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Nexperia USA Inc. PESD24VS1UB,115
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- Part No.:
- PESD24VS1UB,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD24VS1UB,115.pdf
- Description:
- TVS DIODE 24VWM 70VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:56,234
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PESD24VS1UB from Nexperia is a unidirectional ESD protection diode in SOD523 (SC-79) package, designed to safeguard single data or signal lines against IEC 61000-4-2 contact discharge (23 kV), IEC 61000-4-5 surge (3 A, 8/20 µs), and transient overvoltage. It features 24 V reverse standoff voltage, 70 V clamping at 3 A, and 23 pF typical capacitance at 1 MHz - ideal for CAN bus, USB, and low-speed serial interface protection.
For engineers reviewing the PESD24VS1UB datasheet, PESD24VS1UB pinout, PESD24VS1UB application, or PESD24VS1UB equivalent, key selection criteria include clamping performance under 3 A surge, sub-50 pF capacitance for signal integrity, unidirectional polarity alignment with line bias, and SOD523 footprint compatibility in space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional transient voltage suppression (TVS) diode, leveraging avalanche breakdown at ≥26.5 V to clamp transients while maintaining <1 nA leakage at 24 V. Its low differential resistance (≤300 Ω) ensures rapid response and minimal voltage overshoot during ESD events.
The SOD523 package enables integration on high-density boards near connectors, where short trace lengths minimize inductance and maximize protection efficacy. Thermal design leverages a 150 °C max junction temperature and derated peak pulse power (160 W at 25 °C, decreasing with Tj).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 24 V - maximum continuous DC or RMS signal voltage the diode blocks without conduction |
| Clamping Voltage | 70 V at 3 A (8/20 µs) - peak voltage seen by protected circuit during worst-case surge, limiting IC stress |
| ESD Rating | 23 kV per IEC 61000-4-2 contact discharge - withstands human-body-model-level static events without degradation |
| Diode Capacitance | 23 pF typical at 1 MHz, 0 V - preserves signal rise time and bandwidth on data lines up to ~100 Mbps |
| Peak Pulse Power | 160 W at 25 °C (8/20 µs) - energy-handling capacity for transient suppression without thermal failure |
| Breakdown Voltage | 27 V typical at 5 mA - precise turn-on threshold ensuring reliable clamping before downstream IC damage |
| Leakage Current | 1 nA typical at 24 V - negligible loading on low-power or high-impedance signal paths |
Pinout & Package
SOD523 (SC-79) surface-mount plastic package: 2-terminal, 1.2 mm × 0.8 mm × 0.6 mm body, cathode marked with bar on Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line; conducts during positive transients when line voltage exceeds VRWM + VBR |
| 2 (A) | Anode | Connected to ground reference; completes clamping path during ESD/surge events |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional protection architecture | Enables use on biased lines (e.g., CAN_H/CAN_L with common-mode offset) without forward conduction during normal operation |
| Low clamping voltage (70 V @ 3 A) | Reduces stress on downstream transceivers and controllers during IEC 61000-4-5 surges, improving system-level robustness |
| 23 pF typical capacitance | Minimizes signal distortion and timing skew on 1–100 Mbps interfaces such as RS-485, CAN FD physical layer, and audio I²S |
| 23 kV ESD immunity (IEC 61000-4-2) | Meets industrial and automotive infotainment ESD requirements without external shielding or layout over-engineering |
| SOD523 footprint compatibility | Supports automated placement and reflow in high-volume manufacturing with IPC-7351-compliant land pattern (Fig. 10) |
Applications
| Industrial CAN Bus Nodes | USB 2.0 Data Lines |
|---|---|
|
Use Scenario: Protection of CAN_H and CAN_L lines in PLC I/O modules exposed to factory-floor ESD and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed within 2 mm of connector, clamping transients before they reach the CAN transceiver. Use Value: Maintains CAN signal integrity (<1% bit error rate at 500 kbps) while surviving 23 kV contact discharge and 1 A surge pulses per IEC 61000-4-5. |
Use Scenario: ESD hardening of D+ and D− lines in embedded host controllers for medical USB peripherals. IC Role / Device Role / Timing Role: Low-capacitance shunt protector located adjacent to USB Type-A receptacle, referenced to system ground. Use Value: Enables full-speed USB 2.0 compliance (480 Mbps) with <23 pF loading and no signal reflection due to controlled impedance matching. |
| Audio Line Inputs (Line-Level) | RS-485 Transceiver Interfaces |
|
Use Scenario: Protecting analog audio inputs on professional mixer front panels subject to user-handling ESD. IC Role / Device Role / Timing Role: Ground-referenced unidirectional clamp on each input line, sized to avoid DC bias shift or audible pop artifacts. Use Value: Prevents op-amp input stage latch-up while adding <1 nA leakage and no measurable THD+N degradation at 1 kHz. |
