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Nexperia USA Inc. PTVS43VS1UR-QX
- Part No.:
- PTVS43VS1UR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS43VS1UR-QX.pdf
- Description:
- PTVS43VS1UR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
PTVS43VS1UR-QX from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) diode in SOD123W (CFP3) package, designed for automotive-grade overvoltage protection at 43 V reverse standoff voltage. It delivers 69.4 A peak pulse current (10/1000 µs), clamps transients to 52.8 V max, and exhibits only 0.001 µA reverse leakage at VRWM - deployed in engine control units, infotainment power rails, and CAN bus interface protection.
For engineers reviewing the PTVS43VS1UR-QX datasheet, PTVS43VS1UR-QX pinout, PTVS43VS1UR-QX application, or PTVS43VS1UR-QX equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping behavior under IEC 61643-321 waveform, and direct replacement guidance for automotive power rail protection designs.
Technical Context
This unidirectional TVS operates as a clamping device in parallel with sensitive circuitry, activating when transient voltage exceeds its 43 V reverse standoff threshold (VRWM). Its silicon avalanche junction achieves precise breakdown at 47.8–52.8 V (VBR min/max), limiting surge energy via controlled avalanche conduction without latch-up.
It complies fully with IEC 61643-321 (10/1000 µs waveform) and withstands 30 kV ESD per IEC 61000-4-2 (contact/air), while maintaining junction temperature ≤150 °C under rated stress. Thermal resistance from junction to solder point is 18 K/W - critical for PCB layout in high-reliability automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43 V - maximum continuous reverse operating voltage before clamping begins; sets minimum system operating margin. |
| VBR (min/max) | 47.8 V / 52.8 V - guaranteed avalanche onset range at 1 mA test current; defines turn-on consistency across temperature and lot. |
| VCL (max) | 52.8 V - maximum clamped voltage at 69.4 A IPPM (10/1000 µs); determines protected IC's absolute overvoltage ceiling. |
| PPPM | 400 W - peak pulse power handling per IEC 61643-321; enables robust suppression of load-dump and ISO 7637-2 pulses. |
| IRM | 0.001 µA - reverse leakage at VRWM; ensures negligible standby current drain in always-on automotive subsystems. |
| Rth(j-sp) | 18 K/W - thermal resistance from junction to cathode solder point; guides copper pour sizing for thermal reliability in under-hood environments. |
| ESD Rating | 30 kV contact / 30 kV air (IEC 61000-4-2); qualifies for direct integration on exposed connectors and external-facing interfaces. |
Pinout & Package
PTVS43VS1UR-QX uses the SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height, flat leads, cathode marked by a bar on the top surface. Optimized for automated placement and reflow soldering per JEDEC MS-012 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +12 V rail); marking bar identifies this terminal; carries full surge current during clamping. |
| 2 (A) | Anode | Connected to ground reference; forms low-impedance path to GND during transient events; requires low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested per Automotive Electronics Council standard - validated for under-hood temperature cycling, humidity, and mechanical shock. |
| Low-profile SOD123W | 1.0 mm max height enables use in space-constrained ECUs and ADAS modules where Z-axis clearance is limited. |
| 400 W peak pulse rating | Handles ISO 7637-2 Pulse 5a (load dump) up to 120 V/200 ms without degradation - supports 12 V automotive systems. |
| 0.001 µA IRM at VRWM | Minimizes quiescent current draw in always-on domains (e.g., body control modules), extending battery life in key-off states. |
| 30 kV ESD immunity | Eliminates need for secondary ESD protection on board-level interfaces like USB-C or LIN transceivers in cabin electronics. |
Applications
| Engine Control Unit (ECU) Power Input | CAN FD Interface Protection |
|---|---|
|
Use Scenario: Protects microcontroller power supply against load-dump transients (ISO 7637-2 Pulse 5a) during alternator regulation failure. IC Role / Device Role: Unidirectional shunt clamp placed between battery rail and DC-DC input, absorbing >400 W surges within 1000 µs. Use Value: Prevents brownout or latch-up of ASIL-B safety-critical MCUs by holding rail voltage ≤52.8 V during 69.4 A surge events. |
Use Scenario: Shields high-speed CAN FD transceivers from coupled noise and ESD on vehicle wiring harnesses. IC Role / Device Role: Bidirectional-capable protection is not required; unidirectional PTVS43VS1UR-QX guards VCC line feeding transceiver bias. Use Value: Maintains signal integrity by suppressing common-mode spikes above 43 V without adding capacitance that degrades 5 Mbps CAN FD eye diagram. |
| Infotainment System USB-C Port | ADAS Camera Module Power Rail |
|
Use Scenario: Secures USB-C VBUS line against hot-plug surges and cable-induced transients in center-stack head units. IC Role / Device Role: Clamps VBUS to ≤52.8 V during 10/1000 µs events while presenting <0.5 pF capacitance to preserve USB 2.0 signal fidelity. Use Value: Enables compliance with USB Type-C specification's 20 V tolerance while avoiding false overvoltage shutdowns in charging circuits. |
