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Nexperia USA Inc. PTVS28VP1UTP-QX
- Part No.:
- PTVS28VP1UTP-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-128
- Datasheet:
-
PTVS28VP1UTP-QX.pdf
- Description:
- PTVS28VP1UTP-Q/SOD128/FLATPOWE
- Quantity:
- Payment:
- Shipping:
Inventory:2,205
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Product details
Overview
PTVS28VP1UTP-QX from Nexperia is a unidirectional 600 W Transient Voltage Suppressor (TVS) in SOD128 (CFP5) package, designed for high-temperature transient overvoltage protection in automotive power rails. Confirmed parameters: VRWM = 28 V, VBR(min) = 31.1 V, VCL(max) = 45.4 V at IPPM = 13.2 A (10/1000 µs), Tj ≤ 185 °C, and AEC-Q101 qualified.
For engineers reviewing the PTVS28VP1UTP-QX datasheet, PTVS28VP1UTP-QX pinout, PTVS28VP1UTP-QX application, or PTVS28VP1UTP-QX equivalent, key selection criteria include clamping voltage under 45.4 V at 13.2 A surge, 28 V standoff capability, 1 mm profile for space-constrained PCB layouts, and guaranteed operation up to 185 °C junction temperature in engine bay or powertrain modules.
Technical Context
This unidirectional TVS diode operates as a shunt protector: it remains high-impedance below 28 V reverse standoff voltage, then avalanches sharply above 31.1 V breakdown to clamp transients. Its silicon junction is optimized for stable VBR and low IRM (≤0.001 µA) across −55 °C to +185 °C ambient.
Thermal design is enabled by Rth(j-sp) = 12 K/W to cathode solder point and Rth(j-a) = 60 K/W on ceramic PCB - critical for sustained pulse handling in automotive power management where thermal cycling and board layout constraints dominate reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 28 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin for 24 V automotive systems. |
| VBR (min) | 31.1 V - guaranteed avalanche initiation voltage at 10 mA; ensures robust turn-on margin above VRWM. |
| VCL (max) | 45.4 V - peak clamped voltage at 13.2 A (10/1000 µs); limits downstream IC stress during ISO 7637-2 Pulse 1/2a/5a events. |
| PPPM | 600 W - rated peak pulse power per IEC 61643-321; enables single-device protection against 100 V/10 Ω load dump surges. |
| Tj max | 185 °C - maximum junction temperature; supports placement near power MOSFETs or DC-DC converters without derating. |
| ESD rating | ±30 kV contact discharge (IEC 61000-4-2); provides system-level ESD immunity without additional front-end protection. |
| AEC-Q101 | Qualified - meets stress test requirements for discrete semiconductors in automotive applications; valid for under-hood use. |
Pinout & Package
SOD128 (CFP5) plastic surface-mounted package: 2-terminal, 3.8 mm × 2.6 mm × 1.0 mm body, 4 mm lead pitch, marking bar indicates cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 24 V rail); absorbs surge current into ground path when clamping. |
| 2 (A) | Anode | Connected to system ground; completes conduction path during transient event; requires low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature stability | Operates reliably up to 185 °C junction temperature - eliminates thermal derating in engine control units and battery management systems. |
| Low-profile SMD package | 1.0 mm height - enables placement beneath connectors or in tight power module layouts without mechanical interference. |
| Automotive qualification | AEC-Q101 certified - validated for vibration, temperature cycling, and humidity resistance required in production vehicles. |
| Low leakage current | IRM ≤ 0.001 µA at VRWM - prevents parasitic drain in always-on vehicle networks (e.g., CAN wake-up circuits). |
| Fast response time | <1 ns turn-on - clamps ESD and lightning-induced transients before sensitive MCU or sensor inputs are damaged. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Infotainment Power Rail |
|---|---|
Use Scenario: Protects 24 V supply input of diesel/gasoline ECU against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector entry point; clamps transients within nanoseconds to limit voltage seen by DC-DC converter input. Use Value: Maintains VCL ≤ 45.4 V during 13.2 A surge, preventing overvoltage shutdown or latch-up of primary buck regulator. |
Use Scenario: Safeguards 12 V rail feeding display controller, audio amplifier, and USB-C PD interface in head unit. IC Role / Device Role / Timing Role: Unidirectional suppressor on main power feed; coordinates with upstream fuse and downstream LC filters to meet CISPR 25 Class 5 emission limits. Use Value: Withstands repeated 30 kV ESD events without degradation, ensuring long-term reliability of touch-sensitive UI components. |
| Electric Power Steering (EPS) Motor Driver | On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: Shields gate driver ICs and current sense amplifiers from inductive kickback during H-bridge switching in EPS motor control. IC Role / Device Role / Timing Role: Localized TVS at motor driver power input; placed adjacent to MOSFET source pads to minimize loop inductance. Use Value: 185 °C Tj rating allows mounting on same heatsink as power stage, eliminating separate thermal management for protection circuitry. |