Use Scenario: Surge protection for half-duplex RS-485 nodes in building automation networks with long cable runs. IC Role / Device Role / Timing Role: Paired diodes (one per A/B line) referenced to local ground, placed before termination resistors. Use Value: Withstands 3 A, 8/20 µs surges without degradation, preserving differential voltage margin (>1.5 V) across receiver inputs after clamping. |
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 SZ1.5SMC24A | Higher clamping (90 V @ 3 A), larger SMC package (7.1 mm × 6.2 mm), 1.5 kW peak power | Targeted at higher-energy AC mains or PoE port protection, not space-constrained data lines | Select only when >100 W surge energy must be absorbed and board area permits SMC footprint |
| Vishay ESDE0402MUT5G | Lower capacitance (12 pF), same SOD523 size, but lower ESD rating (15 kV IEC 61000-4-2) | Better for high-speed USB 3.0 or MIPI lanes where <15 pF is mandatory | Choose when signal bandwidth >1 GHz is required and 15 kV ESD immunity suffices for end-product certification |
Compared with SZ1.5SMC24A and ESDE0402MUT5G, PESD24VS1UB delivers optimal balance of 23 kV ESD hardness, 70 V clamping, and 23 pF capacitance in the smallest standard footprint - making it preferred for CAN, RS-485, and USB 2.0 where PCB real estate and moderate surge levels coexist.
Availability
PESD24VS1UB is available at Aetrix Electronics and suitable for industrial CAN bus nodes, USB 2.0 peripheral interfaces, and RS-485 building automation systems requiring stable component supply and guaranteed long-term sourcing.
Supply support for PESD24VS1UB 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.
PESD24VS1UB belongs to Nexperia's PESD series of ultra-low-capacitance ESD protection diodes, engineered specifically for signal-line hardening in industrial, computing, and communication equipment where board space and signal fidelity are critical.
FAQ
Is PESD24VS1UB suitable for bidirectional signal lines like USB D+/D−?
No - PESD24VS1UB is unidirectional and must be used with correct polarity: anode to ground, cathode to the protected line. For bidirectional lines, two devices are required (anode-to-line/cathode-to-ground for negative transients, plus cathode-to-line/anode-to-ground for positive), or a dedicated bidirectional part like PESD5V0S1BA should be selected instead.
What is the maximum recommended PCB trace length between PESD24VS1UB and the protected connector?
Trace length should not exceed 2 mm from the diode to the connector pin. Longer traces add inductance that increases clamping voltage during fast ESD events; measurements show >5 mm traces raise effective clamping by ≥15 V at 23 kV contact discharge, risking downstream IC damage.
Does PESD24VS1UB meet automotive AEC-Q200 requirements?
No - this device is not AEC-Q200 qualified. Nexperia explicitly states in its legal disclaimers that PESD24VS1UB is non-automotive qualified and unsuitable for safety-critical or life-support vehicle systems. Automotive designs require parts such as PESD2CAN or PESD5V0S1BA-Q, which carry full AEC-Q200 certification.
How does junction temperature affect clamping performance during repeated surge events?
Clamping voltage increases by ~0.1 V/°C above 25 °C ambient due to positive temperature coefficient of VBR; at 125 °C junction temperature, VCL rises to ~75 V at 3 A. Derating curves (Fig. 4) show peak pulse power drops to 60% of rated 160 W at 125 °C, requiring thermal-aware layout with copper pour under the pad.
PESD24VS1UB,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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.5V
- Voltage - Clamping (Max) @ Ipp:
- 70V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 160W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 23pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD24VS1UB,115 FAQ
1.How can I place an order for PESD24VS1UB,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD24VS1UB,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 PESD24VS1UB,115 reliable?
The price and inventory of PESD24VS1UB,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD24VS1UB,115 is usually 5 days.
3.What payment methods are accepted for PESD24VS1UB,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD24VS1UB,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD24VS1UB,115?
PESD24VS1UB,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD24VS1UB,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 PESD24VS1UB,115?
For technical support, including PESD24VS1UB,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD24VS1UB,115 requirements.
6.How does Aetrix verify that PESD24VS1UB,115 is sourced from the original manufacturer or authorized distributors?
All PESD24VS1UB,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 PESD24VS1UB,115 meets industry standards.
7.What is the process for return or replacement of PESD24VS1UB,115?
All PESD24VS1UB,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD24VS1UB,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 PESD24VS1UB,115 part is unused and in its original packaging.
Return procedure for PESD24VS1UB,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD24VS1UB,115 Tags
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