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Nexperia USA Inc. PTVS28VS1UR,115
- Part No.:
- PTVS28VS1UR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS28VS1UR,115.pdf
- Description:
- TVS DIODE 28VWM 45.4VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:12,842
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Product details
Overview
PTVS28VS1UR,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 a 28 V reverse standoff voltage (VRWM), 34.4 V maximum clamping voltage (VCL) at 45.4 A peak pulse current (IPPM), and 0.001 µA reverse leakage current - enabling robust protection in space-constrained industrial and power management circuits.
For engineers reviewing the PTVS28VS1UR,115 datasheet, PTVS28VS1UR,115 pinout, PTVS28VS1UR,115 application, or PTVS28VS1UR,115 equivalent, this device is selected for precise 28 V rail protection where low-profile mounting, high surge immunity, and verified IEC 61643-321 (10/1000 µs) compliance are required.
Technical Context
This unidirectional TVS operates as a clamping diode with avalanche breakdown behavior, triggered when reverse voltage exceeds VRWM = 28 V. Its VBR (breakdown voltage) is specified at 31.1–34.4 V (min–max) with 1 mA test current, ensuring predictable turn-on during transients.
It delivers 400 W peak pulse power per IEC 61643-321 (10/1000 µs waveform) up to Tj = 25 °C, derating linearly above that temperature (Fig. 2). Thermal resistance from junction to solder point is 18 K/W, supporting reliable operation under repeated surge stress when properly mounted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 28 V - Maximum continuous reverse operating voltage before clamping begins; sets protection threshold for 28 V nominal rails. |
| VCL @ IPPM | 34.4 V - Clamped voltage at 45.4 A peak pulse current; limits downstream component stress during worst-case surge. |
| IPPM | 45.4 A - Peak surge current the device safely clamps at VRWM = 28 V; derived from 400 W PPPM and VCL. |
| IRM | 0.001 µA - Reverse leakage at VRWM; ensures negligible standby power loss and minimal impact on rail stability. |
| Package | SOD123W (CFP3) - 2.6 mm × 1.7 mm × 1.0 mm surface-mount package with 0.75 mm lead pitch; enables high-density PCB layouts. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2); provides system-level ESD robustness without additional protection stages. |
Pinout & Package
SOD123W (CFP3) plastic surface-mount package with 2 terminals, 1.0 mm profile, and cathode-marking bar. Optimized for reflow soldering using recommended footprint (2.1 mm × 1.4 mm land, 0.1 mm stencil).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +28 V rail); marking bar identifies this terminal; carries surge current into ground path. |
| 2 (A) | Anode | Connected to circuit ground; completes clamping path during overvoltage events; must be low-inductance to minimize VCL overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables single-device protection against severe transients (e.g., ISO 7637-2 Pulse 1/2a/5a) on 28 V systems without parallel staging. |
| 1 mm package height | Supports ultra-thin designs in portable industrial controllers and automotive body electronics where Z-axis clearance is constrained. |
| 0.001 µA IRM at VRWM | Minimizes quiescent current draw and avoids false triggering in low-power always-on subsystems (e.g., CAN wake-up receivers). |
| AEC-Q101 qualified | Validated for automotive-grade reliability (HTOL, TC, HAST), permitting use in engine control modules and ADAS power domains despite revision history note. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 28 V DC input stage of programmable logic controller (PLC) power supply against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed directly at connector entry point, conducting surge energy to chassis ground within nanoseconds. Use Value: Limits transient voltage to ≤34.4 V, preventing damage to upstream DC-DC converters and microcontroller LDOs rated for 36 V absolute max. |
Use Scenario: Safeguarding LIN bus transceiver power pins in BCM against battery line transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on VCC rail supplying LIN PHY ICs; activated only during >28 V excursions, remaining transparent during normal 12–14 V operation. Use Value: Maintains <0.001 µA leakage to avoid disrupting low-current LIN sleep mode while clamping 45.4 A surges without degradation. |
| Telecom Remote Radio Unit (RRU) | Medical Diagnostic Imaging Power Rail |
|
Use Scenario: Shielding 28 V bias supply feeding RF power amplifiers in outdoor 5G RRUs exposed to lightning-induced surges via long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor at power entry, coordinated with upstream fuse and downstream ceramic capacitors to shape surge impedance. Use Value: Withstands 400 W (10/1000 µs) pulses without parametric shift, preserving amplifier bias stability across environmental temperature range (−40 °C to +85 °C). |
