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Vishay General Semiconductor - Diodes Division TPC6.8AHM3/87A
- Part No.:
- TPC6.8AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8AHM3/87A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,213
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Product details
Overview
TPC6.8AHM3/87A 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 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V clamping voltage at 143 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC6.8AHM3/87A datasheet, TPC6.8AHM3/87A pinout, TPC6.8AHM3/87A application, or TPC6.8AHM3/87A equivalent, this device is selected for robust ESD/surge protection on low-voltage power rails and signal lines where low-profile mounting, AEC-Q101 qualification, and fast response (<1 ns) are critical.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance under repetitive surge stress. Its unidirectional architecture enables integration into DC-biased circuits such as 5 V or 3.3 V supply rails, sensor interfaces, and MOSFET gate drivers without reverse leakage concerns at operating bias.
The device meets JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity requirements, with matte tin-plated terminals compliant to J-STD-002 and JESD22-B102. Its TO-277A package supports automated SMT placement and provides thermal robustness via direct die-to-cathode thermal path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V at 10 mA - defines precise overvoltage triggering threshold for circuit-level protection coordination |
| VWM | 5.8 V - maximum continuous reverse working voltage before leakage exceeds 1500 μA, suitable for 5 V systems |
| VC @ IPPM | 10.5 V at 143 A - clamping voltage during 10/1000 μs surge ensures downstream ICs remain below absolute max ratings |
| PPPM | 1500 W - peak pulse power handling capability per single 10/1000 μs waveform, enabling protection against ISO 7637-2 Pulse 1/2a/5a |
| TJ max | +185 °C - extended junction temperature rating supports under-hood automotive placement and high-ambient industrial use |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm typical height, optimized for space-constrained PCB layouts |
Pinout & Package
SMPC (TO-277A) is a 3-terminal surface-mount package with cathode band marking on terminal 1. The package features two cathode terminals (1 and 2) and one anode terminal (3), enabling dual-cathode parallel configuration for enhanced surge current sharing and reduced effective clamping impedance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Primary cathode connection | Marked by cathode band line; connects to protected line or ground return path in unidirectional clamp topology |
| 2 (Cathode) | Secondary cathode connection | Electrically identical to Pin 1; used to reduce bond wire inductance and improve surge current distribution |
| 3 (Anode) | Anode connection | Connects to protected line (e.g., 5 V rail or signal trace); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Low profile (1.1 mm typical height) | Enables placement beneath connectors or near tall components without mechanical interference in compact modules |
| Very fast response time (<1 ns) | Clamps transients before sensitive downstream logic or analog circuitry experiences damaging overvoltage |
| MSL Level 1 (J-STD-020) | Zero floor life limitation - can be stored indefinitely at ambient conditions prior to reflow soldering |
| Halogen-free, RoHS-compliant | Meets global environmental compliance requirements for automotive and industrial end equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller power inputs in engine control units exposed to ISO 7637-2 load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp surges above 5.8 V while maintaining low leakage during normal operation. Use Value: Clamps to 10.5 V at 143 A, ensuring MCU VCC stays within absolute maximum rating of 6.5 V and prevents latch-up or permanent damage. | Use Scenario: Safeguarding analog output lines of pressure or temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb ESD events and cable discharge transients. Use Value: Sub-1 ns response and 1.1 mm profile allow placement directly at connector entry point without compromising board real estate or signal integrity. |
| Consumer USB Power Delivery Protection | Telecom DC Power Input Protection |
Use Scenario: Securing 5 V USB Type-C VBUS lines in portable docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS installed between VBUS and chassis ground to limit transient overshoot during plug insertion or cable discharge. Use Value: 1500 W peak power rating and 5.8 V VWM ensure compatibility with USB PD 3.0 specifications while preventing false triggering during normal operation. | Use Scenario: Protecting -48 V telecom power input stages in remote radio units from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: TVS configured in series with current-limiting resistor to absorb differential-mode transients on DC feed lines. Use Value: +185 °C TJ rating and AEC-Q101 qualification enable reliable long-term operation in sealed outdoor enclosures with minimal thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A | Lower PPPM (400 W), higher VC (10.5 V @ 38.8 A), SMA package (higher profile, lower surge current capability) | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for under-hood automotive | Select when cost sensitivity outweighs surge margin and automotive qualification is not required |
| TPC6.8AHM3_A | Same electrical specs and TO-277A package; differs only in revision code (A vs. 87A) and tape/reel packaging (H vs. unspecified) | No functional or application difference; 87A denotes specific manufacturing lot or internal revision tracking | Prefer TPC6.8AHM3/87A for traceability in production programs requiring documented revision control |
Compared with SMAJ6.0A and TPC6.8AHM3_A, the TPC6.8AHM3/87A delivers superior surge robustness (1500 W vs. 400 W), automotive qualification, and dual-cathode low-inductance layout-making it optimal for high-reliability 5 V rail protection where failure modes must be rigorously controlled.
