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Texas Instruments ESD351DPYR
- Part No.:
- ESD351DPYR
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
ESD351DPYR.pdf
- Description:
- TVS DIODE 3.6VWM 6.5VC 2X1SON
- Quantity:
- Payment:
- Shipping:
Inventory:110,073
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Product details
Overview
ESD351DPYR from Texas Instruments is a uni-directional TVS ESD protection diode in a 0402 X1SON (DPY) package, rated for ±30-kV IEC 61000-4-2 contact/air discharge, with 1.8 pF typical line capacitance and 6.5 V clamping voltage at 16-A TLP-designed specifically for USB 2.0 data-line (D+/D−) protection in space-constrained portable electronics.
For engineers reviewing the ESD351DPYR datasheet, ESD351DPYR pinout, ESD351DPYR application, or ESD351DPYR equivalent, this device delivers verified low-clamp transient suppression with minimal signal integrity impact on high-speed interfaces up to 480 Mbps, validated for industrial temperature operation (–40°C to +125°C) and RoHS-compliant large-reel supply.
Technical Context
The ESD351DPYR operates as a passive, uni-directional clamping diode triggered above 4.5 V breakdown (I/O to GND), with ultra-low dynamic resistance (0.1 Ω) ensuring rapid energy diversion during ESD events. Its 1.8 pF capacitance and 0.1 nA leakage at 3.6 V enable transparent integration into USB 2.0 differential pairs without degrading signal rise time or insertion loss.
It meets IEC 61000-4-2 Level 4 (±30 kV), IEC 61000-4-4 (80 A EFT), and IEC 61000-4-5 (6 A surge) standards while maintaining DC operating compatibility across 0–3.6 V signal range-making it suitable for direct placement adjacent to USB connectors without biasing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2 Level 4)-guarantees robust system-level immunity against human-body ESD events. |
| Clamping Voltage | 6.5 V at 16-A TLP (I/O to GND)-limits voltage seen by downstream USB transceiver during fast transients. |
| Line Capacitance | 1.8 pF typical (IO–GND)-preserves USB 2.0 signal integrity up to 240 MHz with <1 dB insertion loss at 5 GHz. |
| Breakdown Voltage | 4.5 V minimum (I/O to GND at 1 mA)-ensures reliable triggering before damage threshold of 3.3/3.6-V logic interfaces. |
| Leakage Current | 0.1 nA typical at 3.6 V-prevents signal degradation or power drain in battery-powered wearables and mobile devices. |
| Package | X1SON (DPY), 0.60 mm × 1.00 mm, 0.45 mm max height-enables ultra-compact layout adjacent to USB micro-B or Type-C connectors. |
| Operating Temp | –40°C to +125°C-supports deployment in industrial robots, automotive infotainment, and outdoor set-top boxes. |
Pinout & Package
ESD351DPYR uses the industry-standard 2-pin X1SON (DPY) package-0.60 mm × 1.00 mm body, 0.45 mm max height-with exposed thermal pad and flow-through routing optimized for minimal PCB trace stubs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IO) | I/O Pin | Connects directly to protected signal line (e.g., USB D+ or D−); carries full ESD current to ground during clamping. |
| 2 (GND) | Ground Terminal | Low-inductance connection to system ground plane; critical for achieving specified 6.5 V clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low clamping voltage | 6.5 V at 16-A TLP ensures protected ICs (e.g., USB PHY) remain below absolute maximum ratings during ESD strikes. |
| Low dynamic resistance | 0.1 Ω (I/O to GND) enables faster energy dissipation and tighter voltage control versus higher-RDYN alternatives. |
| Minimal signal loading | 1.8 pF capacitance avoids USB 2.0 eye diagram distortion and maintains 480-Mbps compliance without equalization. |
| Industrial temperature support | Rated from –40°C to +125°C-validates use in robotics motor-control boards and automotive USB hubs without derating. |
| Standardized 0402 footprint | DPY package matches IPC-7351B DFN1006P2 land pattern-enables drop-in replacement and automated assembly compatibility. |
Applications
| USB 2.0 Data-Line Protection | Wearable Device Interface Protection |
|---|---|
|
Use Scenario: Protecting D+/D− lines between USB connector and transceiver IC in laptops, tablets, and docking stations. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed within 3 mm of connector to shunt ESD current before reaching PHY. Use Value: 1.8 pF capacitance prevents signal integrity loss at 480 Mbps; 6.5 V clamping prevents latch-up in 3.3-V USB PHYs. |
Use Scenario: ESD hardening of touch-button, sensor, or charging port interfaces in smartwatches and hearables. IC Role / Device Role / Timing Role: Standalone protection element on low-voltage GPIO or audio paths (<3.6 V swing). Use Value: 0.1 nA leakage preserves battery life over multi-year wearable deployments; 0402 size fits sub-10-mm PCB real estate. |
| Industrial Robot Control Panel | Set-Top Box USB Host Port |
|
Use Scenario: Securing front-panel USB ports on service robots exposed to repeated operator contact in factory environments. IC Role / Device Role / Timing Role: Primary ESD barrier on USB host lines interfacing with external peripherals (keyboards, flash drives). Use Value: –40°C to +125°C rating ensures reliability under thermal cycling in unventilated enclosures; ±30 kV rating exceeds EN 61000-6-2 requirements. |
Use Scenario: Protecting USB host controller inputs in consumer STBs subject to user-handled cable insertions. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke, absorbing residual differential-mode ESD. Use Value: 80 A EFT rating withstands repetitive switching noise from nearby AC/DC converters; RoHS-compliant NiPdAu finish supports lead-free reflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Bi-directional configuration; 1.0 pF capacitance; 12-V clamping at 16-A TLP. | Better suited for symmetric signal lines (e.g., HDMI, DisplayPort); higher clamping limits use with 3.3-V-only PHYs. | Select when protecting bidirectional or AC-coupled interfaces where lower capacitance outweighs clamping voltage trade-off. |
| ESD8008MUTAG | Uni-directional; 0.65 pF capacitance; 9.5 V clamping at 16-A TLP; SOD-523 package (1.2 × 0.8 mm). | Larger footprint; higher clamping requires margin in 3.3-V systems; optimized for RF antenna line protection. | Choose only if board layout permits larger SOD-523 placement and system tolerates >9 V transient overshoot. |
Compared with TPD2E001DRYR and ESD8008MUTAG, ESD351DPYR provides the lowest clamping voltage (6.5 V) in the smallest 0402-compatible footprint-making it optimal for USB 2.0 where both signal fidelity and strict voltage headroom are critical.
