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Nexperia USA Inc. PTVS18VZ1USKYL
- Part No.:
- PTVS18VZ1USKYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
PTVS18VZ1USKYL.pdf
- Description:
- TVS DIODE 18VWM 32.8VC DSN1608-2
- Quantity:
- Payment:
- Shipping:
Inventory:8,835
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Product details
Overview
PTVS18VZ1USK from Nexperia is a unidirectional transient voltage suppressor (TVS) diode in a DSN1608-2 (SOD964) leadless package, designed for ESD and surge protection of low-voltage signal/power lines in space-constrained mobile electronics. It delivers 18 V reverse standoff voltage, 41 A peak pulse current (8/20 µs), 1800 W peak pulse power, 0.17 Ω dynamic resistance, and 0.1 nA reverse leakage at 18 V - enabling robust clamping in battery-powered USB, display, and sensor interfaces.
For engineers reviewing the PTVS18VZ1USK datasheet, PTVS18VZ1USK pinout, PTVS18VZ1USK application, or PTVS18VZ1USK equivalent, this device is selected for ultra-low-profile (<0.29 mm height), high-power-density TVS protection in 5 V–12 V rail and data-line applications where board space and ESD immunity (±30 kV contact/air) are critical constraints.
Technical Context
This unidirectional TVS operates as a clamping device between anode (pin 2) and cathode (pin 1), triggering at ~20.5 V breakdown (10 mA test) and limiting transients to ≤44 V at 41 A (8/20 µs). Its 290 pF capacitance at 0 V bias ensures minimal signal distortion on high-speed lines like USB 2.0 or MIPI D-PHY.
The DSN1608-2 package enables direct integration into compact RF front-end modules and PMIC output rails, with thermal performance supporting continuous operation up to 125 °C ambient and junction temperatures to 150 °C under transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 18 V - Maximum continuous reverse operating voltage before leakage exceeds 200 nA; sets safe upper limit for protected 12 V or 15 V supply rails. |
| VBR (min) | 20 V - Minimum breakdown voltage at 10 mA; guarantees reliable turn-on before downstream ICs (e.g., USB PHY, LDOs) reach absolute max ratings. |
| VCL @ 41 A | ≤44 V - Clamping voltage during 8/20 µs surge; defines worst-case overvoltage seen by protected circuitry under IEC 61000-4-5 Level 4 stress. |
| Rdyn | 0.17 Ω - Low dynamic resistance ensures rapid voltage collapse during fast transients, minimizing energy dissipation in the diode and reducing thermal stress. |
| Cd | 290 pF - Diode capacitance at 0 V bias; compatible with <100 Mbps signal integrity requirements in USB 2.0, I²C, and GPIO protection. |
| ESD Rating | ±30 kV - IEC 61000-4-2 contact/air discharge rating; meets industrial and consumer handheld ESD immunity requirements without external shielding. |
| Package | DSN1608-2 (SOD964) - 1.6 × 0.8 × 0.29 mm footprint; enables placement directly at connector or IC pin for shortest possible protection path. |
Pinout & Package
DSN1608-2 is a 2-terminal, leadless surface-mount package with 0.6 mm pitch and cathode marked by a bar on the top surface. Body dimensions: 1.6 mm × 0.8 mm × 0.29 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to system ground or lower-potential rail; polarity must match unidirectional clamping direction (anode-to-rail, cathode-to-ground). |
| 2 | Anode (A) | Connected to line being protected (e.g., USB VBUS, display power, sensor supply); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile | 0.29 mm height enables integration beneath shields or in stacked PCB assemblies common in smartphones and wearables. |
| High surge capability | 1800 W peak pulse power (8/20 µs) supports repeated exposure to lightning-induced surges in portable chargers and docking stations. |
| Low dynamic resistance | 0.17 Ω minimizes clamping voltage overshoot during fast-rising ESD events (<1 ns rise time), improving protection margin for sensitive analog inputs. |
| Low leakage | 0.1 nA at 18 V reduces standby current drain in always-on battery circuits such as real-time clocks or BLE radio power domains. |
| Small-footprint SOD964 | 1.6 × 0.8 mm body allows placement within 1 mm of connectors or IC pads - critical for maintaining impedance control and minimizing inductance in high-frequency protection paths. |
Applications
| USB Power Line Protection | Display Power Rail Protection |
|---|---|
|
Use Scenario: Protecting VBUS line in USB-C receptacles against hot-plug surges and ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBUS and GND, triggered only during overvoltage events to shunt current away from USB controller and power switch. Use Value: Limits VBUS overshoot to ≤44 V during 41 A 8/20 µs surge, preventing latch-up or gate oxide damage in 5 V-rated USB PD controllers. |
Use Scenario: Safeguarding 3.3 V or 5 V backlight and panel power supplies in OLED/LCD modules against ESD coupling from flex cables. IC Role / Device Role / Timing Role: Standoff protection device mounted at display connector, conducting transient energy to ground before it reaches DC-DC converter feedback nodes or LED driver ICs. Use Value: 290 pF capacitance avoids signal integrity degradation on 100 kHz PWM dimming lines while delivering ±30 kV ESD immunity per IEC 61000-4-2. |
| Sensor Interface Protection | PMIC Output Protection |
|
Use Scenario: Shielding I²C/SPI lines and supply pins of MEMS accelerometers, gyroscopes, and environmental sensors in handheld devices. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used across VDD and SDA/SCL lines to clamp both positive and negative transients via proper grounding topology. Use Value: 0.1 nA leakage preserves microamp-level sleep current budgets; 0.29 mm height permits placement adjacent to 2.0 mm × 2.0 mm sensor packages without interference. |
