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Nexperia USA Inc. PTVS20VS1UR-QX
- Part No.:
- PTVS20VS1UR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS20VS1UR-QX.pdf
- Description:
- PTVS20VS1UR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:8,868
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Product details
Overview
PTVS20VS1UR-Q from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) diode in SOD123W (CFP3) package, designed for automotive-grade overvoltage protection. It features 20 V reverse standoff voltage (VRWM), 22.2–24.5 V breakdown voltage (VBR), 32.4 A peak pulse current (IPPM), and clamps transients to ≤32.4 V at rated surge. Used in 12 V automotive power rails to suppress load dump and ISO 7637-2 pulses.
For engineers reviewing the PTVS20VS1UR-Q datasheet, PTVS20VS1UR-Q pinout, PTVS20VS1UR-Q application, or PTVS20VS1UR-Q equivalent, key selection criteria include VRWM matching system nominal voltage, VCL margin relative to IC absolute maximum ratings, AEC-Q101 qualification status, and SOD123W thermal resistance (Rth(j-sp) = 18 K/W) for PCB layout optimization.
Technical Context
This unidirectional TVS operates as a clamping device in parallel with protected circuitry, triggering when transient voltage exceeds its breakdown threshold (VBR ≈ 23.35 V typ). Its low 1 mm profile and 2.6 mm × 1.7 mm footprint enable placement near connectors or ECUs where board space is constrained.
It complies with IEC 61643-321 (10/1000 μs waveform) and withstands 30 kV ESD per IEC 61000-4-2 (contact/air), while maintaining IRM ≤ 0.1 μA at VRWM - critical for low-power always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 20 V - matches nominal 12 V automotive systems with sufficient margin above operating voltage to avoid leakage during normal operation |
| VBR (min/typ/max) | 22.2 / 23.35 / 24.5 V - defines precise clamping onset; typ value used for worst-case transient analysis |
| VCL @ IPPM | 32.4 V - maximum clamped voltage during 400 W surge, ensuring downstream ICs (e.g., CAN transceivers) remain below 36 V abs max rating |
| IPPM | 32.4 A - peak current capability under 10/1000 μs pulse, sufficient for ISO 7637-2 Pulse 1 (−100 V, 2 Ω, 50 ms) |
| IRM | ≤ 0.1 μA @ VRWM - ultra-low leakage preserves battery life in always-on vehicle networks |
| Rth(j-sp) | 18 K/W - junction-to-solder-point thermal resistance enables effective heat transfer to copper pour on FR4 PCB |
| AEC-Q101 | Qualified - certified for automotive use including temperature cycling, HBM ESD (8 kV), and mechanical stress testing |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat leads, 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); marking bar identifies this terminal - polarity must match forward-biased clamping direction |
| 2 (A) | Anode | Connected to ground reference plane; low-inductance ground path essential for effective transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power rating | Enables robust suppression of high-energy transients like load dump without thermal runaway |
| 1 mm package height | Allows integration into low-profile automotive modules (e.g., body control units, sensor nodes) with tight Z-axis constraints |
| AEC-Q101 qualification | Validates reliability across −55 °C to +150 °C ambient, including temperature cycling and mechanical shock |
| 30 kV ESD immunity | Meets stringent automotive ESD requirements for assembly-line handling and in-vehicle electrostatic events |
| Low Rth(j-sp) = 18 K/W | Supports sustained surge duty cycles by efficiently transferring heat from junction to solder joint on PCB |
Applications
| Automotive Power Rail Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply input of automotive ECUs against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector entry point to clamp transients before they reach LDOs, microcontrollers, or CAN transceivers. Use Value: Limits clamped voltage to 32.4 V, staying within 36 V absolute maximum rating of common automotive PMICs and interface ICs. | Use Scenario: Safeguarding BCM power inputs exposed to battery disconnection/reconnection events and alternator load dump surges. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor with fast response (<1 ps) to divert surge energy to chassis ground. Use Value: AEC-Q101 qualification ensures operation over full automotive temperature range (−40 °C to +125 °C ambient) without parameter drift. |
| Infotainment System USB Port Protection | ADAS Camera Power Line Protection |
Use Scenario: Guarding 5 V USB VBUS lines in head units against ESD and cable-induced transients during hot-plug events. IC Role / Device Role / Timing Role: Low-leakage (≤0.1 μA) TVS placed upstream of USB power switches to prevent false overcurrent trips. Use Value: 30 kV contact ESD rating eliminates need for additional discrete ESD protection, reducing BOM count. | Use Scenario: Securing 12 V power feed to radar/camera modules mounted near engine compartments subject to severe electrical noise. IC Role / Device Role / Timing Role: High-reliability clamping device with 150 °C junction rating, enabling placement near heat sources without derating. Use Value: 1 mm height allows placement beneath compact camera housings where vertical clearance is limited to <1.5 mm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-Q | Same VRWM (20 V), but lower PPPM (400 W vs. 400 W), higher VCL (34.0 V), and SMA package (higher Rth(j-a)) | Less suitable for space-constrained automotive modules due to larger SMA footprint and 2.2 mm height | Select if existing SMA footprint is fixed and thermal performance is less critical than board area |
| TPSMD20H | Higher VRWM tolerance (20 V ±5%), same VCL (32.4 V), but not AEC-Q101 qualified and larger SMC package | Not approved for automotive safety-critical systems; requires requalification for OEM deployment | Consider only for industrial or non-automotive applications where AEC-Q101 is not mandated |
Compared with SMAJ20A-Q and TPSMD20H, PTVS20VS1UR-Q delivers superior board-area efficiency (SOD123W vs. SMA/SMC), guaranteed automotive qualification, and lower thermal resistance - making it optimal for next-generation compact, high-reliability vehicle electronics.
