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Vishay General Semiconductor - Diodes Division TPC6.8HM3/86A
- Part No.:
- TPC6.8HM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8HM3/86A.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
TPC6.8HM3/86A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for clamping inductive-switching transients on automotive sensor signal lines. It features 6.8 V nominal breakdown voltage (VBR), 5.8 V standoff voltage (VWM), 10.5 V maximum clamping voltage at 143 A peak pulse current, and AEC-Q101 qualification for under-hood electronics protection.
For engineers reviewing the TPC6.8HM3/86A datasheet, TPC6.8HM3/86A pinout, TPC6.8HM3/86A application, or TPC6.8HM3/86A equivalent, key selection criteria include unidirectional polarity, 185 °C junction rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on automotive-grade PCBs.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and load-dump transients per ISO 7637-2 and IEC 61000-4-2. Its junction passivation ensures stable performance across -65 °C to +185 °C operating range.
The device operates exclusively in unidirectional mode with cathode-anode polarity, requiring correct orientation during layout. Clamping behavior is defined by the 10/1000 µs waveform standard (ANSI/IEEE C62.35), with derated power capability above 25 °C ambient per published thermal curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nom) | 6.8 V - Breakdown initiates reliably at this voltage under 10 mA test current, defining overvoltage trip threshold |
| VWM | 5.8 V - Maximum continuous reverse voltage before leakage exceeds 1500 µA, sets operating margin below VBR |
| VC @ IPPM | 10.5 V - Clamped voltage at 143 A peak pulse, determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform, defines single-event surge robustness |
| TJ max | +185 °C - Enables use in high-temperature automotive locations without thermal derating penalties |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm profile, optimized for automated placement |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components including temperature cycling and HTRB |
Pinout & Package
TPC6.8HM3/86A uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with cathode band marking, matte tin-plated leads, and UL 94 V-0 molding compound. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded |
| 2 (Cathode) | Parallel cathode path | Internally tied to Pin 1; provides redundant current path and lowers effective dynamic resistance |
| 3 (Anode) | Reference node | Connected to system ground; completes clamping loop and establishes reference for VBR/VC specification |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable VBR and low leakage (<1500 µA at VWM) across full temperature range and lifetime |
| Low profile (1.1 mm height) | Reduces board-level mechanical interference and enables use in space-constrained modules like ADAS sensors |
| MSL Level 1 rating | Allows unlimited floor life and reflow without baking, simplifying SMT manufacturing flow |
| Very fast response time | Sub-nanosecond turn-on ensures clamping occurs before sensitive IC inputs are damaged by ESD or switching spikes |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements including ELV and IMDS reporting |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kick in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground, absorbing transients before they reach the transceiver input stage. Use Value: Prevents latch-up or permanent damage to automotive-grade transceivers rated for ≤12 V operation while maintaining signal integrity during normal 5–12 V operation. | Use Scenario: Safeguarding digital input terminals of programmable logic controllers against field-wiring surges and relay contact bounce in factory automation systems. IC Role / Device Role / Timing Role: Standoff-mode protector on 24 V DC input channels, conducting only during >30 V transients to avoid false triggering. Use Value: Eliminates need for external series impedance or RC filtering, reducing BOM count while meeting IEC 61000-4-4 level 4 immunity requirements. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Shielding USB-C PD port data lines and VBUS monitoring circuits from ESD events during hot-plug insertion in laptop adapters. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector, shunting ±8 kV contact discharge away from USB controller PHY. Use Value: Maintains signal integrity up to 10 Gbps (USB3.2 Gen2x2) due to minimal parasitic capacitance and sub-ns response. | Use Scenario: Front-end protection of Ethernet PHY interfaces on telecom line cards exposed to lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Primary clamping device on differential pairs, coordinated with common-mode chokes to handle asymmetrical surges. Use Value: Withstands 1500 W peak pulse energy per IEC 61000-4-5 combination wave, enabling single-stage protection architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/5BT | DO-214AC package; 600 W PPPM; 11.5 V VC @ 62.9 A; no AEC-Q101 qualification | Limited to commercial/industrial use; unsuitable for under-hood automotive deployment | Select when cost sensitivity outweighs automotive qualification and higher surge capacity is not required |
| TPC6.8AHM3_A | Same die, identical specs, but HM3_A suffix denotes revision A instead of 86A; same SMPC package and marking | No functional or application difference; both meet AEC-Q101 and share identical thermal and electrical behavior | Preferred for new designs where latest revision traceability is mandated by OEM change control processes |
Compared with SMAJ6.8A-E3/5BT and TPC6.8AHM3_A, the TPC6.8HM3/86A delivers 2.5× higher surge power handling and automotive qualification-critical for engine bay sensor nodes-while sharing footprint compatibility with other TPC-series variants for scalable BOM management.
