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Nexperia USA Inc. PESD3V3U1UB,115
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- Part No.:
- PESD3V3U1UB,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD3V3U1UB,115.pdf
- Description:
- TVS DIODE 3.3VWM SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:19,461
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Product details
Overview
PESD3V3U1UB from Nexperia is a unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect single high-speed signal lines with 3.3 V reverse standoff voltage, 2.6 pF typical capacitance, 9 kV IEC 61000-4-2 contact discharge rating, and 1 nA reverse leakage at 3 V - deployed in USB 2.0, SIM card, and 10/100/1000 Mbit/s Ethernet interfaces.
For engineers reviewing the PESD3V3U1UB datasheet, PESD3V3U1UB pinout, PESD3V3U1UB application, or PESD3V3U1UB equivalent, this page delivers verified electrical parameters, validated AEC-Q101 qualification status, exact SC-79 pin mapping, and real-world use cases for high-speed data line protection where sub-3 pF capacitance and low clamping voltage are critical.
Technical Context
This device operates as a unidirectional clamping diode, conducting only when the anode exceeds cathode voltage by ≥4.5 V (typical breakdown), enabling robust transient suppression on positive-polarity signal lines while maintaining <1 nA leakage below 3.3 V standoff. Its ultra-low 2.6 pF capacitance minimizes signal integrity impact on lines up to 1 Gbps.
The SOD523 package integrates a single PN junction optimized for fast response (<1 ns rise time per IEC 61000-4-2), with thermal limits supporting 150 °C junction operation and AEC-Q101 qualification confirming suitability for automotive infotainment and telematics signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 3.3 V - Maximum continuous working voltage before conduction begins; defines safe operating range for 3.3 V logic interfaces. |
| Diode Capacitance (Cd) | 2.6 pF (typ) at 1 MHz, 0 V - Enables minimal signal distortion on USB 2.0 and Gigabit Ethernet differential pairs. |
| ESD Withstand (IEC 61000-4-2) | ±9 kV contact discharge - Meets Level 4 immunity for handheld and portable equipment per IEC standard. |
| Reverse Leakage (IRM) | 1 nA at VRWM = 3 V - Ensures negligible DC loading on sensitive analog or reference signal paths. |
| Breakdown Voltage (VBR) | 5.6 V (typ) at 5 mA - Determines clamping threshold during ESD events; lower than competing 5.8–6.5 V devices for tighter protection margin. |
| Differential Resistance (Rdiff) | 100 Ω (max) - Limits peak clamped voltage under high-current transients (e.g., 8/20 µs surges). |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm with 2 leads and visible cathode band marking (T8 code).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to system ground or protected line return path; carries transient current during negative ESD events. |
| 2 | Anode (A) | Connected to signal line under protection; conducts when line voltage exceeds cathode by ≥4.5 V (breakdown). |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects only positive-going transients on one line, eliminating false triggering on bidirectional buses like I²C. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - suitable for infotainment and ADAS sensor interfaces. |
| 2.6 pF capacitance at 1 MHz | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 1.25 Gbps Ethernet PHY lanes without measurable jitter penalty. |
| 9 kV IEC 61000-4-2 contact discharge | Exceeds industrial and consumer ESD immunity requirements without requiring external RC filtering or layout compromises. |
Applications
| USB 2.0 Data Lines | SIM Card Interfaces |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 connectors against user-handling ESD in smartphones and docking stations. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed directly at connector footprint to shunt transients before reaching USB transceiver IC. Use Value: 2.6 pF capacitance avoids signal integrity degradation at 480 Mbps; 3.3 V VRWM matches USB 2.0 VBUS-referenced signaling levels. |
Use Scenario: Shielding SIM card slot data (I/O), clock (CLK), and reset (RST) lines from electrostatic discharge during hot-swap insertion. IC Role / Device Role / Timing Role: Single-line ESD suppressor mounted adjacent to SIM connector, grounded to shield plane with minimal trace length. Use Value: 1 nA leakage prevents battery drain in always-on mobile standby mode; AEC-Q101 ensures reliability across thermal cycles in automotive telematics units. |
| 10/100/1000 Mbit/s Ethernet PHY | Audio Line Inputs (3.5 mm Jack) |
Use Scenario: Safeguarding differential TX/RX pairs in Gigabit Ethernet PHYs against ESD coupling through RJ-45 magnetics or chassis leakage. IC Role / Device Role / Timing Role: One PESD3V3U1UB per line (e.g., TX+, TX−, RX+, RX−), routed with matched lengths and ground vias beneath pads. Use Value: Sub-3 pF capacitance maintains impedance continuity and eye diagram integrity at 1.25 Gbps; 9 kV rating covers factory handling and field service events. |
