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Nexperia USA Inc. PTVS26VS1UTR-QX
- Part No.:
- PTVS26VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS26VS1UTR-QX.pdf
- Description:
- PTVS26VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
PTVS26VS1UTR-Q from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature overvoltage protection in automotive power rails. It features VRWM = 26 V, VBR(min) = 28.9 V, VCL = 42.1 V at IPPM = 9.5 A (10/1000 µs), and operates up to Tj = 185 °C.
For engineers reviewing the PTVS26VS1UTR-Q datasheet, PTVS26VS1UTR-Q pinout, PTVS26VS1UTR-Q application, or PTVS26VS1UTR-Q equivalent, key selection criteria include clamping voltage under peak pulse current, thermal resistance to solder point (Rth(j-sp) = 18 K/W), AEC-Q101 qualification, and low-profile 1 mm height for space-constrained PCB layouts.
Technical Context
This TVS diode uses a planar silicon junction structure optimized for fast response (<1 ns) to transient surges per IEC 61643-321 (10/1000 µs waveform). Its unidirectional configuration provides reverse-biased clamping only, with cathode-anode polarity defined by the marking bar.
Thermal design relies on low Rth(j-sp) = 18 K/W to sustain 400 W peak pulse power at elevated junction temperatures. The device maintains stable VBR and VRWM across −55 °C to +185 °C ambient, with SZ = 0.5 mV/K temperature coefficient for predictable clamping behavior in engine bay or powertrain modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 26 V - Maximum continuous reverse operating voltage before clamping initiates; sets minimum system rail margin. |
| VBR (min) | 28.9 V at IR = 1 mA - Guaranteed breakdown onset; ensures reliable turn-on above nominal rail. |
| VCL | 42.1 V at IPPM = 9.5 A - Clamped voltage during 10/1000 µs surge; defines maximum stress on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling per IEC 61643-321; enables robust protection against ISO 7637-2 pulses. |
| Rth(j-sp) | 18 K/W - Thermal resistance from junction to cathode solder point; critical for sustained surge duty in high-Tamb environments. |
| Tj max | 185 °C - Maximum junction temperature; supports operation in under-hood automotive locations without derating. |
| IRM | 0.001 µA at VRWM - Ultra-low leakage; avoids parasitic drain in always-on 12 V/24 V systems. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat leads, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to protected line (e.g., 24 V rail); marking bar identifies this terminal for correct orientation. |
| 2 | Anode (A) | Connected to ground reference; forms low-impedance path during transient events to shunt surge current. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test standard; eliminates need for additional qualification testing in Tier-1 designs. |
| 185 °C junction rating | Enables placement near heat sources (e.g., power converters, ECUs) without thermal derating of PPPM. |
| 1 mm profile | Minimizes board space and improves airflow in dense power modules; compatible with automated optical inspection (AOI). |
| 30 kV ESD rating | Withstands contact/air discharge per IEC 61000-4-2; protects against handling and system-level ESD events. |
| Low Rth(j-sp) | 18 K/W enables efficient heat transfer to PCB copper; sustains repeated 400 W pulses without thermal runaway. |
Applications
| Automotive Power Rail Protection | Industrial 24 V DC Power Supply |
|---|---|
Use Scenario: Protecting 24 V battery-fed circuits (e.g., ADAS camera modules, body control units) from load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse-polarity surges and inductive spikes on supply lines within nanoseconds. Use Value: Limits voltage to ≤42.1 V during 9.5 A surge, preventing latch-up or damage to 36 V-rated PMICs and microcontrollers. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and industrial sensors powered from 24 V DC rails exposed to motor switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at power entry to absorb repetitive 10/1000 µs surges. Use Value: Maintains <0.001 µA leakage at 26 V, avoiding false triggering or power loss in low-current standby modes. |
| High-Temperature Engine Control Unit | Automotive Lighting Driver Protection |
Use Scenario: Overvoltage protection for fuel injector drivers and ignition coils mounted in engine compartments where ambient exceeds 125 °C. IC Role / Device Role / Timing Role: High-temperature-stable TVS absorbing back-EMF spikes while maintaining clamping performance up to Tj = 185 °C. Use Value: Stable VBR and VRWM across temperature (SZ = 0.5 mV/K) ensure consistent protection margin without recalibration. |
