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Nexperia USA Inc. PTVS51VS1UTR,115
- Part No.:
- PTVS51VS1UTR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS51VS1UTR,115.pdf
- Description:
- TVS DIODE 51VWM 82.4VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
PTVS51VS1UTR,115 from Nexperia is a unidirectional 400 W Transient Voltage Suppressor (TVS) in SOD123W (CFP3) package, designed for high-temperature transient overvoltage protection in power rails. Confirmed parameters: VRWM = 51 V, VBR(min) = 56.7 V, VCL = 82.4 V at IPPM = 4.9 A (10/1000 µs), Tj ≤ 185 °C, and IRM ≤ 0.001 µA at VRWM. Used in industrial DC power supply input stages to clamp ESD and surge events.
For engineers reviewing the PTVS51VS1UTR,115 datasheet, PTVS51VS1UTR,115 pinout, PTVS51VS1UTR,115 application, or PTVS51VS1UTR,115 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, junction temperature derating above 25 °C, standoff voltage alignment with nominal rail voltage, and SOD123W thermal resistance to PCB copper area.
Technical Context
This unidirectional TVS operates as a reverse-biased avalanche diode, triggering when transient voltage exceeds VRWM = 51 V and clamping to VCL = 82.4 V at 4.9 A peak pulse current. Its breakdown voltage VBR ranges from 56.7 V (min) to 62.7 V (max) at 1 mA, with temperature coefficient SZ = 0.5 mV/K.
Rated for 400 W peak pulse power per IEC 61643-321 (10/1000 µs waveform), it maintains stable performance up to Tj = 185 °C and exhibits <0.001 µA reverse leakage at VRWM - critical for low-power standby circuits. Thermal resistance Rth(j-sp) = 18 K/W enables effective heat transfer via cathode solder point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 51 V - maximum continuous reverse operating voltage before clamping begins; matches 48 V nominal industrial power rails with 6% margin. |
| VBR (min) | 56.7 V - guaranteed avalanche initiation threshold at 1 mA; ensures reliable turn-on before downstream IC absolute maximum ratings are exceeded. |
| VCL / IPPM | 82.4 V at 4.9 A - clamped voltage under standardized 10/1000 µs surge; provides 31.4 V headroom above VRWM for safe transient suppression. |
| PPPM | 400 W - peak pulse power handling per IEC 61643-321; supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth). |
| Tj max | 185 °C - maximum junction temperature; enables operation in engine control units, motor drives, and enclosed industrial enclosures without derating. |
| IRM | ≤0.001 µA at VRWM - ultra-low reverse leakage; prevents measurable standby current increase in battery-backed or energy-harvesting systems. |
Pinout & Package
SOD123W (CFP3) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body height, flat lead profile optimized for automated placement and thermal conduction via cathode pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to protected circuit's positive rail; absorbs surge current into ground path when voltage exceeds VRWM. |
| 2 | Anode (A) | Connected to system ground; completes conduction path during transient clamping; requires low-inductance ground plane routing. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature stability | Junction rated to 185 °C - eliminates thermal derating in under-hood or sealed industrial environments where ambient exceeds 125 °C. |
| Low-profile SMD package | 1.0 mm max height - enables use in space-constrained modules such as DIN-rail PLC I/O cards and compact power adapters. |
| Ultra-low leakage | IRM ≤ 0.001 µA - preserves battery life in always-on monitoring nodes and avoids false triggers in high-impedance sensing circuits. |
| Controlled clamping ratio | VCL/VRWM = 1.615 - tight ratio ensures predictable overvoltage limiting without excessive voltage overshoot during fast transients. |
Applications
| Industrial Power Supply Input Protection | Motor Drive DC Bus Clamp |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +48 V rail and chassis ground to clamp surges within 1 ns response time. Use Value: Clamps 4 kV IEC 61000-4-5 surges to ≤82.4 V, protecting downstream DC-DC converters and microcontrollers rated to 85 V abs max. |
Use Scenario: DC link of 3-phase inverter driving HVAC compressors, subject to regenerative braking spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on 60–70 V DC bus to absorb stored inductive energy during MOSFET turn-off. Use Value: Handles 400 W peak pulses without degradation, maintaining VCL below IGBT gate driver isolation limits and preventing shoot-through failure. |
| High-Temperature Sensor Node Protection | Rail-to-Rail Surge Suppression in Enclosed Systems |
Use Scenario: Temperature sensor module mounted near furnace exhaust ducts, operating continuously at 150 °C ambient. IC Role / Device Role / Timing Role: TVS on 3.3 V or 5 V regulated supply rail to suppress ESD from maintenance personnel contact. Use Value: Stable IRM <0.001 µA and no parameter drift up to Tj = 185 °C ensure long-term reliability without calibration drift or false resets. |
