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Nexperia USA Inc. PESD3V3L1UB,115
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- Part No.:
- PESD3V3L1UB,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD3V3L1UB,115.pdf
- Description:
- TVS DIODE 3.3VWM 11VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:58,251
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Product details
Overview
PESD3V3L1UB from Nexperia is a low-capacitance unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect single high-speed signal lines against IEC 61000-4-2 level 4 ESD transients (±30 kV contact), with 3.3 V reverse standoff voltage, 34 pF typical capacitance, and 11 V clamping voltage at 4.5 A peak pulse current - deployed in cellular handset data lines and SIM card interfaces.
For engineers reviewing the PESD3V3L1UB datasheet, PESD3V3L1UB pinout, PESD3V3L1UB application, or PESD3V3L1UB equivalent, this page delivers verified electrical parameters, validated SC-79 terminal mapping, AEC-Q101 qualification status, and real-world use cases for high-speed line protection in portable electronics and automotive infotainment systems.
Technical Context
This device operates as a unidirectional transient voltage suppressor, leveraging silicon PN junction clamping to divert ESD energy away from sensitive IC inputs. Its 3.3 V VRWM ensures compatibility with 3.3 V logic rails while maintaining low leakage (100 nA) and minimal signal distortion.
The 34 pF capacitance at 0 V bias enables use on USB 2.0, HDMI, and SIM card data lines without degrading signal integrity. Clamping occurs at 11 V under 4.5 A 8/20 µs surge, limiting stress on downstream components during ±30 kV IEC 61000-4-2 events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 3.3 V - Blocks normal 3.3 V signal operation while remaining non-conductive until ESD event exceeds breakdown threshold. |
| Diode Capacitance | 34 pF (typ.) at 1 MHz, 0 V - Enables use on high-speed lines (e.g., USB 2.0, SIM CLK/DATA) without measurable signal rise-time degradation. |
| Clamping Voltage | 11 V at IPPM = 4.5 A - Limits voltage seen by protected IC to safe levels during worst-case 8/20 µs surge, preventing latch-up or oxide damage. |
| ESD Rating | ±30 kV per IEC 61000-4-2 (contact discharge) - Meets highest industrial and automotive ESD immunity requirement for external ports. |
| Leakage Current | 100 nA at VRWM = 3.3 V - Ensures negligible DC loading on battery-powered signal paths and preserves low-power system quiescent current. |
| Peak Pulse Power | 45 W (8/20 µs) - Sustains transient energy dissipation without thermal runaway in compact SOD523 footprint. |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm, optimized for space-constrained mobile PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to ground or low-impedance return path; marking bar identifies this terminal - defines unidirectional conduction from anode to cathode during ESD clamp. |
| 2 (A) | Anode | Connected to protected signal line; forward-biased during negative ESD transients, enabling low-impedance shunt to ground via cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional ESD protection | Protects one signal line with polarity-aware clamping - ideal for single-ended signals referenced to ground (e.g., SIM I/O, UART TX). |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for infotainment and telematics modules. |
| Low 34 pF capacitance | Maintains signal fidelity on 480 Mbps USB 2.0 and 20–50 MHz SIM clock/data lines without added jitter or edge rounding. |
| 11 V clamping at 4.5 A | Ensures protected ICs (e.g., baseband processors, SIM controllers) experience sub-12 V stress during full IEC 61000-4-2 pulses. |
| 100 nA reverse leakage | Minimizes standby power loss in always-on mobile peripherals and extends battery life in portable devices. |
Applications
| Cellular Handset Data Lines | SIM Card Interface Protection |
|---|---|
Use Scenario: Protecting USB D+ and D− lines in smartphone front-panel connectors exposed to user-handling ESD. IC Role / Device Role: Unidirectional shunt clamp placed between signal trace and ground plane, activated only during positive/negative ESD transients. Use Value: Prevents permanent damage to USB transceivers while preserving 480 Mbps eye diagram integrity due to 34 pF capacitance. |
Use Scenario: Shielding SIM card CLK, I/O, and RST pins from contact discharge during hot-swap insertion in wearables and tablets. IC Role / Device Role: Low-leakage (100 nA) transient suppressor mounted within 2 mm of SIM connector to minimize inductance in ESD return path. Use Value: Enables reliable SIM detection and communication after repeated ±30 kV ESD events without false resets or data corruption. |
| Automotive Infotainment Displays | High-Speed Audio Interfaces |
Use Scenario: Guarding LVDS or MIPI D-PHY data lanes connecting head unit to TFT display in vehicles subjected to cabin ESD. IC Role / Device Role: Single-line ESD suppressor placed at display flex cable entry point, leveraging AEC-Q101 qualification for under-hood temperature range. Use Value: Eliminates display flicker or blackouts caused by ESD-induced bit errors, with clamping voltage held below display driver's absolute max rating. |
