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Vishay General Semiconductor - Diodes Division TPC12AHM3/86A
- Part No.:
- TPC12AHM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC12AHM3/86A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,997
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Product details
Overview
TPC12AHM3/86A 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 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 16.7 V maximum clamping voltage (VC) at 89.8 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC12AHM3/86A datasheet, TPC12AHM3/86A pinout, TPC12AHM3/86A application, or TPC12AHM3/86A equivalent, key selection criteria include unidirectional surge handling for inductive load switching, AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on automotive ECUs and sensor interfaces.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance, enabling robust clamping of 10/1000 µs transients without thermal runaway. Its junction temperature rating of +185 °C supports under-hood automotive environments where sustained thermal stress occurs.
The device is rated for non-repetitive 1500 W peak pulse power per JEDEC-standard 10/1000 µs waveform and delivers 89.8 A peak pulse current (IPPM) while maintaining clamping below 16.7 V - critical for protecting 12 V rail MOSFETs and microcontrollers against load dump and ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 12.0 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 10.2 V - maximum continuous reverse voltage compatible with 12 V automotive systems |
| VC @ IPPM | 16.7 V - clamping voltage at 89.8 A limits stress on protected 12 V logic and power stages |
| PPPM | 1500 W - handles severe transients like ISO 16750-2 load dump surges |
| TJ max. | +185 °C - enables operation in engine control units and powertrain modules |
| Package | SMPC (TO-277A) - 3-pin surface-mount package with 1.1 mm profile for space-constrained PCBs |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with cathode band marking. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side cathode terminal | Common cathode connection for dual-cathode configuration; ties to protected circuit's positive rail |
| 2 (Cathode) | Anode-side cathode terminal | Second cathode terminal - electrically parallel to Pin 1; enables higher surge current sharing |
| 3 (Anode) | Ground reference node | Connected to system ground or chassis; completes clamping path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Protects only against positive transients on DC rails - ideal for 12 V battery-fed circuits without reverse polarity risk |
| Low-profile SMPC package | 1.1 mm typical height enables use in compact automotive modules where Z-height is constrained by shielding or enclosures |
| MSL Level 1 rating | Zero floor life limitation - supports unlimited exposure to ambient conditions prior to reflow soldering |
| Junction passivation | Enhanced long-term stability under thermal cycling and humidity, critical for 15+ year automotive service life |
| Halogen-free & RoHS | Complies with automotive material restrictions (JESD201 Class 2 whisker resistance, UL 94 V-0 molding compound) |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of MCU I/O and power FET gate drivers against load dump and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and protected IC inputs to clamp transients within safe voltage margins. Use Value: Clamps 12 V rail surges to ≤16.7 V at 89.8 A, preventing latch-up or oxide breakdown in 3.3 V/5 V logic and 40 V-rated MOSFETs. | Use Scenario: Safeguarding PLC analog input channels and digital isolator power supplies from inductive kickback in solenoid and relay control circuits. IC Role / Device Role / Timing Role: Primary transient suppression on 24 V DC control lines feeding signal conditioning circuitry. Use Value: Withstands 1500 W pulses without degradation, ensuring long-term reliability in factory automation environments with frequent switching cycles. |
| Automotive Sensor Module (e.g., ABS, EPS) | Telecom Power Supply Input Stage |
Use Scenario: Shielding Hall-effect and IMU sensor signal paths from ESD and switching noise in safety-critical steering and braking subsystems. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential sensor lines to preserve signal integrity while suppressing >1 kV transients. Use Value: Fast <1 ns response time prevents transient coupling into sensitive analog front-ends; AEC-Q101 qualification validates suitability for ASIL-B systems. | Use Scenario: Front-end protection of AC/DC and DC/DC converters in base station power distribution units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after primary MOV/GDT stages to handle residual fast-rising edges and repetitive switching spikes. Use Value: 185 °C junction rating allows stable operation near hot power components; 1.1 mm profile fits dense power board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400 W), SMA package (2.5 mm height), no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to consumer or industrial indoor applications | Select when cost sensitivity outweighs surge margin and automotive compliance requirements |
| TPC12AHE3/86A | Same electrical specs, identical SMPC package, but HM3/86A suffix denotes halogen-free, RoHS-compliant, AEC-Q101 qualified version with JESD201 Class 2 whisker resistance | No functional difference - both meet same automotive reliability standards | Prefer TPC12AHM3/86A for full traceability to Vishay's qualified production lot documentation |
Compared with SMAJ12A and TPC12AHE3/86A, the TPC12AHM3/86A delivers 3.75× higher peak power handling in the same footprint, maintains AEC-Q101 compliance critical for OEM approvals, and offers verified whisker resistance for long-term solder joint integrity in thermally cycled automotive modules.