Availability
TPC6.8HM3/86A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and telecom line card surge protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for TPC6.8HM3/86A 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 MOSFETs for high-reliability applications.
The TPC series is part of Vishay's PAR® transient voltage suppressor family, engineered specifically for automotive-grade surge protection with enhanced thermal robustness and AEC-Q101 validation.
FAQ
What is the exact breakdown voltage tolerance for TPC6.8HM3/86A?
The TPC6.8HM3/86A has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, with 6.80 V as the nominal value. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes from -65 °C to +185 °C, as verified in the Vishay document 89056.
Does TPC6.8HM3/86A support bidirectional transient suppression?
No, TPC6.8HM3/86A is strictly unidirectional and must be oriented with cathodes toward the protected line and anode to ground. It does not provide reverse-polarity protection or symmetrical clamping. For bidirectional applications, Vishay offers separate part numbers such as the TPSC series, not the TPC6.8HM3/86A.
What is the mounting pad layout recommendation for TPC6.8HM3/86A?
The recommended PCB pad layout for TPC6.8HM3/86A follows JEDEC TO-277A standards: 4.80 mm × 3.70 mm land pattern with 0.75 mm internal clearance, 1.27 mm minimum solder mask opening, and 2 oz. copper pour for thermal dissipation. Full dimensions are provided in Figure 4 of Vishay document 89056.
Is TPC6.8HM3/86A compatible with lead-free reflow profiles?
Yes, TPC6.8HM3/86A is qualified for lead-free reflow per J-STD-020, supporting peak temperatures up to 260 °C. Its matte tin-plated terminals ensure reliable wetting, and its MSL Level 1 rating permits unlimited exposure prior to soldering without preconditioning.
How does the temperature coefficient affect VBR stability in TPC6.8HM3/86A?
The TPC6.8HM3/86A has a typical VBR temperature coefficient (αT) of 0.047 %/°C. This means VBR increases by ~0.032 V per 10 °C rise above 25 °C, ensuring predictable upward drift rather than collapse-critical for maintaining margin over VWM in high-temperature automotive environments.
TPC6.8HM3/86A 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):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 139A
- 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)
TPC6.8HM3/86A FAQ
1.How can I place an order for TPC6.8HM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8HM3/86A 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 TPC6.8HM3/86A reliable?
The price and inventory of TPC6.8HM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC6.8HM3/86A is usually 5 days.
3.What payment methods are accepted for TPC6.8HM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8HM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8HM3/86A?
TPC6.8HM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8HM3/86A 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 TPC6.8HM3/86A?
For technical support, including TPC6.8HM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8HM3/86A requirements.
6.How does Aetrix verify that TPC6.8HM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC6.8HM3/86A 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 TPC6.8HM3/86A meets industry standards.
7.What is the process for return or replacement of TPC6.8HM3/86A?
All TPC6.8HM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8HM3/86A, 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 TPC6.8HM3/86A part is unused and in its original packaging.
Return procedure for TPC6.8HM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8HM3/86A Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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