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Nexperia USA Inc. PESD3V3L1BAF
- Part No.:
- PESD3V3L1BAF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PESD3V3L1BAF.pdf
- Description:
- TVS DIODE 3.3VWM 26VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,529
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Product details
Overview
PESD3V3L1BAF from Nexperia is a low-capacitance bidirectional ESD protection diode in SOD323 (SC-76) package, designed to protect one signal line against IEC 61000-4-2 level 4 ESD (±30 kV contact), IEC 61000-4-5 surge (18 A), with 3.3 V reverse standoff voltage, 101 pF capacitance, and 26 V clamping voltage at 18 A. It is used in high-speed data lines where low parasitic capacitance and fast transient response are critical.
For engineers reviewing the PESD3V3L1BAF datasheet, PESD3V3L1BAF pinout, PESD3V3L1BAF application, or PESD3V3L1BAF equivalent, key selection criteria include clamping voltage under 18 A surge, sub-105 pF capacitance at 1 MHz, bidirectional protection capability, and compatibility with 3.3 V logic interfaces in space-constrained layouts.
Technical Context
This dual-cathode bidirectional TVS diode implements a symmetrical back-to-back PN junction configuration, enabling equal clamping for positive and negative transients without polarity dependence. Its ultra-low 101 pF capacitance ensures minimal signal distortion on high-frequency lines such as USB 2.0, HDMI DDC, or I²C.
The device operates within a -65 °C to +150 °C ambient range, with a maximum junction temperature of 150 °C and thermal derating defined per Figure 4. It delivers 500 W peak pulse power (8/20 µs) and maintains <0.09 µA reverse leakage at 3.3 V, supporting low-power always-on interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 3.3 V - Ensures no conduction during normal 3.3 V signal operation; defines maximum working voltage before leakage rises. |
| Clamping Voltage (VCL) | 26 V at IPPM = 18 A - Limits transient voltage seen by downstream ICs during IEC 61000-4-5 surge events. |
| Diode Capacitance (Cd) | 101 pF at 1 MHz, 0 V - Enables use on 480 Mbps USB 2.0 or 100 kHz–400 kHz I²C without signal integrity degradation. |
| ESD Withstand (IEC 61000-4-2) | ±30 kV contact discharge - Meets highest industrial immunity requirement for user-accessible ports. |
| Peak Pulse Current (IPPM) | 18 A (8/20 µs) - Supports robust protection against lightning-induced surges in telecom and industrial interfaces. |
| Reverse Leakage (IRM) | 0.09 µA at VRWM = 3.3 V - Prevents measurable DC loading on battery-powered or high-impedance sensor nodes. |
| Breakdown Voltage (VBR) | 6.4 V typical at 5 mA - Provides safe margin above 3.3 V rail while triggering reliably before system damage threshold. |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.3 mm pitch, 1.7 mm × 1.25 mm × 0.95 mm body; marking bar denotes cathode side; JEDEC-compliant footprint per Figure 10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode 1) | Forms first PN junction anode toward protected line; enables conduction during negative transients. |
| 2 | K2 (Cathode 2) | Forms second PN junction anode toward ground; completes symmetrical bidirectional path for positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Single-device protection of AC-coupled or dual-polarity data lines (e.g., USB D+/D−, RS-485) without external biasing. |
| Low 101 pF capacitance | Preserves signal rise/fall times on 480 Mbps USB 2.0 or 100 Mbps Ethernet MDI-X lines; avoids timing skew. |
| 26 V clamping at 18 A | Keeps protected ICs (e.g., USB transceivers, audio codecs) below absolute maximum ratings during surge events. |
| 0.09 µA reverse leakage | Eliminates measurable current drain on 3.3 V supply rails in always-on IoT sensor nodes or wearables. |
| ±30 kV IEC 61000-4-2 rating | Exceeds EN 61000-6-2 industrial immunity requirements for front-panel connectors and docking interfaces. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
|
Use Scenario: Protection of D+ and D− differential pair on host/device USB ports exposed to user handling and cable coupling. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed within 3 mm of USB connector to clamp ESD before reaching PHY IC. Use Value: 101 pF capacitance avoids signal integrity loss at 480 Mbps; 26 V clamping prevents damage to TUSB2036 or similar transceivers. |
Use Scenario: ESD safeguard for HDMI Display Data Channel (DDC) lines (SCL/SDA) connecting source to display. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on 5 V-tolerant I²C bus operating up to 100 kHz, located adjacent to HDMI receptacle. Use Value: Sub-0.1 µA leakage avoids pull-up current error; 3.3 V VRWM aligns with DDC logic levels while allowing 5 V tolerance via clamping. |
| Industrial RS-485 Transceivers | Audio Line Inputs (3.5 mm Jack) |
|
Use Scenario: Surge protection for RS-485 A/B bus lines in factory automation gateways subject to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Primary ESD/surge clamp on differential bus, mounted directly at terminal block or RJ-45 jack. Use Value: 18 A IEC 61000-4-5 surge rating handles induced lightning energy; bidirectional symmetry matches RS-485 differential signaling. |
