Overview
The SM712-02HTG TVS Diode Array, produced by Littelfuse Inc., is designed to protect RS-485 applications with asymmetrical working voltages (-7V to 12V) from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges. This component integrates two 12V and two 7V TVS diodes in a single package, reducing the need for multiple discrete components and minimizing voltage over-shoot associated with trace inductance. The SM712-02HTG is particularly useful in applications requiring robust protection against various types of electrical surges and transients.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT23-3 |
| Number of Pins | 3 |
| Working Voltage Range | -7V to 12V |
| Breakdown Voltage | 13.3V |
| Clamping Voltage | 31V |
| Peak Pulse Current | 19A (8/20μs) |
| Peak Pulse Power | 600W |
| ESD Protection | IEC 61000-4-2, ±30kV contact, ±30kV air |
| EFT Protection | IEC 61000-4-4, 50A (5/50ns) |
| Lightning Protection | IEC 61000-4-5 2nd edition, 19A (tP=8/20μs) |
| Operating Temperature Range | -40°C to 125°C |
| Moisture Sensitivity Level | MSL-1 |
| AEC-Q101 Qualified | Yes |
| RoHS Compliance | Yes, lead-free |
Key Features
- RoHS compliant and lead-free
- ESD protection: IEC 61000-4-2, ±30kV contact, ±30kV air
- EFT protection: IEC 61000-4-4, 50A (5/50ns)
- Lightning protection: IEC 61000-4-5 2nd edition, 19A (tP=8/20μs)
- Low clamping voltage and low leakage current
- AEC-Q101 Qualified
- Moisture Sensitivity Level (MSL-1)
- Protects against repetitive ESD strikes without performance degradation
Applications
- RS-485 transceivers with extended common mode range
- Fieldbus, Modbus, Profibus
- DMX512
- Security systems
- Automated Teller Machines (ATMs)
- Lighting Control - DALI
- Communication equipment
Q & A
- What is the primary function of the SM712-02HTG TVS Diode Array?
The primary function is to protect RS-485 applications from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges. - What is the working voltage range of the SM712-02HTG?
The working voltage range is -7V to 12V. - What is the peak pulse current rating of the SM712-02HTG?
The peak pulse current rating is 19A (8/20μs). - Is the SM712-02HTG RoHS compliant?
Yes, it is RoHS compliant and lead-free. - What is the operating temperature range of the SM712-02HTG?
The operating temperature range is -40°C to 125°C. - What standards does the SM712-02HTG meet for ESD protection?
It meets IEC 61000-4-2 standards for ESD protection, with ±30kV contact and ±30kV air. - What is the moisture sensitivity level of the SM712-02HTG?
The moisture sensitivity level is MSL-1. - Is the SM712-02HTG AEC-Q101 Qualified?
Yes, it is AEC-Q101 Qualified. - What types of applications can the SM712-02HTG be used in?
It can be used in RS-485 transceivers, Fieldbus, Modbus, Profibus, DMX512, security systems, ATMs, and lighting control systems like DALI. - What package type does the SM712-02HTG come in?
The SM712-02HTG comes in a SOT23-3 package.