Use Scenario: Fan controller inside sealed telecom rectifier cabinet with limited airflow and 100 °C internal ambient. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional PTVS51VS1UTR guards 48 V backplane against hot-swap insertion transients. Use Value: 18 K/W Rth(j-sp) allows direct thermal coupling to large copper pour, sustaining 400 W pulse capability even at Tamb = 100 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | DO-214AA package (4.5 mm × 3.9 mm × 2.3 mm); VRWM = 51 V; VCL = 83.5 V at 4.8 A; PPPM = 600 W; Tj max = 150 °C | Larger footprint and lower max junction temperature limit - unsuitable for >150 °C ambient or ultra-thin assemblies. | Select when higher pulse power margin is needed and board space permits larger package. |
| SMCJ51A | DO-214AB package (7.1 mm × 6.2 mm × 2.6 mm); VRWM = 51 V; VCL = 84.5 V at 4.7 A; PPPM = 1500 W; Tj max = 175 °C | 3× larger footprint and 10× higher thermal mass - better for repeated surges but incompatible with SOD123W layout. | Choose for high-repetition-rate surge environments (e.g., welding equipment) where PCB real estate is available. |
Compared with SMBJ51A and SMCJ51A, PTVS51VS1UTR,115 delivers identical 51 V standoff and comparable clamping in a 60% smaller footprint while enabling operation at 185 °C - making it the only option for thermally dense, space-constrained industrial designs requiring full-spec performance at extreme temperatures.
Availability
PTVS51VS1UTR,115 is available at Aetrix Electronics and suitable for industrial power supply protection, motor drive DC bus clamping, and high-temperature sensor node protection requiring stable component supply across extended product lifecycles.
Supply support for PTVS51VS1UTR,115 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 delivering high-performance, high-reliability standard logic, analog, and discrete components - with leadership in automotive-grade and industrial-grade protection devices.
The PTVSxS1UTR series targets high-temperature industrial and transportation applications where conventional TVS diodes fail due to thermal instability - engineered specifically for sustained operation up to 185 °C junction temperature in harsh environments.
FAQ
What is the clamping voltage of PTVS51VS1UTR,115 under a 10/1000 µs surge?
The clamping voltage VCL is 82.4 V at IPPM = 4.9 A for a 10/1000 µs waveform per IEC 61643-321. This value is measured at Tj = 25 °C and represents the maximum voltage seen by downstream circuitry during a standardized surge event - critical for verifying margin against protected IC absolute maximum ratings.
Does PTVS51VS1UTR,115 require derating at elevated ambient temperatures?
Yes - while the device is rated for Tj ≤ 185 °C, its peak pulse power must be derated above 25 °C ambient. Figure 2 in the datasheet shows PPPM drops to ~70% of 400 W at Tamb = 125 °C. Designers must calculate actual junction temperature using Rth(j-a) = 70 K/W (ceramic PCB) or Rth(j-sp) = 18 K/W and apply corresponding power reduction.
Can PTVS51VS1UTR,115 be used in bidirectional protection configurations?
No - PTVS51VS1UTR,115 is a unidirectional TVS diode with cathode/anode polarity. It conducts only during positive transients on the cathode relative to anode. For bidirectional protection (e.g., data lines), two devices in series opposition or a dedicated bidirectional TVS like PTVS51VS1UTR,115's counterpart in the PTVSxS1UTR-B series would be required.
What is the significance of the 'CZ' marking on the device body?
The 'CZ' marking is the manufacturer-specific code for PTVS51VS1UTR,115 per Table 4 of the datasheet. It identifies the 51 V variant within the PTVSxS1UTR series and confirms correct binning - essential for traceability and verification during incoming inspection or field failure analysis.
PTVS51VS1UTR,115 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):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- 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
PTVS51VS1UTR,115 FAQ
1.How can I place an order for PTVS51VS1UTR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS51VS1UTR,115 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 PTVS51VS1UTR,115 reliable?
The price and inventory of PTVS51VS1UTR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS51VS1UTR,115 is usually 5 days.
3.What payment methods are accepted for PTVS51VS1UTR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS51VS1UTR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS51VS1UTR,115?
PTVS51VS1UTR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS51VS1UTR,115 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 PTVS51VS1UTR,115?
For technical support, including PTVS51VS1UTR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS51VS1UTR,115 requirements.
6.How does Aetrix verify that PTVS51VS1UTR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS51VS1UTR,115 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 PTVS51VS1UTR,115 meets industry standards.
7.What is the process for return or replacement of PTVS51VS1UTR,115?
All PTVS51VS1UTR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS51VS1UTR,115, 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 PTVS51VS1UTR,115 part is unused and in its original packaging.
Return procedure for PTVS51VS1UTR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS51VS1UTR,115 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
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D5V0L1B2WS-7
Diodes Incorporated
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