What does the “Ron” or “On Resistance” value mean in the Opto-MOS Relay data sheet? - FAQs | Bright Toward Industrial Co., LTD.

The “Ron” or “On-Resistance” value in the data-sheet refers to the resistance value between the drain and the source of the relay during operation. The smaller the value is, the lesser the power loss. Our Opto-MOSFET Relays can provide ultra low on-resistance down to 0.02Ω. Below are our most popular Opto-MOSFET Relays with low on-resistance values. 28 Series: 40V/4.5A/0.02Ω 42 Series: 60V/2A/0.02Ω 24 Series: 40V/3.5A/0.027Ω 26 Series: 40V/3.5A/0.033Ω 36 Series: 60V/2.5A/0.07Ω 38 Series: 650V/800mA/1Ω 52 Series: 1700V/350mA/2.2Ω Manufacturer of Opto-MOSFET Solid State Relays, Reed Relays, and RF MEMS Switches. We mainly serve the Semiconductor Testing, ATE, BMS (Battery Management Systems), industrial machinery and Electric Vehicle industries.

What does the “Ron” or “On Resistance” value mean in the Opto-MOS Relay data sheet?

Bright Toward Industrial Co., Ltd is a manufacturer of Solid State Relays, Reed Relays and RF MEMS Switches.

What does the “Ron” or “On Resistance” value mean in the Opto-MOS Relay data sheet?

The “Ron” or “On-Resistance” value in the data-sheet refers to the resistance value between the drain and the source of the relay during operation. The smaller the value is, the lesser the power loss. Our Opto-MOSFET Relays can provide ultra low on-resistance down to 0.02Ω.

Below are our most popular Opto-MOSFET Relays with low on-resistance values.


28 Series: 40V/4.5A/0.02Ω
42 Series: 60V/2A/0.02Ω
24 Series: 40V/3.5A/0.027Ω
26 Series: 40V/3.5A/0.033Ω
36 Series: 60V/2.5A/0.07Ω
38 Series: 650V/800mA/1Ω
52 Series: 1700V/350mA/2.2Ω

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B.T - A professional manufacturer of Relays in various industries all over the world.

Located in Taiwan since 1988, Bright Toward Industrial Co., LTD. is a relay supplier and manufacturer. Main products, including Opto-MOSFET Relays, Opto-SiC MOSFET Relays, Solid State Relays, Reed Relays, And RF MEMS Switches, etc.

B.T supplies relays to the world's semiconductor and automotive industries for over three decades and has long term long-term partnerships with OKITA Works based in Japan; Menlo Microsystems based in California; JEL Systems based in Japan and Teledyne Relays and Coax Switches based in California. Mainly serve the Semiconductor Testing, ATE, BMS (Battery Management Systems), industrial machinery and Electric Vehicle industries.

B.T has been offering customers high-quality Opto-MOSFET and Opto-SiC MOSFET relays since 1988, both with advanced technology and 30 years of experience, B.T ensures each customer's demands are met.