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Nexperia USA Inc. PTVS12VS1UTR-QX
- Part No.:
- PTVS12VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS12VS1UTR-QX.pdf
- Description:
- PTVS12VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:4,640
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Product details
Overview
PTVS12VS1UTR-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 12 V reverse standoff voltage (VRWM), 19.9 V clamping voltage (VCL) at 20.1 A peak pulse current (IPPM), and junction temperature rating up to 185 °C.
For engineers reviewing the PTVS12VS1UTR-QX datasheet, PTVS12VS1UTR-QX pinout, PTVS12VS1UTR-QX application, or PTVS12VS1UTR-QX equivalent, key selection criteria include clamping performance under IEC 61643-321 10/1000 μs waveform, AEC-Q101 qualification, thermal resistance to solder point (18 K/W), and low-profile 1 mm height for space-constrained PCB layouts.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient surges on DC power lines. Its unidirectional configuration protects against positive-going transients only, with cathode-anode polarity defined by the marking bar on the SOD123W body.
It delivers 400 W peak pulse power per IEC 61643-321 (10/1000 μs), maintains stable clamping up to Tj = 185 °C, and exhibits <0.005 µA reverse leakage at VRWM - critical for low-power always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - maximum continuous reverse operating voltage before clamping begins; sets threshold for protection activation in 12 V automotive systems. |
| VCL @ IPPM | 19.9 V at 20.1 A - clamped voltage during 10/1000 μs surge; ensures downstream ICs see ≤20 V stress during ISO 7637-2 pulse 1/2a events. |
| PPPM | 400 W - peak pulse power handling per IEC 61643-321; enables robust suppression of load-dump and inductive switching transients. |
| Tj max | 185 °C - maximum junction temperature; supports operation in engine bay or under-hood ECUs without derating. |
| Rth(j-sp) | 18 K/W - thermal resistance from junction to solder point; enables effective heat transfer to PCB copper when mounted per recommended footprint. |
| IRM | 0.005 µA @ VRWM - ultra-low reverse leakage; minimizes quiescent current drain in battery-sensitive applications like CAN nodes. |
| AEC-Q101 | Qualified - certified for automotive discrete semiconductors; validates reliability for 15+ year vehicle service life under thermal cycling and humidity. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, marking bar indicates cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 12 V rail); marking bar aligns with this terminal for polarity verification during placement. |
| 2 (A) | Anode | Connected to ground reference; forms low-impedance path to GND during transient clamping events. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature stability | Rated for continuous operation at Tj ≤ 185 °C - eliminates need for thermal derating in under-hood ECU designs. |
| Low-profile SMD package | 1.0 mm max height - enables use in compact ADAS camera modules and sensor fusion PCBs with tight Z-axis constraints. |
| AEC-Q101 qualification | Stress-tested per Automotive Electronics Council standard - confirms suitability for safety-critical power supply inputs in ABS and airbag controllers. |
| Ultra-low leakage | IRM ≤ 0.005 µA at VRWM - preserves battery standby time in always-on telematics units and remote keyless entry receivers. |
| IEC 61643-321 compliance | Validated for 400 W peak pulse power under 10/1000 μs waveform - meets OEM requirements for ISO 7637-2 pulse immunity testing. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Camera Module Protection |
|---|---|
Use Scenario: Protecting 12 V input rail of gasoline/diesel engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and LDO input to clamp transients before they reach voltage regulators and microcontrollers. Use Value: Clamps to 19.9 V at 20.1 A, preventing damage to 24 V-tolerant analog front-ends while maintaining <0.005 µA leakage to avoid battery drain. |
Use Scenario: Safeguarding 12 V power input of rear-view or surround-view cameras mounted near exhaust or transmission. IC Role / Device Role / Timing Role: Primary overvoltage clamp on camera module PCB, positioned upstream of DC-DC converters and image sensors. Use Value: Withstands 185 °C ambient via 18 K/W Rth(j-sp), enabling reliable operation in high-heat zones where conventional TVS diodes fail. |
| Body Control Module (BCM) LIN Bus Power | Electric Power Steering (EPS) Sensor Supply |
Use Scenario: Protecting 12 V supply feeding LIN transceivers and door actuator drivers in BCMs subjected to jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on main BCM power rail, coordinated with fuse and upstream filter capacitors for staged surge absorption. Use Value: 12 V VRWM matches nominal vehicle battery voltage; 400 W PPPM handles repetitive 100 V/50 ms jump-start transients without degradation. |