Use Scenario: Protecting line-in and microphone inputs on portable audio devices from ESD via 3.5 mm TRRS jacks during cable insertion/removal. IC Role / Device Role / Timing Role: Anode tied to input signal path, cathode grounded; placed within 2 mm of jack solder pad to minimize inductance. Use Value: Low 3.3 V standoff avoids clipping of ±1.5 V audio signals; 1 nA leakage eliminates DC offset drift in high-gain preamp stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD3V3U1U-2/TR | Same SOD523 package, identical 3.3 V VRWM and 2.6 pF Cd, but rated for 12 kV IEC 61000-4-2 contact discharge. | Higher ESD rating suits industrial test equipment and medical devices requiring extended immunity margins. | Select when >9 kV ESD margin is mandated; verify layout supports higher clamping energy without thermal derating. |
| TPD3E001DPYR | 3-channel array in X2SON-4 package; individual channel Cd = 1.5 pF, VRWM = 3.6 V, not AEC-Q101 qualified. | Reduces PCB area for multi-line protection but lacks automotive qualification and has higher VRWM. | Prefer for space-constrained consumer electronics with non-automotive requirements; avoid where AEC-Q101 or strict 3.3 V matching is mandatory. |
Compared with ES3V3U1U-2/TR, PESD3V3U1UB offers tighter 3.3 V standoff alignment for 3.3 V systems and lower cost per channel; versus TPD3E001DPYR, it provides automotive qualification and proven single-line layout simplicity at the expense of integration density.
Availability
PESD3V3U1UB is available at Aetrix Electronics and suitable for USB 2.0 interface protection, SIM card slot safeguarding, and Gigabit Ethernet PHY line shielding requiring stable component supply, consistent lead-time performance, and full traceability.
Supply support for PESD3V3U1UB 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in ESD protection, MOSFETs, and bipolar transistors.
This device belongs to Nexperia's PESD ultra-low-capacitance ESD protection portfolio, engineered specifically for high-speed digital interfaces where signal fidelity and compact form factor are critical design constraints.
FAQ
What is the maximum clamping voltage of PESD3V3U1UB during an 8 kV ESD event?
The clamping voltage is not explicitly specified as a single value in the datasheet, but Figure 5 shows clamped +8 kV and −8 kV waveforms across pins 1–2, indicating effective suppression below 12 V for 8/20 µs transients at peak currents up to ~12 A. Actual clamping depends on PCB layout inductance and test setup compliance with IEC 61000-4-2.
Can PESD3V3U1UB be used on bidirectional data lines like I²C?
No - PESD3V3U1UB is unidirectional and only protects against positive transients on the anode relative to cathode. For bidirectional lines such as I²C SDA/SCL, a bidirectional ESD diode like PESD5V0U1BB must be used to clamp both polarities without interfering with signal swing.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for ≤30 seconds. Figure 8 provides the recommended solder land pattern (1.4 mm × 0.5 mm pads with 0.4 mm spacing), and thermal resistance data confirms safe operation under JEDEC-defined thermal cycling conditions.
How does AEC-Q101 qualification impact usage in non-automotive applications?
AEC-Q101 qualification certifies robustness across extended temperature ranges (−55 °C to +150 °C), mechanical shock/vibration, and accelerated lifetime testing - providing higher confidence in long-term reliability for industrial, medical, and telecom equipment even when automotive use is not required.
PESD3V3U1UB,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 2.6pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD3V3U1UB,115 FAQ
1.How can I place an order for PESD3V3U1UB,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD3V3U1UB,115 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 PESD3V3U1UB,115 reliable?
The price and inventory of PESD3V3U1UB,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD3V3U1UB,115 is usually 5 days.
3.What payment methods are accepted for PESD3V3U1UB,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD3V3U1UB,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD3V3U1UB,115?
PESD3V3U1UB,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD3V3U1UB,115 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 PESD3V3U1UB,115?
For technical support, including PESD3V3U1UB,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD3V3U1UB,115 requirements.
6.How does Aetrix verify that PESD3V3U1UB,115 is sourced from the original manufacturer or authorized distributors?
All PESD3V3U1UB,115 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 PESD3V3U1UB,115 meets industry standards.
7.What is the process for return or replacement of PESD3V3U1UB,115?
All PESD3V3U1UB,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD3V3U1UB,115, 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 PESD3V3U1UB,115 part is unused and in its original packaging.
Return procedure for PESD3V3U1UB,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD3V3U1UB,115 Tags
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