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Nexperia USA Inc. PTVS26VS1UR-QX
- Part No.:
- PTVS26VS1UR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS26VS1UR-QX.pdf
- Description:
- PTVS26VS1UR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:9,748
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Product details
Overview
PTVS26VS1UR-QX from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for automotive-grade overvoltage protection at 26 V reverse standoff voltage. It delivers 42.1 A peak pulse current (10/1000 µs), clamps transients to ≤31.9 V, and exhibits ≤0.1 µA reverse leakage at VRWM - deployed in engine control units, infotainment power rails, and ADAS sensor interfaces.
For engineers reviewing the PTVS26VS1UR-QX datasheet, PTVS26VS1UR-QX pinout, PTVS26VS1UR-QX application, or PTVS26VS1UR-QX equivalent, key selection criteria include its AEC-Q101 qualification, 1 mm profile for space-constrained PCB layouts, low clamping ratio (VCL/VRWM ≈ 1.23), and compatibility with IEC 61643-321 surge waveforms.
Technical Context
This unidirectional TVS diode operates as a clamping device in series with power input lines, activating only when transient voltage exceeds 26 V VRWM. Its silicon avalanche structure ensures sub-nanosecond response time and stable breakdown at 28.9–31.9 V (VBR min–max), with thermal resistance to solder point of 18 K/W enabling reliable energy dissipation during repetitive surges.
The device uses a planar junction process optimized for high-reliability automotive environments, supporting continuous operation up to 150 °C junction temperature and surviving 30 kV ESD (IEC 61000-4-2 contact discharge). Its cathode-marked SOD123W footprint aligns with IPC-7351B standard land patterns for reflow and wave soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 26 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min–max) | 28.9 V to 31.9 V - guaranteed avalanche breakdown range at 1 mA test current |
| VCL @ IPPM | ≤31.9 V - clamped voltage under 42.1 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling per IEC 61643-321, enabling robust ISO 7637-2 pulse 5a/b suppression |
| IRM | ≤0.1 µA - ultra-low reverse leakage at VRWM, minimizing standby power loss in battery-critical systems |
| Package | SOD123W (CFP3) - 2.6 × 1.7 × 1.0 mm surface-mount outline with cathode bar marking |
| AEC-Q101 | Qualified - certified for automotive applications including powertrain and chassis modules |
Pinout & Package
SOD123W (CFP3) is a 2-terminal surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm with 1 mm maximum height, optimized for automated placement and high-density PCB layouts. The cathode is marked by a visible bar on the component body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected circuit ground or low-side return path; polarity-sensitive for unidirectional clamping |
| 2 (A) | Anode | Connected to protected line (e.g., 24 V supply rail); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified - validated for temperature cycling, HBM ESD (8 kV), and mechanical shock per automotive reliability standards |
| Low-profile mounting | 1.0 mm max height - enables use in thin automotive ECUs and compact ADAS camera modules without mechanical interference |
| High surge robustness | 400 W PPPM (10/1000 µs) - suppresses ISO 7637-2 Pulse 5a (50 V/100 ms) and Pulse 5b (100 V/100 ms) without degradation |
| Low leakage performance | ≤0.1 µA IRM at 26 V - preserves battery life in always-on vehicle networks (e.g., CAN FD wake-up circuits) |
| ESD resilience | 30 kV contact / 30 kV air discharge (IEC 61000-4-2) - protects against human-body and system-level electrostatic events |
Applications
| Engine Control Unit (ECU) Power Input | Infotainment System USB-C Port |
|---|---|
|
Use Scenario: Protection of 24 V supply rail against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery feed and DC-DC converter input. Use Value: Limits voltage to ≤31.9 V during 120 V/400 ms transients, preventing damage to 36 V-rated buck controllers. |
Use Scenario: Surge suppression on VBUS line of automotive-grade USB-C ports exposed to hot-plug and cable coupling events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V–20 V programmable power supply (PPS) path. Use Value: Sub-ns response ensures clamping before USB PD controller ICs experience latch-up or gate oxide stress. |
| ADAS Camera Module Power Rail | Body Control Module (BCM) LIN Bus Interface |
|
Use Scenario: Protecting 12 V imaging sensor power input from ignition-induced spikes and relay switching noise. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke, directly at image sensor PMIC input. Use Value: 1 mm height allows placement adjacent to 3.5 mm tall camera connectors without Z-axis conflict. |
