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STMicroelectronics ESDX051-2BU3
- Part No.:
- ESDX051-2BU3
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
ESDX051-2BU3.pdf
- Description:
- TVS DIODE 5VWM 34VC 0201
- Quantity:
- Payment:
- Shipping:
Inventory:29,410
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Product details
Overview
ESDX051-2BU3 from STMicroelectronics is a bidirectional dual-line TVS diode for ESD protection of high-speed differential interfaces, featuring 0.13 pF typical line capacitance, ±8 kV contact/±15 kV air IEC 61000-4-2 compliance, and 13–15 V clamping voltage at 1 A (8/20 µs), deployed in smartphones and wearable I/O ports.
For engineers reviewing the ESDX051-2BU3 datasheet, ESDX051-2BU3 pinout, ESDX051-2BU3 application, or ESDX051-2BU3 equivalent, key selection criteria include ultra-low capacitance for signal integrity, 0201 footprint constraints, bidirectional transient clamping performance, and ECOPACK2 environmental compliance in space-constrained portable electronics.
Technical Context
The ESDX051-2BU3 integrates two independent bidirectional TVS structures in a single 0201 package, each optimized for low-capacitance (<0.19 pF max) and fast response to ESD transients per IEC 61000-4-2 Level 4. Its dynamic resistance is 1.5 Ω, enabling tight clamping (34 V peak at 8 kV contact discharge) with minimal voltage overshoot.
Designed for high-frequency data lines, it achieves >40 GHz cutoff frequency and only 0.24 dB insertion loss at 10 GHz, confirming suitability for USB 3.2 Gen 2, MIPI D-PHY, and LPDDR5 interfaces where parasitic capacitance directly impacts eye diagram integrity and bit error rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance per line | 0.13 pF typ. @ 3 GHz - preserves signal integrity on >5 Gbps differential links |
| Clamping voltage | 13–15 V @ 1 A, 8/20 µs - limits downstream IC stress below 16 V absolute max ratings |
| ESD rating | ±8 kV contact / ±15 kV air (IEC 61000-4-2 Level 4) - meets industrial handheld device immunity requirements |
| Stand-off voltage | 5 V max - compatible with 3.3 V and 5 V I/O rails without leakage-induced logic errors |
| Leakage current | 100 nA @ 5 V - avoids battery drain in always-on wearable sensors |
| Cut-off frequency | >40 GHz - ensures negligible attenuation up to millimeter-wave band edges |
| Package | ST0201 (0201) - occupies 0.12 mm² PCB area per line, enabling dense layout near connectors |
Pinout & Package
ESDX051-2BU3 uses the ST0201 (0201) surface-mount package: 0.62 mm × 0.32 mm × 0.20 mm body, 3-terminal configuration with Pin 1 and Pin 2 as protected I/O lines and Pin 3 as common cathode/anode reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode/cathode junction | Bidirectional ESD path for first high-speed data line (e.g., USB D+) |
| Pin 2 | Line 2 anode/cathode junction | Bidirectional ESD path for second data line (e.g., USB D−) |
| Pin 3 | Common reference terminal | Shared low-inductance return path to ground plane; must be connected with minimum trace length |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.13 pF typ. per line - enables use on 10+ Gbps serial interfaces without equalization penalty |
| Bidirectional dual-line protection | Single 0201 device protects two differential pairs - eliminates need for two discrete diodes and saves 0.2 mm² board area |
| Low dynamic resistance | 1.5 Ω - reduces clamping voltage overshoot during fast-rising ESD events (<1 ns rise time) |
| ECOPACK2 compliance | Halogen-free, RoHS-compliant materials - satisfies EU WEEE and China RoHS II regulatory requirements |
Applications
| Smartphone Front Camera Interface | Wireless Earbud Charging Case USB-C Port |
|---|---|
Use Scenario: Protecting MIPI CSI-2 differential pair between image sensor and AP from ESD during cable insertion or handling. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed within 2 mm of connector, shunting transients before reaching serializer IC. Use Value: 0.13 pF capacitance prevents >10% eye height degradation at 2.5 Gbps, maintaining pixel clock stability and reducing frame drop rate. | Use Scenario: Safeguarding USB-C CC and SBU lines in compact charging case against repeated plug/unplug ESD. IC Role / Device Role / Timing Role: Dual-line protector absorbing ±8 kV contact discharges while maintaining <0.24 dB insertion loss at 10 GHz. Use Value: Enables reliable USB PD negotiation and audio passthrough without false disconnect events caused by transient-induced logic glitches. |
| Fitness Tracker Touchscreen Flex Cable | Home Automation Zigbee Module Antenna Feed |
