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Nexperia USA Inc. PTVS43VS1UTR,115
- Part No.:
- PTVS43VS1UTR,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SOD-123W
- Datasheet:
-
PTVS43VS1UTR,115.pdf
- Description:
- TVS DIODE 43VWM 69.4VC SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
PTVS43VS1UTR,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. It features VRWM = 43 V, VBR(min) = 47.8 V at 1 mA, VCL = 69.4 V at IPPM = 5.8 A (10/1000 µs), and operates up to Tj = 185 °C - enabling robust surge suppression in industrial power supplies and automotive under-hood modules.
For engineers reviewing the PTVS43VS1UTR,115 datasheet, PTVS43VS1UTR,115 pinout, PTVS43VS1UTR,115 application, or PTVS43VS1UTR,115 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, thermal resistance Rth(j-sp) = 18 K/W for solder-point cooling, peak pulse current derating above 25 °C, and cathode-anode polarity alignment in series-connected protection paths.
Technical Context
This unidirectional TVS diode uses an avalanche breakdown mechanism to clamp transients above its reverse standoff voltage (VRWM = 43 V). Its VBR range (47.8–52.8 V) ensures reliable turn-on before downstream component damage, while low IRM ≤ 0.001 µA minimizes standby leakage in battery-backed systems.
Rated for IEC 61643-321 10/1000 µs waveform, it delivers 400 W peak pulse power with junction temperature derating down to ~60% at 150 °C (per Fig. 2). The SOD123W package's 1 mm height and 18 K/W Rth(j-sp) support thermal management in space-constrained, high-ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43 V - maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin. |
| VBR (min) | 47.8 V at 1 mA - guaranteed avalanche initiation threshold; defines lower bound of clamping onset. |
| VCL | 69.4 V at IPPM = 5.8 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge. |
| PPPM | 400 W - maximum transient energy absorption capability per IEC 61643-321; enables single-device protection against 1 kV/500 A surges. |
| Tj max | 185 °C - extended junction temperature rating allows operation in engine control units, motor drives, and industrial inverters without derating. |
| Rth(j-sp) | 18 K/W - thermal resistance from junction to cathode solder point; enables direct PCB copper pour cooling for sustained surge handling. |
| IRM | ≤ 0.001 µA at VRWM - ultra-low reverse leakage preserves battery life in always-on systems and avoids false triggering. |
Pinout & Package
The PTVS43VS1UTR,115 is housed in a SOD123W (CFP3) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, with a low-profile 1 mm height optimized for automated assembly and thermal conduction via cathode pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line (e.g., +12 V rail); marking bar identifies this terminal; carries full surge current during clamping. |
| 2 (A) | Anode | Connected to ground or low-impedance return path; completes avalanche conduction loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Junction rated to 185 °C - eliminates need for external heatsinking in under-hood or enclosed industrial enclosures. |
| Low-profile SMD package | SOD123W footprint (2.6 × 1.7 mm) with 1 mm height - fits dense PCB layouts and enables reflow-compatible assembly without tombstoning. |
| Ultra-low leakage | IRM ≤ 0.001 µA at VRWM - prevents parasitic discharge in backup power circuits and meets stringent ISO 16750-2 quiescent current requirements. |
| Controlled clamping ratio | VCL/VBR ≈ 1.45 - tight voltage margin between breakdown and clamping ensures effective protection without overdesigning downstream TVS staging. |
| ESD robustness | 30 kV contact discharge (IEC 61000-4-2), >8 kV HBM - provides secondary ESD immunity without requiring additional discrete ESD suppressors. |
Applications
| Industrial Power Supply Protection | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of DC-DC converter input to clamp surges before they reach primary-side MOSFETs and controller ICs. Use Value: With VCL = 69.4 V and 400 W rating, it safely absorbs 12 V load dump pulses (ISO 7637-2 Pulse 5a) without degradation, preserving converter reliability over 15+ year field life. |
Use Scenario: 12 V battery-supplied microcontroller power domain in engine bay modules subject to cranking dips and alternator ripple. IC Role / Device Role / Timing Role: Cathode tied to MCU VDD rail, anode to chassis ground - clamps positive-going transients within 1 ns response time to prevent latch-up or reset corruption. Use Value: Tj = 185 °C rating ensures stable clamping performance at ambient temperatures up to 125 °C, eliminating thermal runaway risk during prolonged high-load operation. |
| Motor Drive Gate Driver Protection | Telecom DC Power Feeding Interface |
|
Use Scenario: Isolated gate driver supply rail in 3-phase inverter modules where IGBT switching induces fast dv/dt coupling into auxiliary power rails. IC Role / Device Role / Timing Role: TVS placed across isolated 15 V gate supply output to suppress coupled transients before they disrupt level-shifting logic or bootstrap capacitor charging. Use Value: Low Rth(j-sp) = 18 K/W allows direct thermal coupling to copper pour, sustaining repeated 10/1000 µs surges without junction overheating during motor stall conditions. |
