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Nexperia USA Inc. PTVS51VS1UTR-QX
- Part No.:
- PTVS51VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS51VS1UTR-QX.pdf
- Description:
- PTVS51VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:7,361
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Product details
Overview
PTVS51VS1UTR-QX from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature transient overvoltage protection in automotive power rails. It features VRWM = 51 V, VBR(min) = 56.7 V, VCL = 82.4 V at IPPM = 4.9 A (10/1000 µs), and operates up to Tj = 185 °C.
For engineers reviewing the PTVS51VS1UTR-QX datasheet, PTVS51VS1UTR-QX pinout, PTVS51VS1UTR-QX application, or PTVS51VS1UTR-QX equivalent, key selection criteria include clamping voltage under peak pulse current, thermal resistance to solder point (Rth(j-sp) = 18 K/W), AEC-Q101 qualification, and reverse leakage stability at 150 °C.
Technical Context
This TVS diode uses a planar silicon junction structure optimized for fast response (<1 ns) to ESD and surge transients per IEC 61643-321 (10/1000 µs). Its unidirectional configuration provides low clamping voltage during reverse-biased overvoltage events while maintaining <0.001 µA IRM at VRWM.
Thermal design is enabled by low-profile SOD123W packaging with direct cathode tab thermal path (Rth(j-sp) = 18 K/W) and AEC-Q101 qualification confirming robustness across -55 °C to +185 °C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 51 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin in 48 V automotive systems. |
| VBR (min) | 56.7 V - Breakdown voltage at 1 mA test current; ensures reliable turn-on above normal operating rail. |
| VCL @ IPPM | 82.4 V at 4.9 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress in load-dump scenarios. |
| PPPM | 400 W - Peak pulse power rating per IEC 61643-321; supports high-energy transients without degradation. |
| IRM | 0.001 µA - Reverse leakage at VRWM and 25 °C; minimizes quiescent power loss in always-on circuits. |
| Tj max | 185 °C - Maximum junction temperature; enables placement near hot components (e.g., power converters) without derating. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact); protects against human-body and system-level electrostatic discharge events. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height; flat lead profile optimized for automated placement and thermal conduction via cathode tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Marked side with bar; connects to protected line (e.g., 48 V rail); primary thermal path to PCB copper. |
| 2 (A) | Anode | Connects to ground reference; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and ESD stress per discrete semiconductor standard. |
| High-temperature operation | Rated for continuous operation at Tamb = 185 °C and Tj = 185 °C; no power derating required up to max ambient. |
| Low-profile SOD123W | 1.0 mm max height enables placement under shields or in space-constrained engine control units (ECUs). |
| Stable leakage at high Tj | IRM remains ≤0.1 µA even at Tj = 150 °C, ensuring minimal standby current in always-on vehicle networks. |
| Optimized thermal path | Rth(j-sp) = 18 K/W to cathode solder point enables efficient heat transfer to PCB copper without external heatsink. |
Applications
| Engine Control Unit (ECU) Power Input | ADAS Camera Module Supply Rail |
|---|---|
Use Scenario: Protection of 48 V input stage against ISO 7637-2 load dump pulses and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients within nanoseconds to limit voltage seen by DC-DC controller ICs. Use Value: VCL = 82.4 V ensures downstream 100 V-rated MOSFETs and regulators remain within safe operating area during 120 V/100 ms load dump events. |
Use Scenario: Guarding 12 V camera module supply against ESD from connector mating and cable discharge. IC Role / Device Role / Timing Role: Fast-response TVS shunts sub-100 ns ESD spikes before they reach image sensor and serializer ICs. Use Value: ±30 kV IEC 61000-4-2 rating prevents latch-up or damage in CMOS image sensors during factory handling and field service. |
| Electric Power Steering (EPS) Motor Driver | Onboard Charger (OBC) Auxiliary Supply |
Use Scenario: Suppressing inductive kickback from H-bridge gate drivers and motor phase switching. IC Role / Device Role / Timing Role: TVS absorbs repetitive 400 W surges generated during PWM commutation without thermal runaway. Use Value: 185 °C Tj rating allows mounting directly on motor driver PCB adjacent to power stages, eliminating remote placement compromises. |
