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Nexperia USA Inc. PESD24VL1BAF
- Part No.:
- PESD24VL1BAF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PESD24VL1BAF.pdf
- Description:
- TVS DIODE 24VWM 70VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,744
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Product details
Overview
PESD24VL1BAF from Nexperia is a bidirectional ESD protection diode in SOD323 (SC-76) package, designed to protect single signal lines against IEC 61000-4-2 level 4 ESD (±23 kV contact), IEC 61000-4-5 surge (3 A, 8/20 µs), with 24 V reverse standoff voltage, 11 pF capacitance, and 70 V clamping voltage at 3 A. It serves in high-speed data line protection where low capacitance and fast transient response are critical.
For engineers reviewing the PESD24VL1BAF datasheet, PESD24VL1BAF pinout, PESD24VL1BAF application, or PESD24VL1BAF equivalent, key selection criteria include bidirectional clamping capability, sub-12 pF capacitance for USB/USB-C/HDMI signal integrity, <1 nA leakage at 24 V, 200 W peak pulse power rating, and SOD323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device implements a symmetric dual-cathode TVS structure enabling true bidirectional clamping without polarity dependency. Its low 11 pF capacitance at 0 V bias ensures minimal signal distortion on high-frequency lines up to 500 MHz, while the 300 Ω differential resistance supports stable clamping behavior under fast-rising ESD transients.
The diode operates within a -55 °C to 150 °C ambient range and achieves 23 kV ESD immunity per IEC 61000-4-2 contact discharge, with clamping voltage held to ≤70 V at 3 A surge current - meeting stringent interface protection requirements for consumer and industrial data ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 24 V - Maximum continuous DC voltage the line can carry without triggering conduction. |
| Clamping Voltage | 70 V at 3 A (8/20 µs) - Peak voltage seen by protected IC during worst-case surge, limiting stress on downstream components. |
| Diode Capacitance | 11 pF at 1 MHz, 0 V - Enables use on USB 2.0, HDMI, audio, and other >100 Mbps interfaces without signal degradation. |
| Peak Pulse Power | 200 W (8/20 µs) - Sustains high-energy transients without thermal failure under standard surge test conditions. |
| ESD Withstand | ±23 kV contact discharge (IEC 61000-4-2 Level 4) - Exceeds industrial and commercial immunity requirements. |
| Leakage Current | <1 nA at 24 V - Prevents DC loading or battery drain in always-on portable or IoT signal paths. |
| Breakdown Voltage | 27.8 V typical (5 mA) - Ensures reliable turn-on margin above 24 V operating rail while avoiding false triggering. |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 2-pin, 1.3 mm pitch, 1.7 mm × 1.25 mm × 0.95 mm body height. Marking code "AF" on top surface. Cathode identification bar located at Pin 1 end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 (K1) | First cathode terminal of symmetrical dual-cathode structure; connects to protected line in bidirectional configuration. |
| 2 | Cathode 2 (K2) | Second cathode terminal; tied to ground reference to complete ESD current path during positive or negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or bipolar signal lines (e.g., USB D+/D−, RS-485) without polarity constraints. |
| 11 pF capacitance | Preserves signal edge rate and eye diagram integrity on high-speed digital interfaces up to 480 Mbps. |
| 23 kV ESD rating | Meets and exceeds IEC 61000-4-2 Level 4, eliminating need for secondary protection in most consumer-grade ports. |
| <1 nA leakage | Supports ultra-low-power designs including battery-backed sensors and always-on wake-up circuits. |
| 200 W peak power | Handles repetitive surge events in industrial environments without parameter drift or parametric shift. |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
|
Use Scenario: Protecting D+ and D− lines in USB 2.0 host/device ports against ESD during cable insertion/removal. IC Role / Device Role: Bidirectional transient voltage suppressor placed between connector and USB transceiver IC. Use Value: 11 pF capacitance avoids signal rise-time degradation; 70 V clamping prevents damage to ±3.3 V tolerant PHY inputs. |
Use Scenario: Safeguarding HDMI CEC and HPD pins exposed to user-accessible connectors. IC Role / Device Role: Low-capacitance ESD clamp on 5 V-tolerant control lines with fast edge rates. Use Value: Sub-1 nA leakage maintains HPD logic state integrity; 24 V VRWM aligns with HDMI 5 V supply margin. |
| Audio Line Inputs | Industrial RS-485 Transceivers |
|
Use Scenario: Shielding analog audio input jacks (e.g., 3.5 mm TRS) from user-handling ESD in consumer AV equipment. IC Role / Device Role: Signal-line protector on unbalanced line-level inputs before op-amp conditioning stage. Use Value: Bidirectional operation handles both positive and negative audio swing transients; 24 V standoff accommodates common-mode offsets. |
