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Nexperia USA Inc. PTVS28VS1UTR,115
- Part No.:
- PTVS28VS1UTR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS28VS1UTR,115.pdf
- Description:
- TVS DIODE 28VWM 45.4VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:4,802
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Product details
Overview
PTVS28VS1UTR,115 from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature transient overvoltage protection in power rails. It features VRWM = 28 V, VBR(min) = 31.1 V, VCL = 45.4 V at IPPM = 8.8 A (10/1000 µs), and operates up to Tj = 185 °C - enabling robust clamping in industrial power supplies and automotive under-hood modules.
For engineers reviewing the PTVS28VS1UTR,115 datasheet, PTVS28VS1UTR,115 pinout, PTVS28VS1UTR,115 application, or PTVS28VS1UTR,115 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, thermal resistance Rth(j-sp) = 18 K/W for solder-point cooling, peak pulse current capability under 10/1000 µs waveform, and ESD rating (30 kV contact discharge).
Technical Context
This unidirectional TVS diode uses an avalanche breakdown structure optimized for fast response (<1 ns) to transients while maintaining low leakage (IRM ≤ 0.001 µA at VRWM). Its temperature coefficient of breakdown voltage (SZ = 0.5 mV/K) ensures stable clamping across –55 °C to +185 °C ambient operation.
The device complies with IEC 61643-321 for 10/1000 µs surge testing and supports high-reliability mounting on FR4 or ceramic PCBs, with Rth(j-a) as low as 70 K/W on Al₂O₃ and Rth(j-sp) = 18 K/W to cathode solder point - critical for sustained surge handling in thermally constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 28 V - maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin. |
| VBR (min) | 31.1 V - guaranteed avalanche breakdown starts no lower than this; defines lower bound of clamping onset. |
| VCL @ IPPM | 45.4 V - clamped voltage at 8.8 A peak pulse (10/1000 µs); must stay below protected IC absolute max rating. |
| PPPM | 400 W - rated peak pulse power per IEC 61643-321; determines single-event surge energy absorption capacity. |
| IRM | 0.001 µA - reverse leakage at VRWM; negligible loading on 28 V supply during normal operation. |
| Tj max | 185 °C - maximum junction temperature; enables deployment in engine control units and industrial motor drives. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2); provides system-level ESD immunity without external shielding. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height, flat lead profile, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 28 V rail); absorbs positive transients when referenced to ground. |
| 2 (A) | Anode | Connected to system ground; completes conduction path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Junction rated to 185 °C - supports placement near heat sources in power converters and motor controllers. |
| Low-profile SMD package | 1.0 mm max height - enables use in space-constrained modules including DC-DC bricks and battery management systems. |
| Stable clamping over temperature | Breakdown tempco SZ = 0.5 mV/K - ensures predictable VCL shift across full operating range, simplifying margin analysis. |
| Low thermal resistance to solder point | Rth(j-sp) = 18 K/W - allows efficient heat transfer from junction to PCB copper, sustaining repeated surges. |
| High ESD immunity | 30 kV contact discharge rating - eliminates need for additional ESD protection stages in front-end interfaces. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: 28 V input rail in programmable logic controller (PLC) power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 28 V rail and chassis ground to clamp transients within 1 ns. Use Value: Limits VCL to 45.4 V - 21% below typical 57 V absolute max rating of downstream DC-DC controllers, ensuring safe operation. |
Use Scenario: 28 V battery feed to BCM microcontroller and CAN transceiver in commercial vehicle cabin electronics. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, coordinated with upstream fuse and downstream LC filtering. Use Value: Withstands 185 °C junction temperature - survives under-dash mounting near HVAC ducts without derating. |
| Telecom Remote Radio Unit | Renewable Energy Inverter Control Board |
|
Use Scenario: 28 V auxiliary supply in outdoor 5G RRH unit subject to lightning-induced surges on PoE-derived power lines. IC Role / Device Role / Timing Role: First-line transient suppressor before DC-DC conversion and FPGA power sequencing. Use Value: 400 W PPPM rating handles multiple 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation. |
