5V 10A 5-Pin PCB Mount T-73 Relay (Industrial-Grade Miniature Sugar Cube Relay)
Introduce robust, reliable automated switching into your electronics layouts with the industrial-grade 5V 10A 5-Pin PCB Mount T-73 Relay. Universally recognized for its compact "sugar cube" form factor, this high-performance electromagnetic switch allows low-voltage microcontrollers to safely isolate and control high-current AC and DC mains circuits without risk of electrical feedback.
Prototyping automated switching networks often exposes delicate control logic to high-voltage spikes. Operating on a standard 5V DC logic coil input, this relay bridges the gap between digital processing components and heavy loads. It features highly durable Single-Pole Double-Throw switching contacts rated to handle currents up to 10 Amps smoothly. It serves as the definitive choice for custom automated control panels, smart home automation modules, DIY appliance triggers, and multi-channel industrial relay boards.
Key Features
Heavy-Duty 10A Switching Contacts: Engineered with premium, high-conductivity internal alloy contacts capable of handling continuous continuous loads up to 10 Amps at standard grid voltages.
Low-Power 5V DC Energizing Coil: Highly optimized internal electromagnetic coil operates smoothly on a standard 5V logic rail, drawing minimal current directly from driver transistors or logic gates.
Versatile SPDT Contact Configuration: Features a Single-Pole Double-Throw contact arrangement offering both Normally Open and Normally Closed connection choices for absolute application flexibility.
Rugged T-73 Sealed Plastic Casing: Encased in a heavy-duty, flame-retardant miniature housing that safeguards internal contacts against workshop dust, humidity, and atmospheric oxidation.
Standardized 5-Pin Through-Hole Pitch: Precision-aligned pin array maps perfectly onto prototyping breadboards, prototyping grid modules, and standard custom printed circuit board tracks.
Instant Mechanical Response Execution: Designed with a fast-acting internal armature mechanism that delivers clean, crisp switching transitions with zero logic lagging.
Technical Specifications
Feature | Specification |
Relay Package Style | Subminiature T-73 Sugar Cube Configuration |
Nominal Coil Energizing Voltage | 5V DC |
Maximum Contact Current Rating | 10 Amps continuous tracking threshold |
AC Switching Threshold Capacity | Up to 250V AC (Standard grid application limits) |
DC Switching Threshold Capacity | Up to 30V DC (Industrial control rail limits) |
Contact Loop Alignment Array | SPDT (1 Form C Setup Configuration) |
Total Conductor Interface Pins | 5-Pin Grid Layout |
Terminal Matrix & Pinout Configuration
The 5-pin terminal array is logically distributed across the base plate to maintain separation between your control logic and active switching rails:
Coil Pins (2 Terminals): Connected directly to the internal electromagnet. Apply a clean 5V DC potential across these points via a switching transistor or driver chip to activate the relay mechanism.
COM (Common Terminal): The primary input feed pin that dynamically routes current to either output path depending on the activation state of the coil.
NO (Normally Open Terminal): Stays completely disconnected from the COM line while the relay coil is powered down. Closes immediately when the 5V logic signal energizes the coil mechanism.
NC (Normally Closed Terminal): Remains firmly connected to the COM track by default while the relay is idle. Breaks contact instantly the moment the coil receives power.
Common Applications
Smart Home Appliance Switching: Integrate directly into custom automated smart plugs, light switches, wireless fan nodes, and domestic water pump triggers.
Industrial Control System Arrays: Form the baseline active core for multi-channel relay modules (such as 1-channel, 2-channel, and 4-channel platforms) to toggle factory automation blocks.
Microcontroller Logic Isolation Blocks: Act as a reliable safety firewall between low-voltage development boards (Arduino, ESP32, STM32) and heavy electrical loads.
Automotive Accessory Routing: Control auxiliary car electronics, cooling fans, warning indicator lights, and custom sound horns securely.
🛠️ Pro-Engineering Circuit Design Tip: Because an electromagnetic relay coil drops its magnetic field rapidly when turned off, it creates a brief, high-voltage reverse current spike (inductive kickback) that can destroy driving transistors. To shield your control logic from damage, always solder a general-purpose protection diode (like a 1N4007) directly across the two coil pins in a reverse-biased alignment. This paths the feedback spike harmlessly away from your microcontroller inputs.
Package Includes:
1 x 5V 10A 5-Pin PCB Mount T-73 Relay