
• Coil Voltage: 24V DC
• Contact Form: SPST-NO (1 Form A)
• Contact Rating: 10A at 250V AC / 30V DC
• Contact Material: Silver alloy
• Mounting Type: Through-hole / PCB mount
• Insulation Resistance: 1000 MΩ (minimum)
• Dielectric Strength: 4000Vrms (between coil and contact)
• Operating Time: Approx. 10 ms
• Release Time: Approx. 5 ms
• Ambient Temperature Range: -40°C to +85°C
• Dimensions: Approx. 20.2mm x 10.2mm x 15.8mm

• Contact arrangement: 1 Form A
• Contact shape: Single
• Contact resistance (Initial): 100 mΩ (by voltage drop 6 V DC 1 A)
• Contact material: AgNi type
• Contact rating (resistive load): 5 A 30 V DC, 10 A 125 V AC, 5 A 250 V AC
• switching power (resistive load): 1,250 VA, 150 W
• switching voltage: 250 V AC, 30 V DC
• switching current: 10 A (125 V AC), 5 A (30 V DC)
• switching load (reference value): 100 mA 5 V DC
• Insulation resistance (Initial): 1,000 MΩ (at 500 V DC)
• Dielectric strength (Initial) between open contacts: 1,000 Vrms for 1 min (detection current: 10 mA)
• Dielectric strength (Initial) between contact and coil: 4,000 Vrms for 1 min (detection current: 10 mA)
• Surge withstand voltage (Initial) between contact and coil: 8,000 V

• Operate time (Initial) at 20°C: Max. 20 ms at rated coil voltage (without bounce)
• Release time (Initial) at 20°C: Max. 20 ms at rated coil voltage (without bounce, with diode)

• Shock resistance (Functional): 294 m/s² (half sine shock pulse: 11 ms, detection time: 10 µs)
• Shock resistance (Destructive): 980 m/s² (half sine shock pulse: 6 ms)
• Vibration resistance (Functional): 10 to 55 Hz (at double amplitude of 1.6 mm, detection time: 10 µs)
• Vibration resistance (Destructive): 10 to 55 Hz (at double amplitude of 2 mm)
• Mechanical life: 10×10⁶ operations (switching frequency at 180 times/min)
• Conditions: Ambient temperature -40 to +85°C (or -40 to +60°C at standard packing condition), Humidity 5 to 85% RH (avoid icing and condensation)
• Unit weight: Approx. 7 g

What is a Power Relay?

A power relay is an electrically operated switch used to control high-current loads using a low-power control signal. It provides galvanic isolation between the control and load sides, enabling safer switching in electronic and industrial circuits.

Key Features

• Compact size for dense PCB layouts
• High switching capacity: up to 10A
• SPST-NO contact configuration
• Low power consumption
• High dielectric strength (4000Vrms)
• Wide operating temperature range
• Durable silver alloy contacts for long life
• Meets safety standards for industrial use

Benefits of miniature power relay

The ALQ324 miniature power relay is a reliable and space-saving solution for switching high-current AC or DC loads. Its compact footprint allows integration into smaller PCBs without compromising on performance. With excellent electrical isolation and fast switching time, it helps engineers build efficient, durable circuits across various applications.

Key Benefits:

• High reliability with 10A switching capacity
• Compact and PCB-friendly design
• Long operational life and high contact stability
• Ideal for automation, HVAC, and appliances
• Maintains performance in tough environments

Applications

• Industrial control panels
• Home appliances (AC units, washing machines)
• Automotive electronics
• Power supplies and chargers
• Office automation equipment
• Smart home control units

How to Use (in Para)

Mount the ALQ324 power relay onto your PCB via through-hole soldering. Connect the coil terminals to a 24VDC control signal and the load terminals to your high-power AC or DC circuit. When the coil is energized, the relay closes the contact, allowing current to flow through the load. Ensure the connections follow polarity and current rating requirements for safe use.

Cautions

• Do not exceed rated voltage or current
• Use flyback diode across the coil for inductive load protection
• Ensure proper ventilation to avoid overheating
• Store in a dry, dust-free environment
• Avoid mechanical stress on solder joints during installation

Why You Should Buy

Choose the Panasonic ALQ324 if you need a compact yet powerful relay solution for high-current switching. Its robust performance, long operational life, and industry-grade build quality make it a dependable choice for OEMs and engineers designing smart, efficient systems.

Where and Who Uses It

• Where: Industrial automation, consumer electronics, HVAC units, power management systems
• Who: Electrical engineers, automation designers, OEM manufacturers, system integrators

About the Manufacturer

Panasonic is a world-renowned brand in electronics, recognized for its high-quality components and innovation-driven solutions. Their relays are trusted globally for their durability, precision, and performance, serving applications in industrial, automotive, and consumer electronics sectors.