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Nexperia USA Inc. PESD24VS2UAT/ZLR
- Part No.:
- PESD24VS2UAT/ZLR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PESD24VS2UAT/ZLR.pdf
- Description:
- TVS DIODE 24VWM 70VC TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,924
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Product details
Overview
PESD24VS2UAT/ZLR from Nexperia is a unidirectional double ESD protection diode in common-cathode SOT23 configuration, designed to protect two data lines against IEC 61000-4-2 ESD (23 kV contact) and IEC 61000-4-5 surge (3 A, 8/20 µs). It features 24 V reverse stand-off voltage, 23 pF capacitance at 0 V, and clamps to 70 V at 3 A peak pulse current. Used in CAN bus and industrial data line protection.
For engineers reviewing the PESD24VS2UAT/ZLR datasheet, PESD24VS2UAT/ZLR pinout, PESD24VS2UAT/ZLR application, or PESD24VS2UAT/ZLR equivalent, key selection criteria include clamping voltage under surge, diode capacitance for high-speed signal integrity, reverse leakage at operating temperature, ESD robustness level, and SOT23 footprint compatibility with board layout constraints.
Technical Context
This device implements a dual-anode, single-common-cathode topology optimized for unidirectional transient suppression on positive-polarity signal lines. Its low 23 pF capacitance (at VR = 0 V, f = 1 MHz) enables use on data lines up to ~100 Mbps without significant signal distortion.
The 24 V VRWM rating targets systems with nominal 24 V supply rails or higher-voltage industrial interfaces, while its 70 V clamping voltage at 3 A (8/20 µs) ensures downstream ICs see limited overvoltage during surge events. Thermal derating follows standard SOT23 junction-to-ambient characteristics, with max Tj = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse voltage before conduction; sets minimum system operating margin for protected lines. |
| V(CL)R | 70 V at Ipp = 3 A (8/20 µs) - Peak voltage seen by protected circuit during worst-case surge; defines downstream voltage stress limit. |
| Cd | 23 pF at VR = 0 V, f = 1 MHz - Low capacitance preserves signal edge rate and minimizes insertion loss on high-speed lines. |
| IRM | <1 nA at VRWM = 24 V - Negligible leakage avoids DC loading or bias shift in precision analog or high-impedance nodes. |
| ESD Rating | 23 kV per IEC 61000-4-2 (contact discharge) - Confirmed immunity to human-body ESD events in industrial environments. |
| Package | SOT23 - Standard 3-pin surface-mount footprint enabling automated assembly and compact PCB layout near connectors. |
Pinout & Package
SOT23 plastic surface-mounted package (3 leads), dimensions per JEDEC TO-236AB: 2.9 × 1.3 × 1.0 mm (L × W × H), with gull-wing leads and standard thermal pad exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first protected line; connects to data line requiring unidirectional clamping to ground. |
| 2 | Anode 2 | Input terminal for second protected line; electrically isolated from Pin 1 but shares cathode path. |
| 3 | Common Cathode | Ground return path for both protection paths; must connect to low-impedance system ground near entry point. |
Key Features
| Feature | Design Value |
|---|---|
| Common-cathode dual-line protection | Enables simultaneous ESD/surge suppression on two independent signal paths using one compact SOT23 device. |
| Ultra-low capacitance (23 pF) | Maintains signal integrity on industrial serial buses (e.g., CAN FD, RS-485) without added jitter or rise-time degradation. |
| 23 kV IEC 61000-4-2 ESD rating | Exceeds Level 4 requirements for harsh industrial environments where operator handling or cable coupling induces high-energy discharges. |
| Low clamping voltage (70 V @ 3 A) | Restricts overvoltage stress on 24 V-rated transceivers or microcontroller I/O, reducing risk of latch-up or oxide damage. |
Applications
| Industrial CAN Bus Protection | RS-485 Data Line Protection |
|---|---|
Use Scenario: Protecting CAN_H and CAN_L lines in factory automation controllers exposed to ESD from maintenance personnel or cable hot-plugging. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at DB9 or M12 connector entry points. Use Value: Prevents CAN transceiver failure during 23 kV contact ESD events while adding only 23 pF load per line-no impact on 1 Mbps bit timing. | Use Scenario: Safeguarding differential RS-485 receivers in building management systems connected to long outdoor runs subject to lightning-induced surges. IC Role / Device Role / Timing Role: Dual-line clamp limiting voltage excursion on A/B lines to ≤70 V during 3 A (8/20 µs) surge transients. Use Value: Enables compliance with IEC 61000-4-5 Level 3 without external series impedance, preserving receiver common-mode range. |
| 24 V Sensor Interface Protection | PLC Digital Input Protection |
