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Nexperia USA Inc. PTVS45VS1UTR-QX
- Part No.:
- PTVS45VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS45VS1UTR-QX.pdf
- Description:
- PTVS45VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:3,910
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PTVS45VS1UTR-QX from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature transient overvoltage protection in automotive power rails. It features VRWM = 45 V, VBR(min) = 50.0 V, VCL(max) = 72.7 V at IPPM = 5.5 A (10/1000 µs), and operates up to Tj = 185 °C.
For engineers reviewing the PTVS45VS1UTR-QX datasheet, PTVS45VS1UTR-QX pinout, PTVS45VS1UTR-QX application, or PTVS45VS1UTR-QX equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance values, clamping behavior under surge, and automotive-grade mounting guidance - all critical for robust power rail protection design.
Technical Context
This TVS diode operates in reverse-biased mode with cathode-anode polarity, triggering avalanche breakdown above its 45 V standoff voltage to clamp transients. Its 72.7 V clamping voltage at 5.5 A ensures safe voltage limiting for 48 V automotive systems during ISO 7637-2 pulse 1/2a/5a events.
Rated for 400 W peak pulse power per IEC 61643-321 (10/1000 µs), it maintains stable performance across −55 °C to +185 °C ambient, supported by low Rth(j-sp) = 18 K/W and AEC-Q101 qualification for under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 45 V - Maximum continuous reverse operating voltage before clamping begins; defines system operating margin for 48 V nominal rails. |
| VBR (min) | 50.0 V - Minimum breakdown voltage at 1 mA; guarantees reliable turn-on above normal operating voltage. |
| VCL (max) | 72.7 V - Maximum clamped voltage at 5.5 A peak current; determines downstream IC survivability during surge. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform; enables protection against high-energy load dump transients. |
| IRM | 0.001 µA - Reverse leakage at VRWM; ensures negligible standby current in battery-sensitive automotive modules. |
| Tj max | 185 °C - Maximum junction temperature; supports placement near power converters or engine control units without derating. |
| Rth(j-sp) | 18 K/W - Junction-to-solder-point thermal resistance; enables effective heat transfer through cathode pad in compact layouts. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height, flat lead profile optimized for automated assembly and thermal relief on PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 48 V rail); marking bar identifies this terminal; carries full surge current during clamping. |
| 2 (A) | Anode | Connected to ground reference; completes avalanche path; requires low-inductance grounding for fast response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test standard; eliminates need for requalification in Tier 1 designs. |
| 185 °C junction rating | Enables direct placement on high-temperature PCB zones (e.g., near DC-DC converters or motor drivers) without thermal derating. |
| 1 mm profile | Reduces board space and improves airflow in stacked or confined enclosures; compatible with standard SOD123W footprints. |
| 30 kV ESD rating | Withstands contact/air discharge per IEC 61000-4-2; protects against handling and system-level ESD events pre-deployment. |
| Low IRM (0.001 µA) | Minimizes quiescent current drain in always-on vehicle modules (e.g., CAN gateways, body controllers), preserving battery life. |
Applications
| 48 V Mild Hybrid Power Rail Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Suppresses load dump and jump-start transients on 48 V bus feeding DC-DC converters and motor drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 48 V rail and chassis ground; responds within nanoseconds to limit voltage to ≤72.7 V. Use Value: Prevents damage to 65 V-rated MOSFETs and buck controllers during ISO 16750-2 pulse 5a (100 V/100 ms), maintaining system uptime. |
Use Scenario: Protects LIN/CAN interface power inputs and microcontroller supply pins from battery reversal and inductive switching noise. IC Role / Device Role / Timing Role: Standoff-clamp device on 12 V/5 V local regulators; activated only during >45 V surges. Use Value: Eliminates need for redundant input filtering while meeting AEC-Q100 Grade 2 temperature requirements (−40 °C to +105 °C ambient). |
| Industrial 48 V PoE++ Power Sourcing Equipment | High-Temperature Motor Drive Gate Driver Supply |
Use Scenario: Shields 48 V power delivery circuitry in industrial switches and base stations from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PSE output stage; coordinates with upstream fuses for coordinated protection. Use Value: Withstands repeated 400 W pulses without degradation, enabling compliance with IEEE 802.3bt Type 4 (90 W) surge immunity testing. |
