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Nexperia USA Inc. PTVS33VS1UR,115
- Part No.:
- PTVS33VS1UR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS33VS1UR,115.pdf
- Description:
- TVS DIODE 33VWM 53.3VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:101,162
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Product details
Overview
PTVS33VS1UR,115 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, 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,115 datasheet, PTVS33VS1UR,115 pinout, PTVS33VS1UR,115 application, or PTVS33VS1UR,115 equivalent, key selection criteria include clamping voltage margin relative to system rail tolerance, peak pulse current capability under IEC 61643-321 10/1000 μs waveform, thermal resistance to PCB copper area, and qualification status for automotive-grade reliability.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp: reverse-biased during normal operation with <0.1 μA leakage at 33 V, then rapidly avalanches when transient voltage exceeds 36.7 V (min breakdown), limiting downstream voltage to ≤53.3 V at 7.5 A peak pulse current. Its junction-to-solder-point thermal resistance is 18 K/W, enabling effective heat dissipation through cathode pad routing.
The device complies with IEC 61643-321 for 10/1000 μs surge testing and achieves >30 kV ESD immunity per IEC 61000-4-2 contact discharge. Though originally AEC-Q101 qualified, revision v.4 confirms PTVS33VS1UR,115 retains standard qualification status - suitable for industrial and commercial applications but not automotive end-use per latest datasheet revision history.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33 V - maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected rail stability |
| VBR (min) | 36.7 V - guaranteed minimum breakdown voltage at 1 mA; defines earliest clamping onset point |
| VCL (max) | 53.3 V - maximum clamped voltage at 7.5 A (10/1000 μs); determines worst-case stress on downstream ICs |
| PPPM | 400 W - rated peak pulse power per IEC 61643-321; enables handling of high-energy transients without failure |
| IRM | ≤0.1 μA - reverse leakage at VRWM; ensures negligible standby current draw in battery-powered systems |
| Rth(j-sp) | 18 K/W - thermal resistance from junction to solder point; requires ≥1 cm² cathode copper pad for sustained pulse handling |
| ESD Rating | 30 kV (IEC 61000-4-2 contact) - withstands severe electrostatic events without parameter shift or failure |
Pinout & Package
PTVS33VS1UR,115 uses the SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile optimized for low-profile PCB layouts and automated reflow assembly. Cathode identification is marked by a bar on the package top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected circuit's positive rail; carries full surge current during clamping; must be routed to large copper pour for thermal management |
| 2 (A) | Anode | Connected to ground reference; completes clamping path; low-inductance grounding essential for fast transient response |
Key Features
| Feature | Design Value |
|---|---|
| Peak Pulse Power | 400 W (IEC 61643-321, 10/1000 μs) - sustains high-energy surges common in industrial power line coupling |
| Low Profile Height | 1.0 mm max - enables use in space-constrained modules such as IoT sensor nodes and portable medical devices |
| Low Leakage Current | ≤0.1 μA at 33 V - prevents measurable drain on always-on 3.3 V or 5 V backup supplies |
| High ESD Robustness | 30 kV contact discharge (IEC 61000-4-2) - eliminates need for additional ESD protection on board-level I/O lines |
| Solder Compatibility | Reflow-optimized CFP3 footprint per Nexperia doc sod123w_fr - supports standard Pb-free reflow profiles without tombstoning |
Applications
| Industrial PLC I/O Protection | USB-C Power Delivery Rail Clamp |
|---|---|
|
Use Scenario: 24 V DC input to programmable logic controller digital input module exposed to inductive switching transients from solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and ground, clamping spikes within 1 ns to protect input buffer ICs. Use Value: VCL = 53.3 V ensures downstream 74LVC logic (abs max 7 V) remains undamaged; 400 W rating handles repetitive 100 A inductive kickback events. |
Use Scenario: 20 V PD bus in USB-C port subjected to hot-plug insertion surges and cable-induced transients. IC Role / Device Role / Timing Role: Standoff protection device on VBUS line, absorbing energy before it reaches buck converter and USB-PD controller. Use Value: 33 V VRWM provides 13 V margin above 20 V nominal, while 53.3 V clamping stays below 60 V abs max rating of common PD controllers like FUSB302. |
| Smart Meter Power Supply Input | RS-485 Transceiver Bus Line Clamp |
|
Use Scenario: AC/DC converter output feeding microcontroller and metrology ICs in utility smart meters deployed in electrically noisy substations. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 3.3 V or 5 V regulated output, placed immediately after LDO or DC/DC converter. Use Value: 0.1 μA IRM prevents meter battery drain during long-term storage; 1 mm height allows placement under metal shielding can. |
