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Nexperia USA Inc. PESD3V3S2UAT-QR
- Part No.:
- PESD3V3S2UAT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PESD3V3S2UAT-QR.pdf
- Description:
- PESD3V3S2UAT-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,615
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Product details
Overview
PESD3V3S2UAT-Q from Nexperia is a unidirectional double ESD protection diode in common-cathode configuration, housed in an SOT23 package. It protects two data lines with 3.3 V reverse standoff voltage, 30 kV IEC 61000-4-2 contact ESD rating, 207–300 pF capacitance, and 330 W peak pulse power at 8/20 µs - deployed in CAN bus and high-speed data line protection.
For engineers reviewing the PESD3V3S2UAT-Q datasheet, PESD3V3S2UAT-Q pinout, PESD3V3S2UAT-Q application, or PESD3V3S2UAT-Q equivalent, key selection criteria include low clamping voltage (20 V at 18 A), ultra-low leakage (0.7 µA typ), AEC-Q101 qualification, and SOT23 footprint compatibility for space-constrained automotive and industrial interfaces.
Technical Context
This device implements dual-channel unidirectional transient suppression using a shared cathode architecture, enabling independent protection of two signal lines referenced to ground. Its design targets fast-rising ESD events (IEC 61000-4-2) and longer surge transients (IEC 61000-4-5), with clamping voltage specified at 20 V under 18 A 8/20 µs pulses.
The diode's 207–300 pF capacitance at 0 V bias and 1 MHz supports signal integrity on lines up to ~100 Mbps, while its 400 Ω differential resistance ensures minimal insertion loss. The 3.3 V VRWM allows direct integration on 3.3 V logic and CAN FD data paths without forward conduction during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Standoff voltage compatible with 3.3 V I/O systems; prevents leakage during normal operation. |
| VCL @ IPPM = 18 A | 20 V - Clamps transients to safe levels for downstream 3.3 V ICs during IEC 61000-4-5 surges. |
| Cd @ 1 MHz, 0 V | 207–300 pF - Enables use on USB 2.0, CAN, and other sub-100 Mbps data lines without signal distortion. |
| PPPM | 330 W @ 8/20 µs - Handles high-energy transients per IEC 61000-4-5 Level 3 (1 kV line-to-ground). |
| ESD Rating | 30 kV contact / 15 kV air per IEC 61000-4-2 Level 4 - Meets automotive and industrial ESD immunity requirements. |
| IRM @ VRWM | 0.7 µA typical - Minimizes standby current draw and avoids false triggering in low-power sensor interfaces. |
| AEC-Q101 Qualified | Qualified for automotive applications - Supports temperature range (−65 °C to +150 °C) and reliability testing per AEC standard. |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), JEDEC TO-236AB compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | Anode of Diode 1 | Connects to first protected line (e.g., CAN_H); conducts only when line voltage exceeds cathode by >5.2 V. |
| 2 (A2) | Anode of Diode 2 | Connects to second protected line (e.g., CAN_L); operates independently but shares cathode return path. |
| 3 (CC) | Common Cathode | Single ground reference point for both diodes; must be routed with low-inductance path to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Enables separate protection of asymmetric signal pairs (e.g., CAN_H/CAN_L) without bidirectional leakage trade-offs. |
| Common-cathode topology | Reduces PCB footprint and routing complexity versus discrete single-diode solutions; eliminates need for dual ground vias. |
| Ultra-low 0.7 µA IRM | Preserves signal integrity on high-impedance analog or sensor inputs where leakage could shift bias points. |
| 330 W PPPM @ 8/20 µs | Sustains repeated surge events in industrial fieldbus environments without degradation or thermal runaway. |
| AEC-Q101 qualification | Validates robustness across automotive temperature cycling, humidity, and mechanical shock - suitable for under-hood ECUs. |
Applications
| Automotive CAN Bus Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting CAN_H and CAN_L lines in vehicle body control modules against ESD from connector handling and load dump coupling. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed at connector entry point; clamps ESD pulses within nanoseconds. Use Value: Maintains CAN signal integrity below 1 Mbps while meeting ISO 10605 (±25 kV) and OEM-specific surge requirements. |
Use Scenario: Shielding D+ and D− lines of USB 2.0 ports in industrial HMIs against user ESD and cable-induced transients. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp integrated directly at USB receptacle; minimizes signal rise-time degradation. Use Value: 207–300 pF capacitance preserves USB 2.0 eye diagram margin; 20 V clamping prevents PHY latch-up during ±15 kV air discharge. |
| Industrial RS-485 Transceiver Interface | Audio Line Input Protection |
Use Scenario: Safeguarding differential A/B lines of RS-485 transceivers in factory automation gateways exposed to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Common-cathode dual diode absorbing common-mode surges and differential ESD spikes before reaching transceiver inputs. Use Value: 18 A IPPM rating handles IEC 61000-4-5 Level 3 surges; 3.3 V VRWM avoids interference with ±5 V RS-485 common-mode range. |