Availability
ESD351DPYR is available at Aetrix Electronics and suitable for USB 2.0 interface protection, wearable electronics ESD hardening, and industrial robot control panel designs requiring stable component supply across extended product lifecycles.
Supply support for ESD351DPYR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and consumer applications.
The ESD351 series was developed to deliver ultra-low-clamp, low-capacitance ESD protection for high-speed digital interfaces-specifically targeting USB 2.0, GPIO, and audio lines in miniaturized portable and industrial systems.
FAQ
What is the primary function of the ESD351DPYR in a USB 2.0 design?
The ESD351DPYR serves as a uni-directional TVS diode that clamps transient voltages on USB D+/D− lines during ESD events, limiting the peak voltage seen by the USB transceiver to 6.5 V at 16-A TLP. Its 1.8 pF capacitance ensures minimal signal distortion at 480 Mbps, and its 0402 X1SON package allows placement within 3 mm of the USB connector-critical for effective system-level ESD immunity per IEC 61000-4-2 Level 4. The ESD351DPYR requires no external bias and operates across the full 0–3.6 V USB signal range.
Does the ESD351DPYR support bi-directional signal lines like USB differential pairs?
Yes-the ESD351DPYR is configured as a uni-directional device but is applied in pairs (one per D+ and one per D−) to protect the full USB 2.0 differential interface. Each ESD351DPYR connects between its respective data line and ground, providing independent clamping for positive and negative transients. This dual-device arrangement achieves full ±30 kV IEC 61000-4-2 protection without compromising signal symmetry or introducing common-mode imbalance, as confirmed in TI's USB 2.0 reference schematic (Figure 10, SLVSEO3).
What is the maximum recommended trace length between the ESD351DPYR and the USB connector?
Texas Instruments recommends placing the ESD351DPYR within 3 mm of the USB connector to minimize inductance in the ESD current path. Longer traces increase impedance, raising clamped voltage and reducing protection effectiveness-especially critical for 16-A TLP events where even 1 nH of trace inductance adds ~1.6 V overshoot. The ESD351DPYR's flow-through routing and 0.60 mm × 1.00 mm DPY package are designed to support this constraint, and TI's layout guidelines (Section 10.1) emphasize minimizing loop area between IO and GND pins using short, straight, rounded-corner traces.
Can the ESD351DPYR be used to protect 5-V tolerant interfaces such as VBUS or legacy UART lines?
No-the ESD351DPYR is rated for a maximum reverse stand-off voltage (VRWM) of 3.6 V and a DC breakdown voltage (VBRF) minimum of 4.5 V, making it unsuitable for direct protection of 5-V lines like USB VBUS. Applying it to 5-V signals risks premature conduction or degradation. For VBUS protection, TI recommends dedicated 5-V-rated devices such as the TPD4S012 or ESD7L5.0DT5G. The ESD351DPYR is strictly intended for data-line protection (D+/D−, GPIO, audio) operating ≤3.6 V, as defined in its Recommended Operating Conditions table (Section 6.4).
How does the ESD351DPYR's 0.1 Ω dynamic resistance improve system-level ESD performance?
The ESD351DPYR's 0.1 Ω dynamic resistance (RDYN) between I/O and GND reduces voltage overshoot during fast ESD transients by minimizing the IR drop across the protection path. At 16-A TLP current, this yields only ~1.6 V resistive contribution-enabling the total clamped voltage to stay at 6.5 V. Lower RDYN also shortens the clamping response time, allowing the device to enter low-impedance state faster than higher-RDYN alternatives, thereby reducing energy delivered to the protected IC. This parameter is measured per JEDEC JESD62-1 and validated in TI's TLP I-V curves (Figures 1–2, SLVSEO3).
ESD351DPYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 0402 (1006 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.6V
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- 6.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- Power - Peak Pulse:
- 36W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1.8pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-X1SON (1x.60)
ESD351DPYR FAQ
1.How can I place an order for ESD351DPYR through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD351DPYR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ESD351DPYR reliable?
The price and inventory of ESD351DPYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD351DPYR is usually 5 days.
3.What payment methods are accepted for ESD351DPYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD351DPYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD351DPYR?
ESD351DPYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD351DPYR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ESD351DPYR?
For technical support, including ESD351DPYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD351DPYR requirements.
6.How does Aetrix verify that ESD351DPYR is sourced from the original manufacturer or authorized distributors?
All ESD351DPYR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ESD351DPYR meets industry standards.
7.What is the process for return or replacement of ESD351DPYR?
All ESD351DPYR units undergo pre-shipment inspection (PSI). If there is an issue with ESD351DPYR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ESD351DPYR part is unused and in its original packaging.
Return procedure for ESD351DPYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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