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Nexperia USA Inc. PTVS26VS1UR/8X
- Part No.:
- PTVS26VS1UR/8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS26VS1UR/8X.pdf
- Description:
- TVS DIODE 26VWM 42.1VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:3,868
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Product details
Overview
PTVS26VS1UR/8X 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 VRWM = 26 V, VBR(min) = 28.9 V, VCL(max) = 42.1 V at IPPM = 9.5 A (10/1000 µs), and IRM ≤ 0.001 µA - enabling robust protection in space-constrained industrial power supplies.
For engineers reviewing the PTVS26VS1UR/8X datasheet, PTVS26VS1UR/8X pinout, PTVS26VS1UR/8X application, or PTVS26VS1UR/8X equivalent, key selection criteria include clamping voltage margin relative to system rail, peak pulse current handling under IEC 61643-321 waveform, thermal resistance to PCB copper area, cathode-anode polarity marking, and qualification status for automotive use.
Technical Context
This unidirectional TVS operates as a reverse-biased avalanche diode, triggering when transient voltage exceeds its 26 V standoff level and clamping to ≤42.1 V at 9.5 A peak pulse current. Its 1 mm profile and SOD123W footprint support high-density PCB layouts while maintaining 400 W peak pulse power per IEC 61643-321 (10/1000 µs).
Thermal performance depends on PCB mounting: Rth(j-a) ranges from 70 K/W (ceramic) to 220 K/W (FR4 single-sided), and Rth(j-sp) is 18 K/W at the cathode solder point. The device is AEC-Q101 qualified per revision history, though automotive applicability is conditional on specific part-number qualification status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 26 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 28.9 V - minimum breakdown voltage at 1 mA test current, defining turn-on threshold |
| VCL (max) | 42.1 V - maximum clamped voltage at 9.5 A IPPM, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power rating for 10/1000 µs waveform, defining surge energy capacity |
| IRM | ≤0.001 µA - reverse leakage at VRWM, ensuring minimal standby power loss |
| Rth(j-sp) | 18 K/W - junction-to-solder-point thermal resistance, critical for sustained surge duty cycle |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2), supporting robust board-level ESD immunity |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +26 V rail); marking bar identifies this terminal |
| 2 (A) | Anode | Connected to ground reference; polarity must be observed to ensure proper clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | 1 mm height enables use in ultra-thin power modules and compact consumer electronics |
| High surge capability | 400 W peak pulse power supports IEC 61000-4-5 Level 4 (4 kV) surge immunity designs |
| Tight VBR tolerance | Min–max spread of 28.9 V to 31.9 V ensures predictable clamping onset across production lots |
| AEC-Q101 qualification | Qualified per revision history for automotive-grade reliability in non-safety-critical subsystems |
| Low leakage current | ≤0.001 µA at 26 V reduces quiescent power drain in battery-backed systems |
Applications
| Industrial Power Supply Protection | DC Motor Drive Control Board |
|---|---|
|
Use Scenario: Protecting 24 V DC input stage of programmable logic controller (PLC) power module against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and GND, clamping surges within 1 ns response time. Use Value: Limits transient voltage to ≤42.1 V, preventing damage to upstream DC-DC controllers and downstream microcontrollers rated for 36 V absolute max. |
Use Scenario: Safeguarding gate driver supply rail in 24 V brushed DC motor H-bridge against back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Clamping diode mounted directly at driver IC VDD pin, with cathode tied to 24 V rail and anode to GND. Use Value: Absorbs 9.5 A peak pulses without degradation, preserving gate driver functionality and preventing false shutdowns during high-dV/dt events. |
| Telecom Remote Power Feeding | Factory Automation Sensor Node |
|
Use Scenario: Protecting 24–48 V PoE-powered remote radio unit (RRU) front-end from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on DC input path, coordinated with downstream MOVs and gas discharge tubes. Use Value: Provides fast-response clamping (sub-nanosecond) with low VCL, reducing let-through energy to <100 mJ and extending secondary protection lifetime. |
Use Scenario: Shielding 24 V analog sensor interface (4–20 mA loop powered) from ESD and cable coupling noise in robotic cell environments. IC Role / Device Role / Timing Role: Localized protection at sensor connector entry point, leveraging SOD123W's small footprint for dense I/O modules. Use Value: Delivers 30 kV ESD immunity and <0.001 µA leakage, ensuring signal integrity and zero impact on loop calibration accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Same VRWM (26 V), but lower PPPM = 400 W only at 10/1000 µs; VCL = 42.5 V at 9.2 A; SMA package (2.5 mm height) | Higher profile limits use in ultra-low-height assemblies; identical clamping performance but less optimized for automated SMT placement | Select when legacy SMA footprint compatibility is required and 1 mm height constraint does not apply |
| SMCJ26A | Higher PPPM = 1500 W, larger DO-214AB package (4.5 mm height), VCL = 42.1 V at 35.7 A | Over-specified for 400 W needs; better suited for primary surge protection, not local rail clamping | Choose only if system-level surge requirements exceed IEC 61000-4-5 Level 4 or if thermal mass demands larger package |
Compared with SMAJ26A and SMCJ26A, PTVS26VS1UR/8X delivers identical clamping voltage at rated current but in a 1 mm-height SOD123W package - making it optimal for space-limited, high-density 24 V industrial power nodes where mechanical clearance and SMT process yield are critical.
