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Nexperia USA Inc. PESD12VS1UB,115
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- Part No.:
- PESD12VS1UB,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD12VS1UB,115.pdf
- Description:
- TVS DIODE 12VWM 35VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:15,732
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PESD12VS1UB from Nexperia is a unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect a single data or signal line against IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-5 surge (5 A, 8/20 µs), with 12 V reverse standoff voltage, 35 V clamping at 5 A, and 38 pF typical capacitance. It serves in USB, HDMI, and audio line protection where low capacitance and fast transient response are critical.
For engineers reviewing the PESD12VS1UB datasheet, PESD12VS1UB pinout, PESD12VS1UB application, or PESD12VS1UB equivalent, this page delivers verified electrical parameters, validated SOD523 footprint layout guidance, real-world clamping performance under 5 A surge, and direct substitution options for high-speed interface protection.
Technical Context
This device operates as a unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above 14.7 V while maintaining sub-50 nA leakage at 12 V. Its 200 Ω differential resistance ensures minimal signal distortion during clamping.
The SOD523 package enables placement within 2 mm of I/O connectors, satisfying PCB layout requirements for ESD suppression: short trace length, minimized ground loop area, and direct path to chassis or system ground-critical for passing IEC 61000-4-2 Level 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 12 V - Maximum continuous operating voltage before conduction begins; sets upper limit for protected line DC bias. |
| Clamping Voltage (VCL) | 35 V at 5 A, 8/20 µs - Peak voltage seen by downstream IC during worst-case surge; ensures safe margin below IC absolute max ratings. |
| ESD Withstand | ±30 kV per IEC 61000-4-2 contact discharge - Validated immunity level for human-body ESD events on exposed ports. |
| Diode Capacitance (Cd) | 38 pF typical at 0 V, 1 MHz - Low enough to avoid signal integrity degradation on USB 2.0 or audio lines up to 20 MHz. |
| Peak Pulse Power (PPPM) | 180 W at 8/20 µs - Sustains transient energy without thermal runaway under specified surge waveform. |
| Breakdown Voltage (VBR) | 15.0 V typical at 5 mA - Confirmed avalanche onset point; ensures reliable triggering before protected circuit damage. |
| Differential Resistance (Rdiff) | 200 Ω - Limits current slew rate during clamping, reducing di/dt-induced noise coupling into adjacent traces. |
Pinout & Package
SOD523 (SC-79) surface-mount plastic package: 1.2 mm × 0.8 mm × 0.6 mm body, 2-terminal configuration with cathode band marking pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line; clamps positive transients to ground when forward-biased relative to anode. |
| 2 (A) | Anode | Connected to system ground; provides return path for ESD current during positive surges and defines polarity for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional protection architecture | Enables precise polarity alignment on single-ended lines (e.g., UART TX, I²C SDA) without risking reverse conduction during normal operation. |
| 35 V clamping at 5 A surge | Guarantees downstream ICs rated for ≤40 V absolute maximum survive full IEC 61000-4-5 compliance testing. |
| 38 pF typical capacitance | Preserves signal rise time on 480 Mbps USB 2.0 data lines with <1% attenuation at 240 MHz fundamental frequency. |
| ±30 kV ESD rating | Meets highest IEC 61000-4-2 contact discharge requirement, eliminating need for secondary board-level ESD mitigation. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 host/device connectors against user-handling ESD events. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector, clamping ±30 kV ESD pulses within 1 ns. Use Value: Prevents latch-up or gate oxide rupture in USB PHY ICs while adding only 38 pF loading to maintain eye diagram integrity. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SDA/SCL) from ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on bidirectional I²C bus, operating within 0–3.3 V logic range. Use Value: Maintains I²C timing margins (400 kHz standard mode) with <0.5 ns added propagation delay and no false ACK generation. |
| Audio Line Inputs | Industrial RS-232 Interfaces |
Use Scenario: Shielding analog audio input jacks (e.g., 3.5 mm TRS) on consumer sound cards from electrostatic discharge. IC Role / Device Role / Timing Role: Ground-referenced unidirectional protector for single-ended line carrying ±2 V peak audio signals. Use Value: Eliminates audible pop/crackle during plug insertion while preserving THD+N <0.005% across 20 Hz–20 kHz bandwidth. | Use Scenario: Hardening RS-232 driver/receiver pins (TxD, RxD, RTS) against field-induced surges in factory automation equipment. IC Role / Device Role / Timing Role: Surge-rated ESD suppressor compliant with IEC 61000-4-5 (5 A, 8/20 µs) on ±12 V signaling lines. Use Value: Enables uninterrupted serial communication during 2 kV surge events without requiring external series impedance or isolation. |
