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Nexperia USA Inc. PTVS18VP1UP-QX
- Part No.:
- PTVS18VP1UP-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-128
- Datasheet:
-
PTVS18VP1UP-QX.pdf
- Description:
- PTVS18VP1UP-Q/SOD128/FLATPOWER
- Quantity:
- Payment:
- Shipping:
Inventory:3,947
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Product details
Overview
PTVS18VP1UP-QX from Nexperia is a unidirectional 600 W Transient Voltage Suppressor (TVS) in SOD128 (CFP5) package, designed for automotive-grade overvoltage protection at 18 V reverse standoff voltage (VRWM), with 21.0 V typical breakdown voltage (VBR), 29.2 V clamping voltage (VCL) at 20.5 A peak pulse current (IPPM), and AEC-Q101 qualification for under-hood power rail protection.
For engineers reviewing the PTVS18VP1UP-QX datasheet, PTVS18VP1UP-QX pinout, PTVS18VP1UP-QX application, or PTVS18VP1UP-QX equivalent, this device supports high-reliability transient suppression in 12 V/24 V automotive systems, offers 0.001 µA reverse leakage at VRWM, and delivers low-profile (1 mm height) surface-mount integration with cathode-anode polarity marking.
Technical Context
This unidirectional TVS diode operates as a clamping device: it remains high-impedance below VRWM = 18 V, then avalanches sharply at VBR ≈ 21.0 V to limit transients to VCL ≤ 29.2 V under 10/1000 µs IEC 61643-321 waveform. Its junction-to-solder-point thermal resistance is 12 K/W, enabling robust surge handling in compact PCB layouts.
Qualified per AEC-Q101, it sustains 100 A non-repetitive forward surge (IFSM), withstands ±30 kV ESD (IEC 61000-4-2), and maintains stable PPPM = 600 W across -55 °C to +150 °C ambient, with derating above 25 °C per Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPPM) | 600 W - Sustains 10/1000 µs surges without failure per IEC 61643-321 |
| Reverse Standoff Voltage (VRWM) | 18 V - Maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 21.0 V (typ) - Voltage at which device enters avalanche conduction at 1 mA |
| Clamping Voltage (VCL) | 29.2 V - Maximum voltage seen by protected circuit at IPPM = 20.5 A |
| Reverse Leakage (IRM) | 0.001 µA - Negligible standby current at VRWM, minimizing system power loss |
| ESD Rating | ±30 kV (contact/air) - Survives worst-case human-body and system-level ESD events |
| AEC-Q101 Qualified | Yes - Validated for automotive use including temperature cycling, humidity, and mechanical stress |
Pinout & Package
Package: SOD128 (CFP5), plastic surface-mounted, 2-terminal, 3.8 mm × 2.6 mm × 1.0 mm body, 4 mm pitch, with cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 12 V rail); clamps to ground when transient exceeds VBR |
| 2 (A) | Anode | Connected to system ground; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile | 1.0 mm max height enables placement under connectors or in space-constrained engine control units |
| Automotive-grade reliability | AEC-Q101 qualification ensures operation across -55 °C to +150 °C junction temperature range |
| High surge robustness | 600 W peak pulse power and 100 A IFSM support repeated load-dump and ISO 7637-2 pulses |
| Polarity identification | Visible cathode bar marking simplifies automated optical inspection (AOI) and manual assembly verification |
| Low thermal resistance | Rth(j-sp) = 12 K/W allows efficient heat transfer to solder pad, critical for sustained surge duty cycles |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Infotainment USB Port |
|---|---|
|
Use Scenario: Protecting 12 V supply input of engine control modules against ISO 7637-2 pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and LDO input. Use Value: Limits transient to ≤29.2 V, preventing damage to downstream 3.3 V/5 V regulators and microcontrollers. |
Use Scenario: Safeguarding USB 2.0 data lines and VBUS in head-unit applications exposed to cable ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (Cd < 100 pF) shunting ESD energy to chassis ground. Use Value: Withstands ±30 kV contact discharge while adding <0.5 pF parasitic capacitance to signal integrity. |
| Body Control Module (BCM) LIN Bus | ADAS Camera Power Rail |
|
Use Scenario: Protecting LIN transceiver power pins from battery transients during jump-start or alternator regulation faults. IC Role / Device Role / Timing Role: Standoff-rated TVS (VRWM = 18 V) placed upstream of LIN regulator. Use Value: Maintains <0.001 µA leakage at 13.5 V nominal, avoiding false wake-up or quiescent current violations. |
Use Scenario: Shielding 5 V or 12 V camera module power input from ignition noise and load dump in rear-view systems. IC Role / Device Role / Timing Role: High-power (600 W) TVS mounted near connector to intercept fast-rising transients. Use Value: Clamps 10/1000 µs surges to 29.2 V within nanoseconds, preserving image sensor and ISP functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PTVS18VP1UP,115 | Same electrical specs, but not AEC-Q101 qualified; industrial-grade only | Lacks automotive qualification; unsuitable for safety-critical or OEM production | Select only for non-automotive prototypes or cost-sensitive industrial designs |
| SMAJ18A-Q | Lower PPPM = 400 W; higher VCL = 32.4 V at same IPPM; SMA package (4.5 mm height) | Less surge margin; taller profile limits routing density in modern ECUs | Use where board height >1 mm is acceptable and 600 W rating is not required |
Compared with PTVS18VP1UP-QX, the PTVS18VP1UP,115 lacks automotive qualification and long-term reliability validation, while SMAJ18A-Q trades surge capacity and form factor for broader distributor availability-making the QX variant optimal for volume automotive production requiring both performance and compliance.
