Overview
The ESD321DPYR is a uni-directional TVS (Transient Voltage Suppressor) ESD protection diode manufactured by Texas Instruments. This device is designed to provide robust protection against electrostatic discharge (ESD) events, ensuring the safety and reliability of high-speed data interfaces. The ESD321DPYR is rated to dissipate ESD strikes up to ±30 kV per the IEC 61000-4-2 international standard, exceeding Level 4 requirements. It features ultra-low dynamic resistance and extremely low clamping voltage, making it suitable for protecting sensitive electronic components in various applications.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reverse Stand-off Voltage (VRWM) | IIO < 50 nA, across operating temperature range | 3.6 | V | ||
| Leakage Current (ILEAKAGE) | VIO = 3.6 V, I/O to GND | 0.1 | 10 | nA | |
| Breakdown Voltage (VBRF) | IIO = 1 mA | 4.5 | 7.5 | V | |
| Forward Voltage (VFWD) | IIO = 1 mA | 0.8 | V | ||
| Clamping Voltage (VCLAMP) | IPP = 16 A (100 ns TLP), I/O to GND | 6.8 | V | ||
| Dynamic Resistance (RDYN) | I/O to GND, 100 ns TLP, between 10 to 20 A IPP | 0.13 | Ω | ||
| Line Capacitance (CLINE) | VIO = 0 V, Vp-p = 30 mV, f = 1 MHz | 0.9 | 1.1 | pF | |
| Operating Temperature Range | -40 | 125 | °C | ||
| Package | 0402 (DPY/DFN1006P2), SOD-523 (DYA) |
Key Features
- IEC 61000-4-2 Level 4 ESD protection: ±30-kV contact and air gap discharge
- IEC 61000-4-4 EFT protection: up to 80 A (5/50 ns)
- IEC 61000-4-5 surge protection: up to 6 A (8/20 µs)
- Ultra-low dynamic resistance: 0.13 Ω (I/O to GND)
- Extremely low clamping voltage: 6.8 V at 16 A TLP (I/O to GND)
- Low capacitance: 0.9 pF (typical)
- Low leakage current: 0.1 nA (typical)
- Industrial temperature range: -40°C to +125°C
- Industry standard packages: 0402 (DPY/DFN1006P2) and SOD-523 (DYA)
Applications
The ESD321DPYR is designed to protect high-speed data interfaces from ESD events. Common applications include:
- USB 2.0 interfaces
- Ethernet 10/100/1000 Mbps interfaces
- Other high-speed signal lines requiring ESD protection
The device is particularly useful in scenarios where sensitive electronic components need protection against transient voltage events, ensuring system reliability and performance.
Q & A
- What is the ESD protection level of the ESD321DPYR?
The ESD321DPYR provides IEC 61000-4-2 Level 4 ESD protection, capable of withstanding ±30-kV contact and air gap discharges.
- What are the key features of the ESD321DPYR?
Key features include ultra-low dynamic resistance, extremely low clamping voltage, low capacitance, and low leakage current.
- What types of interfaces can the ESD321DPYR protect?
The ESD321DPYR can protect high-speed data interfaces such as USB 2.0 and Ethernet 10/100/1000 Mbps.
- What is the operating temperature range of the ESD321DPYR?
The operating temperature range is -40°C to +125°C.
- What packages are available for the ESD321DPYR?
The device is available in industry standard 0402 (DPY/DFN1006P2) and SOD-523 (DYA) packages.
- How does the ESD321DPYR protect against ESD events?
During an ESD event, the ESD diode turns on and diverts the current to ground, clamping the voltage to a safe level for the protected IC.
- What is the typical capacitance of the ESD321DPYR?
The typical capacitance is 0.9 pF.
- Does the ESD321DPYR require power to operate?
No, the ESD321DPYR is a passive ESD device and does not require power to operate.
- What are the layout guidelines for using the ESD321DPYR?
The device should be placed as close to the connector as possible, and protected traces should be routed straight with rounded corners to minimize EMI coupling.
- Is the ESD321DPYR compliant with RoHS regulations?
