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Nexperia USA Inc. PTVS8V5S1UTR-QX
- Part No.:
- PTVS8V5S1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS8V5S1UTR-QX.pdf
- Description:
- PTVS8V5S1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
PTVS8V5S1UTR-QX from Nexperia is a unidirectional 400 W transient voltage suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature overvoltage protection in automotive power rails. It features 8.5 V reverse standoff voltage (VRWM), 14.4 V clamping voltage (VCL) at 5 mA, 27.8 A peak pulse current (IPPM), and operates up to 185 °C junction temperature.
For engineers reviewing the PTVS8V5S1UTR-QX datasheet, PTVS8V5S1UTR-QX pinout, PTVS8V5S1UTR-QX application, or PTVS8V5S1UTR-QX equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification, thermal resistance to solder point (18 K/W), and low leakage (0.01 µA at VRWM).
Technical Context
This TVS diode uses a planar silicon junction structure optimized for stable breakdown behavior across −55 °C to +185 °C ambient range. Its unidirectional configuration provides forward conduction only during negative transients relative to cathode, with precise 8.5 V VRWM tolerance (±5%) and 9.44–10.40 V breakdown voltage (VBR) at 5 mA.
Thermal design is enabled by low Rth(j-sp) = 18 K/W to cathode solder point and robust 30 kV IEC 61000-4-2 ESD rating. The device sustains 400 W peak pulse power per IEC 61643-321 (10/1000 µs waveform) and maintains clamping voltage stability with <6.5 mV/K temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 8.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin in 12 V automotive systems. |
| VCL @ IPPM | 14.4 V - Clamping voltage at 27.8 A peak pulse current; limits downstream IC stress during ISO 7637-2 pulse 1/2a/5a events. |
| PPPM | 400 W - Peak pulse power handling per IEC 61643-321 10/1000 µs waveform; supports high-energy load dump suppression. |
| IRM | 0.01 µA - Reverse leakage at VRWM and 25 °C; ensures minimal quiescent current drain in always-on vehicle modules. |
| Tj max | 185 °C - Maximum junction temperature; enables placement near hot engine control units without derating. |
| Rth(j-sp) | 18 K/W - Thermal resistance from junction to cathode solder point; allows direct PCB copper pour thermal coupling for sustained surge duty. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2); protects CAN/LIN bus interfaces against human-body and system-level ESD events. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height, flat lead profile, cathode marked with bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., battery rail); absorbs positive transients when referenced to ground. |
| 2 (A) | Anode | Connected to system ground; completes conduction path during overvoltage clamp event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested per automotive discrete semiconductor standard; validated for under-hood deployment in ECUs and ADAS sensors. |
| High-temp stability | Full 400 W PPPM maintained up to 150 °C junction; derates only to ~280 W at 185 °C (per Fig. 2). |
| Low-profile mounting | 1.0 mm max height enables use in space-constrained modules like junction boxes and battery management systems. |
| Low IRM | 0.01 µA leakage at VRWM minimizes standby power loss in always-on telematics and gateway modules. |
| Robust ESD immunity | 30 kV contact / 30 kV air discharge rating meets ISO 10605 requirements for automotive electronics. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protects 12 V supply input of engine control unit against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between battery rail and input filter capacitor, clamping transients above 14.4 V. Use Value: Limits voltage seen by upstream LDOs and microcontrollers to safe levels while sustaining 400 W surge without degradation. |
Use Scenario: Shields BCM power domain from jump-start surges and relay coil flyback in door module circuits. IC Role / Device Role: Primary overvoltage clamp on fused 12 V feed, mounted directly at connector entry point. Use Value: Prevents latch-up or burnout of LIN transceivers and power MOSFET drivers during 24 V jump-start events. |
| Electric Power Steering (EPS) Sensor Supply | Automotive Infotainment Head Unit |
|
Use Scenario: Guards 5 V/3.3 V sensor supply rails in EPS motor control assemblies exposed to high EMI and thermal cycling. IC Role / Device Role: Secondary TVS after primary filtering, placed adjacent to Hall-effect or resolver sensor ICs. Use Value: Maintains <10 nA leakage and stable 14.4 V clamping across −40 °C to +150 °C ambient, ensuring signal integrity. |
