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Nexperia USA Inc. PTVS3V3S1UR/8X
- Part No.:
- PTVS3V3S1UR/8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS3V3S1UR/8X.pdf
- Description:
- TVS DIODE 3.3VWM 8VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:4,825
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Product details
Overview
PTVS3V3S1UR from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for low-profile PCB-level overvoltage protection. It features 3.3 V reverse standoff voltage (VRWM), 5.2–6.0 V breakdown voltage (VBR) at 10 mA, 8.0 V clamping voltage (VCL) at 43.8 A peak pulse current (IPPM), and is qualified to AEC-Q101 for automotive-grade reliability.
For engineers reviewing the PTVS3V3S1UR datasheet, PTVS3V3S1UR pinout, PTVS3V3S1UR application, or PTVS3V3S1UR equivalent, this device is selected for robust ESD/surge protection in space-constrained 3.3 V rail interfaces-especially where low clamping voltage, sub-1 mm height, and IEC 61643-321 (10/1000 µs) compliance are critical.
Technical Context
This unidirectional TVS operates as a silicon avalanche diode, triggered when transient voltage exceeds VRWM = 3.3 V. Its VBR (5.2–6.0 V) ensures reliable turn-on before system damage, while VCL = 8.0 V at IPPM = 43.8 A limits downstream voltage stress under standardized 10/1000 µs surges.
Thermal design is supported by Rth(j-sp) = 18 K/W to cathode solder point and Rth(j-a) = 70–220 K/W depending on PCB layout. The device sustains 30 kV IEC 61000-4-2 contact ESD and >4 kV HBM, with junction temperature rated up to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Maximum continuous reverse operating voltage before leakage rises significantly; sets protection threshold for 3.3 V logic rails. |
| VBR (min–max) | 5.20–6.00 V at IR = 10 mA - Confirmed avalanche onset range; guarantees activation before IC damage in 3.3 V systems. |
| VCL | 8.0 V at IPPM = 43.8 A - Clamped voltage during full-rated surge; keeps protected ICs below absolute maximum ratings. |
| PPPM | 350 W - Peak pulse power rating per IEC 61643-321 (10/1000 µs); lower than series max due to thermal derating at 3.3 V. |
| IRM | 5 µA max at VRWM - Ultra-low reverse leakage preserves battery life and signal integrity in always-on circuits. |
| Package | SOD123W (CFP3) - 2.6 × 1.7 × 1.0 mm surface-mount package enabling high-density placement near connectors or IC inputs. |
| ESD Rating | 30 kV (IEC 61000-4-2 contact) - Withstands repeated electrostatic discharge events without degradation. |
Pinout & Package
SOD123W (CFP3) plastic surface-mount package: 2-terminal, flat lead, 1.0 mm maximum height, marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., USB D+, CAN_H); polarity-sensitive connection for unidirectional clamping. |
| 2 (A) | Anode | Connected to ground reference; forms low-impedance path to shunt surge energy during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile mounting | 1.0 mm max height enables use in ultra-thin consumer and automotive ECUs without mechanical interference. |
| AEC-Q101 qualification | Validated for automotive environments including temperature cycling, humidity, and mechanical shock per discrete semiconductor standard. |
| High surge robustness | Withstands 43.8 A (10/1000 µs) at 8.0 V clamping - protects sensitive 3.3 V microcontrollers and transceivers against ISO 7637-2 pulses. |
| Low leakage & fast response | 5 µA IR at 3.3 V and sub-nanosecond response time ensure minimal standby power loss and immediate clamping. |
| Standardized footprint | Compatible with JEDEC SOD123W land pattern (Fig. 6), supporting automated reflow assembly and IPC-compliant solder joint reliability. |
Applications
| USB 2.0 Interface Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting USB D+ and D− lines in infotainment head units from ESD and load dump coupling. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector, clamping transients before reaching USB PHY IC. Use Value: 8.0 V clamping ensures USB 2.0 receiver (max 3.6 V) remains within safe operating margin even during 43.8 A surge. |
Use Scenario: Safeguarding LIN bus transceiver inputs in door modules exposed to battery disconnection spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line, activated only during overvoltage events above 3.3 V. Use Value: AEC-Q101 qualification and 150 °C junction rating support operation in under-hood temperature extremes. |
| Industrial PLC Digital Input | IoT Sensor Node Power Rail |
Use Scenario: Shielding 3.3 V microcontroller GPIOs connected to external 24 V field wiring subject to inductive kickback. IC Role / Device Role / Timing Role: Low-leakage TVS on input conditioning stage, preventing latch-up during 10/1000 µs surges. Use Value: 5 µA IR at 3.3 V avoids false triggering in high-impedance sensing circuits while maintaining fast response. |
