Description
5V 5-Pin Subminiature Electromagnetic Power Relay
Product Overview
The 5V 5-Pin Electromagnetic Relay is a high-performance electromechanical switching component designed to act as a bridge between low-voltage control circuits and higher-load electrical systems. Operating on a standard 5V DC control signal, this relay is perfectly suited for TTL logic levels commonly found in Arduino, AVR, PIC, and various other microcontroller platforms.
Featuring a 5-pin configuration, the relay provides an SPDT (Single Pole Double Throw) switching arrangement. This allows it to toggle between two distinct circuits—Normally Open (NO) and Normally Closed (NC)—based on the state of the control signal. With its subminiature footprint and robust construction, it is an essential module for automation, home control systems, and DIY electronic projects where secure, isolated switching is required.
Key Features
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Microcontroller-Compatible Trigger: Specifically designed to activate at 5V DC, ensuring seamless integration with standard 5V microcontroller logic outputs and digital signals.
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SPDT Switching Configuration: Features a 5-pin terminal layout that allows for flexible switching logic, supporting both Normally Open (NO) and Normally Closed (NC) connections.
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Compact Subminiature Design: Engineered for high-density PCB layouts, saving valuable board space without sacrificing the current-carrying capability of the relay contacts.
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Complete Circuit Isolation: Effectively isolates the sensitive logic-level control circuitry from the high-voltage or high-current load, protecting your board from back-EMF and electrical surges.
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High-Durability Construction: Utilizes premium-grade internal coil windings and resilient silver-alloy contact points, ensuring long-term operational consistency and reliable performance under standard load cycles.
Technical Specifications
| Parameter | Specification |
| Component Type | Subminiature Electromagnetic Power Relay |
| Control Coil Voltage | 5V DC |
| Pin Count | 5 Pins (Standard Grid) |
| Switching Logic | SPDT (Normally Open / Normally Closed) |
| Mounting Style | PCB Through-Hole |
| Housing Material | High-Impact, Flame-Retardant Thermoplastic |
| Contact Material | High-Conductivity Silver-Alloy |
Applications
The standard-issue switching component for electronics labs, prototyping, and smart home hardware:
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Microcontroller Projects: Ideal for triggering motors, fans, LED arrays, and external actuators using 5V signals from development boards like Arduino.
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Home Automation: Acts as the primary switching element in custom IoT relay modules, smart lighting systems, and security control nodes.
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Electronics Prototyping: A staple component for building modular control systems, automated test benches, and signal-routing circuits.
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Automotive & Hobbyist Repair: Useful for creating custom automotive lighting controls, sensor-triggered alarms, and auxiliary equipment activation circuits.

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