Use Scenario: 28 V control rail in solar inverter gate driver board exposed to grid-switching transients and EMI coupling. IC Role / Device Role / Timing Role: Rail-to-ground TVS protecting isolated gate drivers and MCU I/O from coupled spikes. Use Value: 0.001 µA IRM prevents measurable leakage current drain on standby power - critical for low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | Lower PPPM = 400 W but higher VCL = 48.4 V at same IPPM; Rth(j-a) = 90 K/W (vs. 70 K/W typical for PTVS28VS1UTR). | Less suitable for high-temperature PCB layouts due to higher thermal resistance and looser clamping margin. | Select only if footprint compatibility with SMA package is mandatory and thermal headroom exceeds 25 °C. |
| SMCJ28A | Higher PPPM = 1500 W but larger DO-214AB package (7.11 mm × 6.22 mm); VCL = 45.7 V at IPPM = 32.8 A. | Over-specified for 28 V rail protection where space and weight are constrained - e.g., UAV power modules. | Prefer only when system-level surge test requirements exceed IEC 61000-4-5 Level 4 or repeated surge endurance is critical. |
Compared with SMAJ28A and SMCJ28A, PTVS28VS1UTR,115 delivers tighter clamping (45.4 V), lower thermal resistance (18 K/W to solder point), and 1 mm profile - making it optimal for thermally dense, space-limited 28 V protection where precise voltage margin and high-temperature reliability are essential.
Availability
PTVS28VS1UTR,115 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, telecom remote radio units, and renewable energy inverter control boards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PTVS28VS1UTR,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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and thermal robustness.
The PTVSxS1UTR series targets high-reliability transient suppression in harsh environments - specifically engineered for automotive under-hood, industrial automation, and telecom infrastructure where 185 °C operation and 400 W surge handling are non-negotiable.
FAQ
What is the maximum clamping voltage of PTVS28VS1UTR,115 under standard 10/1000 µs surge conditions?
The clamping voltage VCL is 45.4 V at IPPM = 8.8 A for a 10/1000 µs waveform, measured per IEC 61643-321. This value is guaranteed across the full operating temperature range (–55 °C to +150 °C junction), with typical drift <±2% from 25 °C baseline.
Can PTVS28VS1UTR,115 be used in automotive under-hood applications?
Yes - its 185 °C maximum junction temperature, 30 kV ESD rating, and stable VBR tempco (0.5 mV/K) meet requirements for non-safety-critical under-hood functions such as body control modules and sensor interface power rails, though it is not AEC-Q200 qualified.
How does the SOD123W package affect thermal performance compared to SMA or SMC packages?
The SOD123W package achieves Rth(j-sp) = 18 K/W to the cathode solder point - significantly lower than SMA (≈45 K/W) and competitive with SMC (≈15 K/W) - due to its low-profile copper strap design and optimized thermal pad layout, enabling better surge repetition rate handling in compact layouts.
Is PTVS28VS1UTR,115 bidirectional or unidirectional?
It is unidirectional: pin 1 is cathode (marked with bar), pin 2 is anode. It conducts only during positive transients on the cathode side relative to anode (ground), making it suitable for DC rail protection where polarity is fixed and reverse voltage stress is absent.
PTVS28VS1UTR,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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- 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
PTVS28VS1UTR,115 FAQ
1.How can I place an order for PTVS28VS1UTR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS28VS1UTR,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 PTVS28VS1UTR,115 reliable?
The price and inventory of PTVS28VS1UTR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS28VS1UTR,115 is usually 5 days.
3.What payment methods are accepted for PTVS28VS1UTR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS28VS1UTR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS28VS1UTR,115?
PTVS28VS1UTR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS28VS1UTR,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 PTVS28VS1UTR,115?
For technical support, including PTVS28VS1UTR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS28VS1UTR,115 requirements.
6.How does Aetrix verify that PTVS28VS1UTR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS28VS1UTR,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 PTVS28VS1UTR,115 meets industry standards.
7.What is the process for return or replacement of PTVS28VS1UTR,115?
All PTVS28VS1UTR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS28VS1UTR,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 PTVS28VS1UTR,115 part is unused and in its original packaging.
Return procedure for PTVS28VS1UTR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS28VS1UTR,115 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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