Use Scenario: Safeguarding LIN transceiver VCC pin against battery disconnection surges and ESD during service operations. IC Role / Device Role / Timing Role: Low-leakage TVS connected between LIN bus VCC and chassis ground. Use Value: ≤0.1 µA IRM avoids loading 12 V LIN regulator output, maintaining bus timing integrity under sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-Q | Lower PPPM (400 W same), but higher VCL (38.9 V) and larger SMA package (4.5 × 2.7 × 2.2 mm) | Not suitable for 1 mm height-constrained automotive modules; requires larger PCB area | Select when legacy SMA footprint compatibility is required and board height is not constrained. |
| TPSMD26H-Q | Same VRWM and VCL, but rated for 500 W PPPM and qualified to AEC-Q101 Grade 0 (−55 °C to +175 °C) | Supports extended temperature range for under-hood applications beyond standard AEC-Q101 Grade 1 | Choose for engine bay locations exceeding 150 °C ambient or requiring higher surge margin. |
Compared with SMAJ26A-Q and TPSMD26H-Q, PTVS26VS1UR-QX offers optimal balance of ultra-low profile (1 mm), AEC-Q101 Grade 1 compliance, and precise 26 V clamping for cabin-located electronics where space and cost are critical.
Availability
PTVS26VS1UR-QX is available at Aetrix Electronics and suitable for automotive power supply protection, ADAS camera module design, and body control module development requiring stable component supply across multi-year production cycles.
Supply support for PTVS26VS1UR-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, high-reliability discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The PTVSxS1UR-Q series belongs to Nexperia's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in automotive power networks where space, thermal performance, and long-term reliability are non-negotiable.
FAQ
What is the maximum clamping voltage of PTVS26VS1UR-QX under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 31.9 V at 42.1 A peak pulse current, measured per IEC 61643-321. This value is guaranteed across temperature and lifetime, ensuring consistent protection margin for 24 V automotive systems.
Does PTVS26VS1UR-QX support bidirectional transient suppression?
No - it is a unidirectional TVS diode with cathode (K) and anode (A) terminals. It clamps only positive transients relative to ground. For bidirectional protection, two devices in series-opposing configuration or a dedicated bidirectional part like PTVS26VS1UR-Q must be used.
How does the SOD123W package affect thermal performance in high-density PCB layouts?
With Rth(j-sp) = 18 K/W to the cathode solder point, the SOD123W package enables efficient heat transfer to copper pour even in tight layouts. Its 1 mm height avoids shadowing adjacent components, and the standardized footprint supports automated optical inspection and rework.
Is PTVS26VS1UR-QX compatible with lead-free reflow soldering profiles?
Yes - it is qualified for standard JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C. The CFP3 package withstands multiple reflow cycles, and Nexperia provides recommended stencil thickness (0.1 mm) and land pattern dimensions in the datasheet.
PTVS26VS1UR-QX 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):
- 26V (Max)
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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
PTVS26VS1UR-QX FAQ
1.How can I place an order for PTVS26VS1UR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS26VS1UR-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 PTVS26VS1UR-QX reliable?
The price and inventory of PTVS26VS1UR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS26VS1UR-QX is usually 5 days.
3.What payment methods are accepted for PTVS26VS1UR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS26VS1UR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS26VS1UR-QX?
PTVS26VS1UR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS26VS1UR-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 PTVS26VS1UR-QX?
For technical support, including PTVS26VS1UR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS26VS1UR-QX requirements.
6.How does Aetrix verify that PTVS26VS1UR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS26VS1UR-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 PTVS26VS1UR-QX meets industry standards.
7.What is the process for return or replacement of PTVS26VS1UR-QX?
All PTVS26VS1UR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS26VS1UR-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 PTVS26VS1UR-QX part is unused and in its original packaging.
Return procedure for PTVS26VS1UR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS26VS1UR-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
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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