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Vishay General Semiconductor - Diodes Division TPC6.8HM3/87A
- Part No.:
- TPC6.8HM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8HM3/87A.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
TPC6.8HM3/87A 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 a 6.8 V nominal breakdown voltage (VBR), 10.5 V maximum clamping voltage (VC) at 143 A peak pulse current, and AEC-Q101 qualification for under-hood electronics protection.
For engineers reviewing the TPC6.8HM3/87A datasheet, TPC6.8HM3/87A pinout, TPC6.8HM3/87A application, or TPC6.8HM3/87A equivalent, key selection criteria include its 1500 W peak pulse power rating, 185 °C junction temperature capability, low-profile 1.1 mm height, and unidirectional polarity for DC-biased signal line protection in automotive ECUs and ADAS modules.
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 16750-2. Its junction passivation ensures stable VBR drift (0.047 %/°C) and reliable operation up to TJ = 185 °C.
The device operates exclusively in unidirectional mode with a 5.8 V stand-off voltage (VWM) and 1500 μA max reverse leakage at 25 °C. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V - Ensures precise turn-on above circuit operating voltage while maintaining margin against false triggering |
| VWM | 5.8 V - Maximum continuous reverse voltage before significant leakage; compatible with 5 V logic and sensor supply rails |
| VC @ IPPM | 10.5 V - Clamped voltage during 143 A 10/1000 μs surge; protects downstream ICs rated for ≤12 V absolute max |
| PPPM | 1500 W - Sustains high-energy transients from inductive loads like solenoids and motors without failure |
| TJ max | +185 °C - Enables placement near heat sources in engine control units and powertrain modules |
| Package | SMPC (TO-277A) - Low-profile 3-pin surface-mount package with 1.1 mm typical height for compact PCB layouts |
Pinout & Package
TPC6.8HM3/87A uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with cathode band marking on terminal 1, cathode on terminal 2, and anode on terminal 3. The package measures 4.80 × 3.70 × 1.10 mm (L × W × H) and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Cathode | Primary cathode connection; marked side identifies polarity for correct orientation during automated placement |
| 2 (Cathode) | Cathode | Second cathode terminal; parallel connection lowers dynamic impedance during surge conduction |
| 3 (Anode) | Anode | Common anode node; connects to ground or low-impedance return path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Delivers stable VBR with ±0.047 %/°C tempco and low leakage (<1500 μA at VWM) over full temperature range |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 185 °C junction rating | Supports operation in high-temperature environments such as powertrain and transmission control modules |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; suitable for high-volume automated assembly |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role: Unidirectional TVS clamp placed between sensor signal line and ground to limit transient overvoltage. Use Value: Maintains signal integrity by clamping surges to ≤10.5 V while surviving repeated 1500 W pulses per ISO 16750-2. | Use Scenario: Shielding digital input channels of programmable logic controllers from relay coil flyback and ESD events in factory automation cabinets. IC Role / Device Role: Transient suppressor connected across input terminals to shunt surge current away from optocoupler inputs. Use Value: Prevents false triggering and latch-up with 143 A peak surge handling and <1 ns response time. |
| Automotive Body Control Module | Telecom Power Supply Protection |
Use Scenario: Safeguarding microcontroller GPIOs and CAN transceiver bias lines in door module ECUs exposed to battery reverse polarity and jump-start transients. IC Role / Device Role: Bidirectional-capable unidirectional TVS used with external series resistor to manage reverse-polarity stress. Use Value: Leverages 185 °C rating and AEC-Q101 qualification for long-term reliability in non-cooled interior locations. | Use Scenario: Protecting 5 V auxiliary rails in telecom base station power supplies from lightning-induced surges on AC input lines. IC Role / Device Role: Primary clamping device in multi-stage protection scheme upstream of DC-DC converters. Use Value: Provides 1500 W peak power handling with low clamping ratio (VC/VBR = 1.54) to minimize stress on downstream components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Lower PPPM (400 W), SMA package (2.5 mm height), VC = 11.5 V @ 32.4 A | Not AEC-Q101 qualified; limited to consumer/industrial use, not automotive under-hood | Select when cost sensitivity outweighs automotive qualification and surge energy requirements |
| TPC6.8AHM3_A | Same electrical specs and AEC-Q101 qualification; differs only in revision code (A vs. 87A) and tape/reel packaging | No functional difference; identical performance and reliability in circuit | Preferred for new designs requiring latest revision and documented traceability |
Compared with SMAJ6.8A and TPC6.8AHM3_A, the TPC6.8HM3/87A delivers higher surge robustness (1500 W vs. 400 W), lower profile (1.1 mm vs. 2.5 mm), and guaranteed automotive qualification-making it optimal for space-constrained, high-reliability vehicle subsystems where thermal and mechanical constraints are critical.