Use Scenario: Shielding 12 V sensor supply in EPS motor control units exposed to EMI from high-current motor commutation. IC Role / Device Role / Timing Role: Fast-response TVS on Hall-effect or resolver sensor power path to prevent false triggering or offset drift during transients. Use Value: Sub-20 ns response time and 19.9 V clamping ensure sensor output remains within ADC input range during 100 V/100 ms ISO 7637-2 Pulse 2b events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-Q | Lower PPPM (400 W same), but higher VCL (20.9 V at 19.2 A); Rth(j-a) = 70 K/W vs. 18 K/W to solder point. | Lacks AEC-Q101 qualification; rated only to 150 °C junction temperature. | Select for cost-sensitive non-automotive industrial power supplies where thermal margin is less constrained. |
| TPSMA6L12A | Same VRWM and VCL, but lower PPPM (600 W claimed, tested per different waveform); IRM = 1 µA - 200× higher leakage. | Not AEC-Q101 qualified; intended for commercial-grade consumer electronics. | Choose only for non-automotive applications requiring higher peak power rating and where µA-level leakage is acceptable. |
Compared with SMAJ12A-Q and TPSMA6L12A, PTVS12VS1UTR-QX provides superior thermal performance (185 °C Tj, 18 K/W Rth(j-sp)), AEC-Q101 validation, and ultra-low leakage - making it the sole choice for automotive power rail protection where reliability and longevity are mandatory.
Availability
PTVS12VS1UTR-QX is available at Aetrix Electronics and suitable for automotive ECU power inputs, ADAS camera modules, body control units, and electric power steering systems requiring stable component supply across multi-year production cycles.
Supply support for PTVS12VS1UTR-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, discrete, and MOSFET devices, with leadership in automotive-qualified components.
This device belongs to the PTVSxS1UTR-Q series - engineered specifically for high-temperature transient suppression in automotive power networks, emphasizing AEC-Q101 compliance, low-profile packaging, and stable clamping across extreme thermal conditions.
FAQ
What is the clamping voltage of PTVS12VS1UTR-QX at its rated peak pulse current?
The clamping voltage (VCL) is 19.9 V measured at 20.1 A peak pulse current (IPPM), per IEC 61643-321 10/1000 μs waveform. This value is confirmed in Table 8 of the datasheet for the 12 V variant and defines the maximum voltage seen by downstream circuitry during surge events.
Is PTVS12VS1UTR-QX suitable for bidirectional transient protection?
No - PTVS12VS1UTR-QX is a unidirectional TVS diode, configured to clamp only positive transients on the cathode-connected line. For bidirectional protection (e.g., data lines or AC-coupled signals), a dedicated bidirectional TVS such as PTVS12VS1UTR-Q (dual-diode configuration) must be used instead.
How does the SOD123W package affect thermal performance in PCB layout?
The SOD123W package achieves 18 K/W thermal resistance from junction to solder point (Rth(j-sp)) when mounted using the recommended footprint (Fig. 6), enabling efficient heat conduction into PCB copper. This requires a minimum 1 cm² cathode pad area on tin-plated FR4 to realize the specified thermal performance.
Does PTVS12VS1UTR-QX meet ISO 7637-2 test requirements for automotive applications?
Yes - its 400 W peak pulse power rating per IEC 61643-321 (10/1000 μs) directly supports compliance with ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a (load dump simulation), and Pulse 5a (alternator load dump), provided board-level layout and grounding follow automotive EMC best practices.
PTVS12VS1UTR-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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 20.1A
- 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
PTVS12VS1UTR-QX FAQ
1.How can I place an order for PTVS12VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS12VS1UTR-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 PTVS12VS1UTR-QX reliable?
The price and inventory of PTVS12VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS12VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS12VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS12VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS12VS1UTR-QX?
PTVS12VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS12VS1UTR-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 PTVS12VS1UTR-QX?
For technical support, including PTVS12VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS12VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS12VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS12VS1UTR-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 PTVS12VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS12VS1UTR-QX?
All PTVS12VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS12VS1UTR-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 PTVS12VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS12VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS12VS1UTR-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
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D5V0L1B2WS-7
Diodes Incorporated
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