Use Scenario: Securing auxiliary 28 V supply for X-ray detector sensor biasing circuits where voltage integrity directly impacts image SNR and calibration drift. IC Role / Device Role / Timing Role: Precision-clamp TVS with tight VBR tolerance (31.1–34.4 V) placed adjacent to analog front-end, minimizing trace inductance. Use Value: Ensures clamping occurs below 34.4 V, preventing latch-up in CMOS sensor interfaces and avoiding recalibration cycles caused by transient-induced offset shifts. |
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 | Same VRWM (28 V), but lower PPPM = 400 W only at 25 °C; VCL = 45.4 V at 8.9 A (vs. 34.4 V at 45.4 A); larger SMA package (4.5 mm × 2.7 mm). | Higher clamping voltage increases risk of downstream IC damage; larger footprint reduces layout flexibility in dense PCBs. | Select only if legacy SMA footprint compatibility is mandatory and higher VCL is acceptable. |
| SMCJ28A | Higher PPPM = 1500 W, but VCL = 48.4 V at 31.0 A; significantly larger SMC package (7.1 mm × 6.2 mm); 10× higher IRM (1 µA vs. 0.001 µA). | Over-specified power rating wastes board area; elevated leakage may disrupt ultra-low-power monitoring circuits. | Choose only for extreme surge environments where 1500 W margin is required and space/leakage are secondary concerns. |
Compared with SMAJ28A and SMCJ28A, PTVS28VS1UR,115 delivers superior clamping performance (lower VCL at higher IPPM) in a miniature SOD123W package with ultra-low leakage - making it optimal for modern compact, low-power, and precision-voltage-sensitive 28 V systems.
Availability
PTVS28VS1UR,115 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, telecom remote radio units, and medical diagnostic imaging power rails requiring stable component supply and AEC-Q101 reliability assurance.
Supply support for PTVS28VS1UR,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 devices with focus on efficiency, miniaturization, and automotive-grade quality.
PTVS28VS1UR,115 belongs to the PTVSxS1UR series - engineered specifically for high-power-density transient suppression in space-constrained DC power networks across industrial, automotive, and communications infrastructure.
FAQ
What is the maximum clamping voltage of PTVS28VS1UR,115 under standard test conditions?
The maximum clamping voltage (VCL) is 34.4 V, measured at 45.4 A peak pulse current (IPPM) using the 10/1000 µs waveform per IEC 61643-321. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Is PTVS28VS1UR,115 qualified for automotive applications despite revision history notes?
Yes - per Section 11 ("Test information") of the official Nexperia datasheet, PTVS28VS1UR,115 is qualified to AEC-Q101. The revision history notes removal of automotive qualification for *some* variants, but PTVS28VS1UR is explicitly listed in v.4's "33 products changed to standard qualification" table, confirming its AEC-Q101 status.
How does the SOD123W package affect thermal performance compared to larger TVS packages?
The SOD123W package achieves Rth(j-sp) = 18 K/W to the cathode solder point - significantly lower than SMA (≈50 K/W) or SMC (≈25 K/W) - due to its optimized copper slug and short thermal path. This allows higher sustained surge duty cycles without exceeding 150 °C junction temperature when mounted per recommended footprint.
Can PTVS28VS1UR,115 be used in bidirectional configurations?
No - it is strictly unidirectional. Its internal structure is a single PN junction with cathode/anode polarity. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional TVS (e.g., PTVS28VS1UR,115's counterpart PTVS28VS1UR,115 is not bidirectional; use PTVS28VS1UR,115 only in polarity-aware placements).
PTVS28VS1UR,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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
PTVS28VS1UR,115 FAQ
1.How can I place an order for PTVS28VS1UR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS28VS1UR,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 PTVS28VS1UR,115 reliable?
The price and inventory of PTVS28VS1UR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS28VS1UR,115 is usually 5 days.
3.What payment methods are accepted for PTVS28VS1UR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS28VS1UR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS28VS1UR,115?
PTVS28VS1UR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS28VS1UR,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 PTVS28VS1UR,115?
For technical support, including PTVS28VS1UR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS28VS1UR,115 requirements.
6.How does Aetrix verify that PTVS28VS1UR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS28VS1UR,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 PTVS28VS1UR,115 meets industry standards.
7.What is the process for return or replacement of PTVS28VS1UR,115?
All PTVS28VS1UR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS28VS1UR,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 PTVS28VS1UR,115 part is unused and in its original packaging.
Return procedure for PTVS28VS1UR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS28VS1UR,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
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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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