Use Scenario: Shielding analog/digital outputs of 24 V industrial sensors (e.g., proximity switches, pressure transmitters) against field wiring ESD. IC Role / Device Role / Timing Role: Standoff protection element between sensor output and PLC input, rated for 24 V nominal operation. Use Value: Blocks >30 kV air-gap discharges while maintaining sub-nA leakage-no offset error in 4–20 mA loop sensing. | Use Scenario: Hardening discrete 24 V digital inputs on programmable logic controllers against accidental short-to-rail or induced transients. IC Role / Device Role / Timing Role: First-stage clamping device on each input channel, referenced to chassis ground before optocoupler isolation. Use Value: Reduces need for secondary TVS or RC filtering; 24 V VRWM aligns with standard PLC input voltage thresholds. |
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 |
|---|---|---|---|
| ESD24VS2U-2/TR | Same VRWM (24 V), slightly higher clamping (75 V @ 3 A); Cd = 25 pF; identical SOT23-3 package. | Valid for same CAN/RS-485 use cases but requires verification of 5 V higher clamping margin at receiver inputs. | Select if sourcing flexibility is prioritized and 75 V clamping remains within downstream IC absolute maximum ratings. |
| TPD2E001DRYR | Lower VRWM (5.5 V), bidirectional, Cd = 11 pF; same SOT23-3 footprint but different internal topology (dual bidirectional). | Only suitable for low-voltage (≤5.5 V) data lines like USB or I²C-not compatible with 24 V industrial interfaces. | Reject for 24 V systems; consider only for mixed-signal boards needing ultra-low capacitance on auxiliary low-voltage lines. |
Compared with ESD24VS2U-2/TR and TPD2E001DRYR, PESD24VS2UAT/ZLR uniquely balances 24 V standoff, 23 kV ESD hardness, and 23 pF capacitance in SOT23-making it the only validated choice for ruggedized 24 V data interface protection without compromising speed or reliability.
Availability
PESD24VS2UAT/ZLR is available at Aetrix Electronics and suitable for industrial CAN bus protection, RS-485 data line hardening, and 24 V sensor interface designs requiring stable component supply across multi-year production cycles.
Supply support for PESD24VS2UAT/ZLR 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with scalable, reliable components.
The PESDxS2UAT series belongs to Nexperia's ESD protection portfolio, engineered specifically for robust, low-capacitance transient suppression on industrial data lines operating at 3.3 V to 24 V nominal voltages.
FAQ
What is the maximum peak pulse current the PESD24VS2UAT/ZLR can handle?
The device supports a peak pulse current of 3 A for an 8/20 µs exponential waveform per IEC 61000-4-5. This rating applies when measuring across either Pin 1–3 or Pin 2–3. Exceeding this value risks permanent parametric shift or junction failure, and derating is required above Tamb = 25 °C per Fig.5 in the datasheet.
Does PESD24VS2UAT/ZLR support bidirectional signal lines?
No-it is strictly unidirectional due to its common-cathode configuration. It protects only positive-going transients on lines referenced to ground. For bidirectional lines like USB D+/D− or I²C, a symmetric dual-bidirectional device such as PESD5V0S2UT is required instead.
How does the 23 pF capacitance affect high-speed CAN FD operation?
At 23 pF, the device adds negligible loading to CAN FD physical layers: total node capacitance remains well below the ISO 11898-2 limit of 100 pF, preserving signal rise/fall times and enabling reliable operation up to 5 Mbps. Layout best practices (short traces, ground plane) further minimize parasitic impact.
Is the PESD24VS2UAT/ZLR RoHS compliant and halogen-free?
Yes-Nexperia confirms full RoHS compliance (2011/65/EU) and halogen-free status per IEC 61249-2-21 for the PESD24VS2UAT/ZLR. The SOT23 package uses lead-free matte tin terminations and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life at ≤30 °C/85% RH.
PESD24VS2UAT/ZLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PESD24VS2UAT/ZLR FAQ
1.How can I place an order for PESD24VS2UAT/ZLR through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD24VS2UAT/ZLR 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 PESD24VS2UAT/ZLR reliable?
The price and inventory of PESD24VS2UAT/ZLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD24VS2UAT/ZLR is usually 5 days.
3.What payment methods are accepted for PESD24VS2UAT/ZLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD24VS2UAT/ZLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD24VS2UAT/ZLR?
PESD24VS2UAT/ZLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD24VS2UAT/ZLR 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 PESD24VS2UAT/ZLR?
For technical support, including PESD24VS2UAT/ZLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD24VS2UAT/ZLR requirements.
6.How does Aetrix verify that PESD24VS2UAT/ZLR is sourced from the original manufacturer or authorized distributors?
All PESD24VS2UAT/ZLR 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 PESD24VS2UAT/ZLR meets industry standards.
7.What is the process for return or replacement of PESD24VS2UAT/ZLR?
All PESD24VS2UAT/ZLR units undergo pre-shipment inspection (PSI). If there is an issue with PESD24VS2UAT/ZLR, 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 PESD24VS2UAT/ZLR part is unused and in its original packaging.
Return procedure for PESD24VS2UAT/ZLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD24VS2UAT/ZLR Tags
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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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