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Vishay General Semiconductor - Diodes Division TPC12HM3/86A
- Part No.:
- TPC12HM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC12HM3/86A.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,187
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Product details
Overview
TPC12HM3/86A 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 surge 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 AEC-Q101 qualification for under-hood applications.
For engineers reviewing the TPC12HM3/86A datasheet, TPC12HM3/86A pinout, TPC12HM3/86A application, or TPC12HM3/86A equivalent, key selection criteria include its 185 °C junction temperature rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and unidirectional polarity optimized for DC rail protection in automotive ECUs and sensor interfaces.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable breakdown behavior and low incremental surge resistance. Its 10/1000 µs waveform capability supports 1500 W peak pulse power dissipation with fast response time and minimal voltage overshoot during transients induced by inductive load switching.
The device operates across -65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance requirements. Its SMPC (TO-277A) package enables automated placement and provides UL 94 V-0 compliant molding compound for harsh-environment reliability.
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 - clamps transient energy to safe level for protected MOSFETs or microcontrollers |
| IPPM | 89.8 A - peak surge current handling per 10/1000 µs waveform without failure |
| PPPM | 1500 W - high-energy absorption capacity for ISO 7637-2 Pulse 1/2a/5a compliance |
| TJ max. | +185 °C - enables operation in engine compartment environments without derating |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm height), AEC-Q101 qualified |
Pinout & Package
SMPC (TO-277A) is a 3-terminal surface-mount package with cathode band marking on terminal 1. The package features matte tin-plated leads, conforms to JEDEC TO-277A outline, and supports automated pick-and-place assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side reference node | Connected to protected line; cathode band identifies polarity for unidirectional operation |
| 2 (Cathode) | Main cathode connection | Common cathode path shared with terminal 1; both cathodes tied internally |
| 3 (Anode) | Ground return path | Connected to system ground or low-impedance return plane to shunt surge current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use with full temperature cycling, humidity, and mechanical stress testing |
| MSL Level 1 rating | Zero floor life limitation - no baking required prior to reflow soldering |
| Junction temperature capability | 185 °C maximum operating temperature enables direct mounting near heat sources |
| Low-profile height | 1.1 mm typical height reduces board clearance issues in compact ECU modules |
| Passivated anisotropic rectifier | Stable VBR tolerance (±5 %) and low dynamic impedance improve clamping consistency |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of 12 V supply rail against load dump and inductive kickback from solenoids and fuel injectors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and LDO/regulator input to clamp transients below 17 V. Use Value: Prevents regulator latch-up or burnout during ISO 7637-2 Pulse 5a (load dump), leveraging 1500 W peak power rating and 185 °C thermal margin. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers connected to H-bridge MOSFETs. IC Role / Device Role / Timing Role: TVS mounted across motor phase outputs to absorb commutation spikes and prevent shoot-through. Use Value: 16.7 V clamping voltage limits voltage stress on 20 V-rated gate drivers, while low 1.1 mm profile fits tight PCB spacing near power stages. |
| Automotive Sensor Signal Line | Telecom Power Supply Input |
Use Scenario: Protecting LIN bus or analog sensor inputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS placed on signal line with series resistor to limit current into MCU I/O pins. Use Value: 10.2 V VWM allows normal 5–12 V signal operation while clamping ESD pulses to <17 V, meeting ISO 10605 requirements. | Use Scenario: Front-end protection of 12 V telecom power supplies exposed to lightning-induced surges on long-line feeds. IC Role / Device Role / Timing Role: Primary TVS stage before DC/DC converter input to absorb bulk surge energy before secondary protection. Use Value: 1500 W PPPM rating handles 10/1000 µs surges up to 89.8 A, reducing need for cascaded protection stages. |
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 (higher thermal resistance), VC = 19.9 V at 32.4 A | Not AEC-Q101 qualified; limited to commercial/industrial ambient temperatures (TJ ≤ 150 °C) | Choose for cost-sensitive non-automotive designs where 1500 W surge capacity is not required |
| TPC12A | Same electrical specs and SMPC package, but HM3/86A suffix indicates halogen-free, RoHS-compliant, and JESD201 Class 2 whisker-tested version | No functional difference; HM3/86A adds material compliance and enhanced plating reliability for automotive production | TPC12HM3/86A is the preferred variant for automotive OEM programs requiring full AEC-Q101 traceability and whisker resistance |
Compared with SMAJ12A and TPC12A, TPC12HM3/86A delivers higher surge robustness (1500 W vs. 400 W), extended thermal operation (+185 °C), and automotive-grade process controls-making it optimal for safety-critical 12 V rail protection where reliability and regulatory compliance are mandatory.