Availability
PTVS26VS1UR/8X is available at Aetrix Electronics and suitable for industrial power supply protection, DC motor drive control boards, telecom remote power feeding, and factory automation sensor nodes requiring stable component supply and consistent surge performance across production batches.
Supply support for PTVS26VS1UR/8X 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The PTVSxS1UR series targets cost-sensitive, space-constrained industrial and automotive subsystems requiring standardized, AEC-Q101-qualified TVS protection with tight parametric consistency and proven surge endurance.
FAQ
Is PTVS26VS1UR/8X qualified for automotive applications?
Yes - per the revision history in the official Nexperia datasheet (v.4, Dec 2025), PTVS26VS1UR/8X is among the 33 types explicitly changed to standard AEC-Q101 qualification status. It meets Stress Test Qualification for Discrete Semiconductors but is not intended for safety-critical systems like airbag or braking control.
What is the maximum clamping voltage at 5 A transient current?
Per Table 8 of the datasheet, at Tj = 25 °C and IPPM = 9.5 A (10/1000 µs), VCL(max) = 42.1 V. For 5 A, interpolation yields ~38.5 V - confirmed by the typical V-I curve (Fig. 4), where clamping voltage scales sublinearly with current below rated IPPM.
Can PTVS26VS1UR/8X replace PTVS24VS1UR in a 24 V system?
No - VRWM is fixed at 26 V, meaning it begins clamping above 26 V. In a nominal 24 V system with ±10 % tolerance (up to 26.4 V), this part may conduct during normal operation. Use PTVS24VS1UR (VRWM = 24 V) or PTVS22VS1UR (VRWM = 22 V) for tighter margin.
How does PCB layout affect thermal performance?
Thermal resistance varies significantly with copper area: Rth(j-a) drops from 220 K/W (FR4, minimal pad) to 70 K/W (Al₂O₃ ceramic). For reliable 400 W surge handling, Nexperia recommends ≥1 cm² cathode-side copper pour and use of thermal vias to internal ground planes per the SOD123W footprint guidelines.
PTVS26VS1UR/8X 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
- 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/8X FAQ
1.How can I place an order for PTVS26VS1UR/8X through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS26VS1UR/8X 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/8X reliable?
The price and inventory of PTVS26VS1UR/8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS26VS1UR/8X is usually 5 days.
3.What payment methods are accepted for PTVS26VS1UR/8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS26VS1UR/8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS26VS1UR/8X?
PTVS26VS1UR/8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS26VS1UR/8X 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/8X?
For technical support, including PTVS26VS1UR/8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS26VS1UR/8X requirements.
6.How does Aetrix verify that PTVS26VS1UR/8X is sourced from the original manufacturer or authorized distributors?
All PTVS26VS1UR/8X 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/8X meets industry standards.
7.What is the process for return or replacement of PTVS26VS1UR/8X?
All PTVS26VS1UR/8X units undergo pre-shipment inspection (PSI). If there is an issue with PTVS26VS1UR/8X, 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/8X part is unused and in its original packaging.
Return procedure for PTVS26VS1UR/8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS26VS1UR/8X 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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