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Nexperia USA Inc. PTVS33VS1UTR-QX
- Part No.:
- PTVS33VS1UTR-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS33VS1UTR-QX.pdf
- Description:
- PTVS33VS1UTR-Q/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:9,816
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Product details
Overview
PTVS33VS1UTR-Q from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature transient overvoltage protection in automotive power rails. It features VRWM = 33 V, VBR(min) = 36.7 V, VCL = 53.3 V at IPPM = 7.5 A (10/1000 μs), and operates up to Tj = 185 °C.
For engineers reviewing the PTVS33VS1UTR-Q datasheet, PTVS33VS1UTR-Q pinout, PTVS33VS1UTR-Q application, or PTVS33VS1UTR-Q equivalent, key selection criteria include clamping voltage under 54 V at 7.5 A, reverse leakage ≤0.1 µA at VRWM, AEC-Q101 qualification, thermal resistance Rth(j-sp) = 18 K/W, and SOD123W footprint compatibility with high-density PCB layouts.
Technical Context
This TVS diode uses a planar silicon junction structure optimized for fast response (<1 ns) to ESD and surge transients per IEC 61643-321 (10/1000 μs). Its unidirectional configuration enables integration in DC power lines where polarity is fixed and reverse conduction must be blocked until breakdown.
The device's temperature coefficient of breakdown voltage (SZ = 0.5 mV/K) ensures stable clamping across –55 °C to +185 °C ambient, while its low Rth(j-sp) = 18 K/W supports reliable power dissipation when mounted on cathode-tab solder points in engine control units and battery management systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 33 V nominal systems. |
| VBR (min) | 36.7 V - Minimum breakdown voltage at 1 mA; guarantees activation above normal operating voltage with margin against false triggering. |
| VCL @ IPPM | 53.3 V at 7.5 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to sub-54 V during 400 W transient events. |
| IRM | 0.001 µA at VRWM - Ultra-low reverse leakage; minimizes quiescent power loss in always-on automotive modules. |
| Tj max | 185 °C - Junction temperature limit enabling placement near heat sources (e.g., power converters, motor drivers) without derating. |
| Rth(j-sp) | 18 K/W - Thermal resistance from junction to cathode solder point; enables efficient heat transfer into PCB copper when cathode pad is thermally enhanced. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air); provides robust system-level ESD immunity without external shielding or additional protection stages. |
Pinout & Package
PTVS33VS1UTR-Q is housed in a SOD123W (CFP3) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, with flat leads and 0.9–1.1 mm body height. The cathode is marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., 33 V supply rail); absorbs positive transients when voltage exceeds VBR relative to anode. |
| 2 (A) | Anode | Connected to ground or lower-potential reference; completes current path during clamping; must be low-inductance ground return. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test standard; eliminates need for requalification in Tier-1 ECU designs. |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (2 Ω source, 1 kV) on 33 V lines without failure or parameter shift. |
| SOD123W low-profile package | 1.0 mm max height enables placement under connectors or in space-constrained modules like ADAS camera ECUs. |
| 185 °C junction rating | Supports direct mounting on hot PCB zones (e.g., near DC-DC inverter stages) without thermal derating or heatsinks. |
| 0.001 µA IRM | Reduces standby current drain in always-on vehicle networks (e.g., CAN FD wake-up circuits), extending battery life. |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protecting 33 V battery-sensed supply lines in modern 48 V mild-hybrid vehicles from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches PMICs and microcontrollers. Use Value: Limits voltage to ≤53.3 V during 7.5 A surges, preventing latch-up or gate oxide damage in 33 V-rated power management ICs. |
Use Scenario: Safeguarding analog sensor inputs and CAN transceiver power pins in under-hood ECUs exposed to high ambient temperatures. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed directly at connector entry point. Use Value: Maintains <0.1 µA leakage at 150 °C junction temp, avoiding signal offset drift in precision ADC front-ends. |
| Industrial Motor Drive DC Bus Clamp | High-Temperature Battery Management System (BMS) |
Use Scenario: Suppressing switching-induced transients on 33 V auxiliary DC bus in servo drives operating at 125 °C ambient. IC Role / Device Role / Timing Role: Primary surge suppression element parallel to bus capacitor, rated for repeated 400 W events. Use Value: Withstands 185 °C junction temperature and delivers consistent VCL performance across full thermal range-no derating required. |
Use Scenario: Protecting cell monitor ICs and isolation amplifiers in lithium-ion BMS modules installed near battery cells. IC Role / Device Role / Timing Role: Low-leakage, high-temp TVS on isolated 33 V bias rails powering sensing circuitry. Use Value: 0.001 µA IRM prevents cumulative error in coulomb counting over 10+ year service life at elevated temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-Q | Lower PPPM (400 W vs. SMAJ33A-Q's 400 W), but higher VCL = 53.3 V vs. 53.3 V; identical VRWM and package; same AEC-Q101 grade. | No functional difference in 33 V rail protection; SMAJ33A-Q has slightly higher IRM (1 µA vs. 0.001 µA) and lower Tj max (150 °C). | Select PTVS33VS1UTR-Q when operation >150 °C ambient or ultra-low leakage is critical (e.g., BMS). |
| 1.5SMC33AQ | Same VRWM and VCL, but larger SMC package (7.1 mm × 6.2 mm × 2.6 mm); PPPM = 1500 W; not AEC-Q101 qualified. | Requires 3× PCB area; suitable only for non-automotive industrial boards where size and qualification are secondary to surge margin. | Choose PTVS33VS1UTR-Q for space-constrained, automotive-grade, high-temp designs; avoid 1.5SMC33AQ in AEC-compliant systems. |
Compared with SMAJ33A-Q, PTVS33VS1UTR-Q offers 35 °C higher junction rating and 1000× lower leakage-critical for long-life automotive electronics. Against 1.5SMC33AQ, it trades surge headroom for AEC-Q101 compliance and 70% smaller footprint, enabling next-gen compact ECU layouts.
