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Nexperia USA Inc. PTVS51VS1UR,115
- Part No.:
- PTVS51VS1UR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS51VS1UR,115.pdf
- Description:
- TVS DIODE 51VWM 82.4VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:985
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Product details
Overview
PTVS51VS1UR,115 from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for clamping transient overvoltages on DC power rails. It features a 51 V reverse standoff voltage (VRWM), 62.7 V maximum clamping voltage (VCL) at 82.4 A peak pulse current (IPPM), and 0.001 µA reverse leakage at VRWM - optimized for industrial power supply protection with 1 mm profile and AEC-Q101 qualification.
For engineers reviewing the PTVS51VS1UR,115 datasheet, PTVS51VS1UR,115 pinout, PTVS51VS1UR,115 application, or PTVS51VS1UR,115 equivalent, key selection criteria include clamping performance under IEC 61643-321 10/1000 µs waveform, thermal resistance to solder point (18 K/W), junction temperature limit (150 °C), and compatibility with surface-mounted PCB layouts requiring minimal board area.
Technical Context
This unidirectional TVS operates as a silicon avalanche diode, triggering conduction when reverse voltage exceeds its 51 V standoff threshold and clamping transients to ≤62.7 V at 82.4 A. Its response time is sub-nanosecond, enabling suppression of fast ESD and surge events per IEC 61000-4-2 (30 kV contact discharge) and ISO 7637-2.
The device uses a planar passivated junction structure in a thermally enhanced SOD123W package, achieving 220 K/W junction-to-ambient thermal resistance on standard FR4 and 18 K/W to solder point - critical for sustained surge handling in compact industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 51 V - maximum continuous reverse operating voltage before clamping begins |
| VCL @ IPPM | 62.7 V at 82.4 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power rating per IEC 61643-321, defining surge energy absorption capacity |
| IRM | 0.001 µA at VRWM - ultra-low leakage ensures minimal standby power loss in battery-backed systems |
| Rth(j-sp) | 18 K/W - thermal resistance from junction to cathode solder point, enabling high-reliability mounting on copper pads |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2) - supports robust front-end protection without external shielding |
Pinout & Package
PTVS51VS1UR,115 is housed in a SOD123W (CFP3) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, with flat leads and cathode-marking bar. The package enables automated placement and reflow soldering per JEDEC J-STD-020, and provides low-profile integration into space-constrained power rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +12 V rail); marking bar identifies this terminal |
| 2 (A) | Anode | Connected to ground reference; forms unidirectional clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability (per revision history v.4), supporting deployment in harsh industrial environments |
| 1 mm package height | Enables stacking or tight clearance above PCB components, critical for stacked power modules and motor drivers |
| Low Rth(j-sp) | 18 K/W thermal resistance to solder point allows direct heat sinking via cathode pad, improving surge endurance |
| 400 W PPPM | Handles 10/1000 µs surges up to 82.4 A without degradation - sufficient for IEC 61000-4-5 Level 4 (4 kV line-to-earth) |
Applications
| Industrial Power Supply Protection | Programmable Logic Controller (PLC) I/O Modules |
|---|---|
|
Use Scenario: Protecting 24 V DC input rails in DIN-rail mounted power supplies against lightning-induced surges and switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground, clamping transients within 1 ns to prevent damage to upstream rectifiers and downstream DC-DC controllers. Use Value: 62.7 V clamping voltage ensures MOSFET gate drivers and microcontrollers remain below absolute maximum ratings during 4 kV surge events. |
Use Scenario: Safeguarding digital input channels in modular PLC backplanes exposed to field-wiring induced transients. IC Role / Device Role / Timing Role: TVS installed at connector entry point, shunting fast ESD pulses (≥30 kV) before they reach optocoupler inputs or level-shifting buffers. Use Value: 0.001 µA leakage prevents false triggering of 24 V sink inputs, while 400 W rating sustains repeated 10/1000 µs surges without parameter drift. |
| Motor Drive DC Bus Protection | Factory Automation Sensor Interface |
|
Use Scenario: Clamping commutation spikes on 48 V DC bus lines feeding brushless motor inverters in servo drives. IC Role / Device Role / Timing Role: Mounted directly across bus terminals to suppress inductive kickback from IGBT gate drivers and freewheeling diodes. Use Value: 18 K/W junction-to-solder-point thermal resistance enables effective heat dissipation into copper pour, maintaining clamping stability during burst-mode operation. |
