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Vishay General Semiconductor - Diodes Division TPSMC6.8A81HE3_B/I
- Part No.:
- TPSMC6.8A81HE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC6.8A81HE3_B/I.pdf
- Description:
- TVS DIODE SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,109
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Product details
Overview
TPSMC6.8A81HE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 10.5 V clamping voltage at 143 A, and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMC6.8A81HE3_B/I datasheet, TPSMC6.8A81HE3_B/I pinout, TPSMC6.8A81HE3_B/I application, or TPSMC6.8A81HE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 10/1000 µs waveform capability, and compatibility with high-reliability automotive PCB layouts requiring RoHS-compliant, matte tin-plated leads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for junction stability under thermal stress. Its 185 °C maximum junction temperature supports operation in under-hood automotive environments and industrial motor drive control units where ambient temperatures exceed 125 °C.
The device delivers 143 A peak pulse current (IPPM) at 10.5 V clamping voltage under 10/1000 µs waveform, with low incremental surge resistance ensuring minimal voltage overshoot during ESD or load-switching events. It meets JESD201 Class 2 whisker testing and is qualified per 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 reliable triggering above 5.8 V system operating voltage while avoiding false trips |
| VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 1000 µA at 25 °C |
| VC @ IPPM | 10.5 V - clamped voltage seen by protected IC/MOSFET during 143 A transient, limiting stress on downstream components |
| PPPM | 1500 W - peak power handling for 10/1000 µs surge, enabling robust protection against ISO 7637-2 Pulse 1/2a/5a |
| TJ max. | +185 °C - enables use in high-temperature zones such as engine control modules without derating |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to DC rail polarity |
| MSL Level | Level 1 (260 °C peak reflow) - supports standard lead-free SMT assembly without moisture sensitivity concerns |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case meeting UL 94 V-0. Cathode indicated by color band. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / low-side connection | Connected to ground or lower-potential rail; completes clamping path during overvoltage event |
| Cathode | Protected line input / high-side connection | Connected to line being protected (e.g., 5 V rail); conducts when VIN > VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term stability under thermal cycling and humidity exposure |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| 1500 W peak pulse power | Withstands repetitive load-dump and inductive switching surges common in 12 V vehicle electrical systems |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes overvoltage margin required for protected ICs, allowing tighter voltage tolerance designs |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without baking or special handling |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in engine bay modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients on VCC and signal lines, preventing latch-up or gate oxide damage in connected ICs. Use Value: 185 °C TJ rating and AEC-Q101 qualification ensure functional safety compliance in ASIL-B systems without thermal derating. | Use Scenario: Safeguarding 24 V DC input rails of PLC I/O modules and motor drive controllers against inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Acts as primary overvoltage clamp ahead of DC-DC converters and microcontrollers, absorbing energy before it reaches sensitive regulation circuitry. Use Value: 1500 W peak power and 10.5 V clamping enable protection of 3.3 V/5 V logic supplies even during 100 V/10 ms surges. |
| Consumer USB Power Port | Telecom Line Interface |
Use Scenario: Securing 5 V USB Type-C power delivery paths in smart home hubs and docking stations against hot-plug transients and ESD. IC Role / Device Role / Timing Role: Placed between connector and USB PD controller to limit voltage excursion during insertion events and contact bounce. Use Value: Low 1000 µA leakage at 5.8 V ensures minimal standby current drain while maintaining fast response (<1 ps) to sub-nanosecond ESD pulses. | Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from lightning-induced surges and AC power cross-talk in base station backhaul equipment. IC Role / Device Role / Timing Role: Mounted at board edge to divert common-mode surges before entering transformer-coupled isolation stage. Use Value: SMC package allows high-current routing with minimal trace inductance, preserving clamping effectiveness up to 143 A peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Lower PPPM (600 W), same VBR/VWM, SMB (DO-214AA) package - 30 % smaller footprint, 40 % lower surge capacity | Suitable for space-constrained consumer ports but insufficient for automotive load dump per ISO 7637-2 | Select when board area is critical and surge energy is limited to <600 W |
| TPSMC6.8CA | Bi-directional variant with identical VBR, same package and power rating, but symmetric clamping for AC-coupled or floating lines | Required for differential signal lines (e.g., RS-485, CAN FD) where polarity reversal may occur | Select when protecting bidirectional or AC-signaled paths where reverse conduction must be suppressed |
Compared with SMBJ6.8A and TPSMC6.8CA, the TPSMC6.8A81HE3_B/I offers higher surge robustness in the same SMC form factor and unidirectional optimization for DC rail protection - making it preferred for automotive power domains and industrial 24 V inputs where peak energy exceeds 600 W and polarity is fixed.
