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Nexperia USA Inc. PTVS20VS1UTR-QX
- Part No.:
- PTVS20VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS20VS1UTR-QX.pdf
- Description:
- PTVS20VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
PTVS20VS1UTR-Q from Nexperia is a unidirectional 400 W transient voltage suppressor (TVS) diode in SOD123W (CFP3) package, designed for high-temperature overvoltage protection in automotive power rails. It features VRWM = 20 V, VBR(min) = 22.2 V, VCL = 32.4 V at IPPM = 12.3 A (10/1000 μs), and operates up to Tj = 185 °C.
For engineers reviewing the PTVS20VS1UTR-Q datasheet, PTVS20VS1UTR-Q pinout, PTVS20VS1UTR-Q application, or PTVS20VS1UTR-Q equivalent, this device is selected for robust clamping in 12 V/24 V automotive subsystems, battery management inputs, and industrial DC power interfaces where AEC-Q101 qualification and thermal stability are mandatory.
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode to clamp transient surges above its reverse standoff voltage (VRWM = 20 V). Its VBR range (22.2–24.5 V) ensures reliable turn-on before system damage, with clamping voltage VCL = 32.4 V limiting downstream stress under 12.3 A peak pulse current.
Thermal design is enabled by low Rth(j-sp) = 18 K/W to solder point and rated junction temperature up to 185 °C, supporting operation in engine bay or under-hood environments. ESD ratings meet IEC 61000-4-2 (±30 kV contact/air) and MIL-STD-883 HBM (±8 kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 20 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min) | 22.2 V - Minimum breakdown voltage at 1 mA, ensuring predictable turn-on margin |
| VCL @ IPPM | 32.4 V at 12.3 A - Clamped voltage during 10/1000 μs surge, defining maximum stress on protected IC |
| PPPM | 400 W - Peak pulse power handling per IEC 61643-321, enabling robust surge immunity |
| IRM | 0.001 μA - Reverse leakage at VRWM, minimizing standby power loss in always-on systems |
| Tj max | 185 °C - Maximum junction temperature, supporting under-hood automotive deployment |
| AEC-Q101 | Qualified - Meets stress test requirements for discrete semiconductors in automotive applications |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead, low-profile (1 mm height), cathode marked with bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to protected line (e.g., 12 V rail); clamping occurs when voltage exceeds VRWM relative to anode |
| 2 | Anode (A) | Connected to ground reference; completes avalanche conduction path during transients |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Tj ≤ 185 °C enables placement near heat sources without derating-critical for engine control units |
| AEC-Q101 qualification | Validated for automotive use per stress test standard, reducing qualification burden for Tier 1 suppliers |
| Low-profile SOD123W package | 1 mm height allows routing under connectors or in space-constrained PCB layouts |
| 400 W peak pulse rating | Handles ISO 7637-2 Pulse 1/2a/5a surges without degradation in 12 V systems |
| Ultra-low IRM | 0.001 μA leakage preserves battery life in always-connected vehicle modules |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O against load dump and inductive switching spikes in door module PCBs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients within 1 ns response time. Use Value: Prevents latch-up or permanent damage to 5 V LDO regulators and CAN/LIN PHYs during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V sensor supply line, upstream of filtering and regulation stages. Use Value: Limits transient voltage to ≤32.4 V, keeping downstream op-amps and ADC references within safe operating area during 4 kV EFT bursts. |
| Automotive Infotainment Power Rail | High-Temperature Battery Management System (BMS) |
Use Scenario: Shielding USB-C PD controller and display power supplies from alternator ripple and ignition noise in center console designs. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and common-mode choke, absorbing fast-rising transients. Use Value: Maintains <1 μA leakage to avoid disrupting low-power sleep states while surviving 185 °C ambient near HVAC ducts. |
Use Scenario: Protecting cell monitor ICs and isolation amplifiers in EV battery packs subjected to thermal cycling and vibration. IC Role / Device Role / Timing Role: Bidirectional-capable layout (anode grounded, cathode to sense line) for reverse polarity and surge suppression. Use Value: Withstands 185 °C junction temperature and delivers stable clamping across -40 °C to +125 °C ambient, matching BMS thermal profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-Q | Lower PPPM (400 W same), but VCL = 32.4 V identical; VRWM = 20 V, but Tj max = 150 °C (vs. 185 °C) | Not qualified to AEC-Q101; limited to under-dash or non-engine-bay locations | Select when cost sensitivity outweighs under-hood thermal requirement |
| TPSMD20A | Higher VCL = 34.4 V at same IPPM; VRWM = 20 V; Tj max = 175 °C; AEC-Q101 qualified | Marginally higher clamping increases risk to 3.3 V logic downstream; requires layout review | Choose only if existing footprint compatibility with SMA/DO-214AB is mandatory |
Compared with SMAJ20A-Q and TPSMD20A, PTVS20VS1UTR-Q uniquely combines AEC-Q101 qualification, 185 °C junction rating, and 1 mm profile-enabling compact, high-reliability placement in thermally aggressive automotive zones where alternatives require derating or additional thermal mitigation.
Availability
PTVS20VS1UTR-Q is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power inputs, and high-temperature battery management systems requiring stable component supply across extended product lifecycles.
Supply support for PTVS20VS1UTR-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 essential efficiency-enhancing components, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
PTVS20VS1UTR-Q belongs to the PTVSxS1UTR-Q series-engineered specifically for high-temperature transient suppression in automotive power networks, emphasizing AEC-Q101 reliability, minimal leakage, and compact SMD integration.
FAQ
What is the clamping voltage of PTVS20VS1UTR-Q under standard surge conditions?
The clamping voltage VCL is 32.4 V at a peak pulse current IPPM of 12.3 A, measured using the 10/1000 μs waveform per IEC 61643-321. This value is guaranteed across the full operating temperature range and defines the maximum voltage imposed on protected circuitry during transient events.
Is PTVS20VS1UTR-Q suitable for bidirectional transient protection?
No-it is a unidirectional TVS diode, optimized for clamping positive transients on grounded-anode configurations. For bidirectional protection, two devices must be used in series opposition or a dedicated bidirectional part like PTVS20VS1UTR-Q's counterpart in the bidirectional PTVSxS1UTR-Q-B series should be selected.
How does the 185 °C junction rating impact PCB layout decisions?
The 185 °C Tj max allows direct placement near heat-generating components (e.g., DC-DC inductors or motor drivers) without thermal derating. Layout should still ensure ≥18 K/W junction-to-solder-point thermal resistance via adequate copper pour on the cathode pad, per Nexperia's CFP3 footprint guidelines.
Does PTVS20VS1UTR-Q require external series impedance for optimal performance?
No external series resistor is required for basic clamping function, but a current-limiting resistor may be added upstream to reduce IPPM and extend device lifetime during repetitive surges. The diode's low dynamic impedance ensures effective clamping even without added impedance in single-event scenarios like ESD or load dump.
PTVS20VS1UTR-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):
- 20V (Max)
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 12.3A
- 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
PTVS20VS1UTR-QX FAQ
1.How can I place an order for PTVS20VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS20VS1UTR-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 PTVS20VS1UTR-QX reliable?
The price and inventory of PTVS20VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS20VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS20VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS20VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS20VS1UTR-QX?
PTVS20VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS20VS1UTR-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 PTVS20VS1UTR-QX?
For technical support, including PTVS20VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS20VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS20VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS20VS1UTR-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 PTVS20VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS20VS1UTR-QX?
All PTVS20VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS20VS1UTR-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 PTVS20VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS20VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS20VS1UTR-QX Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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