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Vishay General Semiconductor - Diodes Division TPC12AHM3_A/I
- Part No.:
- TPC12AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC12AHM3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,852
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Product details
Overview
TPC12AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability protection of MOSFETs and ICs against inductive switching transients and lightning surges. It features a 11.4 V minimum breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 16.7 V clamping voltage at 89.8 A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPC12AHM3_A/I datasheet, TPC12AHM3_A/I pinout, TPC12AHM3_A/I application, or TPC12AHM3_A/I equivalent, key selection criteria include unidirectional clamping performance, 185 °C junction temperature rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on industrial and automotive PCBs.
Technical Context
The TPC12AHM3_A/I employs passivated anisotropic rectifier technology optimized for fast transient response and low incremental surge resistance. Its unidirectional architecture provides forward-biased clamping during overvoltage events, with a typical 3.5 V forward voltage at 100 A and 200 A non-repetitive surge capability (IFSM).
Designed for automotive-grade reliability, it operates across -65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance. The device is halogen-free, RoHS-compliant, and qualified per AEC-Q101 stress test requirements including temperature cycling, HTRB, and HTGB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - defines precise voltage threshold at which clamping initiates under 1.0 mA test current |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2.0 μA |
| VC @ IPPM | 16.7 V - clamped voltage during 10/1000 μs surge, limiting downstream component stress |
| IPPM | 89.8 A - peak pulse current handling capacity at rated 1500 W power dissipation |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | TO-277A (SMPC) - surface-mount, 3-terminal, low-profile (1.1 mm height) package for dense PCB layouts |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test standard including HTGB and temperature cycling |
Pinout & Package
TO-277A (SMPC) is a 3-terminal surface-mount package with cathode-anode-cathode configuration. Dimensions conform to JEDEC TO-277A standard: 4.80 mm × 3.70 mm footprint, 1.1 mm typical height, and matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Cathode) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Terminal 2 (Anode) | Forward reference node | Typically tied to system ground; establishes clamping reference point for unidirectional operation |
| Terminal 3 (Cathode) | Redundant cathode path | Provides parallel current path to reduce thermal resistance and improve surge handling uniformity |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR over lifetime and temperature |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules such as ADAS ECUs and motor control inverters |
| MSL Level 1 | No floor life limitation - supports unlimited exposure to ambient conditions prior to reflow |
| Automated placement compatibility | Standardized TO-277A footprint and lead geometry - compatible with high-speed pick-and-place equipment |
| Halogen-free & RoHS | Meets environmental compliance for automotive and industrial end markets without compromising surge robustness |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting gate drivers and high-side MOSFETs in 12 V/48 V hybrid vehicle DC-DC converters from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes within 1 ns response time to prevent gate oxide rupture. Use Value: Enables reliable operation at 185 °C junction temperature and withstands 200 A surge pulses without degradation. | Use Scenario: Safeguarding IGBT gate terminals and feedback signal lines in variable-frequency drives exposed to EMI and switching noise. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at power stage input to limit dv/dt-induced false triggering. Use Value: 16.7 V clamping voltage at 89.8 A ensures MOSFETs remain below absolute maximum VDS ratings during 1500 W transients. |
| Automotive Body Electronics | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs in door modules and lighting control units from battery reverse polarity and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing >1000 V transients while maintaining <2.0 μA leakage at 10.2 V. Use Value: AEC-Q101 qualification and MSL Level 1 support zero-defect manufacturing and long-term field reliability. | Use Scenario: Protecting PoE-powered Ethernet PHYs and DC-DC controllers in network switches from lightning-induced common-mode surges on 48 V supply rails. IC Role / Device Role / Timing Role: Primary-level unidirectional suppression on DC input side, coordinated with secondary-side TVS arrays. Use Value: 1500 W peak power rating and low incremental surge resistance minimize voltage overshoot during multi-pulse events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400 W), SMA package (higher thermal resistance), VC = 19.9 V at 32.4 A | Not AEC-Q101 qualified; limited to commercial/industrial use, not automotive | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| TPC12AHE3_A/I | Same electrical specs but HM3 vs HE3 tape/reel packaging; identical TO-277A die and construction | No functional difference - only packaging variant for different reel diameter (7" vs 13") and base quantity | Choose based on production line feeder compatibility and order volume requirements |
Compared with SMAJ12A and TPC12AHE3_A/I, the TPC12AHM3_A/I delivers higher surge robustness (1500 W vs 400 W), automotive qualification, and lower clamping voltage - making it optimal for safety-critical powertrain and body electronics where transient immunity must exceed ISO 7637-2 Pulse 5a requirements.
Availability
TPC12AHM3_A/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom power interface applications requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for TPC12AHM3_A/I 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 reliability, efficiency, and application-specific optimization.
The TPC series was developed specifically for high-power, high-temperature automotive and industrial transient suppression, combining AEC-Q101 qualification, 185 °C operation, and TO-277A's low-inductance layout to meet stringent ISO 16750 and IEC 61000-4-5 requirements.
FAQ
What is the clamping voltage of the TPC12AHM3_A/I under full 1500 W surge conditions?
The TPC12AHM3_A/I clamps to 16.7 V at its rated peak pulse current of 89.8 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed per datasheet Table 1 and reflects actual device behavior under worst-case surge conditions, ensuring protected circuits remain within safe voltage margins. The TPC12AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the TPC12AHM3_A/I suitable for automotive under-hood applications?
Yes, the TPC12AHM3_A/I is AEC-Q101 qualified 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 DC-DC converters. Its TO-277A package and passivated die structure ensure long-term reliability under thermal cycling and humidity exposure per automotive qualification standards.
How does the TO-277A package of the TPC12AHM3_A/I compare to SMA or SMC packages in surge handling?
The TO-277A (SMPC) package used by the TPC12AHM3_A/I offers lower thermal resistance and higher surge current capability than SMA or SMC due to its dual-cathode layout and larger copper area. Unlike SMA, TO-277A supports 89.8 A peak pulse current at 16.7 V clamping - critical for meeting ISO 7637-2 Pulse 5a requirements. The TPC12AHM3_A/I's package also enables better PCB heat spreading and automated placement accuracy.
Does the TPC12AHM3_A/I have any special handling or storage requirements?
No special handling is required: the TPC12AHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and no bake requirement before reflow. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102, and the halogen-free molding compound meets UL 94 V-0. These characteristics simplify logistics and manufacturing for the TPC12AHM3_A/I in high-volume SMT lines.
What is the reverse leakage current specification for the TPC12AHM3_A/I at maximum operating temperature?
At VWM = 10.2 V and TJ = 150 °C, the TPC12AHM3_A/I exhibits a maximum reverse leakage current (ID) of 2.0 μA, as specified in the Electrical Characteristics table. This low leakage ensures minimal standby power loss and signal integrity in always-on automotive modules. The TPC12AHM3_A/I maintains tight leakage control even at elevated temperatures due to its passivated junction design.
TPC12AHM3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for TPC12AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC12AHM3_A/I 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_A/I reliable?
The price and inventory of TPC12AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC12AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPC12AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC12AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC12AHM3_A/I?
TPC12AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC12AHM3_A/I 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_A/I?
For technical support, including TPC12AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC12AHM3_A/I requirements.
6.How does Aetrix verify that TPC12AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC12AHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of TPC12AHM3_A/I?
All TPC12AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC12AHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for TPC12AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC12AHM3_A/I Tags
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