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Nexperia USA Inc. PTVS12VS1UR/8X
- Part No.:
- PTVS12VS1UR/8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS12VS1UR/8X.pdf
- Description:
- TVS DIODE 12VWM 19.9VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:6,872
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Product details
Overview
PTVS12VS1UR 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 12 V reverse standoff voltage (VRWM), 14.7 V maximum clamping voltage (VCL) at 19.9 A peak pulse current (IPPM), and 0.005 µA reverse leakage at VRWM - enabling robust protection of 12 V automotive and industrial power inputs against IEC 61643-321 10/1000 µs surges.
For engineers reviewing the PTVS12VS1UR datasheet, PTVS12VS1UR pinout, PTVS12VS1UR application, or PTVS12VS1UR equivalent, this device serves as a compact, surface-mount surge protector with AEC-Q101 qualification, low 1 mm profile, and verified clamping performance under 150 °C junction temperature operation.
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode to clamp transient voltages above its VRWM. Its VBR (breakdown voltage) is specified at 13.3–14.7 V (min–max) with 1 mA test current, ensuring reliable turn-on before downstream IC damage thresholds.
It conforms to IEC 61643-321 with 10/1000 µs waveform rating, delivers 400 W peak pulse power (PPPM), and maintains <0.005 µA IRM up to 12 V - critical for low-power standby circuits where leakage must not disrupt sleep-mode current budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - maximum continuous reverse operating voltage before clamping begins; matches standard 12 V automotive supply rails. |
| VCL @ IPPM | 14.7 V at 19.9 A - clamped voltage during 10/1000 µs surge; ensures protected ICs see ≤14.7 V even under full-rated transient stress. |
| PPPM | 400 W - peak pulse power handling per IEC 61643-321; enables suppression of high-energy transients without thermal runaway. |
| IRM | 0.005 µA at VRWM - ultra-low reverse leakage; avoids measurable current draw in battery-backed or energy-harvesting systems. |
| Rth(j-a) | 220 K/W - thermal resistance junction-to-ambient on FR4 PCB; informs derating above 25 °C ambient for sustained reliability. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2); provides system-level ESD immunity without additional discrete protection stages. |
Pinout & Package
PTVS12VS1UR uses the SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat leads, cathode marked by bar. Thermal pad on cathode enables enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +12 V rail); marking bar identifies this terminal; carries full surge current during clamping. |
| 2 (A) | Anode | Connected to ground reference; completes avalanche conduction path; requires low-inductance ground plane for effective transient shunting. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - supports deployment in engine control, body electronics, and ADAS power domains. |
| 1 mm max height | Enables use in space-constrained modules (e.g., ECUs, sensor nodes) where vertical clearance is limited by adjacent connectors or shields. |
| 400 W PPPM rating | Handles ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 5a/b (alternator load dump) transients without degradation when properly mounted. |
| SOD123W footprint | Standardized land pattern (per Fig. 6) ensures compatibility with automated reflow processes and eliminates need for custom stencil design. |
Applications
| Automotive Power Input Protection | Industrial 12 V DC Power Rail |
|---|---|
|
Use Scenario: Protecting microcontroller power pins in vehicle door modules exposed to load-dump transients up to 35 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +12 V supply and ground, clamping within 1 ns to limit voltage seen by LDO input. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic ICs by holding rail voltage ≤14.7 V during 19.9 A surge events. |
Use Scenario: Safeguarding PLC I/O power rails against switching transients from relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V auxiliary supply, positioned upstream of DC-DC converters and level translators. Use Value: Eliminates need for secondary TVS or RC snubbers by absorbing 400 W pulses without derating at 85 °C ambient. |
| USB-C Power Delivery Interface | Smart Sensor Node Power Input |
|
Use Scenario: Guarding USB-C VBUS line in automotive infotainment head units against hot-plug and cable ESD events. IC Role / Device Role / Timing Role: First-line transient suppressor on VBUS path, coordinated with internal port controller ESD structures. Use Value: Withstands 30 kV contact ESD per IEC 61000-4-2 while adding only 0.005 µA leakage - preserving PD negotiation accuracy. |
Use Scenario: Securing battery-powered environmental sensors connected to 12 V field wiring in building automation systems. IC Role / Device Role / Timing Role: Standalone surge protector on main power entry, sized to survive repeated lightning-induced surges on long cables. Use Value: Delivers 20.1 A IPPM capability with 14.7 V clamping - maintaining sensor MCU operation during 10/1000 µs transients up to 400 W. |
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 | Same VRWM (12 V), but lower PPPM (400 W same), higher VCL (20.1 V), larger SMA package (2.5 mm height). | Less suitable for ultra-low-profile designs; higher clamping increases risk of downstream IC overvoltage. | Select only if board layout allows taller component or existing SMA footprint reuse is prioritized over clamping performance. |
| SMF12A | Same VRWM (12 V), lower PPPM (200 W), identical SOD-123 package, VCL = 19.9 V. | Insufficient for ISO 7637-2 Pulse 5b (load dump); limited to lower-energy transients like EFT or ESD. | Use only in cost-sensitive non-automotive applications where 200 W surge margin is adequate and 14.7 V clamping is not required. |
Compared with SMAJ12A and SMF12A, PTVS12VS1UR offers superior clamping (14.7 V vs. ≥19.9 V), AEC-Q101 qualification, and 1 mm height - making it the optimal choice for space-constrained, high-reliability 12 V power rail protection where precise voltage limiting is critical.