Use Scenario: Protects USB-C PD and display interface power inputs in head units subjected to hot-plug and cable discharge events. IC Role / Device Role: Front-end transient suppressor on 5 V USB VBUS line, coordinated with internal OVP circuitry. Use Value: Absorbs 30 kV ESD pulses without triggering system reset, preserving audio/video continuity during user interaction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5A-Q | Same VRWM (8.5 V) but lower PPPM (400 W vs. SMAJ series' 400 W); higher VCL (15.0 V) and larger SMA package (4.5 mm × 2.7 mm). | Less suitable for ultra-low-profile layouts; requires more PCB area and has higher Rth(j-a) (~50 K/W). | Choose if legacy SMA footprint compatibility is required and height constraint >1.0 mm is acceptable. |
| TPSMA6L8.5A | Higher VRWM tolerance (±10%), lower IRM (0.5 µA), but lower PPPM (600 W only at 25 °C; drops to ~220 W at 125 °C). | Lacks AEC-Q101 qualification; not rated for 185 °C operation or automotive under-hood use. | Select only for non-automotive industrial applications where extended temperature range is not required. |
Compared with SMAJ8.5A-Q and TPSMA6L8.5A, PTVS8V5S1UTR-QX delivers superior thermal robustness (185 °C Tj), tighter VCL (14.4 V), and smaller footprint-making it optimal for next-gen automotive modules where space, temperature, and qualification are critical.
Availability
PTVS8V5S1UTR-QX is available at Aetrix Electronics and suitable for automotive ECU power protection, body control module surge suppression, and electric power steering sensor rail stabilization requiring stable component supply across extended temperature ranges.
Supply support for PTVS8V5S1UTR-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 high-volume, high-reliability logic, analog, and discrete components, with leadership in automotive-qualified devices.
The PTVSxS1UTR-Q series targets high-temperature transient suppression in automotive power networks, delivering AEC-Q101-compliant TVS performance in miniature SOD123W packages for space- and thermal-critical applications.
FAQ
What is the maximum clamping voltage of PTVS8V5S1UTR-QX at its rated peak pulse current?
The clamping voltage (VCL) is 14.4 V at 27.8 A peak pulse current (IPPM), measured per IEC 61643-321 10/1000 µs waveform. This value is guaranteed across −55 °C to +150 °C junction temperature and defines the upper voltage limit imposed on protected circuitry during surge events.
Is PTVS8V5S1UTR-QX suitable for bidirectional transient protection?
No. PTVS8V5S1UTR-QX is a unidirectional TVS diode, configured to clamp only positive transients on the cathode side relative to ground. For bidirectional protection (e.g., data lines), a symmetric dual-diode array or dedicated bidirectional TVS such as PTVS8V5S2UTR-QX would be required.
How does the 185 °C junction rating impact PCB layout decisions?
The 185 °C Tj rating permits placement near heat sources (e.g., power MOSFETs or DC-DC inductors) without external heatsinking. Layout should maximize copper area on the cathode pad (≥1 cm² tin-plated FR4) to leverage the 18 K/W Rth(j-sp) and maintain safe junction temperatures during repeated surges.
Does PTVS8V5S1UTR-QX require derating of peak pulse power at elevated ambient temperatures?
Yes. While rated for 400 W at 25 °C, peak pulse power decreases with rising junction temperature-down to approximately 280 W at 185 °C (per Fig. 2). System-level thermal modeling must account for both ambient temperature and self-heating during surge events to ensure reliable clamping performance.
PTVS8V5S1UTR-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):
- 8.5V (Max)
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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
PTVS8V5S1UTR-QX FAQ
1.How can I place an order for PTVS8V5S1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS8V5S1UTR-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 PTVS8V5S1UTR-QX reliable?
The price and inventory of PTVS8V5S1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS8V5S1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS8V5S1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS8V5S1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS8V5S1UTR-QX?
PTVS8V5S1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS8V5S1UTR-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 PTVS8V5S1UTR-QX?
For technical support, including PTVS8V5S1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS8V5S1UTR-QX requirements.
6.How does Aetrix verify that PTVS8V5S1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS8V5S1UTR-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 PTVS8V5S1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS8V5S1UTR-QX?
All PTVS8V5S1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS8V5S1UTR-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 PTVS8V5S1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS8V5S1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS8V5S1UTR-QX Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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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.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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