Relays
A relay is an electrically operated switch that allows a low power circuit to control a high power circuit. It consists of a coil, which is activated by an electric current, and a set of contacts that open or close when the coil is activated. Relays have a wide range of use cases, including controlling the flow of electricity in a circuit, protecting electrical components from damage, and amplifying signals. They are commonly used in automotive systems, HVAC systems, and control panels. Flux.ai has the world's largest community-driven public library of relays, with footprints, symbols, datasheets, and simulation models. This library is a valuable resource for engineers and designers looking for reliable and accurate information on relays.
TQ2SA-L2-3V-Z
Flat, 5 mm 2 Form C, 2 A, relays Telecom Relay DPDT (2 Form C) Surface Mount The TQ2SA-L2-3V-Z is a compact surface-mount DPDT (2 Form C) telecom/signal relay from Panasonic Industry designed for low-power switching applications. It features a dual-coil latching mechanism, allowing the relay to maintain its state without continuous coil power, making it suitable for battery-powered and energy-efficient systems. This relay is commonly used in telecommunications equipment, industrial controls, measurement devices, and embedded electronic systems. Key Features DPDT (2 Form C) contact configuration 3V DC dual-coil latching relay Low power consumption: approximately 140 mW Compact SMD package: only 5.6 mm height Surface-mount gull-wing terminals Sealed construction for automatic washing compatibility High switching capability: up to 2 A Wide switching voltage range: up to 125 VAC / 220 VDC Fast operate/release time: approx. 4 ms High dielectric strength and surge resistance Wide operating temperature: −40°C to +85°C Gold-clad AgNi contacts for reliable low-level signal switching Tape-and-reel packaging (“Z” suffix) for automated assembly #CommonPartsLibrary #relay
3 Uses0 StarsMMBT2222ALT3G
Bipolar (BJT) Transistor NPN 40V 600 mA 300MHz 300 mW Surface Mount SOT-23-3 (TO-236) The MMBT2222ALT3G is a NPN general-purpose bipolar junction transistor (BJT) manufactured by onsemi, designed in a SOT-23 surface-mount package. It is the SMD version of the well-known 2N2222A transistor family, used for switching and signal amplification in compact electronic circuits. It is widely used in industrial, automotive (AEC-Q101 qualified variants), and general embedded systems due to its reliability, small size, and good electrical performance. Key Features NPN General-Purpose Transistor Suitable for switching and low-power amplification Collector-Emitter Voltage (Vceo) Up to 40 V Collector Current Up to 600 mA Power Dissipation Around 225–300 mW (depending on package conditions) High Frequency Performance Transition frequency up to ~300 MHz DC Current Gain (hFE) Typically ~100 at moderate currents Low Saturation Voltage Efficient switching performance for digital circuits SOT-23 Surface-Mount Package Compact footprint for modern PCB designs Wide Temperature Range Typically -55°C to +150°C RoHS / Lead-Free Compliant Environmentally compliant manufacturing Typical Applications LED switching circuits Relay driver stages MCU signal interfacing (Arduino, ESP32, etc.) Small motor drivers General signal amplification Automotive and industrial control circuits Important Note MMBT2222ALT3G = SMD version (SOT-23) Equivalent to 2N2222A (TO-92 through-hole version) in function, but not in physical package. 2N2222A SOT-23 #commonpartslibrary #transistor #bjt
529 Uses0 StarsHF49FD/005-1H11TF
Hongfa Europe GMBH PCB Mount Power Relay, 5V dc Coil, 5A Switching Current, SPS The HF49FD/005-1H11TF is part of the Hongfa HF49FD series, which consists of compact, high-sensitivity power relays. It operates using a 5 V DC coil and provides electrical isolation between the control circuit and the load, allowing low-power signals (e.g., from a microcontroller) to switch higher voltages or currents. Key Characteristics Type: Electromagnetic relay (non-latching) Contact Configuration: SPST-NO (1 Form A, normally open) Coil Voltage: 5 V DC Switching Current: up to 5 A Switching Voltage: 250 VAC 30 VDC Mounting Type: Through-hole / PCB mount Size: ~20 × 5 × 12.5 mm (slim design) Coil Power Consumption: ~120 mW (low power) Dielectric Strength: up to 3 kV isolation Functional Overview Uses a coil + mechanical contacts: When 5 V is applied → coil energizes → contacts close When removed → contacts open Provides electrical isolation between: control side (low voltage) load side (higher voltage/current) #Relay