Use Scenario: Protecting RS-485 A/B differential bus lines in factory automation gateways exposed to field wiring surges. IC Role / Device Role: Primary ESD/surge clamp mounted at connector entry point before isolated transceiver. Use Value: 200 W peak power withstands multiple 3 A surges; 300 Ω dynamic resistance ensures predictable clamping onset. |
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 NUP4202MR6T1G | Higher capacitance (22 pF), lower ESD rating (±15 kV), same SOD-323 package. | Less suitable for >100 Mbps interfaces; better for cost-sensitive industrial controls with lower speed. | Select when budget constraints outweigh signal integrity needs and ESD exposure is moderate. |
| Vishay ESDBLE5.0D1W | Lower clamping voltage (5.5 V), higher capacitance (25 pF), different SOD-523 footprint. | Designed for 5 V logic rails only; incompatible with 24 V standoff requirement and SOD323 layout. | Avoid for 24 V-tolerant or high-speed lines; consider only for dedicated 3.3/5 V low-speed I/O protection. |
Compared with NUP4202MR6T1G and ESDBLE5.0D1W, PESD24VL1BAF uniquely balances 24 V standoff, 11 pF capacitance, and ±23 kV ESD rating in SOD323 - making it optimal for high-fidelity, mixed-voltage data interfaces requiring minimal board area and maximum transient headroom.
Availability
PESD24VL1BAF is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI hot-plug detection, and industrial RS-485 bus protection requiring stable component supply, consistent marking ("AF"), and full traceability to Nexperia's production lot records.
Supply support for PESD24VL1BAF 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, with leadership in ESD protection and automotive-qualified components.
PESD24VL1BAF belongs to Nexperia's PESD series of ultra-low-capacitance ESD protection diodes, engineered specifically for high-speed data line integrity in consumer, computing, and industrial connectivity applications.
FAQ
What is the maximum continuous operating voltage for PESD24VL1BAF?
The reverse standoff voltage (VRWM) is rated at 24 V - meaning the device remains non-conductive up to this DC or RMS voltage under normal operation. It begins clamping above ~25.4 V (minimum breakdown), ensuring safe margin for 24 V nominal systems like industrial I/O or PoE-powered peripherals.
Can PESD24VL1BAF be used on a 5 V logic line?
Yes, but with design consideration: its 24 V VRWM and 70 V clamping voltage are intentionally higher than typical 5 V rail protection devices. It provides robust surge margin but may allow higher transient voltage at the protected IC versus a 5 V-specific clamp - verify downstream IC absolute maximum ratings before deployment.
Is PESD24VL1BAF automotive qualified?
No. Per Nexperia's revision history (v.3, April 2023), this part is explicitly designated non-automotive. It lacks AEC-Q200 qualification and has not undergone automotive temperature cycling or lifetime reliability testing. For automotive applications, Nexperia offers the -Q qualified PESD24VL1BA-Q variant.
How should PESD24VL1BAF be laid out on the PCB for optimal ESD performance?
Place the device within 2 mm of the protected connector, route the protected line directly to Pin 1 (K1), connect Pin 2 (K2) to a low-inductance ground plane via shortest possible trace, and avoid routing unprotected signals parallel to the protected path - all per Nexperia's layout guidelines in section 10 of the datasheet.
PESD24VL1BAF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 25.4V
- Voltage - Clamping (Max) @ Ipp:
- 70V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 11pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PESD24VL1BAF FAQ
1.How can I place an order for PESD24VL1BAF through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD24VL1BAF 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 PESD24VL1BAF reliable?
The price and inventory of PESD24VL1BAF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD24VL1BAF is usually 5 days.
3.What payment methods are accepted for PESD24VL1BAF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD24VL1BAF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD24VL1BAF?
PESD24VL1BAF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD24VL1BAF 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 PESD24VL1BAF?
For technical support, including PESD24VL1BAF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD24VL1BAF requirements.
6.How does Aetrix verify that PESD24VL1BAF is sourced from the original manufacturer or authorized distributors?
All PESD24VL1BAF 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 PESD24VL1BAF meets industry standards.
7.What is the process for return or replacement of PESD24VL1BAF?
All PESD24VL1BAF units undergo pre-shipment inspection (PSI). If there is an issue with PESD24VL1BAF, 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 PESD24VL1BAF part is unused and in its original packaging.
Return procedure for PESD24VL1BAF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD24VL1BAF Tags
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