Use Scenario: Protecting LED headlamp drivers from load dump and jump-start transients in 24 V vehicle architectures. IC Role / Device Role / Timing Role: Primary clamping device on input rail, coordinated with upstream fuses and secondary filtering. Use Value: 400 W PPPM handles full ISO 16750-2 load dump energy (≥100 J) when used with appropriate trace inductance and layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Lower PPPM = 400 W but rated at 25 °C only; Rth(j-a) = 70 K/W vs. 18 K/W; no AEC-Q101 qualification. | Not qualified for automotive; requires larger thermal pad or forced cooling for equivalent high-temp performance. | Select only for non-automotive industrial use where AEC-Q101 and 185 °C operation are not required. |
| SMCJ26A-Q | AEC-Q101 qualified, same VRWM/VCL, but SMC (DO-214AB) package: 7.1 mm × 6.2 mm × 2.6 mm - 4× larger footprint and 2.6× height. | Acceptable for under-dash modules with space margin; unsuitable for compact ADAS or lighting PCBs. | Choose when higher thermal mass is needed for infrequent high-energy surges, and board area permits larger package. |
Compared with SMAJ26A and SMCJ26A-Q, PTVS26VS1UTR-Q delivers identical 26 V protection with superior thermal efficiency (Rth(j-sp) = 18 K/W), AEC-Q101 compliance, and ultra-low 1 mm profile-enabling direct replacement in space- and temperature-constrained automotive power designs without layout revision.
Availability
PTVS26VS1UTR-Q is available at Aetrix Electronics and suitable for automotive power rail protection, industrial 24 V DC supplies, and high-temperature engine control unit designs requiring stable component supply and long-term lifecycle support.
Supply support for PTVS26VS1UTR-Q 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-grade components.
The PTVSxS1UTR-Q series targets automotive and industrial transient protection, engineered specifically for AEC-Q101 compliance, extreme temperature resilience (Tj ≤ 185 °C), and minimal PCB footprint in safety-critical power systems.
FAQ
What is the maximum clamping voltage for PTVS26VS1UTR-Q under a 10/1000 µs surge?
The clamping voltage VCL is 42.1 V at IPPM = 9.5 A for a 10/1000 µs waveform per IEC 61643-321. This value is measured at Tj = 25 °C and represents the peak voltage seen by downstream circuitry during worst-case transient events, ensuring compatibility with 36 V-rated ICs.
Is PTVS26VS1UTR-Q suitable for bidirectional transient protection?
No. PTVS26VS1UTR-Q is a unidirectional TVS diode with cathode-anode polarity. It clamps only reverse-biased transients (anode grounded, cathode to protected line). For bidirectional protection, a separate symmetric TVS or back-to-back configuration is required.
How does the 185 °C junction rating impact PCB layout decisions?
The 185 °C rating allows placement near heat sources without derating, but effective thermal management remains essential. Use ≥1 cm² copper pour on the cathode pad (per datasheet thermal condition [2]) to maintain Rth(j-sp) = 18 K/W and prevent localized overheating during repeated surges.
What does the 'Q' suffix signify in PTVS26VS1UTR-Q?
The 'Q' suffix denotes AEC-Q101 qualification. This part has passed stress tests including high-temperature operating life, temperature cycling, and ESD per Automotive Electronics Council standards, confirming suitability for automotive electronic systems.
PTVS26VS1UTR-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):
- 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 ~ 185°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
PTVS26VS1UTR-QX FAQ
1.How can I place an order for PTVS26VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS26VS1UTR-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 PTVS26VS1UTR-QX reliable?
The price and inventory of PTVS26VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS26VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS26VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS26VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS26VS1UTR-QX?
PTVS26VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS26VS1UTR-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 PTVS26VS1UTR-QX?
For technical support, including PTVS26VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS26VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS26VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS26VS1UTR-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 PTVS26VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS26VS1UTR-QX?
All PTVS26VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS26VS1UTR-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 PTVS26VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS26VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS26VS1UTR-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
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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