Use Scenario: Guards 15 V auxiliary supply powering OBC microcontroller, communication isolators, and status LEDs during AC/DC conversion. IC Role / Device Role / Timing Role: Standoff-rated protector between secondary-side rectifier and LDO input; blocks cross-coupled noise from high-frequency transformer leakage. Use Value: 0.001 µA IRM prevents measurable quiescent current increase - critical for meeting EU CO2 fleet emission compliance in parked-state monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-Q | Lower PPPM (400 W), higher VCL (48.4 V at 12.3 A), same SOD-123 package but not AEC-Q101 qualified. | Limited to non-safety-critical cabin modules; unsuitable for under-hood use due to 150 °C Tj max. | Select only if cost sensitivity outweighs thermal and qualification requirements. |
| TPSMA6L28A | Same VRWM/VBR specs, but lower Tj max (175 °C), no AEC-Q101 documentation, and higher IRM (1 µA vs. 0.001 µA). | Acceptable for industrial power supplies; not recommended for automotive battery monitoring where ultra-low leakage is mandatory. | Prefer only for legacy designs already using SMA package footprint and tolerating 1000× higher leakage. |
Compared with SMAJ28A-Q and TPSMA6L28A, PTVS28VP1UTP-QX delivers superior thermal resilience (185 °C), verified automotive qualification, and 1000× lower leakage - making it the sole choice for next-generation ADAS domain controllers and 48 V mild-hybrid power architectures.
Availability
PTVS28VP1UTP-QX is available at Aetrix Electronics and suitable for automotive power supply protection, electric power steering systems, and on-board charger auxiliary rails requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PTVS28VP1UTP-QX 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 essential efficiency-enhancing components, with leadership in logic, discretes, and MOSFETs for automotive, industrial, and mobile markets.
The PTVSxP1UTP-Q series belongs to Nexperia's high-reliability automotive TVS portfolio, engineered specifically for transient suppression in harsh-environment power electronics where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage for PTVS28VP1UTP-QX at its rated peak pulse current?
The maximum clamping voltage (VCL) is 45.4 V at IPPM = 13.2 A under the standardized 10/1000 µs waveform per IEC 61643-321. This value is measured at Tj = 25 °C and guarantees worst-case voltage limiting during surge events, enabling accurate downstream IC overvoltage margining.
Does PTVS28VP1UTP-QX require derating at elevated ambient temperatures?
Yes - its rated peak pulse power (PPPM) decreases with rising junction temperature, following a typical curve of 100% at 25 °C down to ~60% at 150 °C and ~40% at 185 °C. Designers must apply thermal modeling using Rth(j-sp) = 12 K/W to ensure actual Tj stays within limits during repetitive surge conditions.
How is polarity identified on the PTVS28VP1UTP-QX package?
Polarity is marked by a white or black bar on the cathode end of the SOD128 body. Pin 1 (cathode) is the terminal adjacent to the marking bar; this aligns with the standard SOD128 outline and matches the "K" designation in Nexperia's pinning table and schematic symbol.
Can PTVS28VP1UTP-QX replace older PTVS28VP1UTP parts in existing designs?
Yes - PTVS28VP1UTP-QX is a direct replacement for PTVS28VP1UTP with identical electrical specifications, package dimensions, and pinout. The "-QX" suffix denotes enhanced traceability and full AEC-Q101 requalification per the November 2025 datasheet revision, supporting long-term automotive program continuity.
PTVS28VP1UTP-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-128
- Series:
- PTVSxP1UP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28V (Max)
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 13.2A
- Power - Peak Pulse:
- 600W
- 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-128/CFP5
PTVS28VP1UTP-QX FAQ
1.How can I place an order for PTVS28VP1UTP-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS28VP1UTP-QX 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 PTVS28VP1UTP-QX reliable?
The price and inventory of PTVS28VP1UTP-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS28VP1UTP-QX is usually 5 days.
3.What payment methods are accepted for PTVS28VP1UTP-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS28VP1UTP-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS28VP1UTP-QX?
PTVS28VP1UTP-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS28VP1UTP-QX 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 PTVS28VP1UTP-QX?
For technical support, including PTVS28VP1UTP-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS28VP1UTP-QX requirements.
6.How does Aetrix verify that PTVS28VP1UTP-QX is sourced from the original manufacturer or authorized distributors?
All PTVS28VP1UTP-QX 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 PTVS28VP1UTP-QX meets industry standards.
7.What is the process for return or replacement of PTVS28VP1UTP-QX?
All PTVS28VP1UTP-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS28VP1UTP-QX, 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 PTVS28VP1UTP-QX part is unused and in its original packaging.
Return procedure for PTVS28VP1UTP-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS28VP1UTP-QX 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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