Use Scenario: Safeguarding 24 V auxiliary supply feeding MCU, CAN transceivers, and fans in bidirectional OBC systems. IC Role / Device Role / Timing Role: Standoff voltage (51 V) accommodates 48 V battery float voltage while clamping 100 V+ surges from grid coupling. Use Value: Low IRM (<0.001 µA) avoids measurable current draw in sleep mode, preserving battery state-of-charge during vehicle parking. |
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 | Lower PPPM (400 W same), but higher VCL = 87.1 V at same IPPM; Rth(j-a) = 70 K/W vs. 18 K/W to solder point. | Less effective thermal management in high-density layouts; requires larger copper area for equivalent cooling. | Select when legacy footprint compatibility with SMA package is mandatory and thermal budget permits. |
| TPSMD51A | Same VRWM/VCL specs, but rated only to Tj = 150 °C; not AEC-Q101 qualified; Rth(j-sp) not specified. | Not suitable for under-hood automotive locations exceeding 150 °C ambient; lacks automotive reliability validation. | Acceptable for industrial power supplies where AEC-Q101 and 185 °C operation are not required. |
Compared with SMAJ51A-Q and TPSMD51A, PTVS51VS1UTR-QX delivers superior thermal performance (18 K/W to solder point), guaranteed automotive qualification, and stable leakage at extreme temperatures-enabling compact, high-reliability placement in next-generation 48 V automotive electronics.
Availability
PTVS51VS1UTR-QX is available at Aetrix Electronics and suitable for automotive power supply protection, ADAS camera modules, electric power steering systems, and onboard charger auxiliary supplies requiring stable component supply across extended temperature ranges.
Supply support for PTVS51VS1UTR-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, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The PTVSxS1UTR-Q series targets high-temperature transient suppression in automotive electronics, with design emphasis on AEC-Q101 compliance, ultra-low package height, and stable electrical parameters across -55 °C to +185 °C.
FAQ
What is the maximum clamping voltage for PTVS51VS1UTR-QX under a 10/1000 µs surge?
The clamping voltage VCL is 82.4 V at IPPM = 4.9 A for a 10/1000 µs waveform, measured per IEC 61643-321. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Does PTVS51VS1UTR-QX meet automotive qualification standards?
Yes, PTVS51VS1UTR-QX is fully qualified to AEC-Q101 for discrete semiconductors, including stress tests for temperature cycling, high-temperature reverse bias, and ESD (±30 kV contact discharge). It is recommended for use in automotive powertrain, chassis, and ADAS systems.
How does the SOD123W package improve thermal performance compared to SMA or SMB?
The SOD123W (CFP3) package features a dedicated cathode tab that achieves Rth(j-sp) = 18 K/W to the solder point-over 3× better than typical SMA packages (~70 K/W to ambient). This enables direct thermal coupling to PCB copper without thermal vias, critical for sustained surge duty in confined spaces.
Can PTVS51VS1UTR-QX be used in bidirectional configurations?
No, PTVS51VS1UTR-QX is a unidirectional TVS diode with anode and cathode terminals. It conducts only during reverse-biased overvoltage events. For bidirectional protection, two devices must be connected in series opposition, or a dedicated bidirectional part (e.g., PTVS51VS1UTR-Q) must be selected.
PTVS51VS1UTR-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-123W
- Series:
- PTVSxS1UTR
- 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 ~ 185°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
PTVS51VS1UTR-QX FAQ
1.How can I place an order for PTVS51VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS51VS1UTR-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 PTVS51VS1UTR-QX reliable?
The price and inventory of PTVS51VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS51VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS51VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS51VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS51VS1UTR-QX?
PTVS51VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS51VS1UTR-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 PTVS51VS1UTR-QX?
For technical support, including PTVS51VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS51VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS51VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS51VS1UTR-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 PTVS51VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS51VS1UTR-QX?
All PTVS51VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS51VS1UTR-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 PTVS51VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS51VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS51VS1UTR-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
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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