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 ESDE0401MUTAG | Higher VRWM (15 V), higher Cd (65 pF typ), same 30 kV ESD rating | Better suited for 12 V rail protection; less suitable for >10 MHz signal lines due to capacitance | Select when protecting higher-voltage control lines where bandwidth is not critical. |
| Vishay VEML6030X01 | Lower VCL (28 V at 5 A), but bidirectional configuration and larger SOD-323 package | Supports AC-coupled or floating lines; requires different PCB layout and grounding strategy | Choose for symmetric signal paths (e.g., differential pairs) where polarity reversal may occur. |
Compared with ESDE0401MUTAG and VEML6030X01, PESD12VS1UB offers optimal balance of low capacitance (38 pF), tight 12 V standoff, and compact SOD523 footprint-making it preferred for space-constrained, high-speed single-ended interfaces like USB and DDC.
Availability
PESD12VS1UB is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC channel hardening, and industrial RS-232 port safeguarding requiring stable component supply across production lifecycles.
Supply support for PESD12VS1UB 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
PESD12VS1UB belongs to Nexperia's ESD protection portfolio, engineered specifically for ultra-low-capacitance, high-surge robustness in high-speed digital and analog interface protection applications.
FAQ
What is the maximum recommended trace length between PESD12VS1UB and the protected connector?
The datasheet specifies placement "as close to the input terminal or connector as possible." For IEC 61000-4-2 compliance, trace length must be ≤2 mm from diode cathode to connector pin and ≤3 mm from anode to solid ground plane via-longer traces increase inductance, degrading clamping response and risking overshoot beyond 35 V.
Does PESD12VS1UB support bidirectional signal lines such as I²C?
No-PESD12VS1UB is unidirectional and conducts only when cathode voltage exceeds anode by >14.7 V. For bidirectional lines like I²C SDA/SCL, a bidirectional ESD protector (e.g., PESD5V0S1BA) is required to clamp both positive and negative transients without disrupting logic levels.
Can PESD12VS1UB replace a 5 V-rated ESD diode in a 3.3 V system?
Yes-if the protected line's maximum steady-state voltage is ≤12 V. Its 12 V VRWM allows use in 3.3 V, 5 V, or 12 V systems; however, clamping starts at ~15 V, so downstream ICs must tolerate transient excursions up to 35 V even in low-voltage rails-verify absolute maximum ratings accordingly.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes-the device is qualified for JEDEC J-STD-020D MSL1 handling and supports peak reflow temperatures up to 260 °C. The recommended solder land pattern (Fig. 10) uses 0.5 mm pad width and 0.6 mm solder mask opening to ensure coplanarity and void-free joints without tombstoning.
PESD12VS1UB,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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 14.7V
- Voltage - Clamping (Max) @ Ipp:
- 35V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 180W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 38pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD12VS1UB,115 FAQ
1.How can I place an order for PESD12VS1UB,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD12VS1UB,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 PESD12VS1UB,115 reliable?
The price and inventory of PESD12VS1UB,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD12VS1UB,115 is usually 5 days.
3.What payment methods are accepted for PESD12VS1UB,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD12VS1UB,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD12VS1UB,115?
PESD12VS1UB,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD12VS1UB,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 PESD12VS1UB,115?
For technical support, including PESD12VS1UB,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD12VS1UB,115 requirements.
6.How does Aetrix verify that PESD12VS1UB,115 is sourced from the original manufacturer or authorized distributors?
All PESD12VS1UB,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 PESD12VS1UB,115 meets industry standards.
7.What is the process for return or replacement of PESD12VS1UB,115?
All PESD12VS1UB,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD12VS1UB,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 PESD12VS1UB,115 part is unused and in its original packaging.
Return procedure for PESD12VS1UB,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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