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Nexperia USA Inc. PTVS48VS1UR-QX
- Part No.:
- PTVS48VS1UR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS48VS1UR-QX.pdf
- Description:
- PTVS48VS1UR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
PTVS48VS1UR-Q from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) diode in SOD123W (CFP3) package, designed for automotive-grade overvoltage clamping on power rails and signal lines. It features VRWM = 48 V, VBR(min) = 53.3 V, VCL(max) = 77.4 V at IPPM = 5.2 A (10/1000 µs), and qualifies to AEC-Q101 for under-hood electronics protection.
For engineers reviewing the PTVS48VS1UR-Q datasheet, PTVS48VS1UR-Q pinout, PTVS48VS1UR-Q application, or PTVS48VS1UR-Q equivalent, key selection criteria include clamping voltage margin relative to system rail, peak pulse current handling under IEC 61643-321 waveform, thermal resistance to PCB copper area, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This unidirectional TVS operates as a reverse-biased avalanche clamp: it remains high-impedance below VRWM = 48 V and triggers into low-impedance conduction when transient voltage exceeds VBR(min) = 53.3 V. Its 10/1000 µs waveform rating (IEC 61643-321) defines energy absorption capability up to 400 W peak pulse power.
The device uses planar silicon junction technology with cathode-anode polarity marked by a bar on the SOD123W body. Thermal performance depends on PCB layout: Rth(j-a) ranges from 220 K/W (standard FR4) to 18 K/W (junction-to-solder-point), directly impacting sustained surge duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 48 V - Maximum continuous reverse operating voltage before leakage exceeds 0.1 µA; sets upper limit for protected line nominal voltage. |
| VBR (min) | 53.3 V - Minimum breakdown voltage at 1 mA test current; ensures reliable triggering above normal operating rail. |
| VCL (max) | 77.4 V - Maximum clamped voltage at IPPM = 5.2 A (10/1000 µs); determines worst-case stress on downstream ICs. |
| PPPM | 400 W - Peak pulse power rating per IEC 61643-321; defines single-event surge energy handling capacity. |
| IRM | 0.001 µA - Reverse leakage current at VRWM; negligible loading on 48 V supply during steady-state operation. |
| Rth(j-sp) | 18 K/W - Junction-to-solder-point thermal resistance; enables effective heat transfer to cathode pad for repeated surges. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - Robustness 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 leads, cathode marked by bar. Optimized for automated placement and reflow soldering on compact PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 48 V rail); marking bar identifies this terminal; carries full surge current during clamping. |
| 2 (A) | Anode | Connected to ground reference; completes conduction path during transient; requires low-inductance grounding for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested per Automotive Electronics Council standard for discrete semiconductors; validated for under-hood temperature cycling and humidity exposure. |
| Low-profile SOD123W | 1.0 mm max height enables use in space-constrained modules such as body control units and ADAS sensor housings. |
| 400 W peak pulse power | Handles high-energy transients like load dump (ISO 7637-2 Pulse 5a) without degradation when properly heatsinked. |
| 0.001 µA IRM at VRWM | Negligible standby current draw on 48 V systems, preserving battery life in always-on automotive subsystems. |
| ±30 kV ESD robustness | Withstands repeated contact and air-gap discharges per IEC 61000-4-2, reducing need for additional ESD protection stages. |
Applications
| Automotive Power Rail Protection | Industrial 48 V DC Distribution |
|---|---|
|
Use Scenario: Protecting 48 V battery-fed ECUs (e.g., electric power steering, HVAC compressors) from ISO 7637-2 load dump transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between 48 V input and chassis ground, triggered within nanoseconds of overvoltage onset. Use Value: Limits voltage to ≤77.4 V during 400 W surges, preventing damage to 60 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives powered from centralized 48 V industrial power supplies. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on main DC input, coordinated with upstream fuses and downstream LC filters. Use Value: Absorbs repetitive switching transients from inductive loads while maintaining <0.001 µA leakage to avoid false trips in precision analog monitoring circuits. |
| On-Board Charger Interface | Automotive Lighting Control |
|
Use Scenario: Shielding bidirectional 48 V communication and power interfaces in vehicle-to-grid (V2G) on-board chargers from grid-side surges. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional TVS guards only the positive rail, requiring complementary design for reverse polarity events. Use Value: Enables compliance with CISPR 25 Class 5 radiated emissions by limiting fast-rising transients that couple into CAN/FlexRay signal layers. |