36 Uses0 StarsG3VM-61VY3(TR05)
Solid State Photo-Coupled Relay (Photorelay) SPST-NO (1 Form A) 4-SOP (0.179", 4.55mm) The G3VM-61VY3(TR05) is a single-pole, single-throw normally open (SPST-NO) solid-state relay that uses an LED input and MOSFET output to switch AC or DC loads without mechanical contacts. It provides fast, silent, and highly reliable switching in a very small surface-mount package. Key Characteristics Relay Type: Solid State Relay (Photorelay) Contact Form: SPST-NO (1 Form A) Output Type: MOSFET Load Voltage: Up to 60 V AC/DC Load Current: Up to 700 mA On-Resistance: ~2 Ω max Input Control: LED-driven (low current DC input) Isolation Voltage: ~3.75 kV (input to output) Package: SOP-4 surface-mount (compact form factor) Packaging Option: TR = Tape & Reel for automated assembly How It Works The input LED is energized with a small DC current. It activates an internal photo-coupler. This drives a pair of MOSFETs, turning the load ON or OFF. No mechanical movement → no arcing or contact wear. Key Advantages Silent operation (no clicking sound) Very long life (no mechanical parts) Fast switching speed Compact size for dense PCB layouts Low leakage and stable performance Typical Applications Semiconductor test equipment Industrial control systems Battery-powered devices Data acquisition systems Communication and measurement circuits General-purpose signal switching #CommonPartsLibrary #Relay #SSR #G3VM
186 Uses0 StarsG6K-2P-Y-DC5
Telecom Relay DPDT (2 Form C) Through Hole The G6K-2P-Y DC5 is a compact, ultra-miniature signal relay designed for high-density PCB mounting applications. Manufactured by Omron, this relay features a DPDT (2 Form C) contact configuration and operates with a 5 VDC coil. It is optimized for switching low-level signals and is commonly used in telecommunications, test and measurement equipment, and consumer electronics where space-saving and high reliability are critical. Key Features Ultra-miniature, low-profile design for high-density mounting DPDT (2 Form C) contact configuration High sensitivity coil (low power consumption) Gold-clad contacts for low-level signal switching High reliability and long mechanical life Fully sealed construction (flux protection) Suitable for surface-mount and through-hole variants (depending on suffix) Electrical Characteristics Coil Specifications Rated Coil Voltage: 5 VDC Coil Resistance: ~125 Ω Coil Current: ~40 mA Power Consumption: ~200 mW Must Operate Voltage: ≤ 75% of rated voltage Must Release Voltage: ≥ 10% of rated voltage Contact Specifications Contact Configuration: DPDT (2 Form C) Contact Material: Gold-clad silver alloy Contact Rating: 1 A at 30 VDC 0.5 A at 125 VAC Maximum Switching Voltage: 125 VAC / 60 VDC Maximum Switching Current: 1 A Maximum Switching Power: 30 W (DC) 62.5 VA (AC) Timing Characteristics Operate Time: ≤ 3 ms Release Time: ≤ 3 ms Insulation Characteristics Insulation Resistance: ≥ 1,000 MΩ (at 500 VDC) Dielectric Strength: Between Coil and Contacts: 1,000 VAC (1 min) Between Open Contacts: 500 VAC (1 min) Mechanical Characteristics Mounting Type: Through-hole (Y variant, PCB terminal) Weight: ~1 g Enclosure: Sealed (flux-resistant) Environmental Specifications Operating Temperature Range: -40°C to +70°C Storage Temperature Range: -40°C to +85°C Vibration Resistance: 10 to 55 Hz, 1.5 mm double amplitude Shock Resistance: 1,000 m/s² Life Expectancy Mechanical Life: ≥ 100 million operations Electrical Life: ≥ 100,000 operations (at rated load) Applications Telecommunications equipment Test and measurement instruments Audio signal routing Industrial control systems Consumer electronics Package Information Manufacturer: Omron Electronics Series: G6K Part Number: G6K-2P-Y DC5 #commonpartslibrary #relay
192 Uses0 Stars
