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Nexperia USA Inc. PESD12VS2UQ/S911
- Part No.:
- PESD12VS2UQ/S911
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD12VS2UQ/S911.pdf
- Description:
- TVS DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:258,384
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Product details
Overview
PESD12VS2UQ/S911 from Nexperia is a unidirectional double ESD protection diode in SOT663 package, designed to protect two signal lines against IEC 61000-4-2 level 4 ESD (30 kV contact), with 12 V reverse standoff voltage, 38–100 pF capacitance at 1 MHz, and clamping voltage of 19 V at 1 A and 35 V at 5 A. It serves in high-speed data line protection for industrial communication interfaces.
For engineers reviewing the PESD12VS2UQ/S911 datasheet, PESD12VS2UQ/S911 pinout, PESD12VS2UQ/S911 application, or PESD12VS2UQ/S911 equivalent, key selection criteria include low capacitance for signal integrity, unidirectional dual-line clamping capability, IEC 61000-4-2/4-5 compliance, and SOT663 footprint compatibility in space-constrained PCB layouts.
Technical Context
This device integrates two independent unidirectional ESD protection diodes sharing a common anode (Pin 3), enabling simultaneous protection of two separate signal paths referenced to ground. Its architecture supports operation below ground potential, making it suitable for RS-485, CAN, or LVDS lines where negative transients may occur.
Clamping behavior is defined per diode across Pins 1–3 and 2–3, with peak pulse power limited to 150 W (8/20 μs) and peak surge current rated at 5 A per diode. Reverse leakage remains below 1 nA at 12 V and 25 °C, ensuring minimal signal loading on protected lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 12 V - Maximum continuous operating voltage before conduction begins; defines upper limit of normal signal swing. |
| Clamping Voltage (VCL) | 19 V at 1 A / 35 V at 5 A - Voltage across diode during transient; determines maximum stress imposed on downstream ICs. |
| Diode Capacitance (Cd) | 38–100 pF at 1 MHz, VR = 0 V - Directly impacts high-frequency signal integrity; suitable for ≤100 Mbps data lines. |
| ESD Withstand (IEC 61000-4-2) | 30 kV contact discharge - Meets highest industrial immunity requirement without degradation after 10 pulses. |
| Peak Pulse Power (PPP) | 150 W at tp = 8/20 μs - Sustains short-duration surges per IEC 61000-4-5 without thermal failure. |
| Reverse Leakage Current (IRM) | <1 nA at 12 V, 25 °C - Negligible DC loading on sensitive analog or reference circuits. |
| Breakdown Voltage (VBR) | 14.7–15.3 V at IR = 5 mA - Confirms robust margin above VRWM for reliable turn-on during transients. |
Pinout & Package
SOT663 is a 3-pin ultra-small flat-lead surface-mount package (1.7 × 1.3 × 0.5 mm), optimized for high-density PCB layouts and automated assembly. Its lead pitch is 0.65 mm, and terminals are gull-wing shaped for reliable reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | Connects to first protected signal line; conducts transient current to common anode when voltage exceeds VRWM. |
| 2 | Cathode 2 | Connects to second protected signal line; electrically isolated from Pin 1 but shares return path via Pin 3. |
| 3 | Common Anode | Single ground-reference node; must be routed with low-inductance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Enables independent clamping of two signals with shared ground return-reduces component count vs. discrete diodes. |
| Low capacitance (38–100 pF) | Maintains signal edge fidelity on high-speed lines up to 100 Mbps without measurable rise-time degradation. |
| 30 kV ESD immunity (IEC 61000-4-2) | Guarantees robustness against human-body and contact-discharge events in factory, field, or bench environments. |
| 150 W surge rating (8/20 μs) | Withstands lightning-induced or inductive-switching surges per IEC 61000-4-5 without parametric shift. |
| SOT663 ultra-compact footprint | Occupies <0.7 mm² PCB area-ideal for USB-C, HDMI, or miniaturized industrial I/O modules. |
Applications
| Industrial RS-485 Interfaces | USB 2.0 Data Lines |
|---|---|
|
Use Scenario: Protecting differential A/B lines in factory-floor PLC communication nodes exposed to cable discharge and EFT. IC Role / Device Role / Timing Role: Unidirectional clamping diode pair shunting transients from both signal lines to common ground reference. Use Value: Prevents latch-up or gate oxide damage in RS-485 transceivers while preserving common-mode range and noise margin. |
Use Scenario: Safeguarding D+ and D− pins of USB 2.0 host controllers in embedded medical devices. IC Role / Device Role / Timing Role: Dual-cathode ESD suppressor placed immediately adjacent to USB connector to minimize trace inductance. Use Value: Limits clamped voltage to ≤35 V during 5 A surge, staying well below USB PHY overvoltage tolerance (typically 40 V). |
| Automotive LIN Bus Nodes | Audio Line Inputs (3.5 mm Jack) |
|
Use Scenario: ESD protection for single-wire LIN transceivers in body control modules subject to ISO 10605 testing. IC Role / Device Role / Timing Role: Cathode-anode-cathode configuration allows bidirectional transient suppression using unidirectional diodes. Use Value: Achieves 30 kV contact ESD immunity while maintaining LIN bus DC bias and slew rate requirements. |
