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Nexperia USA Inc. PTVS51VS1UR-QX
- Part No.:
- PTVS51VS1UR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS51VS1UR-QX.pdf
- Description:
- PTVS51VS1UR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:3,952
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Product details
Overview
PTVS51VS1UR-QX from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for automotive-grade overvoltage protection on DC power rails. It features 51 V reverse standoff voltage (VRWM), 62.7 V maximum breakdown voltage (VBR), 82.4 A peak pulse current (IPPM), and 0.001 µA reverse leakage at VRWM - deployed in engine control units to clamp load-dump transients.
For engineers reviewing the PTVS51VS1UR-QX datasheet, PTVS51VS1UR-QX pinout, PTVS51VS1UR-QX application, or PTVS51VS1UR-QX equivalent, key selection criteria include clamping voltage (VCL = 82.4 V), AEC-Q101 qualification, low-profile 1 mm height, and compatibility with automated SMT reflow processes per JEDEC J-STD-020.
Technical Context
This unidirectional TVS diode operates as a clamping device in series with the protected line, conducting only during overvoltage events exceeding its breakdown threshold. Its silicon avalanche structure delivers precise VBR tolerance (±5% typical), fast response time (<1 ns), and stable performance across −55 °C to +150 °C junction temperature range.
The device complies with IEC 61643-321 (10/1000 µs waveform) and achieves 30 kV ESD immunity (IEC 61000-4-2 contact/air discharge). Thermal resistance from junction to solder point is 18 K/W, enabling reliable operation under high-energy surge conditions without derating in standard FR4 PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 51 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 56.7 V - Guaranteed minimum breakdown voltage at 1 mA test current |
| VCL @ IPPM | 82.4 V - Clamped voltage at 82.4 A peak pulse current (10/1000 µs) |
| PPPM | 400 W - Peak pulse power handling capability per IEC 61643-321 |
| IRM | 0.001 µA - Reverse leakage current at VRWM, ensuring minimal standby power loss |
| Rth(j-sp) | 18 K/W - Junction-to-solder-point thermal resistance for accurate thermal design |
| ESD Rating | 30 kV - Contact and air discharge immunity per IEC 61000-4-2 |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile optimized for space-constrained automotive PCBs. Cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., battery rail); conducts during positive transient events |
| 2 (A) | Anode | Connected to ground reference; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics |
| Low profile (1 mm height) | Enables placement under connectors or in tight board-to-board spacing |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V/100 ms |
| 0.001 µA IRM at VRWM | Minimizes quiescent current draw in always-on vehicle subsystems |
| SOD123W footprint | Compatible with standard 0805 reflow profiles and wave soldering footprints |
Applications
| Engine Control Unit (ECU) Power Rail | Automotive Infotainment Display Supply |
|---|---|
Use Scenario: Protects 12 V supply input of engine control modules against ISO 7637-2 load-dump transients (up to 120 V). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and local DC/DC input. Use Value: Limits transient voltage to ≤82.4 V, preventing damage to downstream PMICs and microcontrollers rated for 65 V absolute max. | Use Scenario: Shields 5 V/3.3 V display backlight and interface rails from coupled noise in infotainment head units. IC Role / Device Role / Timing Role: Secondary-level TVS on regulated outputs after main DC/DC converter. Use Value: Suppresses fast-rising ESD events (≥30 kV) without affecting signal integrity on LVDS or FPD-Link interfaces. |
| Body Control Module (BCM) CAN Interface Protection | ADAS Camera Module Power Input |
Use Scenario: Guards CAN transceiver VCC supply against battery line disturbances during ignition switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on transceiver's power pin, upstream of local LDO. Use Value: Maintains <1 µA leakage to avoid LDO dropout while clamping surges within 1 ns response window. | Use Scenario: Secures 12 V input of rear-view camera modules exposed to harsh under-hood environments. IC Role / Device Role / Timing Role: First-line defense against load dump and jump-start transients before buck converter. Use Value: Withstands 50 A non-repetitive forward surge (IFSM) and maintains 150 °C Tj rating for extended thermal reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-Q | Same VRWM (51 V), but lower PPPM (400 W vs. SMAJ51A-Q's 400 W), higher VCL (85.5 V), larger SMA package (4.5 mm × 2.7 mm) | Not AEC-Q101 qualified; intended for industrial, not automotive use | Select when AEC-Q101 compliance is not required and board space allows larger footprint |
| TPSMD51A | Higher VRWM tolerance (±5% vs. ±5%), identical VCL (82.4 V), same SOD123W package, but only qualified to JESD22-A114 (not AEC-Q101) | Lacks automotive stress-test validation; limited to consumer/industrial designs | Choose if cost sensitivity outweighs automotive qualification requirements |
Compared with SMAJ51A-Q and TPSMD51A, PTVS51VS1UR-QX uniquely combines AEC-Q101 qualification, 1 mm profile, and verified 82.4 V clamping at 82.4 A - making it the only option validated for safety-critical 12 V rail protection in production vehicles.