Use Scenario: ESD protection for unbalanced analog audio inputs (left/right/ground) on consumer AV receivers or portable speakers. IC Role / Device Role / Timing Role: Single-diode solution across each signal-to-ground path on 3.5 mm TRS jack, minimizing board area. Use Value: 3.3 V standoff avoids clipping of ±2 V audio peaks; 26 V clamping protects op-amp input stages from user-handling discharges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4105MR6T1G | Higher 130 pF capacitance; 3.3 V VRWM; 24 V VCL at 16 A; SOT-563 package (3× larger footprint). | Less suitable for USB 2.0 due to higher capacitance; better thermal mass for repeated surge events. | Select when PCB layout allows larger package and surge repetition rate exceeds PESD3V3L1BAF's 150 °C Tj limit. |
| Vishay ESDBLE5.0D1W | Lower 12 pF capacitance; 5.0 V VRWM; 12 V VCL at 5 A; SOD-323 package; rated only to ±15 kV ESD. | Better for high-speed SerDes; incompatible with 3.3 V logic due to higher standoff voltage and lower clamping headroom. | Select only for 5 V systems requiring ultra-low capacitance; not drop-in for 3.3 V interfaces with tight clamping margins. |
Compared with NUP4105MR6T1G and ESDBLE5.0D1W, PESD3V3L1BAF uniquely balances 3.3 V compatibility, 101 pF capacitance, ±30 kV ESD rating, and SOD323 size-making it optimal for space-constrained 3.3 V data lines needing full IEC 61000-4-2 level 4 compliance.
Availability
PESD3V3L1BAF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC safeguarding, and industrial RS-485 transceiver circuits requiring stable component supply across production lifecycles.
Supply support for PESD3V3L1BAF 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, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
PESD3V3L1BAF belongs to Nexperia's ESD protection portfolio, engineered specifically for low-capacitance, bidirectional transient suppression on high-speed digital and analog signal lines in consumer, computing, and industrial equipment.
FAQ
What is the maximum recommended PCB trace length between PESD3V3L1BAF and the protected connector?
Per Nexperia application guidance (Section 10), the device must be placed within 3 mm of the connector or input terminal. Longer traces increase inductance, degrading clamping performance during ESD events-measured waveforms show >5 ns delay and >15% overshoot beyond this distance. Ground return path must also be direct and low-inductance.
Can PESD3V3L1BAF protect a 5 V tolerant I²C bus?
Yes, but only if the bus operates at ≤3.3 V logic levels. Its 3.3 V VRWM means it begins conducting above that voltage; using it on a true 5 V bus would cause excessive leakage and possible malfunction. For 5 V I²C, select a part with ≥5.5 V VRWM like PESD5V0L1BAF.
Does PESD3V3L1BAF meet automotive AEC-Q200 requirements?
No. The datasheet revision history explicitly states this device was changed to non-automotive qualification in April 2023. Automotive-grade alternatives (e.g., PESD3V3L1BAF-Q) require separate qualification and are marked with "-Q" suffix; this part is intended for industrial and consumer applications only.
How does the dual-cathode configuration enable bidirectional protection?
Pin 1 (K1) and Pin 2 (K2) are cathodes of two opposing diodes sharing a common anode node internally. During positive transients, current flows from line → K2 → internal anode → ground; during negative transients, current flows from ground → K1 → internal anode → line-creating symmetrical clamping without polarity dependency.
PESD3V3L1BAF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 18A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 101pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PESD3V3L1BAF FAQ
1.How can I place an order for PESD3V3L1BAF through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD3V3L1BAF 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 PESD3V3L1BAF reliable?
The price and inventory of PESD3V3L1BAF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD3V3L1BAF is usually 5 days.
3.What payment methods are accepted for PESD3V3L1BAF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD3V3L1BAF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD3V3L1BAF?
PESD3V3L1BAF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD3V3L1BAF 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 PESD3V3L1BAF?
For technical support, including PESD3V3L1BAF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD3V3L1BAF requirements.
6.How does Aetrix verify that PESD3V3L1BAF is sourced from the original manufacturer or authorized distributors?
All PESD3V3L1BAF 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 PESD3V3L1BAF meets industry standards.
7.What is the process for return or replacement of PESD3V3L1BAF?
All PESD3V3L1BAF units undergo pre-shipment inspection (PSI). If there is an issue with PESD3V3L1BAF, 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 PESD3V3L1BAF part is unused and in its original packaging.
Return procedure for PESD3V3L1BAF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD3V3L1BAF 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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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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