Availability
PTVS18VP1UP-QX is available at Aetrix Electronics and suitable for automotive ECU power protection, ADAS camera module hardening, and body control module surge suppression requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for PTVS18VP1UP-QX 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 leading semiconductor manufacturer specializing in high-performance, reliable discrete and logic devices, with global R&D and manufacturing facilities focused on automotive, industrial, and computing markets.
The PTVSxP1UP-Q series belongs to Nexperia's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in 12 V/24 V automotive power networks-including engine bays, infotainment, and ADAS subsystems.
FAQ
What is the maximum clamping voltage of PTVS18VP1UP-QX at its rated peak pulse current?
The clamping voltage (VCL) is 29.2 V maximum at IPPM = 20.5 A under 10/1000 µs waveform conditions. This value is measured per IEC 61643-321 and guarantees the protected circuit sees no more than 29.2 V during a full-rated surge event, ensuring compatibility with 3.3 V and 5 V downstream ICs.
Is PTVS18VP1UP-QX suitable for bidirectional transient protection?
No - PTVS18VP1UP-QX is a unidirectional TVS diode, intended only for DC or single-polarity circuits like automotive battery rails. It conducts only in reverse bias (cathode positive) and does not protect against negative-going transients on AC or bidirectional lines; a bidirectional variant such as PTVS18VU1UP-QX would be required instead.
How does the SOD128 package affect thermal performance in high-density PCB layouts?
The SOD128 (CFP5) package achieves Rth(j-sp) = 12 K/W via direct thermal coupling from the cathode tab to the PCB solder pad. Its 1 mm height and 2.6 mm width allow tight placement near connectors, while the low thermal resistance enables effective heat dissipation even with minimal copper area-critical for sustained surge duty in confined ECU modules.
Does PTVS18VP1UP-QX require external series impedance for optimal protection?
No external resistor is required for basic clamping function, but a series impedance (e.g., ferrite bead or small resistor) upstream improves energy sharing during fast transients and reduces di/dt stress on the TVS. The device is designed to operate directly across protected lines, with its low IRM (0.001 µA) ensuring negligible impact on normal operation.
PTVS18VP1UP-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-128
- Series:
- PTVSxP1UP
- 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):
- 20.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128/CFP5
PTVS18VP1UP-QX FAQ
1.How can I place an order for PTVS18VP1UP-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS18VP1UP-QX 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 PTVS18VP1UP-QX reliable?
The price and inventory of PTVS18VP1UP-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS18VP1UP-QX is usually 5 days.
3.What payment methods are accepted for PTVS18VP1UP-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS18VP1UP-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS18VP1UP-QX?
PTVS18VP1UP-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS18VP1UP-QX 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 PTVS18VP1UP-QX?
For technical support, including PTVS18VP1UP-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS18VP1UP-QX requirements.
6.How does Aetrix verify that PTVS18VP1UP-QX is sourced from the original manufacturer or authorized distributors?
All PTVS18VP1UP-QX 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 PTVS18VP1UP-QX meets industry standards.
7.What is the process for return or replacement of PTVS18VP1UP-QX?
All PTVS18VP1UP-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS18VP1UP-QX, 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 PTVS18VP1UP-QX part is unused and in its original packaging.
Return procedure for PTVS18VP1UP-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS18VP1UP-QX Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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