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Vishay General Semiconductor - Diodes Division TPSMA43AHE3_A/H
- Part No.:
- TPSMA43AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,127
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Product details
Overview
TPSMA43AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching and lightning-induced transients on power and signal lines. It features a 43 V breakdown voltage (VBR), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), 185 °C maximum junction temperature, and SMA (DO-214AC) package - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMA43AHE3_A/H datasheet, TPSMA43AHE3_A/H pinout, TPSMA43AHE3_A/H application, or TPSMA43AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 36.8 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
The TPSMA43AHE3_A/H operates as a silicon avalanche diode with passivated anisotropic rectifier technology, delivering fast response time (<1 ns) and low incremental surge resistance to ensure precise clamping during transient events. Its thermal design supports continuous operation up to TJ = 185 °C, enabling use in under-hood automotive environments and high-temperature industrial enclosures.
It is rated for non-repetitive 10/1000 µs waveform surges only, with derating above 25 °C per Fig. 2, and requires mounting on minimum recommended pad layout (0.2" × 0.2") to sustain full 400 W rating. The cathode band denotes polarity, and terminals are matte tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - ensures reliable avalanche conduction onset above 36.8 V operating voltage |
| VC @ IPPM | 59.3 V at 6.7 A - defines worst-case clamped voltage seen by protected IC or MOSFET during surge |
| PPPM | 400 W (10/1000 µs) - determines energy-handling capability for common lightning/inductive-switching threats |
| VWM | 36.8 V - maximum continuous reverse voltage before significant leakage; sets upper limit for system DC rail |
| IR @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | 185 °C - enables deployment in AEC-Q101-compliant automotive modules without derating penalties |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.28 mm length, compatible with automated assembly |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, UL 94 V-0 flammability rating, and matte tin-plated leads solderable per J-STD-002. Cathode identified by color band; anode and cathode terminals are axially oriented along the body axis.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to lower-potential side of protected line | Enables unidirectional clamping - only conducts when cathode-to-anode voltage exceeds VBR |
| Cathode | Current exit point during avalanche clamping; connected to higher-potential side (e.g., VIN rail) | Defines polarity and clamping reference; color band marks this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics |
| 185 °C junction capability | Eliminates thermal derating in high-ambient environments such as power inverters and motor drives |
| 400 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surge immunity requirements |
| Low 1.0 µA leakage @ VWM | Prevents false triggering and minimizes quiescent current draw in always-on sensor interfaces |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning - reduces manufacturing complexity |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between signal line and ground or rail, responding within <1 ns to limit overvoltage. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs while maintaining signal fidelity due to low capacitance and leakage. | Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against lightning-induced surges in factory automation PLCs and motor controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V or 48 V DC input rails, coordinated with upstream fuses and downstream regulators. Use Value: Absorbs 400 W transient energy without degradation, enabling compliance with IEC 61000-4-5 and extending system uptime in harsh electrical environments. |
| Telecom Line Interface | Consumer Device USB/Power Port |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on twisted-pair data lines in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary-level transient suppressor mounted adjacent to RJ45 connector, working with common-mode chokes. Use Value: Clamps differential-mode transients to ≤59.3 V while sustaining 185 °C operation in sealed enclosures with limited airflow. | Use Scenario: Providing robust overvoltage protection on USB-C power delivery (PD) input ports in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line, activated only during fault conditions to avoid interference with normal 5–20 V PD negotiation. Use Value: Maintains 36.8 V stand-off margin above 20 V PD max, ensuring no false triggering during dynamic voltage transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same VBR (40.9–45.2 V), but SMB package (DO-214AA); 600 W PPPM; slightly higher VC (63.0 V) | Larger footprint; better suited for higher-energy surges where board space allows | Select SMBJ43A if surge energy exceeds 400 W or if existing layout uses SMB pads |
| 1.5SMC43A | Same VBR range, but SMC (DO-214AB) package; 1500 W PPPM; VC = 69.4 V; higher IFSM (100 A) | Designed for primary-level protection; requires larger thermal pads and more board area | Choose 1.5SMC43A for front-end mains-input protection where coordination with secondary TVS is needed |
Compared with SMBJ43A and 1.5SMC43A, the TPSMA43AHE3_A/H offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 59.3 V clamping - making it ideal for space-constrained, high-reliability signal-line protection where strict voltage limiting is critical.
Availability
TPSMA43AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power input stages, telecom line interfaces, and consumer USB/Power port designs requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA43AHE3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-temperature performance.
The TPSMA43AHE3_A/H belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for robust, high-temperature-stable clamping in automotive and industrial systems where failure is not an option.
FAQ
What is the exact breakdown voltage range for TPSMA43AHE3_A/H?
The TPSMA43AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 40.9 V (minimum) to 45.2 V (maximum) at 1.0 mA test current, with a typical value of 43.0 V. This range is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet Document Number 88405, ensuring consistent avalanche behavior across production lots. The TPSMA43AHE3_A/H maintains this specification under standard test conditions (TA = 25 °C).
Is TPSMA43AHE3_A/H AEC-Q101 qualified?
Yes, the TPSMA43AHE3_A/H is AEC-Q101 qualified. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, validated per stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock. This qualification is documented in Vishay's ordering information and applies directly to the TPSMA43AHE3_A/H part number, supporting its use in automotive powertrain and chassis modules.
What is the maximum clamping voltage of TPSMA43AHE3_A/H and at what current?
The TPSMA43AHE3_A/H has a maximum clamping voltage (VC) of 59.3 V at a peak pulse current (IPPM) of 6.7 A, tested with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured under standardized conditions per JEDEC and IEC standards. The TPSMA43AHE3_A/H achieves this clamping performance while maintaining low incremental resistance and fast response.
Does TPSMA43AHE3_A/H support lead-free reflow soldering?
Yes, the TPSMA43AHE3_A/H is rated MSL Level 1 with a maximum peak reflow temperature of 260 °C, fully compliant with lead-free soldering processes per J-STD-020. Its matte tin-plated leads meet J-STD-002 solderability requirements, and no preconditioning is required prior to reflow. This makes the TPSMA43AHE3_A/H suitable for high-volume SMT assembly lines without process modification.
What is the stand-off voltage (VWM) and reverse leakage of TPSMA43AHE3_A/H?
The TPSMA43AHE3_A/H has a stand-off voltage (VWM) of 36.8 V - the maximum continuous reverse voltage it can block without entering conduction. At this voltage and TA = 25 °C, its reverse leakage current (IR) is guaranteed ≤1.0 µA. This low leakage ensures minimal impact on sensitive analog or always-on circuits, and the TPSMA43AHE3_A/H maintains tight VWM/VBR margin for reliable operation.
TPSMA43AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 6.7A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA43AHE3_A/H FAQ
1.How can I place an order for TPSMA43AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3_A/H 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 TPSMA43AHE3_A/H reliable?
The price and inventory of TPSMA43AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA43AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3_A/H?
TPSMA43AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3_A/H 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 TPSMA43AHE3_A/H?
For technical support, including TPSMA43AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA43AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3_A/H 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 TPSMA43AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3_A/H?
All TPSMA43AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3_A/H, 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 TPSMA43AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA43AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA43AHE3_A/H Tags
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