Availability
TPC12HM3/86A is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, sensor interface circuits, and telecom power supply inputs requiring stable component supply and AEC-Q101 assurance.
Supply support for TPC12HM3/86A 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 reliability and automotive qualification.
The TPC12HM3/86A belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression in space-constrained, high-temperature environments.
FAQ
What is the exact breakdown voltage tolerance for TPC12HM3/86A?
The TPC12HM3/86A has a nominal breakdown voltage (VBR) of 12.0 V with a guaranteed range of 11.4 V (min) to 12.6 V (max) at 1.0 mA test current, corresponding to ±5 % tolerance. This specification is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 19-Apr-2022, Document Number 89056. The TPC12HM3/86A maintains this tolerance across its full operating temperature range.
Is TPC12HM3/86A suitable for bidirectional transient protection?
No, the TPC12HM3/86A is strictly unidirectional and must be used only in DC applications where polarity is fixed. Its internal structure supports conduction only from anode to cathode during reverse-biased transients. For bidirectional protection, Vishay offers separate part numbers such as the P6SMB12CA. Using TPC12HM3/86A in AC or reversible-polarity circuits will result in improper clamping or device failure.
Does TPC12HM3/86A require derating above 25 °C ambient temperature?
Yes, the TPC12HM3/86A requires derating of peak pulse power (PPPM) above 25 °C ambient, per Figure 2 in the Vishay datasheet. At 85 °C ambient, PPPM is reduced to approximately 75 % of 1500 W (i.e., ~1125 W), and at 125 °C, it drops to ~50 %. Derating is based on junction temperature limits and thermal resistance of the SMPC package mounted on standard PCB layouts.
What is the meaning of the "HM3/86A" suffix in TPC12HM3/86A?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMPC package with matte tin plating, while "86A" is the revision code indicating the specific manufacturing lot and process control iteration. This suffix confirms compliance with JESD201 Class 2 whisker resistance testing and UL 94 V-0 flammability rating-critical for automotive production traceability. The TPC12HM3/86A is not interchangeable with non-HM3 variants without verifying plating and qualification status.
Can TPC12HM3/86A be used in parallel for higher surge current handling?
No, paralleling multiple TPC12HM3/86A devices is not recommended due to mismatch in dynamic impedance and VBR tolerance, which causes uneven current sharing and potential thermal runaway. Vishay specifies single-device operation only. For higher surge ratings, select a higher-power TVS such as TPC22HM3/86A (22 V, 1500 W) or consult Vishay's application note AN934 for staged protection architectures using TPC12HM3/86A as a secondary clamp.
TPC12HM3/86A 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 86.7A
- 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)
TPC12HM3/86A FAQ
1.How can I place an order for TPC12HM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC12HM3/86A 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 TPC12HM3/86A reliable?
The price and inventory of TPC12HM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC12HM3/86A is usually 5 days.
3.What payment methods are accepted for TPC12HM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC12HM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC12HM3/86A?
TPC12HM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC12HM3/86A 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 TPC12HM3/86A?
For technical support, including TPC12HM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC12HM3/86A requirements.
6.How does Aetrix verify that TPC12HM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC12HM3/86A 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 TPC12HM3/86A meets industry standards.
7.What is the process for return or replacement of TPC12HM3/86A?
All TPC12HM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC12HM3/86A, 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 TPC12HM3/86A part is unused and in its original packaging.
Return procedure for TPC12HM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC12HM3/86A Tags
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