SEARCH
— IC芯片 | 连接器 | 传感器 | 被动器件 —

Power Relays over 2 Amps are an electromechanical device which turns a large load on or off through the use of a smaller control signal. The contacts on these devices have a rating of 2 A, 3A, 3.5A, 4A, 5A, 6A, 7A, 7.5A, 8A, 8.5A, 9A, 10A, 11A, 12A, 14A, 15A, 16A, 18A, 20A, 21A, 23A, 25A, 26A, 30A, 31A, 32A, 33A, 35A, 40A, 48A, 50A ,60A, 90A, 100A, 120A, 150A, 200A, 400A, and 750A.
| Select products | Mfr | Description | Package | Supplier Device Package | Mounting Type | Series | Operating Temperature |
|---|---|---|---|---|---|---|---|
![]() 3TX71121LB03 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,DPDT,10A, | Box | - | - | - | |
![]() 3TX71121LC03 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,DPDT,10A, | Box | - | - | - | |
![]() 3TX71121LC13 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,DPDT,10A, | Box | - | - | - | |
![]() 3TX71121LF13 $75.68 | Siemens | PREM PLUG-IN RELAY,OCT,DPDT,10A, | Box | - | - | - | |
![]() 3TX71121LG13 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,DPDT,10A, | Box | - | - | - | |
![]() 3TX71121NC03 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,3PDT,10A, | Box | - | - | - | |
![]() 3TX71121NC13 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,3PDT,10A, | Box | - | - | - | |
![]() 3TX71121NF13 $56.98 | Siemens | PREM PLUG-IN RELAY,OCT,3PDT,10A, | Box | - | - | - |

Learn what an IMU measures, how accelerometers and gyroscopes work together, why orientation estimates drift, and what to compare.
Read More
Learn the relay definition, coil and contact operation, NO and NC forms, load ratings and suppression choices. Compare mechanical, reed and solid-state types.
Read More
Learn how a diode conducts, how to identify anode and cathode, and when to choose rectifier, TVS, Zener or photodiode types for a circuit.
Read More
Understand tactile switches, PCB and keyboard differences, four-pin wiring, debounce, force, travel and replacement checks for reliable control inputs.
Read MoreLatest updates from leading semiconductor manufacturers: Wolfspeed launches new SiC modules, AMD reveals MI430X with HBM4, TSMC eyes third Japan fab, and Samsung samples…
Read MoreMay 8, 2026 – Eindhoven, Netherlands NXP Semiconductors (NXPI), a global leader in automotive and industrial semiconductor solutions, has officially notified its worldwide channel…
Read More
Tokyo / Munich / Tessenderlo, December 24, 2025As the global semiconductor industry enters the first year of the 2nm process era, international electronic component…
Read More
Understand RF attenuator dB values, fixed and programmable types, impedance, power limits and noise tradeoffs before choosing parts for an RF signal path.
Read More
Recently, a survey by the Electronic Components Industry Association (ECIA) revealed that the sales sentiment of global electronic components remained optimistic in the third…
Read More
Monolithic Power Systems (MPS), a global leader in analog and mixed-signal semiconductors, has notified its distribution partners of an upcoming price increase for selected…
Read More
Manchester, New Hampshire, USA – March 22, 2026 – Allegro MicroSystems, Inc. (Nasdaq: ALGM), a global leader in high-performance power and sensing semiconductor solutions…
Read More
Understand how a comparator switches at a voltage threshold, why hysteresis prevents chatter, and which output and input specs matter.
Read More