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Nexperia USA Inc. PESD15VS1UB-QX
- Part No.:
- PESD15VS1UB-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD15VS1UB-QX.pdf
- Description:
- PESD15VS1UB-Q/SOD523/SC-79
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
PESD15VS1UB-QX from Nexperia is a unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect single data lines against IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-5 surge (5 A, 8/20 µs), and transients. It features 15 V reverse standoff voltage, 40 V clamping at 5 A, and 32 pF typical capacitance - ideal for CAN bus and high-speed signal line protection in automotive ECUs.
For engineers reviewing the PESD15VS1UB-QX datasheet, PESD15VS1UB-QX pinout, PESD15VS1UB-QX application, or PESD15VS1UB-QX equivalent, key selection criteria include clamping performance under 5 A surge, low 32 pF capacitance for minimal signal distortion, AEC-Q101 qualification for automotive deployment, and SOD523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional transient voltage suppressor, conducting only when the protected line exceeds +17.6 V (typical breakdown) relative to ground. Its low 225 Ω differential resistance ensures rapid response and stable clamping during fast-rising ESD events (0.6–1 ns rise time).
The SOD523 package enables integration on high-density boards while maintaining thermal capability up to 150 °C junction temperature. Its 1.2 mm × 0.8 mm footprint supports routing of protected lines directly through the device with minimal trace inductance - critical for preserving clamping efficacy per IEC 61000-4-2 test setup requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 15 V - Maximum continuous DC voltage the line can carry without triggering conduction. |
| Clamping Voltage | 40 V at 5 A (8/20 µs) - Peak voltage seen by protected IC during worst-case surge, limiting stress on downstream components. |
| Diode Capacitance | 32 pF (typ) at 1 MHz, 0 V - Low enough to avoid signal integrity degradation on CAN or USB 2.0 lines. |
| ESD Withstand | ±30 kV (IEC 61000-4-2 contact discharge) - Meets automotive and industrial immunity requirements without external shielding. |
| Peak Pulse Power | 160 W (8/20 µs) - Sustains transient energy without failure during repetitive surge events. |
| Breakdown Voltage | 18 V (typ) at 5 mA - Ensures reliable turn-on margin above 15 V operating rail while avoiding false triggering. |
| Junction Temperature | 150 °C max - Supports operation in under-hood automotive environments with no derating up to ambient 125 °C. |
Pinout & Package
Package: SOD523 (SC-79), plastic surface-mount, 2-pin, 1.2 mm × 0.8 mm × 0.6 mm body. Marking bar denotes Pin 1 (cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected signal line; conducts transient current toward ground when line voltage exceeds breakdown threshold. |
| 2 (A) | Anode | Connected to system ground; completes low-inductance return path essential for effective ESD suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Protection | Protects positive-polarity signal lines (e.g., CAN_H) without interfering with normal DC bias or low-frequency operation. |
| AEC-Q101 Qualified | Validated for automotive use including temperature cycling, HTRB, and ESD stress - eliminates need for additional qualification testing. |
| Low Clamping Voltage | 40 V at 5 A ensures downstream transceivers (e.g., TJA1042) remain within absolute maximum ratings during surge events. |
| 32 pF Typical Capacitance | Minimizes insertion loss and timing skew on 1 Mbps CAN buses and other medium-speed digital interfaces. |
| SOD523 Footprint | Enables placement within 2 mm of I/O connector - meeting layout best practices for ESD protection effectiveness per IEC 61000-4-2. |
Applications
| Automotive CAN Bus Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in engine control units exposed to ISO 10605 and IEC 61000-4-2 ESD events. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between CAN transceiver I/O and connector, shunting ESD current to chassis ground. Use Value: Maintains 15 V DC common-mode range while clamping ±30 kV ESD pulses to ≤40 V, preventing transceiver latch-up or damage. |
Use Scenario: Shielding D+ and D− lines in automotive infotainment USB ports from user-handling ESD. IC Role / Device Role / Timing Role: Single-line protector deployed per signal line, leveraging low 32 pF capacitance to preserve signal edge integrity at 480 Mbps. Use Value: Enables full-speed USB compliance without added series resistance or equalization, reducing BOM count versus dual-capacitor TVS solutions. |
| Industrial Sensor Interface Protection | Audio Line Input Protection |
Use Scenario: Safeguarding analog sensor outputs (e.g., 4–20 mA loop receivers) in factory automation systems subject to cable discharge events. IC Role / Device Role / Timing Role: High-impedance standby protector that activates only during >17.6 V transients, avoiding loading of precision 24 V supply rails. Use Value: 1 nA typical leakage at 15 V ensures <0.1 µA error contribution in µA-level current-loop measurements. |
Use Scenario: Preventing pop/noise and amplifier damage on line-in jacks of automotive head units during hot-plug or static discharge. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional diode used with ground-referenced input, clamping both positive and negative excursions via circuit topology. Use Value: 40 V clamping limits amplifier input stage overvoltage to safe levels while 32 pF avoids high-frequency roll-off in 20 kHz audio band. |
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 | Higher 65 pF capacitance; 12 V standoff; bidirectional configuration | Better suited for symmetric signal lines (e.g., USB D+/D− together), less optimal for CAN_H-only protection | Select when protecting balanced differential pairs where polarity reversal is possible |
| Vishay ESDBLE5.0D1W | Lower 5 V standoff; 12 pF capacitance; AEC-Q101 qualified | Designed for 3.3 V logic lines (e.g., I²C, GPIO), not 12–24 V automotive buses | Choose for low-voltage microcontroller I/O protection where 15 V standoff is excessive |
Compared with NUP4105MR6T1G and ESDBLE5.0D1W, PESD15VS1UB-QX uniquely balances 15 V standoff, 40 V clamping, and 32 pF capacitance for 12–24 V unidirectional data lines - making it the optimal fit for CAN, LIN, and industrial RS-485 node protection where voltage margin and signal fidelity are co-constrained.
