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Nexperia USA Inc. PTVS18VU1UPAZ
- Part No.:
- PTVS18VU1UPAZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- 3-PowerUDFN
- Datasheet:
-
PTVS18VU1UPAZ.pdf
- Description:
- TVS DIODE 18VWM 29.2VC 3HUSON
- Quantity:
- Payment:
- Shipping:
Inventory:8,307
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Product details
Overview
PTVS18VU1UPAZ from Nexperia is a unidirectional 300 W Transient Voltage Suppressor (TVS) in DFN2020-3 (SOT1061) package, designed for robust overvoltage protection of single-line DC power and signal paths. It features 18 V reverse standoff voltage (VRWM), 97 A peak pulse current (8/20 µs), 32 V clamping voltage at 97 A, 1 nA reverse leakage at VRWM, and AEC-Q101 qualification - deployed in automotive body control modules and industrial power rails.
For engineers reviewing the PTVS18VU1UPAZ datasheet, PTVS18VU1UPAZ pinout, PTVS18VU1UPAZ application, or PTVS18VU1UPAZ equivalent, key selection criteria include clamping performance under IEC 61000-4-5 surge, ESD immunity (±30 kV contact/air), ultra-thin 0.65 mm profile for space-constrained PCB layouts, and thermal-enhanced DFN2020-3 packaging for high-power transient dissipation.
Technical Context
This unidirectional TVS operates as a clamping diode between anode (pins 1 & 2) and cathode (pin 3), triggering conduction when transient voltage exceeds 20–22.1 V breakdown (VBR at 1 mA). Its low dynamic resistance enables rapid response to 8/20 µs surges and sub-ns ESD events.
Clamping behavior is characterized by 29.2 V at 10.3 A (10/1000 µs) and 32 V at 97 A (8/20 µs), with 830 pF capacitance at 0 V bias - optimized for DC power line and low-speed signal line protection where minimal capacitive loading and tight voltage limiting are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 18 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating window for 12–15 V nominal systems. |
| VBR (min) | 20 V - Minimum breakdown voltage at 1 mA; ensures reliable turn-on above normal operating voltage with margin. |
| VCL @ 97 A | 32 V - Clamped voltage during 8/20 µs surge; limits downstream IC stress to ≤32 V during 3000 W transient events. |
| IPP (8/20 µs) | 97 A - Peak surge current capability per IEC 61000-4-5; supports Level 4 (4 kV) AC mains and automotive load dump protection. |
| IRM | 1 nA - Reverse leakage at VRWM; negligible power loss and signal integrity impact in always-on monitoring circuits. |
| Cd | 830 pF - Junction capacitance at 0 V; suitable for <1 MHz power rails and low-speed interfaces (e.g., LIN, CAN FD standby lines). |
| ESD Rating | ±30 kV - Contact and air discharge per IEC 61000-4-2; eliminates need for external ESD staging in exposed connectors. |
Pinout & Package
DFN2020-3 (SOT1061) is a leadless, thermally enhanced ultra-thin plastic package measuring 2.0 mm × 2.0 mm × 0.65 mm with 1.3 mm pitch and exposed thermal pad (not electrically connected). Optimized for reflow soldering and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Primary current entry point for forward-biased surge conduction; tied to protected line (e.g., +12 V rail). |
| 2 | Anode | Parallel anode connection - doubles bond wire current capacity and reduces parasitic inductance vs. single-pin anode. |
| 3 | Cathode | Common return path to ground or low-side reference; connects to system GND plane with minimal loop area. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Protects positive-polarity lines only - avoids false triggering on negative transients, ideal for DC power inputs. |
| AEC-Q101 qualification | Validated for automotive temperature range (−55 °C to +150 °C junction) and mechanical stress - suitable for under-hood ECUs. |
| Thermal-enhanced DFN | 0.65 mm height and copper-exposed pad design enable 300 W pulse power dissipation without heatsink in compact footprints. |
| Low clamping ratio | VCL/VBR = 32 V / 20 V = 1.6 - tighter voltage control than typical TVS diodes (>1.8), reducing risk of downstream overvoltage damage. |
| IEC 61000-4-5 compliance | Rated for 3000 W (8/20 µs) peak pulse power - meets EN 61000-4-5 Level 4 immunity requirements for industrial equipment. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Power Input |
|---|---|
Use Scenario: Protecting 12 V supply rail in BCM against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed at connector entry point to shunt surge energy to chassis ground. Use Value: Limits rail voltage to ≤32 V during 97 A 8/20 µs surge, preventing damage to MCU, CAN transceivers, and power regulators. |
Use Scenario: Safeguarding 24 V DC input of programmable logic controller against induced surges from nearby motor switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power entry, coordinated with upstream fuse and downstream LC filter. Use Value: Withstands 300 W 10/1000 µs surges (10.3 A) and clamps to 29.2 V, preserving input stage MOSFETs and supervisor ICs. |
| USB-C Power Delivery Port | Smart Meter Battery Backup Line |