Use Scenario: Preventing voltage spikes on regulated outputs (e.g., 1.8 V core, 3.3 V I/O) of power management ICs during load dump or switching noise events. IC Role / Device Role / Timing Role: Secondary protection stage downstream of internal PMIC overvoltage protection, absorbing residual energy that bypasses internal clamps. Use Value: 1800 W peak power rating handles short-duration inductive kickback from buck converter inductors, ensuring PMIC output stability during dynamic load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PTVS18VZ1UR | Same electrical specs but in larger SOD-123FL package (2.7 × 1.7 × 1.0 mm); 0.45 mm height; 1.2 nA IR at 18 V. | Higher profile limits use in ultra-thin mobile designs; better thermal mass suits higher average power dissipation. | Select when board layout allows >1 mm height and long-term reliability under repetitive surges is prioritized over size. |
| SMAJ18A | DO-214AC package (4.5 × 2.7 × 2.2 mm); 18 V VRWM; 40 A IPPM; 400 W PPPM; 650 pF Cd. | Lower surge rating and higher capacitance restrict use to non-high-speed, non-portable applications like industrial PLC I/O modules. | Choose only for cost-sensitive, non-mobile applications where footprint and capacitance are not design constraints. |
Compared with PTVS18VZ1USK, PTVS18VZ1UR trades miniaturization for improved thermal handling, while SMAJ18A sacrifices size and bandwidth for legacy compatibility and lower unit cost - making the DSN1608-2 variant optimal for next-gen mobile power and interface protection.
Availability
PTVS18VZ1USK is available at Aetrix Electronics and suitable for USB power line protection, display power rail protection, sensor interface protection, and PMIC output protection requiring stable component supply and consistent DSN1608-2 packaging across production batches.
Supply support for PTVS18VZ1USK 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 manufacturing rooted in process technology leadership and automotive-grade quality systems.
The PTVS series targets ultra-compact, high-efficiency transient suppression for mobile and portable electronics, emphasizing low capacitance, low leakage, and sub-0.3 mm height to meet stringent form factor and ESD compliance demands.
FAQ
What is the maximum clamping voltage of PTVS18VZ1USK at 41 A?
The maximum clamping voltage (VCL) is 44 V under 8/20 µs pulse conditions at 41 A peak pulse current, measured from pin 1 (cathode) to pin 2 (anode) at 25 °C ambient. This value ensures protected circuits remain below typical 48 V absolute maximum ratings for USB PD and display drivers.
Can PTVS18VZ1USK be used for bidirectional protection?
No - PTVS18VZ1USK is a unidirectional TVS diode optimized for clamping positive transients only. For bidirectional protection, two devices must be placed in series opposition or a dedicated bidirectional part like PTVS3V3S1UR must be selected.
What is the recommended PCB layout for optimal ESD performance?
Place PTVS18VZ1USK within 3 mm of the protected connector or IC pin, route the anode directly to the line and cathode to a solid ground plane using minimum-length traces, and avoid vias in the protection path. Use the reflow footprint from Figure 17 (1.8 × 2.0 mm solder pad area) for reliable attachment.
Does PTVS18VZ1USK meet automotive AEC-Q200 requirements?
No - PTVS18VZ1USK is not AEC-Q200 qualified. It is specified for industrial and consumer mobile applications only. For automotive use, Nexperia's AUTOMOTIVE-grade equivalents such as PTVS18VZ1USK-Q require separate qualification documentation and are subject to different screening and traceability protocols.
PTVS18VZ1USKYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- 0603 (1608 Metric)
- 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:
- 32.8V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 210W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 290pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DSN1608-2
PTVS18VZ1USKYL FAQ
1.How can I place an order for PTVS18VZ1USKYL through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS18VZ1USKYL 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 PTVS18VZ1USKYL reliable?
The price and inventory of PTVS18VZ1USKYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS18VZ1USKYL is usually 5 days.
3.What payment methods are accepted for PTVS18VZ1USKYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS18VZ1USKYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS18VZ1USKYL?
PTVS18VZ1USKYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS18VZ1USKYL 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 PTVS18VZ1USKYL?
For technical support, including PTVS18VZ1USKYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS18VZ1USKYL requirements.
6.How does Aetrix verify that PTVS18VZ1USKYL is sourced from the original manufacturer or authorized distributors?
All PTVS18VZ1USKYL 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 PTVS18VZ1USKYL meets industry standards.
7.What is the process for return or replacement of PTVS18VZ1USKYL?
All PTVS18VZ1USKYL units undergo pre-shipment inspection (PSI). If there is an issue with PTVS18VZ1USKYL, 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 PTVS18VZ1USKYL part is unused and in its original packaging.
Return procedure for PTVS18VZ1USKYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS18VZ1USKYL Tags
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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