Use Scenario: Guards isolated gate driver bias supplies in HVAC compressors and traction inverters exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Secondary protection after primary TVS; placed directly at driver IC VDD pin to suppress MOSFET switching spikes. Use Value: Maintains clamping performance at 150 °C junction temperature, preventing false triggering or thermal runaway in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ45A-Q | Lower PPPM (400 W same), but VRWM = 45 V, VCL = 73.0 V at 5.5 A; Rth(j-a) = 70 K/W vs. 18 K/W (j-sp) | Not AEC-Q101 qualified; rated only to 150 °C junction; lacks automotive traceability documentation | Acceptable for non-automotive industrial 48 V rails where thermal management allows higher Rth(j-a) and qualification isn't required. |
| TPSMD45CA | Bidirectional configuration; VRWM = 45 V, VCL = 73.0 V at 5.5 A; same 400 W rating; Tj max = 175 °C | Clamps both polarities - unnecessary overhead for unidirectional 48 V systems; adds cost and layout complexity | Only suitable if bidirectional protection is explicitly needed (e.g., shared signal/power lines subject to reverse polarity faults). |
Compared with SMAJ45A-Q and TPSMD45CA, PTVS45VS1UTR-QX offers superior thermal performance via low Rth(j-sp), guaranteed AEC-Q101 compliance, and 185 °C operation - making it the optimal choice for space-constrained, high-reliability automotive 48 V power domains.
Availability
PTVS45VS1UTR-QX is available at Aetrix Electronics and suitable for automotive power rail protection, industrial 48 V PoE++ equipment, and high-temperature motor drive designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PTVS45VS1UTR-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 delivering high-performance, high-reliability discrete, logic, and MOSFET solutions with focus on automotive, industrial, and mobile markets.
The PTVSxS1UTR-Q series targets automotive-grade transient suppression, engineered specifically for AEC-Q101 compliance, high-temperature resilience, and compact SMD integration in next-generation 12 V/48 V hybrid architectures.
FAQ
What is the maximum clamping voltage of PTVS45VS1UTR-QX at its rated peak pulse current?
The maximum clamping voltage (VCL) is 72.7 V at IPPM = 5.5 A under 10/1000 µs waveform conditions. This value is measured at Tj = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events, ensuring compatibility with 65 V-rated downstream components.
Is PTVS45VS1UTR-QX suitable for 48 V mild hybrid vehicle applications?
Yes - it is AEC-Q101 qualified, rated for Tj up to 185 °C, and specified with VRWM = 45 V and VCL = 72.7 V, aligning precisely with ISO 16750-2 load dump (100 V/100 ms) and pulse 5a requirements for 48 V systems. Its SOD123W footprint supports dense power module layouts.
How does the thermal resistance Rth(j-sp) benefit PCB layout?
Rth(j-sp) = 18 K/W indicates efficient heat conduction from junction to solder point - primarily through the cathode pad. This allows designers to use localized copper pour under the cathode to dissipate surge energy without requiring large thermal vias or external heatsinks, simplifying layout in constrained automotive ECUs.
What marking code identifies PTVS45VS1UTR-QX on the device body?
The marking code is "CX", printed adjacent to the cathode bar on the SOD123W package. This matches Table 4 in the Nexperia datasheet and enables rapid visual verification during incoming inspection or rework without requiring magnification or electrical test.
PTVS45VS1UTR-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-123W
- Series:
- PTVSxS1UTR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 45V (Max)
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- 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
PTVS45VS1UTR-QX FAQ
1.How can I place an order for PTVS45VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS45VS1UTR-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 PTVS45VS1UTR-QX reliable?
The price and inventory of PTVS45VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS45VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS45VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS45VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS45VS1UTR-QX?
PTVS45VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS45VS1UTR-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 PTVS45VS1UTR-QX?
For technical support, including PTVS45VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS45VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS45VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS45VS1UTR-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 PTVS45VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS45VS1UTR-QX?
All PTVS45VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS45VS1UTR-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 PTVS45VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS45VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS45VS1UTR-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
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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