Use Scenario: Shielding I²C lines connecting capacitive touch controller to MCU from ESD induced by user finger contact. IC Role / Device Role / Timing Role: Low-leakage (100 nA) TVS preventing DC bias shift on 400 kHz bus while clamping spikes to <15 V. Use Value: Eliminates touchscreen ghost touches and firmware resets during daily wear, extending field failure MTBF beyond 5 years. | Use Scenario: Protecting RF front-end matching network inputs from ESD during module assembly or antenna handling. IC Role / Device Role / Timing Role: High-frequency-transparent protector placed between antenna switch and PA/LNA, preserving S11/S22 match. Use Value: Maintains >40 GHz cutoff and <0.3 dB RF loss, ensuring Zigbee channel 25 (2.4835 GHz) sensitivity remains ≥–97 dBm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.8 pF capacitance (6× higher), 12 V clamping, SOT-5X3 package (0.8 mm × 0.8 mm) | Acceptable for USB 2.0 (480 Mbps) but degrades eye diagram on USB 3.x or MIPI | Select when cost priority outweighs high-speed signal integrity and board space is unconstrained |
| ESD56081D05-2 | 0.25 pF capacitance, ±12 kV contact rating, same 0201 footprint | Suitable for mid-speed interfaces (e.g., I²S, SPI) but marginal for 5+ Gbps differential lanes | Choose when higher ESD margin is needed and 0.12 pF extra capacitance is tolerable in layout |
Compared with TPD2E001DRYR and ESD56081D05-2, ESDX051-2BU3 delivers the lowest capacitance (0.13 pF) in 0201, enabling direct placement on 10 Gbps+ differential traces without retiming or equalization-critical for next-gen mobile imaging and AR/VR interfaces.
Availability
ESDX051-2BU3 is available at Aetrix Electronics and suitable for smartphones, wearable health monitors, and high-density IoT gateways requiring stable component supply with full traceability and lifecycle management.
Supply support for ESDX051-2BU3 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
ESDX051-2BU3 belongs to ST's ESD protection portfolio targeting ultra-high-speed digital interfaces, engineered specifically to meet the capacitance and footprint demands of modern mobile and wireless connectivity systems.
FAQ
What is the maximum operating temperature for ESDX051-2BU3?
The ESDX051-2BU3 has a specified operating junction temperature range of –55 °C to +150 °C. This allows reliable operation in thermally demanding environments such as inside sealed smartphone chassis or near battery packs during fast charging, where localized PCB temperatures may exceed 100 °C under sustained load.
Can ESDX051-2BU3 protect both USB 3.2 Gen 2 and MIPI D-PHY v2.1 interfaces?
Yes-its 0.13 pF capacitance, >40 GHz cutoff frequency, and 0.24 dB insertion loss at 10 GHz meet the signal integrity requirements for both USB 3.2 Gen 2 (10 Gbps) and MIPI D-PHY v2.1 (4.5 Gbps). Layout validation per ST's recommended footprint ensures minimal impedance discontinuity at differential pair transitions.
Is reflow soldering compatible with the ST0201 package of ESDX051-2BU3?
Yes-ESDX051-2BU3 is qualified for standard lead-free reflow per IPC/JEDEC J-STD-020, with peak temperature up to 245 °C. ST recommends a ramp rate ≤3 °C/s, 60–90 s above 217 °C, and strict control of convection airflow to prevent tombstoning due to its 0.086 mg mass and asymmetric thermal profile.
How does the 3-pin configuration differ from single-line ESD diodes in layout?
The 3-pin ST0201 layout requires dedicated ground connection to Pin 3 with <0.5 mm trace length and direct stitching vias to inner ground planes. Unlike single-line diodes, this shared reference minimizes loop inductance across both protected lines-critical for maintaining balanced clamping during common-mode ESD events on differential pairs.
ESDX051-2BU3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 34V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- 15W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.13pF @ 3GHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 0201
ESDX051-2BU3 FAQ
1.How can I place an order for ESDX051-2BU3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDX051-2BU3 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 ESDX051-2BU3 reliable?
The price and inventory of ESDX051-2BU3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDX051-2BU3 is usually 5 days.
3.What payment methods are accepted for ESDX051-2BU3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDX051-2BU3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDX051-2BU3?
ESDX051-2BU3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDX051-2BU3 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 ESDX051-2BU3?
For technical support, including ESDX051-2BU3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDX051-2BU3 requirements.
6.How does Aetrix verify that ESDX051-2BU3 is sourced from the original manufacturer or authorized distributors?
All ESDX051-2BU3 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 ESDX051-2BU3 meets industry standards.
7.What is the process for return or replacement of ESDX051-2BU3?
All ESDX051-2BU3 units undergo pre-shipment inspection (PSI). If there is an issue with ESDX051-2BU3, 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 ESDX051-2BU3 part is unused and in its original packaging.
Return procedure for ESDX051-2BU3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDX051-2BU3 Tags
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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