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Nexperia USA Inc. PTVS33VS1UR/8X
- Part No.:
- PTVS33VS1UR/8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS33VS1UR/8X.pdf
- Description:
- TVS DIODE 33VWM 53.3VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:7,792
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Product details
Overview
PTVS33VS1UR 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 VRWM = 33 V, VBR(min) = 36.7 V at 1 mA, VCL(max) = 53.3 V at IPPM = 7.5 A (10/1000 µs), and IRM ≤ 0.1 µA - enabling robust protection of 3.3 V–24 V logic interfaces and 24 V industrial power inputs.
For engineers reviewing the PTVS33VS1UR datasheet, PTVS33VS1UR pinout, PTVS33VS1UR application, or PTVS33VS1UR equivalent, this device is selected for high-energy surge immunity in space-constrained 24 V automotive body electronics, industrial PLC I/O modules, and USB-C PD adapter secondary-side rail protection where low clamping voltage and sub-1 mm profile are critical.
Technical Context
This unidirectional TVS operates as a reverse-biased avalanche diode, triggering when transient voltage exceeds its 33 V standoff threshold and clamping to ≤53.3 V within nanoseconds. Its 400 W peak pulse power rating (per IEC 61643-321, 10/1000 µs waveform) supports repeated surge events without degradation.
Thermal design is enabled by Rth(j-a) = 220 K/W (FR4, single-sided copper) and Rth(j-sp) = 18 K/W (cathode solder point), allowing effective heat dissipation in compact PCB layouts. The cathode-marked SOD123W package ensures correct polarity placement during automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33 V - maximum continuous reverse operating voltage before clamping begins; matches 24 V nominal rail with 37.5% headroom. |
| VBR (min) | 36.7 V at 1 mA - guaranteed avalanche initiation voltage; ensures reliable turn-on above normal operating transients. |
| VCL (max) | 53.3 V at IPPM = 7.5 A - peak clamped voltage during 10/1000 µs surge; protects downstream 50 V-rated ICs. |
| PPPM | 400 W - rated peak pulse power per IEC 61643-321; sustains 7.5 A × 53.3 V surges without failure. |
| IRM | ≤0.1 µA at VRWM - ultra-low leakage preserves battery life in always-on 24 V sensor nodes. |
| Package | SOD123W (CFP3) - 2.6 mm × 1.7 mm × 1.0 mm footprint; enables high-density layout on space-limited control boards. |
Pinout & Package
SOD123W (CFP3) plastic surface-mount package: 2-terminal, flat lead, 1.0 mm max height, marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 24 V rail); marking bar identifies this terminal for polarity-critical placement. |
| 2 (A) | Anode | Connected to ground reference; forms low-impedance shunt path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability (temperature cycling, HBM ESD >4 kV, Tj up to 150 °C). |
| Low-profile SOD123W | 1.0 mm max height enables use under connectors or in stacked PCB assemblies. |
| High ESD immunity | 30 kV contact discharge (IEC 61000-4-2) - eliminates need for additional ESD stages in front-end protection. |
| Stable clamping performance | VCL variation <±5% across -55 °C to +125 °C - ensures consistent protection in engine bay or outdoor enclosures. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: 24 V digital input channel exposed to load dump and inductive kickback in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field input and optocoupler input, clamping transients before signal conditioning circuitry. Use Value: Limits voltage to ≤53.3 V during 400 W surges, preventing damage to 5 V logic-level optocouplers and microcontroller GPIOs. |
Use Scenario: Power supply rail protection in door module ECUs subject to ISO 7637-2 Pulse 5a (load dump up to 60 V). IC Role / Device Role / Timing Role: Primary clamping device on 24 V main rail, positioned upstream of DC-DC converters and CAN transceivers. Use Value: Absorbs 7.5 A transient current while holding rail voltage below 55 V, maintaining CAN bus integrity and MCU reset margin. |
| USB-C PD Adapter Secondary Side | Smart Sensor Node Power Input |
|
Use Scenario: Output rail protection in 20 V/3 A USB-C PD adapters handling hot-plug and cable ESD events. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 20 V output, guarding against reverse-connected cables and connector arcing. Use Value: Clamps 10/1000 µs surges to 53.3 V with <0.1 µA leakage, preserving efficiency and meeting UL 62368-1 surge requirements. |
Use Scenario: Battery-powered industrial temperature/humidity sensor with 24 V auxiliary input for wired commissioning. IC Role / Device Role / Timing Role: Standby-mode protector on 24 V input, active only during transient events to minimize quiescent current impact. Use Value: Enables >10-year battery life via 0.1 µA max reverse leakage while surviving repeated 400 W surges per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A (onsemi) | Same VRWM (33 V), but SMA package (4.5 mm × 2.7 mm × 2.2 mm); VCL = 53.3 V, PPPM = 400 W. | Larger footprint and 2.2 mm height limit use in ultra-thin designs; lower thermal resistance (Rth(j-a) = 110 K/W). | Select when board space allows larger package and higher thermal mass is needed for repetitive surges. |
| 1.5SMC33A (Littelfuse) | DO-214AB package (7.1 mm × 6.2 mm × 2.6 mm); same VRWM/VCL, but PPPM = 1500 W (higher energy capacity). | Not suitable for SMT miniaturized layouts; requires wave soldering or hand assembly; better for infrequent high-energy events. | Choose for legacy designs with DO-214AB footprints or where 1500 W surge margin outweighs size constraints. |
Compared with SMAJ33A and 1.5SMC33A, PTVS33VS1UR delivers identical electrical protection in a 65% smaller footprint and 55% lower profile - making it optimal for next-generation compact power modules where PCB real estate and Z-height are constrained.