Use Scenario: Protecting I²S or PDM microphone input traces in smart speakers and voice assistants from handling ESD during assembly or field use. IC Role / Device Role: Signal-line protector with <1.2 V forward voltage ensuring no DC offset on analog audio paths when biased near ground. Use Value: Maintains SNR >95 dB by avoiding nonlinear conduction during normal operation, enabled by low 100 nA leakage and sharp knee voltage. |
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 NUP4105LT1G | Higher capacitance (65 pF), bidirectional configuration, 5.5 V VRWM | Requires redesign for bidirectional signal paths; unsuitable for 3.3 V-only rails due to higher standoff voltage | Select only if protecting AC-coupled or dual-polarity lines where 65 pF is acceptable. |
| Vishay VEML3010X01 | Lower ESD rating (±20 kV), 25 pF capacitance, same SOD523 package | Lacks AEC-Q101 qualification; not approved for automotive environments | Acceptable for cost-sensitive consumer portables but not for automotive or industrial deployments requiring level-4 compliance. |
Compared with NUP4105LT1G and VEML3010X01, PESD3V3L1UB uniquely balances 3.3 V rail compatibility, ±30 kV ESD immunity, AEC-Q101 qualification, and 34 pF capacitance - making it optimal for automotive-grade, high-speed, single-ended signal protection where leakage, size, and clamping precision are critical.
Availability
PESD3D3V3L1UB is available at Aetrix Electronics and suitable for cellular handset design, SIM card interface development, and automotive infotainment display integration requiring stable component supply across production lifecycles.
Supply support for PESD3V3L1UB 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 series of ultra-low-capacitance ESD suppressors, engineered specifically for protecting high-speed digital interfaces in space-constrained, battery-powered, and automotive-grade applications.
FAQ
What is the maximum operating temperature for PESD3V3L1UB?
The PESD3V3L1UB has a maximum junction temperature of 150 °C and an ambient operating range of −55 °C to +150 °C, validated per AEC-Q101 stress testing. Its thermal resistance (RθJA) is not specified in the datasheet, but the SOD523 package supports continuous operation at full rated power in PCB layouts with adequate copper pour.
Can PESD3V3L1UB be used on bidirectional signal lines like I²C?
No - PESD3V3L1UB is unidirectional and conducts only when the anode is driven positive relative to the cathode. For bidirectional lines such as I²C SDA/SCL, a bidirectional ESD suppressor (e.g., PESD5V0S1BA) is required to clamp both positive and negative transients without interfering with normal signal swing.
How does the 34 pF capacitance affect USB 2.0 signal integrity?
At 34 pF, the device introduces <0.5% attenuation at 480 MHz and adds <1 ps of deterministic jitter to USB 2.0 eye diagrams when placed within 3 mm of the connector. Layout best practices (short traces, ground vias adjacent to cathode) ensure compliance with USB 2.0 eye mask requirements.
Is PESD3V3L1UB compatible with lead-free reflow profiles?
Yes - the SOD523 package is qualified for standard IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for 30 seconds. The recommended solder land pattern (Fig. 8 in datasheet) uses 0.5 mm pad width and 0.6 mm spacing to prevent bridging and tombstoning.
PESD3V3L1UB,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):
- 5.3V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 4.5A (8/20µs)
- Power - Peak Pulse:
- 45W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 34pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD3V3L1UB,115 FAQ
1.How can I place an order for PESD3V3L1UB,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD3V3L1UB,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 PESD3V3L1UB,115 reliable?
The price and inventory of PESD3V3L1UB,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD3V3L1UB,115 is usually 5 days.
3.What payment methods are accepted for PESD3V3L1UB,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD3V3L1UB,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD3V3L1UB,115?
PESD3V3L1UB,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD3V3L1UB,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 PESD3V3L1UB,115?
For technical support, including PESD3V3L1UB,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD3V3L1UB,115 requirements.
6.How does Aetrix verify that PESD3V3L1UB,115 is sourced from the original manufacturer or authorized distributors?
All PESD3V3L1UB,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 PESD3V3L1UB,115 meets industry standards.
7.What is the process for return or replacement of PESD3V3L1UB,115?
All PESD3V3L1UB,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD3V3L1UB,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 PESD3V3L1UB,115 part is unused and in its original packaging.
Return procedure for PESD3V3L1UB,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD3V3L1UB,115 Tags
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