Availability
TPSMC6.8A81HE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC power inputs, and telecom line interface circuits requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for TPSMC6.8A81HE3_B/I 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, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing applications.
The TPSMC6.8A81HE3_B/I belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment electronics where thermal stability and surge repeatability are critical.
FAQ
What is the breakdown voltage tolerance of the TPSMC6.8A81HE3_B/I?
The TPSMC6.8A81HE3_B/I has a specified breakdown voltage range of 6.45 V (min) to 7.14 V (max) at 10 mA test current, with a nominal value of 6.80 V. This ±5 % tolerance ensures consistent triggering behavior across production lots while accommodating thermal drift via its 0.047 %/°C temperature coefficient. The device maintains this specification under AEC-Q101 stress conditions.
Is the TPSMC6.8A81HE3_B/I RoHS-compliant and halogen-free?
Yes, the TPSMC6.8A81HE3_B/I carries the HE3 suffix, indicating RoHS-compliance per EU Directive 2011/65/EU and material compliance per Vishay document 99912. It is not halogen-free; for halogen-free versions, the HM3 suffix (e.g., TPSMC6.8AHM3_B/I) must be selected. Both HE3 and HM3 meet JESD201 Class 2 whisker resistance requirements.
What is the maximum clamping voltage of the TPSMC6.8A81HE3_B/I under surge conditions?
The TPSMC6.8A81HE3_B/I exhibits a maximum clamping voltage (VC) of 10.5 V at its rated peak pulse current of 143 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream IC overvoltage margin calculations in designs such as automotive ECUs and industrial power supplies.
Does the TPSMC6.8A81HE3_B/I require derating at elevated ambient temperatures?
Yes, the TPSMC6.8A81HE3_B/I must be derated above 25 °C ambient per Figure 2 in Vishay document 88407. At 125 °C ambient, its peak pulse power drops to approximately 750 W (50 % of 1500 W), and at 150 °C, it falls to ~500 W. Derating ensures safe operation within the 185 °C maximum junction temperature limit and preserves clamping performance during sustained thermal stress.
How is the TPSMC6.8A81HE3_B/I packaged for automated assembly?
The TPSMC6.8A81HE3_B/I is supplied in 13-inch diameter plastic tape and reel packaging (I-type carrier), with 3500 units per reel. The SMC (DO-214AB) package features matte tin-plated leads compatible with J-STD-002 solderability standards and supports standard reflow profiles up to 260 °C peak (MSL Level 1), enabling seamless integration into high-throughput SMT lines without pre-baking.
TPSMC6.8A81HE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- DO-214AB (SMC)
TPSMC6.8A81HE3_B/I FAQ
1.How can I place an order for TPSMC6.8A81HE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC6.8A81HE3_B/I 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 TPSMC6.8A81HE3_B/I reliable?
The price and inventory of TPSMC6.8A81HE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC6.8A81HE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC6.8A81HE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC6.8A81HE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC6.8A81HE3_B/I?
TPSMC6.8A81HE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC6.8A81HE3_B/I 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 TPSMC6.8A81HE3_B/I?
For technical support, including TPSMC6.8A81HE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC6.8A81HE3_B/I requirements.
6.How does Aetrix verify that TPSMC6.8A81HE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC6.8A81HE3_B/I 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 TPSMC6.8A81HE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC6.8A81HE3_B/I?
All TPSMC6.8A81HE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC6.8A81HE3_B/I, 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 TPSMC6.8A81HE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC6.8A81HE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC6.8A81HE3_B/I Tags
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Diodes Incorporated
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