Availability
PESD15VS1UB-QX is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and USB peripheral protection requiring stable component supply across extended product lifecycles.
Supply support for PESD15VS1UB-QX 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 Automotive-qualified ESD Protection Diode portfolio, engineered specifically for robust transient suppression in harsh automotive and industrial signal environments.
FAQ
Is PESD15VS1UB-QX suitable for bidirectional signal lines like USB D+ and D−?
No - it is unidirectional and optimized for single-polarity lines such as CAN_H. For true bidirectional protection, two devices must be used back-to-back, or a dedicated bidirectional part like PESD5V0S1BA should be selected. Its 15 V standoff and cathode-anode asymmetry make it unsuitable for AC-coupled or differential signals without careful circuit adaptation.
What is the maximum recommended PCB trace length between PESD15VS1UB-QX and the protected connector?
Trace length should not exceed 2 mm from device cathode to connector pin, and ground path inductance must be minimized using multiple vias to inner ground planes. Longer traces increase inductive voltage overshoot during ESD events, degrading clamping performance - this requirement is validated per IEC 61000-4-2 test setup guidelines in the datasheet.
Does PESD15VS1UB-QX require external series impedance for optimal ESD protection?
No external resistor is required for basic ESD clamping. However, a small series resistor (e.g., 0–10 Ω) may be added between the diode and protected IC to limit peak current and reduce ringing - especially in high-speed lines. The diode's 225 Ω differential resistance provides inherent current limiting during clamping.
How does PESD15VS1UB-QX perform at elevated ambient temperatures?
Reverse leakage remains below 50 nA up to 85 °C and below 10 nA at 150 °C; clamping voltage increases only marginally (<5 %) across -55 °C to +150 °C. Peak pulse power derates linearly above 25 °C per Fig. 4 in the datasheet, retaining 70 % of 160 W rating at 125 °C junction temperature.
PESD15VS1UB-QX 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):
- 15V (Max)
- Voltage - Breakdown (Min):
- 17.6V
- Voltage - Clamping (Max) @ Ipp:
- 40V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 160W
- Power Line Protection:
- No
- Applications:
- CAN, Telecom
- Capacitance @ Frequency:
- 32pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD15VS1UB-QX FAQ
1.How can I place an order for PESD15VS1UB-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD15VS1UB-QX 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 PESD15VS1UB-QX reliable?
The price and inventory of PESD15VS1UB-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD15VS1UB-QX is usually 5 days.
3.What payment methods are accepted for PESD15VS1UB-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD15VS1UB-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD15VS1UB-QX?
PESD15VS1UB-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD15VS1UB-QX 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 PESD15VS1UB-QX?
For technical support, including PESD15VS1UB-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD15VS1UB-QX requirements.
6.How does Aetrix verify that PESD15VS1UB-QX is sourced from the original manufacturer or authorized distributors?
All PESD15VS1UB-QX 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 PESD15VS1UB-QX meets industry standards.
7.What is the process for return or replacement of PESD15VS1UB-QX?
All PESD15VS1UB-QX units undergo pre-shipment inspection (PSI). If there is an issue with PESD15VS1UB-QX, 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 PESD15VS1UB-QX part is unused and in its original packaging.
Return procedure for PESD15VS1UB-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD15VS1UB-QX Tags
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Diodes Incorporated
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Nexperia USA Inc.
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