Availability
PTVS20VS1UR-Q is available at Aetrix Electronics and suitable for automotive power rail protection, body control module design, and ADAS camera power conditioning requiring stable component supply and long-term lifecycle support.
Supply support for PTVS20VS1UR-Q 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 logic, discrete, and MOSFET solutions, with deep expertise in automotive-grade components.
The PTVSxS1UR-Q series belongs to Nexperia's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in harsh automotive environments - emphasizing low profile, high surge capability, and zero maintenance reliability.
FAQ
What is the maximum clamping voltage of PTVS20VS1UR-Q under rated surge conditions?
The clamping voltage (VCL) is 32.4 V at 32.4 A peak pulse current (IPPM), measured per IEC 61643-321 10/1000 μs waveform. This value is guaranteed across the full operating temperature range (−55 °C to +150 °C junction), ensuring consistent protection margin for downstream 36 V-rated ICs in automotive applications.
Does PTVS20VS1UR-Q require orientation-specific PCB layout?
Yes - the cathode (pin 1, marked by bar) must be connected to the protected line (e.g., 12 V rail), and the anode (pin 2) to ground. Reversing polarity disables clamping functionality, leaving circuits unprotected. The SOD123W footprint in Figure 4 specifies exact pad dimensions and solder mask openings to ensure reliable mounting and thermal conduction.
How does the 1 mm package height impact thermal performance?
The 1 mm height enables direct thermal coupling to large copper pours via the cathode pad, achieving Rth(j-sp) = 18 K/W - significantly lower than taller packages like SMA (Rth(j-sp) ≈ 35 K/W). This allows faster heat dissipation during repetitive surges, supporting higher duty-cycle operation in engine bay applications without derating.
Is PTVS20VS1UR-Q compatible with lead-free reflow soldering processes?
Yes - it is qualified for standard lead-free reflow profiles (JEDEC J-STD-020), with peak temperature up to 260 °C. The CFP3 (SOD123W) package uses matte tin plating and passes MSL1 classification, eliminating moisture sensitivity concerns. Recommended stencil thickness is 0.1 mm for optimal solder paste volume control.
PTVS20VS1UR-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-123W
- Series:
- PTVSxS1UR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V (Max)
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 12.3A
- Power - Peak Pulse:
- 400W
- 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:
- SOD-123W
PTVS20VS1UR-QX FAQ
1.How can I place an order for PTVS20VS1UR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS20VS1UR-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 PTVS20VS1UR-QX reliable?
The price and inventory of PTVS20VS1UR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS20VS1UR-QX is usually 5 days.
3.What payment methods are accepted for PTVS20VS1UR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS20VS1UR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS20VS1UR-QX?
PTVS20VS1UR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS20VS1UR-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 PTVS20VS1UR-QX?
For technical support, including PTVS20VS1UR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS20VS1UR-QX requirements.
6.How does Aetrix verify that PTVS20VS1UR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS20VS1UR-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 PTVS20VS1UR-QX meets industry standards.
7.What is the process for return or replacement of PTVS20VS1UR-QX?
All PTVS20VS1UR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS20VS1UR-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 PTVS20VS1UR-QX part is unused and in its original packaging.
Return procedure for PTVS20VS1UR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS20VS1UR-QX Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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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
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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