Use Scenario: Securing coin-cell-powered environmental sensors against ESD during handling and board assembly. IC Role / Device Role / Timing Role: Primary ESD suppressor on VDD line, placed adjacent to sensor IC power pins. Use Value: 30 kV contact ESD rating meets IEC 61000-4-2 Level 4, eliminating need for secondary protection layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | DO-214AC package (4.5 × 2.7 × 2.2 mm); 400 W PPPM; VBR = 4.8–5.3 V; VCL = 9.8 V @ 41.2 A | Larger footprint and higher clamping voltage reduce suitability for ultra-compact 3.3 V designs | Select when board space allows larger package and higher VCL is acceptable for legacy designs. |
| TPSMF3.3A | SOD-123FL package (2.7 × 1.7 × 1.0 mm); 400 W PPPM; VBR = 4.8–5.3 V; VCL = 8.5 V @ 40.0 A | Same height but longer body; slightly higher VCL increases risk margin for 3.3 V I/O with tight VIH/VIL | Prefer for cost-sensitive industrial designs where 0.5 V higher clamping is tolerable and footprint compatibility exists. |
Compared with SMAJ3.3A and TPSMF3.3A, PTVS3V3S1UR delivers the lowest clamping voltage (8.0 V) and smallest volume (4.4 mm³) in its class-critical for protecting modern 3.3 V logic with narrow voltage margins and strict PCB height constraints.
Availability
PTVS3V3S1UR is available at Aetrix Electronics and suitable for USB interface protection, automotive body control modules, and industrial PLC digital inputs requiring stable component supply across production lifecycles.
Supply support for PTVS3V3S1UR 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 specializing in high-performance, high-reliability discrete, logic, and MOSFET solutions, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The PTVSxS1UR series targets compact, high-surge-capacity TVS protection for automotive and industrial electronics-designed specifically to meet stringent AEC-Q101 requirements while minimizing PCB area and height.
FAQ
Is PTVS3V3S1UR suitable for bidirectional transient protection?
No. PTVS3V3S1UR is a unidirectional TVS diode, intended only for DC-biased lines like 3.3 V power rails or single-ended data lines referenced to ground. For AC or floating signals requiring symmetrical clamping, a bidirectional variant such as PTVS3V3S1UTR must be used instead.
What is the maximum allowable PCB copper area for optimal thermal performance?
For best thermal resistance, Nexperia recommends a 1 cm² tin-plated copper pad connected to the cathode (Pin 1) on FR4 PCB. This reduces Rth(j-a) from 220 K/W to 130 K/W, improving surge endurance and long-term reliability under repeated transient events.
Does the AEC-Q101 qualification apply to PTVS3V3S1UR in current production?
Yes. Per Revision v.4 (December 2025) of the datasheet, PTVS3V3S1UR is explicitly listed among the 33 types retained with AEC-Q101 qualification-confirmed in Table 9 revision history and Section 11 test information.
Can PTVS3V3S1UR replace older P6SMB3.3A in existing designs?
Not directly. While both protect 3.3 V rails, P6SMB3.3A uses DO-214AA (SMB) package (4.6 × 3.9 × 2.3 mm) and has higher VCL (10.6 V). PTVS3V3S1UR's smaller size and lower clamping improve performance but require PCB footprint redesign and layout verification for thermal and EMI integrity.
PTVS3V3S1UR/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):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.2V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 43.8A
- Power - Peak Pulse:
- 350W
- 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
PTVS3V3S1UR/8X FAQ
1.How can I place an order for PTVS3V3S1UR/8X through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS3V3S1UR/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 PTVS3V3S1UR/8X reliable?
The price and inventory of PTVS3V3S1UR/8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS3V3S1UR/8X is usually 5 days.
3.What payment methods are accepted for PTVS3V3S1UR/8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS3V3S1UR/8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS3V3S1UR/8X?
PTVS3V3S1UR/8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS3V3S1UR/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 PTVS3V3S1UR/8X?
For technical support, including PTVS3V3S1UR/8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS3V3S1UR/8X requirements.
6.How does Aetrix verify that PTVS3V3S1UR/8X is sourced from the original manufacturer or authorized distributors?
All PTVS3V3S1UR/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 PTVS3V3S1UR/8X meets industry standards.
7.What is the process for return or replacement of PTVS3V3S1UR/8X?
All PTVS3V3S1UR/8X units undergo pre-shipment inspection (PSI). If there is an issue with PTVS3V3S1UR/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 PTVS3V3S1UR/8X part is unused and in its original packaging.
Return procedure for PTVS3V3S1UR/8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS3V3S1UR/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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