Power Electronic Tips

Solid-state relay switches 100 V in 0.1 ms

Redding Traiger — Wed, 09 Oct 2024 18:13:33 +0000

Vishay Intertechnology, Inc. introduced the industry’s first 1 Form A solid-state relay to offer AEC-Q102 qualification and a 100 V load voltage. Offered in the low profile SOP-4 package, the Vishay Semiconductors VORA1010M4 delivers the industry’s fastest turn-on and turn-off times of 0.1 ms typical, in addition to the highest operating temperature of +125 °C.

The fast turn-off time of the optically isolated device released today is a result of its integrated turn-off circuit, while its combination of a state-of-the-art infrared emitter and photovoltaic diode array delivers its fast turn-on time. This switching performance makes the solid-state relay ideal for safety-critical applications, while its compact SOP-4 package saves space over competing solutions in the DIP-4 package.

Offering an isolation voltage of 3750 VRMS, the Automotive Grade VORA1010M4 is designed to provide clean, bounce-free switching for glass dimming, lighting control, inverters, motor controls, and battery management systems (BMS) in electric (EV) and hybrid electric (HEV) vehicles; industrial motor drives and controls; security and automation systems; and telecom servers and data centers.

Available in tape-and-reel packing, the device is RoHS-compliant, halogen-free, and Vishay Green.

Samples and production quantities of the VORA1010M4 are available now, with lead times of eight weeks.

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40 A automotive relay shaves 2 mm in size, making for more compact designs

Redding Traiger — Tue, 25 Jun 2024 18:12:37 +0000

FCL Components America, Inc. has released the market’s smallest, low power 40A, automotive grade, PCB-mounted relay, the FBR53-LE. Because this relay is more than 2 mm lower in height than others in its class, it helps enable more compact designs.

The FBR53-LE is a 1 Form U (Form A with twin contacts) relay that measures 15.7(L) x 12.3(W) x 14(H) mm, with a volume of 2,704 mm3. Its maximum carrying current is 54A for 1 hour, and its maximum inrush current is 200A. It has a contact rating of 14VDC, 40A, and a nominal coil power of 640mW. Its operating temperature ranges from -40degC to +125degC degrees, making it an ideal fit for engine compartments.

Developed at customer requests as a 40A lower-heat and lower-power-consumption follow-up to FCL Components’ FBR53-HW 40A relay, the FBR53-LE can seamlessly replace the FBR53-HW without altering its terminal arrangement. The single-pole FBR53-LE is capable of switching heavy loads for fuel and electric vehicle applications including electric power steering, blower/fan motor, starter controller, and infotainment systems. Reducing the power consumption of the coil (W = V x I = V2 / R) compared to FBR53-HW enables heat generation to be suppressed. This can also reduce battery consumption in EVs and other vehicles with limited battery power.

This plastic sealed type relay is RoHS compliant and uses a silver tin oxide contact material. The FBR53-LE can replace the mini ISO, and a reflow capable (through hole reflow) type is also available.

Samples are available now. Please contact one of our local FCL Components Sales Representatives for more information.

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An overview of power relays

Aimee Kalnoskas — Mon, 24 Jun 2024 13:26:22 +0000

Like their signal relay counterparts, power relays are devices that use a low-power signal to control a high-power circuit. While all relays control power, not all relays are correctly termed “power relays,” which are specifically designed to handle high-level current switching from several amps to much larger amounts. A power relay’s built-in capacity to control higher currents due to its bigger size and more robust coils makes it a good choice for switching currents from 10 amps and beyond. Application examples range from elevators, automotive systems, and valve actuators to devices with high initial current surges, such as solenoids, motors, and power supplies.

The CUI Insights blog post, “An Introduction to Power Relays” explains the basic operation and specifications of power relays in greater detail. It also discusses the differences between power relays, signal relays, and solid-state relays, while covering power relay contact materials, configurations, and more.

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