Availability
PTVS33VS1UTR-Q is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit (ECU) input safeguarding, and high-temperature battery management systems requiring stable component supply across extended product lifecycles.
Supply support for PTVS33VS1UTR-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-qualified components and advanced packaging.
The PTVSxS1UTR-Q series was developed specifically for AEC-Q101-compliant transient suppression in high-temperature automotive subsystems-including 48 V architectures, ADAS domain controllers, and electrified powertrain modules.
FAQ
What is the maximum clamping voltage of PTVS33VS1UTR-Q under standard surge conditions?
The clamping voltage VCL is 53.3 V at IPPM = 7.5 A for a 10/1000 μs waveform per IEC 61643-321. This value is measured at Tj = 25 °C and remains stable up to Tj = 150 °C, with typical variation <±3% across the full 185 °C junction range.
Does PTVS33VS1UTR-Q support bidirectional transient suppression?
No-it is a unidirectional TVS diode, configured with cathode (pin 1) and anode (pin 2) terminals. It conducts only during positive transients on the cathode relative to anode. For bidirectional protection, two devices in series-opposing configuration or a dedicated bidirectional part (e.g., PTVS33VS1UTR-Q's counterpart in the bidirectional PTVS33VS1UTR-QB series) is required.
How does the SOD123W package affect thermal performance in high-power surge events?
The SOD123W package achieves Rth(j-sp) = 18 K/W to the cathode solder point, enabling effective heat extraction into PCB copper. When the cathode pad is expanded to ≥1 cm² tin-plated copper on FR4, thermal resistance drops to 70 K/W (junction-to-ambient), sustaining repeated 400 W pulses without exceeding 185 °C junction limit.
Is PTVS33VS1UTR-Q compatible with lead-free reflow soldering processes?
Yes-it is qualified for standard lead-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260 °C for ≤60 seconds. The recommended stencil thickness is 0.1 mm, with solder paste volume calibrated for the 2.6 mm × 1.7 mm SOD123W footprint shown in Figure 6 of the official Nexperia data sheet.
PTVS33VS1UTR-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):
- 33V (Max)
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 7.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 185°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
PTVS33VS1UTR-QX FAQ
1.How can I place an order for PTVS33VS1UTR-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS33VS1UTR-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 PTVS33VS1UTR-QX reliable?
The price and inventory of PTVS33VS1UTR-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS33VS1UTR-QX is usually 5 days.
3.What payment methods are accepted for PTVS33VS1UTR-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS33VS1UTR-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS33VS1UTR-QX?
PTVS33VS1UTR-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS33VS1UTR-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 PTVS33VS1UTR-QX?
For technical support, including PTVS33VS1UTR-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS33VS1UTR-QX requirements.
6.How does Aetrix verify that PTVS33VS1UTR-QX is sourced from the original manufacturer or authorized distributors?
All PTVS33VS1UTR-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 PTVS33VS1UTR-QX meets industry standards.
7.What is the process for return or replacement of PTVS33VS1UTR-QX?
All PTVS33VS1UTR-QX units undergo pre-shipment inspection (PSI). If there is an issue with PTVS33VS1UTR-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 PTVS33VS1UTR-QX part is unused and in its original packaging.
Return procedure for PTVS33VS1UTR-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS33VS1UTR-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
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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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D5V0L1B2WS-7
Diodes Incorporated
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