Use Scenario: Guards 5 V or 3.3 V imaging sensor power supplies against ignition noise and switching regulator coupling in surround-view cameras. IC Role / Device Role: Mounted directly at camera module connector; clamps fast-rising transients (<1 ns rise time) before reaching CMOS image sensor. Use Value: Reduces pixel corruption and frame drop incidents by limiting rail excursions to <52.8 V - below sensor's absolute maximum rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-Q | Same VRWM (43 V), but lower PPPM (400 W vs. SMAJ series' 400 W); higher VCL (55.5 V max) and larger SMA package (4.5 mm × 2.7 mm). | Less suitable for ultra-thin modules due to 2.2 mm height; higher clamping increases risk of downstream IC damage. | Select only if legacy SMA footprint reuse is required and board height ≥2.2 mm is acceptable. |
| TPSMD43A | Identical VRWM and VCL specs, but rated for 5.0 kW peak pulse (10/1000 µs); 2× larger SMD package (7.1 mm × 6.2 mm). | Over-specified for typical automotive load-dump; excessive size conflicts with compact camera or radar module layouts. | Prefer only for heavy-duty commercial vehicle applications with extreme surge exposure and ample PCB area. |
Compared with SMAJ43A-Q and TPSMD43A, PTVS43VS1UR-QX uniquely balances 400 W surge capability, 1.0 mm profile, and AEC-Q101 qualification - making it optimal for next-gen automotive ECUs, ADAS sensors, and infotainment systems where space, reliability, and standardized qualification are jointly constrained.
Availability
PTVS43VS1UR-QX is available at Aetrix Electronics and suitable for automotive power management, CAN interface protection, and ADAS camera module designs requiring stable component supply across multi-year production cycles.
Supply support for PTVS43VS1UR-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 technologies - delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.
PTVS43VS1UR-QX belongs to the AEC-Q101-qualified PTVSxS1UR-Q series, engineered specifically for automotive-grade transient suppression in 12 V and 24 V systems - emphasizing low leakage, tight VBR tolerance, and minimal package height.
FAQ
What is the maximum clamping voltage of PTVS43VS1UR-QX at rated peak pulse current?
The maximum clamping voltage (VCL) is 52.8 V at 69.4 A peak pulse current (IPPM), measured under IEC 61643-321 10/1000 µs waveform conditions. This value is guaranteed across temperature and manufacturing lots, ensuring consistent protection margin for downstream 5 V or 3.3 V ICs.
Does PTVS43VS1UR-QX support bidirectional transient suppression?
No - PTVS43VS1UR-QX is a unidirectional TVS diode, optimized for clamping positive transients on DC power lines. It conducts only when anode-to-cathode voltage exceeds ~0.7 V forward, and clamps when cathode-to-anode voltage exceeds 43 V. For AC or dual-polarity signals, a dedicated bidirectional variant is required.
How does the SOD123W package impact thermal performance in automotive applications?
The SOD123W package achieves Rth(j-sp) = 18 K/W to the cathode solder point, enabling effective heat transfer to PCB copper pours. In under-hood environments up to 125 °C ambient, this allows sustained operation at 80% of rated PPPM without exceeding 150 °C junction limit - verified per AEC-Q101 thermal cycling tests.
Is PTVS43VS1UR-QX compatible with lead-free reflow soldering profiles?
Yes - the device is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C for ≤30 seconds. The CFP3 footprint (2.1 mm pad length, 1.4 mm width, 0.1 mm stencil thickness) ensures reliable wetting and void-free solder joints in high-volume automotive assembly lines.
PTVS43VS1UR-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SOD-123W
- Series:
- PTVSxS1UR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V (Max)
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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
PTVS43VS1UR-QX FAQ
1.How can I place an order for PTVS43VS1UR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS43VS1UR-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 PTVS43VS1UR-QX reliable?
The price and inventory of PTVS43VS1UR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS43VS1UR-QX is usually 5 days.
3.What payment methods are accepted for PTVS43VS1UR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS43VS1UR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS43VS1UR-QX?
PTVS43VS1UR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS43VS1UR-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 PTVS43VS1UR-QX?
For technical support, including PTVS43VS1UR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS43VS1UR-QX requirements.
6.How does Aetrix verify that PTVS43VS1UR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS43VS1UR-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 PTVS43VS1UR-QX meets industry standards.
7.What is the process for return or replacement of PTVS43VS1UR-QX?
All PTVS43VS1UR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS43VS1UR-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 PTVS43VS1UR-QX part is unused and in its original packaging.
Return procedure for PTVS43VS1UR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS43VS1UR-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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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.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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