Overview
The SRDA3.3-4DR2G is a low capacitance surge protection diode array designed and manufactured by onsemi. This device is specifically engineered to protect sensitive electronics from damage caused by Electrostatic Discharge (ESD) events and transient overvoltage conditions. It integrates surge-rated, low capacitance steering diodes and a surge protection diode in a single SO-8 package, making it ideal for high-speed data interfaces and communication systems.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reverse Stand-Off Voltage | VRWM | - | - | 3.3 | V |
| Reverse Breakdown Voltage @ It = 1.0 mA | VBR | 5.0 | - | - | V |
| Reverse Leakage Current @ VRWM = 3.3 V | IR | - | 2.8 | 5.0 | μA |
| Maximum Clamping Voltage @ IPP = 1.0 A, 8 x 20 μs | VC | - | 5.9 | 7.0 | V |
| Maximum Clamping Voltage @ IPP = 10 A, 8 x 20 μs | VC | - | 7.1 | 10 | V |
| Maximum Clamping Voltage @ IPP = 25 A, 8 x 20 μs | VC | - | 9.0 | 15 | V |
| Peak Power Dissipation 8 x 20 μs @ TA = 25°C | Ppk | - | - | 500 | W |
| Capacitance @ VR = 0 V, f = 1.0 MHz | CJ | - | 8.0 | 15 | pF |
| Junction and Storage Temperature Range | TJ, Tstg | -55 | - | 150 | °C |
| Lead Solder Temperature - Maximum 10 Seconds Duration | TL | - | - | 260 | °C |
| IEC 61000-4-2 Contact Air ESD | - | ±8 | - | ±15 | kV |
| IEC 61000-4-4 (5/50 ns) EFT | - | - | - | 40 | A |
| IEC 61000-4-5 (8 x 20 μs) Lightning | - | - | - | 25 | A |
Key Features
- Protects up to four I/O lines against ESD and transient overvoltage conditions.
- Low working voltage of 3.3 V and low clamping voltage.
- Low capacitance (<15 pF) suitable for high-speed data interfaces.
- Peak power dissipation of 500 W (8 x 20 μs).
- Compliant with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Lightning) standards.
- UL flammability rating of 94 V-0.
- Pb-free device.
- Integrated surge protection diode and steering diodes in a single SO-8 package.
Applications
- High-speed communication line protection.
- T1/E1 and T3/E3 secondary protection.
- Analog video protection.
- Base stations.
- I2C bus protection.
- USB port protection.
- Ethernet 10/100 (differential mode) PHY protection.
Q & A
- What is the primary function of the SRDA3.3-4DR2G?
The SRDA3.3-4DR2G is designed to protect sensitive electronics from ESD events and transient overvoltage conditions, particularly in high-speed data interfaces.
- How many I/O lines can the SRDA3.3-4DR2G protect?
The SRDA3.3-4DR2G can protect up to four I/O lines.
- What is the working voltage of the SRDA3.3-4DR2G?
The working voltage of the SRDA3.3-4DR2G is 3.3 V.
- What are the key standards the SRDA3.3-4DR2G complies with?
The SRDA3.3-4DR2G complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Lightning) standards.
- What is the peak power dissipation of the SRDA3.3-4DR2G?
The peak power dissipation of the SRDA3.3-4DR2G is 500 W (8 x 20 μs).
- Is the SRDA3.3-4DR2G a Pb-free device?
Yes, the SRDA3.3-4DR2G is a Pb-free device.
- What is the typical capacitance of the SRDA3.3-4DR2G?
The typical capacitance of the SRDA3.3-4DR2G is less than 15 pF.
- How should the SRDA3.3-4DR2G be configured for optimal performance?
The SRDA3.3-4DR2G should be configured to minimize PCB trace lengths and ground inductance. It can be configured with or without a positive supply reference, depending on the application.
- What are some common applications of the SRDA3.3-4DR2G?
Common applications include high-speed communication line protection, T1/E1 and T3/E3 secondary protection, analog video protection, base stations, I2C bus protection, and USB port protection.
- What is the UL flammability rating of the SRDA3.3-4DR2G?
The UL flammability rating of the SRDA3.3-4DR2G is 94 V-0.
