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Vishay General Semiconductor - Diodes Division TPSMA6.8AHE3/5AT
- Part No.:
- TPSMA6.8AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA6.8AHE3/5AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
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Product details
Overview
TPSMA6.8AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 6.8 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 10.5 V maximum clamping voltage at 38.1 A peak current, 5.8 V stand-off voltage, and 185 °C maximum junction temperature - deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the TPSMA6.8AHE3/5AT datasheet, TPSMA6.8AHE3/5AT pinout, TPSMA6.8AHE3/5AT application, or TPSMA6.8AHE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, 1.0 W steady-state power dissipation, and cathode-band polarity marking for PCB layout verification.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, triggering conduction when reverse voltage exceeds its 6.45–7.14 V breakdown range at 10 mA test current. Its low incremental surge resistance and fast response time ensure effective suppression of 10/1000 μs transients up to 400 W without thermal runaway.
Designed for high-reliability environments, the TPSMA6.8AHE3/5AT supports continuous operation from –65 °C to +185 °C junction temperature, meets JESD201 Class 2 whisker resistance, and uses passivated anisotropic rectifier technology to maintain stable VBR drift (0.047 %/°C) across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V at 10 mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 300 μA, ensuring no false triggering in normal operation |
| VC @ IPPM | 10.5 V at 38.1 A - clamped voltage during 400 W transient, directly limiting stress on downstream ICs or MOSFETs |
| PPPM | 400 W (10/1000 μs) - peak surge handling capacity compatible with IEC 61000-4-5 Level 4 immunity requirements |
| TJ max. | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures without derating |
| Polarity | Unidirectional - protects against positive transients only; requires correct orientation relative to DC bias rail |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and matte tin-plated leads |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: molded plastic body, cathode band marking, and two terminals - anode and cathode - mounted on PCB using 5.0 mm × 5.0 mm copper pads per terminal per JEDEC standard layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| MSL Level 1 (260 °C) | Zero floor life limitation; safe for standard SMT reflow without baking or special handling |
| 0.047 %/°C VBR tempco | Minimal voltage shift over operating range ensures consistent clamping performance in wide-temperature environments |
| Passivated anisotropic rectifier | Reduces surface leakage and improves long-term stability under humidity and bias stress |
| 40 A IFSM (8.3 ms) | Withstands repetitive inrush or fault currents common in motor drive and power supply input stages |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Parallel-connected voltage clamp that diverts surge energy away from sensitive interface ICs during transient events. Use Value: Maintains signal integrity by limiting voltage to ≤10.5 V during 38.1 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V receivers. | Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive below 5.8 V but clamps within nanoseconds when transients exceed VBR. Use Value: Enables robust 24 V DC input stage design with <300 μA leakage at rated voltage and full 400 W surge capability per IEC 61000-4-4. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters and USB PD chargers subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Fast-acting shunt element placed between VOUT and GND to limit transient overshoot before regulation loop responds. Use Value: Achieves sub-100 ns response with 10.5 V clamping, reducing need for oversized output capacitors and improving time-to-failure metrics. | Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers against induced surges on twisted-pair telecom interfaces. IC Role / Device Role / Timing Role: Unidirectional clamp on biased signal lines where negative transients are blocked by DC biasing network. Use Value: Delivers 400 W pulse rating with 1.0 W steady-state dissipation, supporting continuous operation in fanless telecom chassis with ambient up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Same VBR (6.45–7.14 V) and PPPM (600 W), but SMB (DO-214AA) package - 20 % larger footprint and 0.25 mm higher profile | Higher peak power suits higher-energy transients; less suitable for ultra-thin or space-constrained layouts | Select SMBJ6.8A only if board area allows larger footprint and 600 W margin is required beyond 400 W spec |
| 1.5SMC6.8A | Same VBR range and unidirectional polarity, but SMC (DO-214AB) package - 30 % larger than SMA and rated for 1500 W PPPM | Used in primary-side AC input protection where higher surge energy must be absorbed before fuse interruption | Choose 1.5SMC6.8A for front-end mains protection; avoid for secondary-side or signal-line use due to excessive capacitance and size |
Compared with SMBJ6.8A and 1.5SMC6.8A, the TPSMA6.8AHE3/5AT offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 400 W clamping - making it preferred for space-limited automotive and industrial signal-line protection where MSL Level 1 and +185 °C operation are mandatory.
Availability
TPSMA6.8AHE3/5AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA6.8AHE3/5AT 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, precision, and high-temperature performance.
The TPSMA6.8AHE3/5AT belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and telecom systems where AEC-Q101 qualification and 185 °C operation are critical.
FAQ
What is the exact breakdown voltage range for TPSMA6.8AHE3/5AT?
The TPSMA6.8AHE3/5AT has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, with nominal value of 6.80 V. This range is measured per ANSI/IEEE C62.35 standards and confirmed in Vishay's Document Number 88405, Revision 23-Jan-2024. The TPSMA6.8AHE3/5AT maintains this specification across its full operating temperature range.
Is TPSMA6.8AHE3/5AT AEC-Q101 qualified?
Yes, the TPSMA6.8AHE3/5AT is AEC-Q101 qualified. Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, validated per the full stress test plan including HTGB, HTRB, and temperature cycling. This qualification is documented in Vishay's official datasheet (88405) and applies to the exact TPSMA6.8AHE3/5AT ordering variant.
What does the "HE3" suffix mean in TPSMA6.8AHE3/5AT?
The "HE3" suffix in TPSMA6.8AHE3/5AT indicates RoHS-compliant construction with matte tin-plated leads, JESD201 Class 2 whisker resistance, and AEC-Q101 qualification. It also specifies packaging in 7" plastic tape and reel (1800 units per reel), as defined in the Vishay ordering information table. The "5AT" denotes tape-and-reel packaging variant per Vishay's internal coding.
Can TPSMA6.8AHE3/5AT replace older TPSMA6.8A variants without layout changes?
Yes, the TPSMA6.8AHE3/5AT uses the identical SMA (DO-214AC) package with same mechanical dimensions, pad layout, and polarity marking as legacy TPSMA6.8A versions. No PCB modifications are needed for drop-in replacement, provided the design already accounts for unidirectional polarity and 5.8 V stand-off voltage.
What is the maximum clamping voltage of TPSMA6.8AHE3/5AT under surge conditions?
The TPSMA6.8AHE3/5AT has a maximum clamping voltage (VC) of 10.5 V at 38.1 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and ensures downstream components experience no more than 10.5 V during worst-case transient events, as verified in Vishay's electrical characteristics table.
TPSMA6.8AHE3/5AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 38.1A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA6.8AHE3/5AT FAQ
1.How can I place an order for TPSMA6.8AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA6.8AHE3/5AT 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 TPSMA6.8AHE3/5AT reliable?
The price and inventory of TPSMA6.8AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA6.8AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA6.8AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA6.8AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA6.8AHE3/5AT?
TPSMA6.8AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA6.8AHE3/5AT 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 TPSMA6.8AHE3/5AT?
For technical support, including TPSMA6.8AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA6.8AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA6.8AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA6.8AHE3/5AT 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 TPSMA6.8AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA6.8AHE3/5AT?
All TPSMA6.8AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA6.8AHE3/5AT, 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 TPSMA6.8AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA6.8AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA6.8AHE3/5AT Tags
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