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Vishay General Semiconductor - Diodes Division TPC43AHM3/86A
- Part No.:
- TPC43AHM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC43AHM3/86A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,522
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Product details
Overview
TPC43AHM3/86A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial electronics protection. It features a 43.0 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), clamping voltage of 59.3 V at 25.3 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC43AHM3/86A datasheet, TPC43AHM3/86A pinout, TPC43AHM3/86A application, or TPC43AHM3/86A equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, unidirectional polarity, and suitability for inductive load switching transients on sensor signal lines and MOSFET gate drivers.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time under 10/1000 µs surge conditions. Its junction temperature capability up to +185 °C enables operation in under-hood automotive environments and high-power industrial control systems.
The device is rated for 1500 W peak pulse power with a 10/1000 µs waveform and exhibits a typical temperature coefficient of VBR of 0.092 %/°C, enabling predictable voltage clamping across wide thermal ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 43.0 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 36.8 V - maximum continuous reverse operating voltage compatible with 3.3 V–48 V supply rails |
| VC @ IPPM | 59.3 V - clamping voltage limits transient energy delivered to protected circuit during 25.3 A surge |
| PPPM | 1500 W - high-energy absorption capacity for automotive load-dump and inductive-switching events |
| TJ max. | +185 °C - supports placement near heat sources in engine control units and motor drives |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm height), AEC-Q101 qualified, RoHS-compliant |
| Leakage @ VWM | 1.0 μA - minimal standby power loss and negligible impact on high-impedance sensor bias networks |
Pinout & Package
TPC43AHM3/86A is housed in a 3-terminal SMPC (TO-277A) package with cathode band marking on Terminal 1 and Terminal 2, and anode on Terminal 3. The package conforms to JEDEC TO-277A mechanical dimensions and supports automated SMT placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to protected line; forms clamping path to ground when transient exceeds VBR |
| 2 (Cathode) | Parallel cathode connection | Redundant cathode terminal improves current sharing and reduces effective surge impedance |
| 3 (Anode) | Ground reference terminal | Low-inductance connection point to system ground plane; critical for fast transient response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85 % RH - eliminates bake requirements prior to reflow |
| 1.1 mm profile | Enables compact PCB layout in space-constrained modules such as ADAS camera ECUs and battery management sensors |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
| Halogen-free & RoHS | Complies with automotive material restrictions and end-of-life recycling requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of microcontroller I/O pins and CAN transceiver inputs against load-dump and alternator ripple transients in 12 V/24 V vehicle electrical systems. IC Role / Device Role: Unidirectional TVS placed between signal line and chassis ground to clamp positive-going surges only. Use Value: Withstands 1500 W pulses while maintaining clamping below 59.3 V - preserving integrity of 5 V logic interfaces and 3.3 V CAN PHYs. | Use Scenario: Safeguarding analog feedback signals (e.g., current sense, temperature) from inductive kickback in variable-frequency drives. IC Role / Device Role: Transient suppression on isolated analog input traces routed near high-current IGBT gate drivers. Use Value: 1.1 mm height allows placement directly at connector entry points without interfering with heatsink clearance or board stacking. |
| Automotive Camera Module | Telecom Power Supply Monitoring |
Use Scenario: Shielding MIPI CSI-2 data lines and power rails in surround-view camera modules exposed to ESD and cable discharge events. IC Role / Device Role: Low-capacitance unidirectional TVS on 1.8 V/2.8 V supply and high-speed differential pairs. Use Value: AEC-Q101 qualification and TJ = +185 °C rating ensure stable performance in sealed, non-ventilated camera housings. | Use Scenario: Overvoltage protection on DC-DC converter output monitoring lines in 48 V telecom rectifiers subject to lightning-induced surges. IC Role / Device Role: Standoff-rated TVS on voltage divider networks feeding ADC inputs of power management ICs. Use Value: 36.8 V VWM matches common 48 V nominal telecom rails with sufficient margin to avoid false triggering during normal regulation ripple. |
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-E3/57T (Vishay) | Same VBR (43 V), but SMA package (higher profile: 2.29 mm), lower PPPM (400 W), no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to consumer/industrial board-level protection | Select when cost or legacy footprint compatibility outweighs automotive qualification and energy rating needs |
| TPC43AHE3/86A (Vishay) | Identical electrical specs and AEC-Q101 rating; differs only in packaging - HM3/86A denotes halogen-free, RoHS-compliant tape-and-reel delivery with MSL Level 1 | No functional difference; identical application scope and reliability performance | Preferred for new designs requiring full compliance documentation and traceable sourcing |
Compared with SMAJ43A-E3/57T, TPC43AHM3/86A delivers 3.75× higher surge energy handling and automotive qualification; versus TPC43AHE3/86A, it shares identical protection performance but reflects updated material compliance and packaging standards for production traceability.
