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Vishay General Semiconductor - Diodes Division TPC6.8AHM3_A/H
- Part No.:
- TPC6.8AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8AHM3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,247
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Product details
Overview
TPC6.8AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 6.45 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage at 143 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the TPC6.8AHM3_A/H datasheet, TPC6.8AHM3_A/H pinout, TPC6.8AHM3_A/H application, or TPC6.8AHM3_A/H 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 consumer, industrial, and automotive PCBs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver fast response time and low incremental surge resistance. Its unidirectional architecture enables integration into DC power rail protection paths where reverse polarity blocking is required, such as 5 V or 12 V supply inputs feeding microcontrollers or MOSFET gate drivers.
The device operates across -65 °C to +185 °C junction temperature range and maintains stable clamping under repetitive surge conditions when derated per Fig. 2 of the datasheet. Its TO-277A (SMPC) package supports high thermal dissipation while meeting JESD 201 Class 2 whisker resistance and RoHS/halogen-free compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - Ensures reliable triggering above 5.8 V system operating voltage without false conduction |
| VWM | 5.8 V - Maximum continuous reverse voltage before leakage exceeds 1500 μA at 25 °C |
| VC @ IPPM | 10.5 V - Clamps 143 A 10/1000 μs surge to safe level for downstream 5 V logic or analog circuitry |
| PPPM | 1500 W - Handles high-energy transients common in automotive load-dump and inductive switch-off events |
| TJ max | +185 °C - Supports operation in under-hood automotive environments and high-power industrial enclosures |
| Package | TO-277A (SMPC) - 3-pin surface-mount package with 1.1 mm profile, optimized for automated pick-and-place |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components including temperature cycling and HTRB |
Pinout & Package
TO-277A (SMPC) package: 3-terminal surface-mount configuration with cathode-anode-cathode layout; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal for clamping | Connected to protected line (e.g., 5 V rail); conducts during overvoltage to shunt current to ground |
| 2 (Anode) | Reference/ground connection | Typically tied to system ground plane; establishes reference for unidirectional clamping action |
| 3 (Cathode) | Reverse-biased terminal for clamping | Electrically parallel to Pin 1; doubles current-handling capacity and improves thermal distribution |
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 like ADAS ECUs and compact sensor nodes |
| MSL Level 1 | No floor life limitation - Eliminates bake requirements prior to reflow, reducing manufacturing overhead |
| Automated placement ready | Standardized TO-277A footprint compatible with industry-standard SMT feeders and vision alignment systems |
| Halogen-free & RoHS | HM3 suffix denotes compliance with environmental regulations and automotive material categorization (Doc. 99912) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 5 V power input to engine control unit (ECU) against ISO 7637-2 pulse 1 and pulse 2b transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and local bulk capacitor. Use Value: Limits voltage excursion to ≤10.5 V during 143 A surge, preventing latch-up or damage to 5 V LDOs and MCU power domains. |
Use Scenario: Safeguarding analog output line of pressure sensor in factory automation PLC module exposed to relay coil kickback. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at sensor connector interface. Use Value: Clamps 10/1000 μs surges to <11 V within nanoseconds, preserving 12-bit ADC accuracy and avoiding signal corruption. |
| Consumer USB Power Input Protection | Telecom DC Feeder Protection |
|
Use Scenario: Guarding USB-C VBUS line in portable docking station against hot-plug induced overshoot and ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V input path upstream of USB PD controller. Use Value: Withstands 1500 W surges while maintaining <1 μA leakage at 5 V, ensuring no impact on USB enumeration timing. |
Use Scenario: Protecting 48 V DC feeder line in remote radio head (RRH) against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary clamping stage after gas discharge tube (GDT), handling residual energy. Use Value: Delivers precise 10.5 V clamping at 143 A, enabling coordination with upstream GDT to limit let-through energy below 100 mJ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A | Lower PPPM (400 W), higher VC (10.5 V @ 64.5 A), SMA package (higher profile, lower surge rating) | Suitable for lower-energy consumer interfaces but not automotive load-dump events | Select when cost sensitivity outweighs surge margin and board space allows larger package |
| TPC6.8AHM3_A/I | Identical electrical specs; differs only in packaging - 13" tape/reel (6500 pcs) vs. 7" reel (1500 pcs) | No functional difference; used for high-volume production runs requiring extended reel length | Choose based on production volume and SMT line feeder compatibility, not performance |
Compared with SMAJ6.0A, TPC6.8AHM3_A/H delivers 3.75× higher peak power handling and AEC-Q101 qualification, making it suitable for harsh automotive environments; versus TPC6.8AHM3_A/I, it offers identical protection performance with optimized reel size for mid-volume builds.