Use Scenario: Shielding analog audio inputs on consumer AV receivers from user-handling ESD during cable insertion. IC Role / Device Role / Timing Role: Low-leakage (<1 nA) dual diode prevents DC offset drift in op-amp input stages. Use Value: 38–100 pF capacitance avoids high-frequency roll-off in 20 Hz–20 kHz audio band; no audible distortion introduced. |
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 |
|---|---|---|---|
| ESD12VD2U-02LS | Higher capacitance (120 pF typ), same VRWM (12 V), lower clamping (32 V @ 5 A) | Better suited for lower-speed lines (<50 Mbps); less ideal for USB 2.0 due to bandwidth impact | Select if cost sensitivity outweighs marginal capacitance penalty and board layout allows longer ground path |
| TPD2E001DRYR | Lower VRWM (5.5 V), higher capacitance (100 pF), integrated 10 Ω series resistors | Designed for 3.3 V logic; unsuitable for 12 V signal rails; adds RC filtering not needed in pure clamping use | Reject for 12 V systems-reverse standoff mismatch risks premature conduction during normal operation |
Compared with PESD12VS2UQ/S911, ESD12VD2U-02LS trades slightly higher capacitance for broader surge margin, while TPD2E001DRYR's 5.5 V VRWM makes it incompatible with 12 V signal domains-confirming PESD12VS2UQ/S911's unique suitability for mid-voltage industrial data lines.
Availability
PESD12VS2UQ/S911 is available at Aetrix Electronics and suitable for industrial automation interfaces, USB 2.0 peripheral designs, and automotive LIN bus nodes requiring stable component supply and long-term lifecycle support.
Supply support for PESD12VS2UQ/S911 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 standard products including ESD protection, logic, discretes, and MOSFETs, serving automotive, industrial, and computing markets.
The PESDxS2UQ series targets compact, high-performance ESD protection for multi-line interfaces-designed specifically for space-constrained, high-immunity applications where dual-line clamping and sub-100 pF capacitance are mandatory.
FAQ
What is the maximum recommended PCB trace length between PESD12VS2UQ/S911 and the protected connector?
Trace length should be ≤2 mm from each cathode pin (1 and 2) to its respective signal line, and ≤3 mm from the common anode (Pin 3) to the nearest low-inductance ground plane point. Longer traces increase inductive voltage overshoot during fast ESD events, degrading clamping effectiveness and risking downstream IC damage.
Can PESD12VS2UQ/S911 be used for bidirectional signal lines like RS-232?
No-PESD12VS2UQ/S911 is unidirectional only. For bidirectional lines, two devices must be placed back-to-back (anode-to-anode) or a dedicated bidirectional part such as PESD5V0S2UAT must be selected. Using this part on bidirectional lines risks forward conduction during negative signal excursions.
Does PESD12VS2UQ/S911 require external series impedance for optimal ESD performance?
No external resistor is required. The device is designed for direct placement between signal line and ground. Adding series resistance increases clamped voltage (V = I × R + VCL) and delays response-Nexperia specifies zero series impedance in all validated test setups per IEC 61000-4-2.
What is the thermal derating behavior above 85 °C ambient temperature?
Peak pulse power drops linearly from 150 W at 25 °C to 75 W at 150 °C junction temperature, per Figure 4 in the datasheet. At 105 °C ambient (assuming 30 °C rise), PPP ≈ 110 W. Designers must verify that worst-case surge energy (½ × V × I × t) stays within the derated PPP limit to avoid thermal runaway.
PESD12VS2UQ/S911 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-79, SOD-523
- Series:
- PESDxS2UQ
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 14.7V
- Voltage - Clamping (Max) @ Ipp:
- 19V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 38pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD12VS2UQ/S911 FAQ
1.How can I place an order for PESD12VS2UQ/S911 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD12VS2UQ/S911 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 PESD12VS2UQ/S911 reliable?
The price and inventory of PESD12VS2UQ/S911 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD12VS2UQ/S911 is usually 5 days.
3.What payment methods are accepted for PESD12VS2UQ/S911?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD12VS2UQ/S911 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD12VS2UQ/S911?
PESD12VS2UQ/S911 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD12VS2UQ/S911 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 PESD12VS2UQ/S911?
For technical support, including PESD12VS2UQ/S911 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD12VS2UQ/S911 requirements.
6.How does Aetrix verify that PESD12VS2UQ/S911 is sourced from the original manufacturer or authorized distributors?
All PESD12VS2UQ/S911 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 PESD12VS2UQ/S911 meets industry standards.
7.What is the process for return or replacement of PESD12VS2UQ/S911?
All PESD12VS2UQ/S911 units undergo pre-shipment inspection (PSI). If there is an issue with PESD12VS2UQ/S911, 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 PESD12VS2UQ/S911 part is unused and in its original packaging.
Return procedure for PESD12VS2UQ/S911:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD12VS2UQ/S911 Tags
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ESD9B5.0ST5G
onsemi
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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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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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