Use Scenario: Shielding 5 V or 12 V analog sensor supply lines (e.g., pressure, temperature transmitters) in noisy factory floor environments. IC Role / Device Role / Timing Role: Low-leakage TVS placed adjacent to LDO regulator input to absorb coupling noise from nearby VFDs and welding equipment. Use Value: 51 V VRWM avoids interference with normal 24 V loop-powered sensor operation while clamping >100 V transients to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | DO-214AA package (4.5 mm × 3.9 mm × 2.3 mm); 51 V VRWM; 400 W PPPM; 83.3 V VCL @ 43.5 A | Larger footprint and higher clamping voltage reduce suitability for space-constrained 24 V industrial modules | Prefer PTVS51VS1UR,115 where board area < 5 mm² is required and clamping voltage margin is critical |
| SMCJ51A | DO-214AB package (7.1 mm × 6.2 mm × 2.6 mm); 51 V VRWM; 1500 W PPPM; 84.5 V VCL @ 178 A | Higher power rating but 3× larger size and 21.8 V higher clamping voltage limit use in low-voltage logic protection | Choose SMCJ51A only for high-energy surges (>100 A) where PCB real estate permits and system can tolerate 84.5 V clamping |
Compared with SMBJ51A and SMCJ51A, PTVS51VS1UR,115 delivers identical 51 V standoff and 400 W surge rating in a 70% smaller footprint and achieves 21.8 V lower clamping voltage - making it optimal for modern compact industrial electronics where layout density and voltage margin are design-critical.
Availability
PTVS51VS1UR,115 is available at Aetrix Electronics and suitable for industrial power supply protection, programmable logic controller (PLC) I/O modules, and motor drive DC bus protection requiring stable component supply and long-term manufacturability.
Supply support for PTVS51VS1UR,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices, with leadership in efficiency, miniaturization, and automotive-grade reliability.
PTVS51VS1UR,115 belongs to the PTVSxS1UR series - engineered specifically for high-density, high-reliability transient suppression in industrial and automotive-qualified power systems, emphasizing low-profile packaging and precise clamping control.
FAQ
What is the maximum clamping voltage of PTVS51VS1UR,115 under standard test conditions?
The maximum clamping voltage (VCL) is 62.7 V at 82.4 A peak pulse current (IPPM), measured using the IEC 61643-321 10/1000 µs current waveform at Tj = 25 °C. This value ensures downstream 60 V-rated components remain within safe operating limits during surge events.
Is PTVS51VS1UR,115 qualified for automotive applications?
Yes - per the revision history (v.4, December 2025), PTVS51VS1UR,115 is explicitly listed among the 33 types granted AEC-Q101 qualification. However, final system-level automotive compliance requires validation per vehicle manufacturer requirements and application-specific stress testing.
How does the SOD123W package affect thermal performance compared to larger TVS packages?
The SOD123W package achieves 18 K/W junction-to-solder-point thermal resistance - significantly lower than DO-214AA (SMB) or DO-214AB (SMC) equivalents - due to its optimized cathode tab geometry and direct thermal path to PCB copper, enabling better sustained surge handling in confined layouts.
Can PTVS51VS1UR,115 be used in bidirectional protection configurations?
No - PTVS51VS1UR,115 is a unidirectional TVS diode with anode and cathode terminals. Bidirectional protection requires either two devices in series opposition or a dedicated bidirectional TVS (e.g., PTVS51VS1UR,115's counterpart PTVS51VS1UR,115 is not bidirectional; no such variant exists in this series).
PTVS51VS1UR,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-123W
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 51V
- 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,115 FAQ
1.How can I place an order for PTVS51VS1UR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS51VS1UR,115 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,115 reliable?
The price and inventory of PTVS51VS1UR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS51VS1UR,115 is usually 5 days.
3.What payment methods are accepted for PTVS51VS1UR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS51VS1UR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS51VS1UR,115?
PTVS51VS1UR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS51VS1UR,115 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,115?
For technical support, including PTVS51VS1UR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS51VS1UR,115 requirements.
6.How does Aetrix verify that PTVS51VS1UR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS51VS1UR,115 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,115 meets industry standards.
7.What is the process for return or replacement of PTVS51VS1UR,115?
All PTVS51VS1UR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS51VS1UR,115, 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,115 part is unused and in its original packaging.
Return procedure for PTVS51VS1UR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS51VS1UR,115 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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