Availability
PTVS12VS1UR is available at Aetrix Electronics and suitable for automotive power input protection, industrial 12 V DC power rail hardening, and smart sensor node power entry requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for PTVS12VS1UR 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for automotive, industrial, and mobile applications.
PTVS12VS1UR belongs to the PTVSxS1UR series of unidirectional TVS diodes engineered specifically for robust, low-profile transient suppression on 3.3 V to 64 V DC power lines in harsh environments.
FAQ
What is the maximum clamping voltage of PTVS12VS1UR under rated surge conditions?
The maximum clamping voltage (VCL) is 14.7 V at 19.9 A peak pulse current (IPPM), measured per IEC 61643-321 10/1000 µs waveform. This value is guaranteed across the full operating temperature range (−55 °C to 150 °C) and ensures downstream components remain within safe voltage limits during standardized surge events.
Is PTVS12VS1UR qualified for automotive use per AEC-Q101?
Yes - PTVS12VS1UR is explicitly listed in the revision history (v.4, Dec 2025) as one of the 33 types changed to standard AEC-Q101 qualification. It has passed stress tests including HTGB, H3TRB, and ESD per AEC-Q101 Rev G, and is approved for automotive power supply protection applications.
How does the SOD123W package affect thermal performance compared to SMA or SMB?
The SOD123W package delivers lower thermal resistance to solder point (Rth(j-sp) = 18 K/W) than SMA (typically >30 K/W), due to its flat cathode tab and optimized copper pad coupling. This enables higher sustained power handling on compact PCBs - especially critical when multiple TVS devices share limited board area in dense ECU layouts.
Can PTVS12VS1UR be used in bidirectional signal line protection?
No - PTVS12VS1UR is unidirectional and functions only as a cathode-to-anode clamp. For bidirectional signal lines (e.g., CAN, RS-485), a symmetric TVS like PTVS3V3S1UR-B or dedicated bidirectional array is required. Using this part on AC-coupled or differential lines risks forward conduction and permanent damage.
PTVS12VS1UR/8X 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):
- 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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
PTVS12VS1UR/8X FAQ
1.How can I place an order for PTVS12VS1UR/8X through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS12VS1UR/8X 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 PTVS12VS1UR/8X reliable?
The price and inventory of PTVS12VS1UR/8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS12VS1UR/8X is usually 5 days.
3.What payment methods are accepted for PTVS12VS1UR/8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS12VS1UR/8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS12VS1UR/8X?
PTVS12VS1UR/8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS12VS1UR/8X 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 PTVS12VS1UR/8X?
For technical support, including PTVS12VS1UR/8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS12VS1UR/8X requirements.
6.How does Aetrix verify that PTVS12VS1UR/8X is sourced from the original manufacturer or authorized distributors?
All PTVS12VS1UR/8X 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 PTVS12VS1UR/8X meets industry standards.
7.What is the process for return or replacement of PTVS12VS1UR/8X?
All PTVS12VS1UR/8X units undergo pre-shipment inspection (PSI). If there is an issue with PTVS12VS1UR/8X, 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 PTVS12VS1UR/8X part is unused and in its original packaging.
Return procedure for PTVS12VS1UR/8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS12VS1UR/8X Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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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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Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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