Use Scenario: -48 V DC feeding interface in remote radio head (RRH) base stations, exposed to lightning-induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS installed at PoE-like DC input connector to limit common-mode surge energy entering power conversion stage. Use Value: VRWM = 43 V provides 5 V margin above nominal -48 V rail (absolute value), while VCL = 69.4 V stays below typical -75 V absolute maximum ratings of telecom rectifier ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Same VRWM (43 V), but lower PPPM = 400 W only at 25 °C; derates to ~220 W at 125 °C; Rth(j-a) = 70 K/W vs. 18 K/W. | Requires larger PCB copper area for thermal management; unsuitable for compact high-ambient designs. | Select when cost is prioritized over thermal performance and board space is unconstrained. |
| SMCJ43A | Higher PPPM = 1500 W, but SMC package (7.1 × 6.2 mm) - 4× larger footprint and 2.2 mm height; Tj max = 175 °C. | Over-specified for 400 W needs; incompatible with SOD123W layout; adds mechanical stress in vibration-prone environments. | Choose only if legacy SMC footprint must be retained or multi-kW surge immunity is required beyond spec. |
Compared with SMAJ43A and SMCJ43A, PTVS43VS1UTR,115 uniquely balances 400 W surge capacity, 185 °C junction rating, and ultra-compact SOD123W packaging - making it optimal for thermally dense, high-reliability applications where size, temperature, and consistent clamping performance are jointly critical.
Availability
PTVS43VS1UTR,115 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU design, motor drive gate driver circuits, and telecom DC feeding interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PTVS43VS1UTR,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, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and thermal resilience.
The PTVSxS1UTR series targets high-temperature transient suppression in harsh-environment electronics - specifically engineered to replace legacy TVS diodes in automotive, industrial, and telecom applications demanding extended junction temperature operation without sacrificing surge robustness.
FAQ
What is the maximum clamping voltage of PTVS43VS1UTR,115 under standard test conditions?
The clamping voltage VCL is 69.4 V at a peak pulse current IPPM of 5.8 A using the IEC 61643-321 10/1000 µs waveform. This value is measured at Tj = 25 °C and represents the maximum voltage imposed on the protected circuit during a defined surge event - critical for verifying margin against downstream component absolute maximum ratings.
How does the device perform at elevated junction temperatures?
PTVS43VS1UTR,115 maintains full 400 W peak pulse power capability up to Tj = 125 °C, then derates linearly to ~240 W at 150 °C and ~120 W at 185 °C (per Fig. 2). Its VBR exhibits a positive temperature coefficient (+0.5 mV/K), ensuring predictable, stable clamping behavior across the full operating range without thermal runaway.
Can PTVS43VS1UTR,115 be used in bidirectional protection configurations?
No - it is strictly unidirectional. The device conducts only when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional protection (e.g., AC lines or data lines with ± surges), two PTVS43VS1UTR,115 units must be connected in series opposition, or a dedicated bidirectional TVS such as PTVS43VS1UTR,115's counterpart in the PTVS43VS1UTR-B series should be selected.
What is the significance of the "CW" marking code on the device body?
The "CW" marking indicates the PTVS43VS1UTR variant per Nexperia's standardized coding (Table 4). It uniquely identifies the 43 V reverse standoff voltage version within the PTVSxS1UTR series and confirms compliance with the SOD123W package outline and electrical specifications - essential for visual inspection and counterfeit detection during incoming quality checks.
PTVS43VS1UTR,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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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
PTVS43VS1UTR,115 FAQ
1.How can I place an order for PTVS43VS1UTR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTVS43VS1UTR,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 PTVS43VS1UTR,115 reliable?
The price and inventory of PTVS43VS1UTR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTVS43VS1UTR,115 is usually 5 days.
3.What payment methods are accepted for PTVS43VS1UTR,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTVS43VS1UTR,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTVS43VS1UTR,115?
PTVS43VS1UTR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTVS43VS1UTR,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 PTVS43VS1UTR,115?
For technical support, including PTVS43VS1UTR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTVS43VS1UTR,115 requirements.
6.How does Aetrix verify that PTVS43VS1UTR,115 is sourced from the original manufacturer or authorized distributors?
All PTVS43VS1UTR,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 PTVS43VS1UTR,115 meets industry standards.
7.What is the process for return or replacement of PTVS43VS1UTR,115?
All PTVS43VS1UTR,115 units undergo pre-shipment inspection (PSI). If there is an issue with PTVS43VS1UTR,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 PTVS43VS1UTR,115 part is unused and in its original packaging.
Return procedure for PTVS43VS1UTR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PTVS43VS1UTR,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
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ESD5Z5.0T1G
onsemi
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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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