Use Scenario: Securing LED driver ICs and MOSFET switches in adaptive front-lighting systems (AFS) exposed to alternator ripple and jump-start spikes. IC Role / Device Role / Timing Role: Localized clamping at each lighting module's 48 V input, minimizing trace inductance between TVS and protected IC. Use Value: Maintains 150 °C junction temperature rating during 125 °C ambient operation, ensuring reliability across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-Q | Same VRWM (48 V), but lower PPPM = 400 W (same), higher VCL = 79.4 V at 5.0 A; SMA package (larger, 2.4 mm height). | Less suitable for ultra-low-profile modules; higher thermal resistance (Rth(j-a) ≈ 110 K/W) limits repetitive surge capability. | Select when board space allows larger footprint and legacy SMA tooling is in place. |
| SMCJ48A-Q | Higher PPPM = 1500 W, same VRWM, but VCL = 77.4 V at 19.3 A; SMC package (7.1 mm × 6.2 mm, 2.6 mm height). | Overqualified for 400 W needs; excessive size and cost for point-of-load protection where SOD123W fits. | Choose only if system requires multi-kilowatt surge handling or co-location with higher-power TVS arrays. |
Compared with SMAJ48A-Q and SMCJ48A-Q, PTVS48VS1UR-Q delivers identical clamping performance at 48 V with 60% smaller footprint and 1 mm profile-critical for modern automotive modules where Z-axis space and automated assembly throughput are constrained.
Availability
PTVS48VS1UR-Q is available at Aetrix Electronics and suitable for automotive power rail protection, industrial 48 V DC distribution, and adaptive lighting control requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for PTVS48VS1UR-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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
PTVS48VS1UR-Q belongs to the AEC-Q101-qualified PTVSxS1UR-Q series of unidirectional TVS diodes engineered specifically for robust transient suppression in harsh automotive environments and high-reliability industrial power systems.
FAQ
What is the maximum clamping voltage of PTVS48VS1UR-Q under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 77.4 V at a peak pulse current (IPPM) of 5.2 A, measured per IEC 61643-321. This value represents worst-case voltage seen by downstream circuitry during standardized surge testing and must be compared against the absolute maximum ratings of protected ICs.
Does PTVS48VS1UR-Q support bidirectional transient protection?
No-it is a unidirectional TVS diode configured for reverse-biased operation only. It protects against positive-going transients on a positive rail referenced to ground. For bidirectional protection (e.g., data lines), a separate symmetric TVS or back-to-back configuration is required.
How does the SOD123W package affect thermal performance in continuous surge scenarios?
The SOD123W package achieves Rth(j-sp) = 18 K/W when soldered to an adequately sized cathode pad, enabling efficient heat transfer during repetitive surges. However, its Rth(j-a) = 220 K/W in free air means sustained high-frequency transients require careful PCB copper area design to avoid junction temperature exceeding 150 °C.
Is PTVS48VS1UR-Q compatible with lead-free reflow soldering processes?
Yes-the device is qualified for standard lead-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260 °C. The recommended solder land pattern (Fig. 4 in datasheet) uses 0.1 mm stencil thickness and 1.2 mm × 1.4 mm pads for optimal wetting and mechanical reliability.
PTVS48VS1UR-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):
- 48V (Max)
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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
PTVS48VS1UR-QX FAQ
1.How can I place an order for PTVS48VS1UR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS48VS1UR-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 PTVS48VS1UR-QX reliable?
The price and inventory of PTVS48VS1UR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS48VS1UR-QX is usually 5 days.
3.What payment methods are accepted for PTVS48VS1UR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS48VS1UR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS48VS1UR-QX?
PTVS48VS1UR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS48VS1UR-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 PTVS48VS1UR-QX?
For technical support, including PTVS48VS1UR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS48VS1UR-QX requirements.
6.How does Aetrix verify that PTVS48VS1UR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS48VS1UR-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 PTVS48VS1UR-QX meets industry standards.
7.What is the process for return or replacement of PTVS48VS1UR-QX?
All PTVS48VS1UR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS48VS1UR-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 PTVS48VS1UR-QX part is unused and in its original packaging.
Return procedure for PTVS48VS1UR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS48VS1UR-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
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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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