Use Scenario: Differential data lines of isolated RS-485 transceiver (e.g., ADM2587E) exposed to lightning-induced ground potential differences. IC Role / Device Role / Timing Role: Bidirectional protection not required - unidirectional TVS used on each line referenced to local ground plane. Use Value: 33 V standoff accommodates ±12 V common-mode swing; 53.3 V clamping protects transceiver I/O pins rated to 60 V abs max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | DO-214AC package (4.5 mm × 2.7 mm × 2.2 mm); 400 W PPPM; VCL = 53.3 V @ 7.5 A; VRWM = 33 V; same IEC 61643-321 compliance | Larger footprint and 2.2 mm height - unsuitable for ultra-thin designs; higher Rth(j-a) limits sustained pulse duty cycle | Select when board space permits larger package and thermal mass improves reliability under repeated surges |
| SMCJ33A | DO-214AB package (7.1 mm × 6.2 mm × 2.6 mm); 1500 W PPPM; VCL = 53.3 V @ 23.3 A; VRWM = 33 V; higher surge capacity | 3× larger footprint; intended for primary AC-line or DC-input protection, not secondary rail clamping | Choose only for front-end protection where 1500 W energy absorption is required and space allows |
Compared with SMAJ33A and SMCJ33A, PTVS33VS1UR,115 delivers identical clamping performance in a 60% smaller footprint and 55% lower profile - making it optimal for secondary-side rail protection where PCB real estate and Z-height are constrained, while maintaining full IEC 61643-321 compliance.
Availability
PTVS33VS1UR,115 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, USB-C power delivery rail clamping, smart meter power supply inputs, and RS-485 transceiver bus line protection requiring stable component supply across multi-year production cycles.
Supply support for PTVS33VS1UR,115 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 headquartered in Nijmegen, Netherlands, specializing in high-volume production of discrete, logic, and MOSFET devices with emphasis on reliability, efficiency, and miniaturization.
The PTVSxS1UR series belongs to Nexperia's transient protection portfolio, engineered specifically for compact, high-power-density DC rail protection in industrial automation, consumer power adapters, and communication infrastructure - prioritizing low profile, high surge rating, and consistent clamping behavior.
FAQ
Is PTVS33VS1UR,115 qualified for automotive applications?
No. Although earlier revisions cited AEC-Q101 qualification, the December 2025 datasheet revision v.4 explicitly states that PTVS33VS1UR,115 has been moved to standard qualification status. It is approved for industrial and commercial use only - not for automotive ECUs, ADAS, or infotainment systems requiring AEC-Q101 compliance.
What is the recommended PCB layout for optimal thermal performance?
For reliable 400 W pulse handling, route the cathode (Pin 1) to a ≥1 cm² copper pour on the top layer, connected via ≥2 thermal vias (0.3 mm diameter) to an internal or bottom-layer ground plane. The anode (Pin 2) must connect to a low-inductance ground net - avoid daisy-chained ground traces. Follow Nexperia's sod123w_fr footprint (2.1 mm × 1.6 mm solder land).
How does PTVS33VS1UR,115 behave during a 10/1000 μs surge event?
When a transient exceeds 36.7 V, the diode enters avalanche breakdown within <1 ns, clamping voltage to ≤53.3 V while conducting up to 7.5 A peak current. At 400 W peak power, junction temperature rise is limited by Rth(j-sp) = 18 K/W - resulting in ~135 °C ΔT above solder point temperature, well within the 150 °C absolute max Tj rating.
Can PTVS33VS1UR,115 replace bidirectional TVS diodes in differential signal lines?
No. As a unidirectional device, PTVS33VS1UR,115 only conducts in reverse bias - it cannot suppress negative-going transients on signal lines referenced to ground. For RS-485 or CAN bus protection, a bidirectional TVS (e.g., PTVS33VS1UR-S or SMAJ33CA) is required to handle both polarities of differential surge.
PTVS33VS1UR,115 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
- 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,115 FAQ
1.How can I place an order for PTVS33VS1UR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS33VS1UR,115 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,115 reliable?
The price and inventory of PTVS33VS1UR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS33VS1UR,115 is usually 5 days.
3.What payment methods are accepted for PTVS33VS1UR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS33VS1UR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS33VS1UR,115?
PTVS33VS1UR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS33VS1UR,115 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,115?
For technical support, including PTVS33VS1UR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS33VS1UR,115 requirements.
6.How does Aetrix verify that PTVS33VS1UR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS33VS1UR,115 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,115 meets industry standards.
7.What is the process for return or replacement of PTVS33VS1UR,115?
All PTVS33VS1UR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS33VS1UR,115, 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,115 part is unused and in its original packaging.
Return procedure for PTVS33VS1UR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS33VS1UR,115 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
-
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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