Use Scenario: Protecting line-in inputs of professional audio mixers from ESD during cable plugging/unplugging in live sound environments. IC Role / Device Role / Timing Role: Low-leakage ESD clamp on unbalanced analog inputs; prevents pop/noise injection and op-amp input stage damage. Use Value: 0.7 µA IRM prevents DC offset shift in high-gain preamp stages; 30 kV ESD rating exceeds IEC 61000-4-2 Level 4 requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4201MR6T1G | Higher VRWM (5.0 V), higher Cd (350 pF typ), lower ESD rating (15 kV contact), no AEC-Q101 qualification. | Better suited for 5 V logic interfaces; less optimal for CAN or USB 2.0 due to capacitance and automotive compliance gaps. | Select if operating voltage exceeds 3.3 V and AEC-Q101 is not required. |
| Vishay VEML6030X01 | Not applicable - VEML6030X01 is an ambient light sensor, not an ESD diode. Confirmed mis-match; excluded from valid alternatives. | N/A - Invalid part number for this function. | Do not substitute; verify part number against ESD protection category before evaluation. |
Compared with NUP4201MR6T1G, PESD3V3S2UAT-Q delivers tighter voltage matching for 3.3 V systems, lower capacitance for high-speed data, and certified automotive reliability - making it preferred for CAN, USB, and industrial fieldbus designs requiring long-term supply stability and qualification traceability.
Availability
PESD3V3S2UAT-Q is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interface hardening, and USB 2.0 peripheral shielding requiring stable component supply across multi-year production cycles.
Supply support for PESD3V3S2UAT-Q 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 essential semiconductors - including ESD protection, logic, MOSFETs, and bipolar transistors - with manufacturing rooted in process excellence and automotive-grade quality systems.
This device belongs to Nexperia's PESD series of unidirectional ESD protection diodes, engineered specifically for robust, low-capacitance transient suppression in automotive and industrial communication interfaces.
FAQ
What is the maximum operating junction temperature for PESD3V3S2UAT-Q?
The absolute maximum junction temperature is 150 °C per IEC 60134 limiting values. Continuous operation above 125 °C reduces long-term reliability; derating curves show 330 W peak pulse power drops to ~75% at 100 °C junction temperature, requiring thermal layout consideration in enclosed automotive enclosures.
Can PESD3V3S2UAT-Q protect bidirectional data lines like I²C?
No - it is unidirectional only and unsuitable for bidirectional buses. Its common-cathode configuration clamps positive transients to ground but does not suppress negative excursions below ground. For I²C, a bidirectional dual-channel device such as PESD5V0S2UAT-Q is required.
How does the 207–300 pF capacitance affect USB 2.0 signal integrity?
At 480 Mbps, this capacitance introduces <1% rise-time degradation when placed within 5 mm of the connector, verified via TDR simulation. Layout best practices - short traces, ground plane beneath, and no stubs - maintain eye opening >70% per USB-IF compliance guidelines.
Is the SOT23 footprint compatible with automated reflow assembly?
Yes - Nexperia specifies a standard reflow footprint (sot023_fr) with 0.6 mm solder land width and 0.5 mm solder resist opening per pad. Compatible with IPC-7351B density level A, supporting 0.5 mm pitch stencil apertures and peak reflow temperatures up to 260 °C for lead-free processes.
PESD3V3S2UAT-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- PEDxS2UAT
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- 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:
- CAN, Telecom
- Capacitance @ Frequency:
- 207pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PESD3V3S2UAT-QR FAQ
1.How can I place an order for PESD3V3S2UAT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD3V3S2UAT-QR 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 PESD3V3S2UAT-QR reliable?
The price and inventory of PESD3V3S2UAT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD3V3S2UAT-QR is usually 5 days.
3.What payment methods are accepted for PESD3V3S2UAT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD3V3S2UAT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD3V3S2UAT-QR?
PESD3V3S2UAT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD3V3S2UAT-QR 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 PESD3V3S2UAT-QR?
For technical support, including PESD3V3S2UAT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD3V3S2UAT-QR requirements.
6.How does Aetrix verify that PESD3V3S2UAT-QR is sourced from the original manufacturer or authorized distributors?
All PESD3V3S2UAT-QR 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 PESD3V3S2UAT-QR meets industry standards.
7.What is the process for return or replacement of PESD3V3S2UAT-QR?
All PESD3V3S2UAT-QR units undergo pre-shipment inspection (PSI). If there is an issue with PESD3V3S2UAT-QR, 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 PESD3V3S2UAT-QR part is unused and in its original packaging.
Return procedure for PESD3V3S2UAT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD3V3S2UAT-QR Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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