Overview
The SM712 TVS Diode Array, produced by MDD (Microdiode Semiconductor), is specifically designed to protect multi-point data transmission in standard RS-485 applications from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges. This diode array operates within an asymmetrical working voltage range of -7V to 12V, making it ideal for various communication and data transmission systems.
Key Specifications
| Parameter | Value |
|---|---|
| Reverse Stand-Off Voltage (Vrwm) | 12V |
| Clamping Voltage (Vc Max) | 26V |
| Breakdown Voltage Min | 13.3V |
| Peak Pulse Current (Ippm) | 17A |
| Peak Pulse Power Dissipation | 400W |
| Diode Case Style | SOT-23 |
| No. of Pins | 3 Pins |
| Operating Temperature Range | -55°C to 125°C |
| Current Rating | 1µA |
Key Features
- Integrates two 12V and two 7V TVS diodes in a single SOT-23 package, reducing the need for multiple discrete components.
- Low clamping voltage of 26V minimizes stress on the protected transceiver.
- Designed to absorb repetitive ESD strikes and safely dissipate up to 19A of 8/20us induced surge current.
- Operates within an asymmetrical working voltage range of -7V to 12V, suitable for RS-485 applications.
- Low capacitance ESD protection.
- Wide operating temperature range of -55°C to 125°C.
Applications
- RS-485 data transmission systems.
- Industrial control systems.
- Consumer electronics.
- Communication systems.
- Home appliances.
- Medical devices.
- Lighting and security systems.
- Instruments and meters.
Q & A
- What is the primary function of the SM712 TVS Diode Array?
The SM712 TVS Diode Array is designed to protect RS-485 applications from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges.
- What is the operating voltage range of the SM712?
The SM712 operates within an asymmetrical working voltage range of -7V to 12V.
- What is the clamping voltage of the SM712?
The clamping voltage of the SM712 is 26V.
- What is the peak pulse current rating of the SM712?
The peak pulse current rating of the SM712 is 17A.
- What package type does the SM712 come in?
The SM712 comes in a 3-pin SOT-23 package.
- What is the operating temperature range of the SM712?
The operating temperature range of the SM712 is -55°C to 125°C.
- Can the SM712 absorb repetitive ESD strikes?
Yes, the SM712 can absorb repetitive ESD strikes above the maximum level specified in the IEC 61000-4-2 international standard without performance degradation.
- What are some common applications of the SM712?
The SM712 is commonly used in RS-485 data transmission systems, industrial control systems, consumer electronics, communication systems, and more.
- Does the SM712 reduce the need for multiple discrete components?
Yes, the SM712 integrates two 12V and two 7V TVS diodes in a single package, reducing the need for multiple discrete components.
- Is the SM712 suitable for high-temperature environments?
Yes, the SM712 has a wide operating temperature range of -55°C to 125°C, making it suitable for high-temperature environments.