Availability
TPC12AHM3/86A is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom power supply input stages requiring stable component supply, long-lifecycle support, and AEC-Q101-certified reliability.
Supply support for TPC12AHM3/86A 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, high-efficiency solutions.
The TPC12AHM3/86A belongs to Vishay's PAR® series of surface-mount transient voltage suppressors, engineered specifically for automotive-grade surge protection in harsh environments including under-hood, powertrain, and ADAS subsystems.
FAQ
What is the clamping voltage of the TPC12AHM3/86A at its rated peak pulse current?
The TPC12AHM3/86A has a maximum clamping voltage (VC) of 16.7 V at its rated peak pulse current (IPPM) of 89.8 A, measured using the standard 10/1000 µs waveform. This value ensures that protected 12 V circuits remain within safe operating limits during severe transients such as load dump events. The TPC12AHM3/86A achieves this performance while maintaining low incremental surge resistance and fast response time.
Is the TPC12AHM3/86A qualified for automotive applications?
Yes, the TPC12AHM3/86A is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for automotive under-hood and powertrain applications. It meets JESD201 Class 2 whisker resistance, UL 94 V-0 flammability, and MSL Level 1 requirements. The TPC12AHM3/86A is explicitly listed in Vishay's automotive-grade product portfolio for use in ECUs, sensor modules, and body control units.
What does the 'HM3/86A' suffix indicate in TPC12AHM3/86A?
The 'HM3/86A' suffix in TPC12AHM3/86A identifies the halogen-free, RoHS-compliant, AEC-Q101-qualified variant with JESD201 Class 2 whisker resistance and TO-277A (SMPC) packaging. 'HM3' denotes Vishay's standard halogen-free construction, while '/86A' specifies the revision code and tape-and-reel packaging format (7" reel, 1500 pcs). This suffix confirms full compliance with automotive material and reliability standards required for TPC12AHM3/86A deployment.
How does the dual-cathode configuration of the TPC12AHM3/86A improve surge handling?
The TPC12AHM3/86A uses a dual-cathode (Pins 1 and 2) configuration in its SMPC package to distribute surge current across two parallel paths, reducing localized heating and improving thermal derating capability. This design enables the TPC12AHM3/86A to sustain 1500 W peak pulse power without exceeding its +185 °C junction limit. The shared cathode structure also lowers effective dynamic impedance during clamping, enhancing protection for sensitive downstream components.
Can the TPC12AHM3/86A replace SMAJ12A in existing designs?
The TPC12AHM3/86A is not a direct drop-in replacement for SMAJ12A due to different package dimensions (SMPC vs. SMA) and pinout - SMAJ12A is a 2-pin DO-214AC device, while TPC12AHM3/86A is a 3-pin SMPC device with dual cathodes. Although both have 12 V VBR, the TPC12AHM3/86A requires PCB layout changes. Its higher PPPM (1500 W vs. 400 W) and AEC-Q101 qualification make it suitable for upgraded automotive designs, but migration requires validation of thermal and mechanical integration for TPC12AHM3/86A.
TPC12AHM3/86A 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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)
TPC12AHM3/86A FAQ
1.How can I place an order for TPC12AHM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC12AHM3/86A 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 TPC12AHM3/86A reliable?
The price and inventory of TPC12AHM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC12AHM3/86A is usually 5 days.
3.What payment methods are accepted for TPC12AHM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC12AHM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC12AHM3/86A?
TPC12AHM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC12AHM3/86A 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 TPC12AHM3/86A?
For technical support, including TPC12AHM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC12AHM3/86A requirements.
6.How does Aetrix verify that TPC12AHM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC12AHM3/86A 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 TPC12AHM3/86A meets industry standards.
7.What is the process for return or replacement of TPC12AHM3/86A?
All TPC12AHM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC12AHM3/86A, 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 TPC12AHM3/86A part is unused and in its original packaging.
Return procedure for TPC12AHM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC12AHM3/86A Tags
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