Availability
TPC6.8AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPC6.8AHM3_A/H 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 TPC6.8AHM3_A/H belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of TPC6.8AHM3_A/H at its rated peak pulse current?
The TPC6.8AHM3_A/H has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated 143 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures downstream 5 V logic circuits remain within safe operating limits during surge events. The low VC is achieved through optimized junction passivation and low incremental surge resistance inherent to the TPC6.8AHM3_A/H design.
Is TPC6.8AHM3_A/H suitable for automotive applications?
Yes, TPC6.8AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and body-control module applications. Its TO-277A package meets JESD 201 Class 2 whisker resistance, and the HM3 suffix confirms halogen-free, RoHS-compliant construction aligned with automotive material requirements per Vishay Doc. 99912. These attributes are explicitly verified for the TPC6.8AHM3_A/H in the official datasheet revision 04-Nov-16.
What does the "HM3_A/H" suffix in TPC6.8AHM3_A/H indicate?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified molding compound and plating system; "A" is the revision code; "H" specifies the preferred package code for 7-inch diameter plastic tape and reel with 1500 units per reel. This full suffix identifies the exact manufacturing and packaging configuration of TPC6.8AHM3_A/H, distinguishing it from variants like TPC6.8AHM3_A/I (13-inch reel).
How does the TO-277A package of TPC6.8AHM3_A/H compare to SMA or SMC packages in surge handling?
The TO-277A (SMPC) package of TPC6.8AHM3_A/H provides superior thermal dissipation and lower thermal impedance compared to SMA or SMC, enabling its 1500 W peak pulse power rating. Its dual-cathode structure distributes surge current across two terminals, reducing localized heating. Unlike SMA packages, TO-277A maintains mechanical stability during high-current pulses and supports automated placement without tombstoning-key advantages confirmed for TPC6.8AHM3_A/H in Vishay's mechanical and ratings data.
What is the maximum reverse leakage current of TPC6.8AHM3_A/H at its stand-off voltage?
At VWM = 5.8 V and TA = 25 °C, the TPC6.8AHM3_A/H exhibits a maximum reverse leakage current (IR) of 1500 μA. At elevated temperature (TJ = 150 °C), leakage increases to 10,000 μA - a value explicitly specified in the Electrical Characteristics table for TPC6.8A. This controlled leakage ensures minimal impact on low-power sensor bias networks while maintaining effective clamping readiness.
TPC6.8AHM3_A/H 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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)
TPC6.8AHM3_A/H FAQ
1.How can I place an order for TPC6.8AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8AHM3_A/H 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 TPC6.8AHM3_A/H reliable?
The price and inventory of TPC6.8AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC6.8AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC6.8AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8AHM3_A/H?
TPC6.8AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8AHM3_A/H 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 TPC6.8AHM3_A/H?
For technical support, including TPC6.8AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8AHM3_A/H requirements.
6.How does Aetrix verify that TPC6.8AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC6.8AHM3_A/H 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 TPC6.8AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC6.8AHM3_A/H?
All TPC6.8AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8AHM3_A/H, 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 TPC6.8AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC6.8AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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