Availability
TPC6.8HM3/87A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input hardening, and telecom power rail safeguarding requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for TPC6.8HM3/87A 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and MOSFETs for high-reliability applications.
The TPC6.8HM3/87A belongs to Vishay's eSMP® PAR® series of surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression in space-constrained, thermally demanding environments.
FAQ
What is the clamping voltage of the TPC6.8HM3/87A under maximum surge conditions?
The TPC6.8HM3/87A has a maximum clamping voltage (VC) of 10.5 V at its rated peak pulse current (IPPM) of 143 A, measured using a 10/1000 μs waveform. This value ensures protected circuits remain below 12 V absolute maximum ratings, preserving functionality of common 5 V and 3.3 V automotive microcontrollers and interface ICs. The TPC6.8HM3/87A achieves this with low incremental surge resistance inherent to its passivated anisotropic structure.
Is the TPC6.8HM3/87A suitable for automotive under-hood applications?
Yes, the TPC6.8HM3/87A 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 ADAS sensor interfaces. Its SMPC package provides mechanical robustness and thermal performance validated per automotive reliability standards. The TPC6.8HM3/87A also meets MSL Level 1 and is halogen-free and RoHS-compliant.
How does the TPC6.8HM3/87A differ from the TPC6.8AHM3_A variant?
The TPC6.8HM3/87A and TPC6.8AHM3_A share identical electrical specifications, thermal ratings, package dimensions, and AEC-Q101 qualification. The difference lies solely in the revision identifier ("87A" vs. "A") and associated tape-and-reel packaging configuration (e.g., carrier tape width, reel diameter). Both are functionally interchangeable in design; the TPC6.8HM3/87A reflects a later manufacturing revision with updated traceability documentation. The TPC6.8HM3/87A remains fully compatible with existing footprints and layouts.
What is the reverse leakage current of the TPC6.8HM3/87A at room temperature?
At 25 °C and rated stand-off voltage (VWM = 5.8 V), the TPC6.8HM3/87A exhibits a maximum reverse leakage current (IR) of 1500 μA. This value is specified per Vishay's datasheet Document Number 89056 and ensures minimal power loss and signal distortion in always-on sensor bias networks. Leakage remains within specification up to 150 °C, where ID is capped at 10,000 μA-critical for sustained operation in hot automotive environments. The TPC6.8HM3/87A maintains this performance due to its junction passivation process.
Does the TPC6.8HM3/87A require a heatsink for standard operation?
No, the TPC6.8HM3/87A does not require an external heatsink for standard transient suppression duty cycles. Its 1500 W peak pulse power rating applies to non-repetitive events (≤4 pulses/minute), and steady-state thermal dissipation is negligible during normal operation due to ultra-low reverse leakage (<1500 μA at VWM). PCB copper area per JEDEC TO-277A mounting recommendations provides sufficient thermal mass for surge energy absorption. The TPC6.8HM3/87A relies on transient thermal impedance-not continuous power dissipation-for its rating.
TPC6.8HM3/87A 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):
- 5.5V
- 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)
TPC6.8HM3/87A FAQ
1.How can I place an order for TPC6.8HM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8HM3/87A 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 TPC6.8HM3/87A reliable?
The price and inventory of TPC6.8HM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC6.8HM3/87A is usually 5 days.
3.What payment methods are accepted for TPC6.8HM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8HM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8HM3/87A?
TPC6.8HM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8HM3/87A 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 TPC6.8HM3/87A?
For technical support, including TPC6.8HM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8HM3/87A requirements.
6.How does Aetrix verify that TPC6.8HM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC6.8HM3/87A 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 TPC6.8HM3/87A meets industry standards.
7.What is the process for return or replacement of TPC6.8HM3/87A?
All TPC6.8HM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8HM3/87A, 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 TPC6.8HM3/87A part is unused and in its original packaging.
Return procedure for TPC6.8HM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8HM3/87A Tags
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