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Vishay General Semiconductor - Diodes Division TPSMC43AHE3/9AT
- Part No.:
- TPSMC43AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC43AHE3/9AT.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,542
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Product details
Overview
TPSMC43AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping high-energy transients on power and signal lines. It features a 43 V nominal breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), 59.3 V maximum clamping voltage (VC) at 25.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive power systems.
For engineers reviewing the TPSMC43AHE3/9AT datasheet, TPSMC43AHE3/9AT pinout, TPSMC43AHE3/9AT application, or TPSMC43AHE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.38), and RoHS-compliant matte tin-plated terminals meeting J-STD-002 solderability standards.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its passivated anisotropic rectifier structure ensures stable leakage performance up to 150 °C and enables reliable operation under repetitive surge stress per IEC 61000-4-5 and ISO 7637-2 waveforms.
The device delivers 1500 W peak pulse power handling with a 10/1000 μs waveform while maintaining low incremental surge resistance and fast response time (< 1 ns). Its thermal design supports mounting on 8.0 mm × 8.0 mm copper pads and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping behavior |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 59.3 V at 25.3 A - clamped voltage during 10/1000 μs surge, limiting downstream component stress |
| PPPM | 1500 W - peak pulse power dissipation capability under standardized surge conditions |
| TJ max. | +185 °C - enables use in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against negative transients only; cathode marked by band |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm body length and 6.22 mm width |
Pinout & Package
TPSMC43AHE3/9AT uses the SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 flammability rating, and cathode indicated by a color band. Terminals are solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Anode | Reference/ground return path | Typically tied to system ground or lower-potential rail to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Junction passivation optimized | Reduces leakage drift at high temperature and improves long-term stability under bias |
| 1500 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Combination Wave surges |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes overvoltage exposure to protected ICs while maintaining margin above VWM |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and inductive switching transients in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients above 36.8 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤59.3 V during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors connected to CAN or LIN buses. IC Role / Device Role / Timing Role: Clamping device on sensor signal line to absorb ESD and coupled noise from nearby motor drivers. Use Value: Maintains signal integrity by suppressing transients before they reach precision ADC inputs, with <1 μA leakage at 36.8 V. |
| Telecom Power Supply Input | Consumer Device USB Port Protection |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom power supplies subject to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on output rail to prevent damage to downstream PoE controllers and PHYs. Use Value: Provides 1500 W surge immunity while holding leakage below 1 μA at rated 36.8 V, ensuring no standby power penalty. |
Use Scenario: Reverse-polarity and surge protection on VBUS line of USB-C ports in portable audio devices. IC Role / Device Role / Timing Role: Unidirectional clamping element between VBUS and ground to absorb hot-swap and ESD events. Use Value: Clamps 8 kV contact ESD to <59.3 V within nanoseconds, preserving USB enumeration and preventing port latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHE3/52T | Lower peak pulse power (600 W), SMB package (smaller footprint), same VBR range and AEC-Q101 qualification | Suitable for space-constrained designs with lower surge threat levels (e.g., infotainment USB ports) | Select when board area is limited and 600 W surge capacity suffices; not drop-in due to different thermal mass and pad layout |
| TPSMC43AHM3/9AT | Halogen-free variant with identical electrical specs, same SMC package, and enhanced material compliance | Required for RoHS + halogen-free mandates in EU automotive Tier 1 supply chains | Direct material substitution where halogen-free certification is contractually required; identical PCB layout and thermal performance |
Compared with TPSMC43AHE3/9AT, SMBJ43AHE3/52T offers smaller size but reduced surge robustness, while TPSMC43AHM3/9AT provides identical protection performance with halogen-free construction - enabling compliance-driven replacement without redesign.
Availability
TPSMC43AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom power supply input requiring stable component supply across production lifecycles.
Supply support for TPSMC43AHE3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The TPSMC43AHE3/9AT belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive under-hood and industrial control systems.
FAQ
What is the clamping voltage of the TPSMC43AHE3/9AT at its rated peak pulse current?
The TPSMC43AHE3/9AT has a maximum clamping voltage (VC) of 59.3 V at 25.3 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMC43AHE3/9AT maintains this clamping performance across its full operating temperature range, supporting reliable protection in demanding applications.
Is the TPSMC43AHE3/9AT qualified for automotive applications?
Yes, the TPSMC43AHE3/9AT is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance and automotive-grade reliability testing. It supports junction temperatures up to +185 °C and meets MSL Level 1 requirements, making it suitable for engine control units, body electronics, and ADAS power domains. The TPSMC43AHE3/9AT is explicitly listed in Vishay's AEC-Q101 certified product documentation.
What does the "9AT" suffix mean in TPSMC43AHE3/9AT?
The "9AT" suffix in TPSMC43AHE3/9AT denotes the tape-and-reel packaging configuration: 7-inch diameter reel with 850 units per reel, using plastic carrier tape per EIA-481 standards. This differs from alternate codes like "/9AI", which indicates a 13-inch reel with 3500 units. The TPSMC43AHE3/9AT is fully compatible with standard SMT pick-and-place equipment calibrated for DO-214AB components.
How does the TPSMC43AHE3/9AT compare to bidirectional TVS diodes?
The TPSMC43AHE3/9AT is unidirectional and protects against negative transients only, unlike bidirectional variants that suppress both polarities. Its VWM of 36.8 V allows higher DC operating margins than equivalent bidirectional parts with the same VBR. For circuits with defined polarity (e.g., 12 V automotive rails), the TPSMC43AHE3/9AT provides superior leakage control and clamping efficiency. Bidirectional alternatives require careful analysis of system common-mode voltage swing.
What is the thermal derating behavior of the TPSMC43AHE3/9AT above 25 °C ambient?
The TPSMC43AHE3/9AT follows linear derating of peak pulse power above 25 °C ambient, per Figure 2 in Vishay document 88407. At 125 °C ambient, its 1500 W rating reduces to approximately 750 W. Derating is based on junction temperature limits and assumes mounting on 8.0 mm × 8.0 mm copper pads. The TPSMC43AHE3/9AT retains full functionality up to TJ = +185 °C, with no permanent parameter shift after thermal cycling.
TPSMC43AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
TPSMC43AHE3/9AT FAQ
1.How can I place an order for TPSMC43AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC43AHE3/9AT 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 TPSMC43AHE3/9AT reliable?
The price and inventory of TPSMC43AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC43AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC43AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC43AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC43AHE3/9AT?
TPSMC43AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC43AHE3/9AT 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 TPSMC43AHE3/9AT?
For technical support, including TPSMC43AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC43AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC43AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC43AHE3/9AT 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 TPSMC43AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC43AHE3/9AT?
All TPSMC43AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC43AHE3/9AT, 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 TPSMC43AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC43AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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