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Vishay General Semiconductor - Diodes Division TPSMC6.8A81HE3_A/I
- Part No.:
- TPSMC6.8A81HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC6.8A81HE3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,506
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Product details
Overview
TPSMC6.8A81HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for clamping voltage transients on power and signal lines. It features 6.45 V to 7.14 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 143 A peak pulse current (IPPM), and 10.5 V maximum clamping voltage (VC) - used to protect MOSFETs and ICs in automotive power supplies.
For engineers reviewing the TPSMC6.8A81HE3_A/I datasheet, TPSMC6.8A81HE3_A/I pinout, TPSMC6.8A81HE3_A/I application, or TPSMC6.8A81HE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low clamping ratio (VC/VBR ≈ 1.55), and MSL Level 1 reflow compatibility.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under high-temperature stress. Its unidirectional architecture enables forward conduction during overvoltage events while maintaining low leakage (<1000 µA at VWM) at 25 °C and <10000 µA at 150 °C.
The device delivers 1500 W peak pulse power per 10/1000 µs waveform with 10.5 V clamping at 143 A, achieving low incremental surge resistance and fast response time. It is rated for -65 °C to +185 °C operating junction temperature and meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45 V min / 7.14 V max at 10 mA - defines precise voltage threshold for avalanche conduction onset |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before significant leakage begins |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure in automotive load-dump scenarios |
| Clamping Voltage VC | 10.5 V at 143 A - limits downstream voltage stress to safe levels for 5 V–12 V logic and power stages |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood automotive placement and industrial high-temp environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT |
| Package | DO-214AB (SMC) - industry-standard SMT outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation |
Pinout & Package
DO-214AB (SMC) package with cathode indicated by color band; two-terminal device requiring no orientation-specific PCB layout beyond cathode alignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during clamping | Connected to protected line (e.g., 12 V rail); conducts when reverse voltage exceeds VBR |
| Cathode | Reverse-biased terminal during normal operation | Marked by band; tied to ground or lower-potential reference to enable avalanche clamping action |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature reliability | TJ max = 185 °C enables use in engine control units and powertrain modules without derating |
| AEC-Q101 qualification | Validated for automotive-grade deployment including temperature cycling, humidity bias, and mechanical shock |
| Low clamping ratio | VC/VBR ≈ 1.55 ensures minimal overvoltage margin above breakdown, protecting sensitive gate oxides |
| MSL Level 1 compliance | Supports single-reflow assembly at 260 °C peak without moisture-induced damage |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD22-B102, eliminating lead-free solder joint reliability concerns |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 pulse 1 (inductive switch-off) and pulse 3a/b (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients within 1 ns response window. Use Value: Limits voltage to ≤10.5 V during 143 A surges, preventing latch-up or gate oxide rupture in MCU and CAN transceivers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to shunt fast transients before reaching ADC input stage. Use Value: Maintains signal integrity with <1000 µA leakage at 5.8 V, avoiding DC offset errors in precision measurement circuits. |
| Telecom DC Power Input Protection | Computer PSU Overvoltage Suppression |
|
Use Scenario: Safeguarding 48 V telecom rectifier outputs against lightning-induced surges on outdoor plant equipment. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC bus, coordinated with upstream MOVs for staged energy absorption. Use Value: Withstands 1500 W pulses and operates up to 185 °C ambient, ensuring uptime in uncooled outdoor cabinets. |
Use Scenario: Secondary-side clamping on ATX 12 V and 5 V rails to prevent catastrophic failure during VRM fault conditions. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to CPU/GPU VRMs to limit overshoot during phase loss or control loop instability. Use Value: Clamps to 10.5 V before MOSFET drain-source breakdown occurs, preserving power stage reliability across thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Same DO-214AC (SMA) package; lower PPPM (400 W), higher VC (11.5 V), lower IPPM (32.4 A) | Limited to low-energy consumer electronics; insufficient for automotive load-dump immunity | Select only for cost-sensitive non-automotive designs where 1500 W surge handling is unnecessary |
| TPSMC6.8CA | Bidirectional variant; identical VBR, VWM, and PPPM but symmetric clamping (±10.5 V) | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, USB D+/D-) | Choose only when bidirectional protection is mandated; unidirectional TPSMC6.8A81HE3_A/I offers lower leakage and better DC rail efficiency |
Compared with SMAJ6.8A and TPSMC6.8CA, the TPSMC6.8A81HE3_A/I provides superior surge robustness for automotive 12 V systems while maintaining lower leakage than bidirectional alternatives-making it optimal for unidirectional DC power rail protection where AEC-Q101 compliance and thermal resilience are mandatory.
Availability
TPSMC6.8A81HE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for TPSMC6.8A81HE3_A/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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The TPSMC6.8A81HE3_A/I belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for high-temperature stability and AEC-Q101-compliant automotive electronics protection.
FAQ
What is the breakdown voltage tolerance for TPSMC6.8A81HE3_A/I?
The TPSMC6.8A81HE3_A/I has a specified breakdown voltage range of 6.45 V minimum to 7.14 V maximum at 10 mA test current, corresponding to ±5 % tolerance around the nominal 6.8 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical automotive applications.
Is TPSMC6.8A81HE3_A/I RoHS-compliant and halogen-free?
Yes, the TPSMC6.8A81HE3_A/I carries the HE3 suffix, indicating full RoHS compliance and AEC-Q101 qualification. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin plated - satisfying J-STD-002 solderability and JESD22-B102 intermetallic growth requirements without halogenated flame retardants.
What is the maximum clamping voltage of TPSMC6.8A81HE3_A/I at its rated peak pulse current?
The TPSMC6.8A81HE3_A/I exhibits a maximum clamping voltage (VC) of 10.5 V at its rated peak pulse current (IPPM) of 143 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream 12 V-rated components such as microcontrollers and gate drivers.
Does TPSMC6.8A81HE3_A/I require derating at elevated ambient temperatures?
Yes, the TPSMC6.8A81HE3_A/I must be derated above 25 °C ambient per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power capability drops to approximately 50 % of the 1500 W rating, and at 150 °C, it falls to ~35 %. Designers must apply these derating curves when placing the device near heat sources like power inductors or MOSFETs.
How is polarity identified on the TPSMC6.8A81HE3_A/I package?
The TPSMC6.8A81HE3_A/I uses a cathode band marking on the DO-214AB (SMC) body to indicate polarity. The banded end is the cathode terminal and must be connected to the reference ground or lower-potential node in the circuit. This unidirectional configuration ensures proper avalanche conduction during positive transients on the anode side.
TPSMC6.8A81HE3_A/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:
- 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:
- DO-214AB (SMC)
TPSMC6.8A81HE3_A/I FAQ
1.How can I place an order for TPSMC6.8A81HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC6.8A81HE3_A/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_A/I reliable?
The price and inventory of TPSMC6.8A81HE3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC6.8A81HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC6.8A81HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC6.8A81HE3_A/I?
TPSMC6.8A81HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC6.8A81HE3_A/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_A/I?
For technical support, including TPSMC6.8A81HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC6.8A81HE3_A/I requirements.
6.How does Aetrix verify that TPSMC6.8A81HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC6.8A81HE3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC6.8A81HE3_A/I?
All TPSMC6.8A81HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC6.8A81HE3_A/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_A/I part is unused and in its original packaging.
Return procedure for TPSMC6.8A81HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC6.8A81HE3_A/I Tags
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Diodes Incorporated
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Diodes Incorporated
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