Overview
The DA112S1 is a diode array produced by STMicroelectronics, designed to protect signal lines from transient overvoltages. This component is configured as an array of 12 diodes, grouped into cells of two diodes each, which work together to clamp and protect signal lines from voltage surges.
The DA112S1 is suitable for various applications requiring digital line protection, including the protection of logic sides of ISDN S-interfaces and I/O lines of microcontrollers. It operates within a maximum input voltage range of either 0 V to 18 V or -9 V to +9 V, depending on the reference voltages REF1 and REF2.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Diodes | 12 | |
| Repetitive Peak Reverse Voltage (VRRM) | 18 | V |
| Repetitive Peak Forward Current (IPP) | 12 | A (tp = 8/20 µs) |
| Power Dissipation | 0.73 | W |
| Storage Temperature Range | -55 to +150 | °C |
| Operating Junction Temperature Range | -55 to +150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C (for 10 s) |
| Peak Forward Voltage (VFP) | 12 | V (at IPP = 12 A, tp = 8/20 µs) |
| Forward Voltage (VF) | 1.2 | V (at IF = 50 mA) |
| Reverse Leakage Current (IR) | 2 | µA (at VR = 15 V) |
| Junction to Ambient Thermal Resistance (Rth (j-a)) | 170 | °C/W |
| Package Style | SO-8 | |
| Mounting Method | Surface Mount |
Key Features
- Array of 12 diodes configured in cells of two diodes each for transient overvoltage protection.
- Suitable for digital line protection, complying with IEC 61000-4-2 Level 4 standards (15kV air discharge, 8kV contact discharge).
- Low input capacitance, making it ideal for high-speed applications.
- Operates within a maximum input voltage range of either 0 V to 18 V or -9 V to +9 V.
- Wide operating temperature range from -55°C to +150°C.
- ECOPACK® lead-free second level interconnect, meeting environmental requirements.
Applications
- Protection of the logic side of ISDN S-interfaces.
- Protection of I/O lines of microcontrollers.
- Signal conditioning in various electronic systems.
- General-purpose transient voltage suppression in digital circuits.
Q & A
- What is the DA112S1 used for?
The DA112S1 is used to protect signal lines from transient overvoltages by clamping action.
- How many diodes are in the DA112S1 array?
The DA112S1 array consists of 12 diodes.
- What is the maximum repetitive peak reverse voltage (VRRM) of the DA112S1?
The maximum repetitive peak reverse voltage (VRRM) is 18 V.
- What are the operating temperature ranges for the DA112S1?
The DA112S1 operates within a temperature range of -55°C to +150°C.
- What is the package style of the DA112S1?
The DA112S1 comes in an SO-8 package style.
- Is the DA112S1 RoHS compliant?
- What are the typical applications of the DA112S1?
The DA112S1 is typically used for protecting ISDN S-interfaces, microcontroller I/O lines, and general signal conditioning.
- What is the maximum lead temperature for soldering the DA112S1?
The maximum lead temperature for soldering is 260°C for 10 seconds.
- What is the peak forward voltage (VFP) of the DA112S1?
The peak forward voltage (VFP) is 12 V at IPP = 12 A and tp = 8/20 µs.
- How does the DA112S1 comply with ESD standards?
The DA112S1 complies with IEC 61000-4-2 Level 4 standards for ESD protection (15kV air discharge, 8kV contact discharge).
