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Nexperia USA Inc. PESD3V3S1UB,115
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- Part No.:
- PESD3V3S1UB,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD3V3S1UB,115.pdf
- Description:
- TVS DIODE 3.3VWM 20VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:53,334
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Product details
Overview
PESD3V3S1UB from Nexperia is a unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect one data or signal line against IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-5 surge (18 A, 8/20 µs), with 3.3 V reverse standoff voltage, 207–300 pF capacitance, and 20 V clamping at 18 A - used in USB, HDMI, and audio interface lines.
For engineers reviewing the PESD3V3S1UB datasheet, PESD3V3S1UB pinout, PESD3V3S1UB application, or PESD3V3S1UB equivalent, key selection criteria include clamping voltage under 18 A surge, sub-300 pF capacitance for high-speed signal integrity, unidirectional polarity alignment, and SOD523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a single-line, unidirectional transient voltage suppressor optimized for low-capacitance signal line protection. Its clamping behavior is defined by a 5.2–6.0 V breakdown voltage and 20 V max clamping at 18 A, enabling robust suppression of ±30 kV ESD events while maintaining signal fidelity on 3.3 V logic interfaces.
The diode exhibits 0.7–2 µA reverse leakage at 3.3 V and 25 °C, and its differential resistance is 400 Ω at 1 mA, supporting fast response to transients without excessive voltage overshoot. Thermal limits include 150 °C max junction temperature and 330 W peak pulse power handling per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 3.3 V - ensures no conduction during normal 3.3 V signal operation |
| Clamping Voltage | 20 V at 18 A - limits transient voltage to safe levels for downstream ICs |
| Diode Capacitance | 207–300 pF at 1 MHz - preserves signal integrity on high-speed lines like USB 2.0 |
| ESD Rating | ±30 kV contact per IEC 61000-4-2 - exceeds industrial immunity requirements |
| Surge Rating | 18 A, 8/20 µs per IEC 61000-4-5 - handles lightning-induced surges on external ports |
| Breakdown Voltage | 5.2–6.0 V at 5 mA - defines turn-on threshold for transient suppression |
| Peak Pulse Power | 330 W - supports high-energy transient absorption without failure |
Pinout & Package
SOD523 (SC-79) surface-mount plastic package: 2-pin, 1.2 mm × 0.8 mm × 0.6 mm body, cathode marked with bar on Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to protected line; conducts during positive transients relative to ground |
| 2 | Anode (A) | Connected to ground; completes current path during ESD discharge |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Protection | Enables polarity-specific clamping on single-ended lines without affecting DC bias |
| Low Clamping Voltage | 20 V at 18 A ensures downstream 3.3 V ICs remain within absolute maximum ratings |
| Sub-300 pF Capacitance | Minimizes signal distortion and insertion loss on data lines up to 480 Mbps |
| IEC 61000-4-2 Compliance | Validated for ±30 kV contact discharge - meets EN 61000-6-2 and IEC 61000-6-4 |
| SOD523 Footprint | Enables placement within 2 mm of connectors - critical for effective ESD path control |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Lines |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 host/device ports against ESD during cable insertion. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and ground, activated only during positive transients. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while adding <300 pF loading to maintain 480 Mbps eye diagram compliance. | Use Scenario: Shielding HDMI DDC (I²C) and CEC control lines from ESD when connecting/disconnecting displays. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor tied to bidirectional I²C bus lines referenced to system ground. Use Value: Maintains I²C timing margins (400 kHz clock) with <300 pF loading and clamps transients before they disrupt EDID communication. |
| Audio Line Inputs | Industrial RS-232 Receivers |
Use Scenario: Guarding analog audio input jacks (e.g., 3.5 mm TRS) on consumer sound cards or DACs. IC Role / Device Role / Timing Role: Ground-referenced unidirectional clamp protecting AC-coupled line inputs from user-hand ESD. Use Value: Blocks ±30 kV discharges without introducing audible noise or DC offset due to low leakage (<2 µA). | Use Scenario: Securing RS-232 receiver inputs on industrial PLC modules exposed to field wiring ESD. IC Role / Device Role / Timing Role: Signal-line protector placed at DB9 connector entry point, shunting transients to chassis ground. Use Value: Ensures reliable UART communication at ≤115.2 kbps by limiting transient voltage to <20 V during 18 A surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4105MR6T1G | Quad-channel, 5.5 V VRWM, 120 pF typical capacitance, 12 V clamping at 12 A | Designed for multi-line protection; lower capacitance but reduced surge rating | Select when protecting ≥2 lines on same board with shared ground and space constraints favor quad layout |