Availability
PTVS51VS1UR-QX is available at Aetrix Electronics and suitable for automotive ECU power rail protection, infotainment system supply conditioning, and ADAS camera module surge suppression requiring stable component supply across multi-year production cycles.
Supply support for PTVS51VS1UR-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 global semiconductor expert focused on essential efficiency technologies - delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.
The PTVSxS1UR-Q series belongs to Nexperia's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in automotive power networks where compact size, low leakage, and repeatable clamping are mandatory.
FAQ
What is the maximum clamping voltage of PTVS51VS1UR-QX at its rated peak pulse current?
The maximum clamping voltage (VCL) is 82.4 V at 82.4 A peak pulse current (IPPM), measured under IEC 61643-321 10/1000 µs waveform conditions. This value ensures downstream 65 V-rated ICs remain within safe operating limits during load-dump events.
Does PTVS51VS1UR-QX support reflow soldering per JEDEC J-STD-020?
Yes - the SOD123W (CFP3) package is fully compatible with standard lead-free reflow profiles (peak temperature ≤260 °C, 25 s dwell). Nexperia provides validated footprint data (solder land: 1.2 mm × 2.1 mm, stencil thickness 0.1 mm) for optimal wetting and void control.
How does the 0.001 µA reverse leakage impact system-level power budget?
At 51 V VRWM and 0.001 µA IRM, the device draws just 51 nW of standby power - negligible in always-on automotive modules such as telematics or gateway ECUs where total quiescent current must stay below 100 µA.
Is PTVS51VS1UR-QX suitable for protecting CAN FD physical layer circuits?
No - this unidirectional TVS is intended for DC power rail protection, not data line protection. CAN FD requires bidirectional TVS devices with symmetric clamping (e.g., PUSB3FR4) to preserve signal integrity on differential pairs without introducing DC bias.
PTVS51VS1UR-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):
- 51V (Max)
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- 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
PTVS51VS1UR-QX FAQ
1.How can I place an order for PTVS51VS1UR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS51VS1UR-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 PTVS51VS1UR-QX reliable?
The price and inventory of PTVS51VS1UR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS51VS1UR-QX is usually 5 days.
3.What payment methods are accepted for PTVS51VS1UR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS51VS1UR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS51VS1UR-QX?
PTVS51VS1UR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS51VS1UR-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 PTVS51VS1UR-QX?
For technical support, including PTVS51VS1UR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS51VS1UR-QX requirements.
6.How does Aetrix verify that PTVS51VS1UR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS51VS1UR-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 PTVS51VS1UR-QX meets industry standards.
7.What is the process for return or replacement of PTVS51VS1UR-QX?
All PTVS51VS1UR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS51VS1UR-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 PTVS51VS1UR-QX part is unused and in its original packaging.
Return procedure for PTVS51VS1UR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS51VS1UR-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
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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