Availability
TPC43AHM3/86A is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, automotive camera modules, and telecom power supply monitoring requiring stable component supply and long-term lifecycle support.
Supply support for TPC43AHM3/86A 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 TPC series is part of Vishay's PAR® family of high-power TVS diodes engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 compliance and +185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPC43AHM3/86A at its rated peak pulse current?
The TPC43AHM3/86A has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current (IPPM) of 25.3 A under a 10/1000 µs waveform. This value is measured per standard test conditions defined in ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for protected circuits. The TPC43AHM3/86A maintains this clamping performance across its full operating temperature range due to its specified temperature coefficient of 0.092 %/°C.
Is the TPC43AHM3/86A suitable for automotive under-hood applications?
Yes, the TPC43AHM3/86A is explicitly qualified to AEC-Q101 and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units, transmission control modules, and ADAS sensor interfaces. Its SMPC (TO-277A) package meets MSL Level 1 and is halogen-free and RoHS-compliant - all requirements aligned with modern automotive electronics manufacturing standards. The TPC43AHM3/86A also passes JESD201 Class 2 whisker testing.
What does the 'HM3/86A' suffix indicate in TPC43AHM3/86A?
The 'HM3/86A' suffix in TPC43AHM3/86A identifies the packaging and revision: 'HM3' denotes the halogen-free, RoHS-compliant, AEC-Q101-qualified base package code per Vishay's eSMP Series nomenclature, while '/86A' specifies the tape-and-reel delivery format (7-inch reel, 1500 units per reel) and revision level 'A'. This distinguishes it from alternate packaging variants like 'HE3/86A' (same specs, different reel size) and confirms full compliance documentation traceability for production use.
How does the dual-cathode configuration of the TPC43AHM3/86A improve protection performance?
The TPC43AHM3/86A features two parallel cathode terminals (Pins 1 and 2) to reduce effective surge impedance and improve current sharing during high-amplitude transients. This dual-cathode design lowers incremental resistance during clamping, minimizing VC overshoot and enhancing energy dissipation efficiency. In practice, this configuration allows the TPC43AHM3/86A to sustain 1500 W peak pulse power with tighter clamping control than single-terminal equivalents - critical for protecting sensitive 3.3 V or 5 V logic interfaces.
Can the TPC43AHM3/86A be used in bidirectional transient protection circuits?
No, the TPC43AHM3/86A is strictly unidirectional and must not be used for bidirectional protection. Its internal structure supports clamping only for positive-going transients relative to ground; reverse polarity surges will not be suppressed. For bidirectional applications - such as AC line inputs or differential bus lines - a dedicated bidirectional TVS (e.g., TPC43CA variant) or back-to-back unidirectional configuration is required. Using the TPC43AHM3/86A in bidirectional roles risks failure and unprotected system exposure.
TPC43AHM3/86A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- PAR®, eSMP®
- 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:
- TO-277A (SMPC)
TPC43AHM3/86A FAQ
1.How can I place an order for TPC43AHM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC43AHM3/86A 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 TPC43AHM3/86A reliable?
The price and inventory of TPC43AHM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC43AHM3/86A is usually 5 days.
3.What payment methods are accepted for TPC43AHM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC43AHM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC43AHM3/86A?
TPC43AHM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC43AHM3/86A 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 TPC43AHM3/86A?
For technical support, including TPC43AHM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC43AHM3/86A requirements.
6.How does Aetrix verify that TPC43AHM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC43AHM3/86A 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 TPC43AHM3/86A meets industry standards.
7.What is the process for return or replacement of TPC43AHM3/86A?
All TPC43AHM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC43AHM3/86A, 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 TPC43AHM3/86A part is unused and in its original packaging.
Return procedure for TPC43AHM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC43AHM3/86A Tags
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