Use Scenario: ESD and surge protection on VBUS line of USB-C receptacle exposed to user handling and field wiring. IC Role / Device Role / Timing Role: First-line transient suppressor mounted adjacent to connector, with short trace to ground plane. Use Value: Clamps ±30 kV ESD pulses to ≤22 V (positive) and ≤1 V (negative) at 30 ns, preventing gate oxide damage in PD controller. |
Use Scenario: Protecting lithium-ion backup battery charging circuit from EFT and lightning-induced surges on meter's auxiliary power input. IC Role / Device Role / Timing Role: Low-leakage (1 nA) TVS on 3.3 V or 5 V backup rail to avoid battery drain while enabling fast transient response. Use Value: Maintains <50 nA max IR at 18 V, ensuring <1 µA total leakage across parallel devices - critical for >10-year meter battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | DO-214AC package (4.5 mm × 2.7 mm × 2.2 mm); 400 W rating; 100 A IPP (8/20 µs); higher VCL (36.6 V). | Larger footprint and 3.5× taller - unsuitable for ultra-thin automotive modules or dense IoT PCBs. | Select when board space allows larger package and higher surge margin is needed beyond 300 W. |
| TPSMF18A | SOD-123FL package; 400 W rating; 113 A IPP (8/20 µs); VCL = 32.4 V; same VRWM (18 V). | No AEC-Q101 qualification; 1.7 mm height - not approved for automotive under-hood use. | Choose for cost-sensitive industrial power supplies where automotive qualification is unnecessary. |
Compared with SMAJ18A and TPSMF18A, PTVS18VU1UPAZ delivers identical clamping voltage (32 V) in a 0.65 mm ultra-thin AEC-Q101-qualified package - uniquely balancing automotive reliability, space constraints, and precise voltage limiting for next-gen compact electronics.
Availability
PTVS18VU1UPAZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC power inputs, USB-C power delivery ports, and smart meter battery backup lines requiring stable component supply across extended product lifecycles.
Supply support for PTVS18VU1UPAZ 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions with emphasis on automotive and industrial applications.
PTVS18VU1UPAZ belongs to Nexperia's AEC-Q101-qualified TVS diode portfolio, engineered specifically for robust, space-efficient overvoltage protection in harsh-environment automotive and industrial power systems.
FAQ
What is the maximum junction temperature for continuous operation?
The absolute maximum junction temperature (Tj) is 150 °C, verified per IEC 60134 limiting values. Continuous operation must remain within derated power limits defined by ambient temperature and PCB thermal design - thermal resistance from junction to board (RθJB) is 35 K/W per datasheet characterization.
Can PTVS18VU1UPAZ be used for bidirectional protection?
No - it is strictly unidirectional. Pins 1 and 2 are anodes; pin 3 is cathode. Reverse polarity (cathode-to-anode) bias yields only leakage current (≤50 nA), with no clamping action. For bidirectional protection, use PTVS18VU1UPAZ's complementary part PTVS18VV1UPAZ (symmetrical dual-diode configuration).
How does the dual-anode (pins 1 & 2) configuration improve performance?
The dual-anode layout halves effective bond wire inductance and doubles current-carrying cross-section versus single-anode equivalents. This reduces voltage overshoot during fast-rising transients (e.g., ESD) and improves thermal distribution - confirmed by TLP testing showing <1.5 Ω dynamic resistance at 10 A.
Is the DFN2020-3 package compatible with standard reflow profiles?
Yes - the SOT1061 package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260 °C. Recommended solder paste stencil aperture is 0.4 mm × 1.1 mm per pad, with 0.25 mm thickness, matching the footprint in Figure 13 of the datasheet.
PTVS18VU1UPAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- 3-PowerUDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V (Max)
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-HUSON (2x2)
PTVS18VU1UPAZ FAQ
1.How can I place an order for PTVS18VU1UPAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS18VU1UPAZ 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 PTVS18VU1UPAZ reliable?
The price and inventory of PTVS18VU1UPAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS18VU1UPAZ is usually 5 days.
3.What payment methods are accepted for PTVS18VU1UPAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS18VU1UPAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS18VU1UPAZ?
PTVS18VU1UPAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS18VU1UPAZ 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 PTVS18VU1UPAZ?
For technical support, including PTVS18VU1UPAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS18VU1UPAZ requirements.
6.How does Aetrix verify that PTVS18VU1UPAZ is sourced from the original manufacturer or authorized distributors?
All PTVS18VU1UPAZ 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 PTVS18VU1UPAZ meets industry standards.
7.What is the process for return or replacement of PTVS18VU1UPAZ?
All PTVS18VU1UPAZ units undergo pre-shipment inspection (PSI). If there is an issue with PTVS18VU1UPAZ, 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 PTVS18VU1UPAZ part is unused and in its original packaging.
Return procedure for PTVS18VU1UPAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS18VU1UPAZ Tags
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