Availability
TPC6.8AHM3/87A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power delivery systems, and telecom DC power inputs requiring stable component supply across multi-year production cycles.
Supply support for TPC6.8AHM3/87A 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in power management, signal conditioning, and protection devices.
The TPC6.8AHM3/87A belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for high-power, low-profile transient suppression in automotive and harsh-environment industrial applications where AEC-Q101 compliance and thermal resilience are mandatory.
FAQ
What is the clamping voltage of the TPC6.8AHM3/87A at its rated peak pulse current?
The TPC6.8AHM3/87A has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current (IPPM) of 143 A under a 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 89056), and ensures protected circuits remain within safe voltage limits during surge events. The TPC6.8AHM3/87A maintains this clamping performance across its full operating temperature range.
Is the TPC6.8AHM3/87A qualified for automotive applications?
Yes, the TPC6.8AHM3/87A is AEC-Q101 qualified and explicitly rated for automotive-grade reliability. It undergoes stress testing including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JEDEC standards. Its +185 °C maximum junction temperature and halogen-free, RoHS-compliant construction meet stringent automotive requirements. The TPC6.8AHM3/87A is intended for use in engine control units, body electronics, and ADAS modules where qualification is mandatory.
What does the "HM3/87A" suffix indicate in TPC6.8AHM3/87A?
The "HM3" portion indicates the base package code for halogen-free, RoHS-compliant, AEC-Q101-qualified devices in the SMPC (TO-277A) package. The "87A" suffix denotes a specific internal revision or manufacturing lot identifier assigned by Vishay for traceability and process control. It does not alter electrical specifications or package dimensions - the TPC6.8AHM3/87A shares identical characteristics with TPC6.8AHM3_A per the official datasheet.
Can the TPC6.8AHM3/87A be used in bidirectional configurations?
No, the TPC6.8AHM3/87A is strictly unidirectional and not suitable for bidirectional transient suppression. Its internal structure supports conduction only in reverse bias (anode-to-cathode), making it appropriate for DC-biased lines like 5 V power rails or sensor outputs referenced to ground. For AC or bipolar signal lines, a dedicated bidirectional TVS such as the TPD6.8AHM3 must be selected - the TPC6.8AHM3/87A lacks symmetrical breakdown behavior and will not clamp in forward polarity.
What is the thermal resistance (RthJA) of the TPC6.8AHM3/87A under standard PCB conditions?
The TPC6.8AHM3/87A does not specify a fixed RthJA value in its datasheet because thermal performance depends heavily on PCB layout. However, Figure 5 shows transient thermal impedance curves for the device mounted on a recommended 2 oz. copper PCB pad layout. At 1 ms pulse duration, Rth is approximately 15 °C/W. For steady-state thermal design, engineers should refer to the package outline and apply thermal simulation using the TO-277A footprint dimensions - the TPC6.8AHM3/87A relies on copper area and via stitching for heat dissipation.
TPC6.8AHM3/87A 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):
- 5.8V
- 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)
TPC6.8AHM3/87A FAQ
1.How can I place an order for TPC6.8AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8AHM3/87A 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 TPC6.8AHM3/87A reliable?
The price and inventory of TPC6.8AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC6.8AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC6.8AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8AHM3/87A?
TPC6.8AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8AHM3/87A 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 TPC6.8AHM3/87A?
For technical support, including TPC6.8AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8AHM3/87A requirements.
6.How does Aetrix verify that TPC6.8AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC6.8AHM3/87A 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 TPC6.8AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC6.8AHM3/87A?
All TPC6.8AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8AHM3/87A, 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 TPC6.8AHM3/87A part is unused and in its original packaging.
Return procedure for TPC6.8AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8AHM3/87A Tags
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