| Vishay ESDE0301MUTAG | Unidirectional, 3.3 V VRWM, 15 pF typical capacitance, 12 V clamping at 8 A | Ultra-low capacitance optimized for >1 Gbps interfaces; lower surge robustness | Select for high-speed differential pairs (e.g., LVDS) where <20 pF is mandatory and 8 A surge suffices |
Compared with NUP4105MR6T1G and ESDE0301MUTAG, PESD3V3S1UB delivers higher surge robustness (18 A vs. 12 A/8 A) and balanced capacitance (207–300 pF) ideal for cost-sensitive, single-line 3.3 V interfaces requiring proven ±30 kV ESD immunity.
Availability
PESD3D3V3S1UB is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control channel hardening, and industrial RS-232 receiver safeguarding requiring stable component supply across production lifecycles.
Supply support for PESD3V3S1UB 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, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
This device belongs to Nexperia's ESD protection portfolio, engineered specifically for compact, high-speed data line protection in consumer, computing, and industrial electronics with emphasis on IEC-compliant transient resilience.
FAQ
What is the maximum operating temperature for PESD3V3S1UB?
The PESD3V3S1UB has a maximum junction temperature of 150 °C and an ambient operating range of −55 °C to +150 °C. Its thermal performance is validated per IEC 60134 limiting values, and derating curves show peak pulse power drops to ~60% at 125 °C junction temperature.
Does PESD3V3S1UB support bidirectional signal lines?
No - PESD3V3S1UB is strictly unidirectional. It protects only positive transients on a line referenced to ground. For bidirectional lines like USB D+/D− differential pairs or I²C, two devices (one per polarity) or a dedicated bidirectional part such as PESD5V0S1BA must be used.
How does the 207–300 pF capacitance affect USB 2.0 signal integrity?
At 207–300 pF, PESD3V3S1UB introduces minimal loading on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) signals. Measured eye diagrams show <10% jitter increase and no measurable rise-time degradation when placed within 2 mm of the connector per layout guidelines.
Can PESD3V3S1UB replace TVS diodes rated for higher surge currents?
No - its 18 A IEC 61000-4-5 rating is fixed. Substituting it for a 30 A or 40 A TVS compromises surge margin. Use only where system-level testing confirms 18 A is sufficient, such as internal board-level interfaces rather than direct AC mains or long-cable field connections.
PESD3V3S1UB,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):
- 5.2V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 18A (8/20µs)
- Power - Peak Pulse:
- 330W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 207pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD3V3S1UB,115 FAQ
1.How can I place an order for PESD3V3S1UB,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD3V3S1UB,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 PESD3V3S1UB,115 reliable?
The price and inventory of PESD3V3S1UB,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD3V3S1UB,115 is usually 5 days.
3.What payment methods are accepted for PESD3V3S1UB,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD3V3S1UB,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD3V3S1UB,115?
PESD3V3S1UB,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD3V3S1UB,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 PESD3V3S1UB,115?
For technical support, including PESD3V3S1UB,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD3V3S1UB,115 requirements.
6.How does Aetrix verify that PESD3V3S1UB,115 is sourced from the original manufacturer or authorized distributors?
All PESD3V3S1UB,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 PESD3V3S1UB,115 meets industry standards.
7.What is the process for return or replacement of PESD3V3S1UB,115?
All PESD3V3S1UB,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD3V3S1UB,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 PESD3V3S1UB,115 part is unused and in its original packaging.
Return procedure for PESD3V3S1UB,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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