Availability
PTVS33VS1UR is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and USB-C PD adapter secondary-side rail protection requiring stable component supply and AEC-Q101 traceability.
Supply support for PTVS33VS1UR 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The PTVSxS1UR series targets compact, high-power transient suppression in automotive and industrial systems - engineered for AEC-Q101 compliance, ultra-low leakage, and minimal PCB footprint without sacrificing 400 W surge capability.
FAQ
What is the maximum clamping voltage of PTVS33VS1UR under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 53.3 V at IPPM = 7.5 A, measured per IEC 61643-321. This value is guaranteed across temperature (–55 °C to +125 °C) and ensures downstream 50 V-rated components remain within safe operating limits during standardized surge events.
Is PTVS33VS1UR qualified for automotive use per AEC-Q101?
Yes - PTVS33VS1UR is explicitly listed in the revision history (v.4, Dec 2025) as one of the 33 types changed to standard AEC-Q101 qualification. It meets stress test requirements for temperature cycling, HBM ESD (>4 kV), and high-temperature operating life, making it suitable for body electronics and non-safety-critical automotive modules.
How does the SOD123W package affect thermal performance compared to SMA or DO-214AB?
The SOD123W package has higher thermal resistance (Rth(j-a) = 220 K/W on FR4) than SMA (110 K/W) or DO-214AB (60 K/W), but its Rth(j-sp) = 18 K/W to the cathode solder point enables efficient localized heat transfer. For short-duration surges (<100 ms), this is sufficient; for repetitive events, thermal relief pads on the cathode pad are recommended.
Can PTVS33VS1UR replace PTVS33VS1U in an existing design?
No - PTVS33VS1U is a discontinued predecessor with different marking, thermal specs, and no AEC-Q101 status. PTVS33VS1UR features updated qualification, tighter VBR tolerance (36.7–38.7 V vs. older 36–40 V), and improved IRM (≤0.1 µA). Layout compatibility is maintained (same SOD123W footprint), but revalidation per AEC-Q101 test plan is required for automotive deployment.
PTVS33VS1UR/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):
- 33V (Max)
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 7.5A
- 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
PTVS33VS1UR/8X FAQ
1.How can I place an order for PTVS33VS1UR/8X through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS33VS1UR/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 PTVS33VS1UR/8X reliable?
The price and inventory of PTVS33VS1UR/8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS33VS1UR/8X is usually 5 days.
3.What payment methods are accepted for PTVS33VS1UR/8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS33VS1UR/8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS33VS1UR/8X?
PTVS33VS1UR/8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS33VS1UR/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 PTVS33VS1UR/8X?
For technical support, including PTVS33VS1UR/8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS33VS1UR/8X requirements.
6.How does Aetrix verify that PTVS33VS1UR/8X is sourced from the original manufacturer or authorized distributors?
All PTVS33VS1UR/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 PTVS33VS1UR/8X meets industry standards.
7.What is the process for return or replacement of PTVS33VS1UR/8X?
All PTVS33VS1UR/8X units undergo pre-shipment inspection (PSI). If there is an issue with PTVS33VS1UR/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 PTVS33VS1UR/8X part is unused and in its original packaging.
Return procedure for PTVS33VS1UR/8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS33VS1UR/8X 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.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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