HF33F-Z3 12V 5A SPDT Relay PCB Mount 5-Pin

HF33F-Z3 12V 5A SPDT Relay is a compact, PCB-mountable single-pole double-throw (SPDT) relay designed for general-purpose switching in low-voltage DC applications. It offers reliable performance in automation, home appliances, and microcontroller-based switching systems. With a 12V coil and 5A switching capacity, this 5-pin relay is ideal for moderate load control with minimal board space usage.

Key Features:

• SPDT (Single Pole Double Throw) configuration for flexible switching options
• 12V DC coil voltage for microcontroller compatibility
• Rated to switch up to 5A @ 250VAC or 30VDC
• Low-profile, compact 5-pin PCB mountable design
• Fast switching time and long electrical life

Technical Specifications:

• Model: HF33F-Z3
• Coil Voltage: 12V DC
• Coil Resistance: Approx. 320Ω
• Contact Type: SPDT (Form C)
• Contact Rating: 5A @ 250VAC / 5A @ 30VDC
• Contact Resistance: ≤100mΩ
• Insulation Resistance: ≥100MΩ at 500VDC
• Dielectric Strength: 1000VAC between coil and contacts

Mechanical Specifications:

• Contact Material: Ag alloy
• Operation Time: ≤10ms
• Release Time: ≤5ms
• Electrical Life: ≥100,000 operations
• Mechanical Life: ≥10,000,000 operations

Dimensions:

• Length: 19.0mm
• Width: 15.5mm
• Height: 15.3mm
• Pin Pitch: Standard 5-pin PCB layout

Mounting Options:

• Direct PCB through-hole soldering
• Horizontal placement with compatible footprint
• Can be socketed using 5-pin relay bases (optional)

Schematic Diagram, Connection, Wiring and Pinout:

• Pin 1: Coil –
• Pin 2: Coil +
• Pin 3: Common (COM)
• Pin 4: Normally Closed (NC)
• Pin 5: Normally Open (NO)
• Wiring: Connect control voltage to coil pins; load between COM and NO/NC depending on desired default state

Datasheet/User Manual:

• HF33F-Z3 Series Relay Datasheet (PDF)

Applications:

• Microcontroller-based switching circuits (Arduino, ESP32, STM32, etc.)
• Home automation and appliance control
• Low-voltage lighting and fan control
• Security systems and alarms
• Relay driver modules and development boards

Equivalent:

• Songle SRD-12VDC-SL-C
• Omron G5LE-1-DC12
• JQC-3FF-S-Z 12V

Package Includes:

• 1 x HF33F-Z3 12V 5A SPDT Relay