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Vishay General Semiconductor - Diodes Division TPSMA6.8AHE3_B/H
- Part No.:
- TPSMA6.8AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA6.8AHE3_B/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,520
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Product details
Overview
TPSMA6.8AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - designed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the TPSMA6.8AHE3_B/H datasheet, TPSMA6.8AHE3_B/H pinout, TPSMA6.8AHE3_B/H application, or TPSMA6.8AHE3_B/H equivalent, key selection criteria include clamping voltage (VC = 10.5 V at IPPM), unidirectional polarity, AEC-Q101 qualification status, thermal derating above 25 °C, and compatibility with standard SMA PCB pad layouts per J-STD-020 MSL level 1.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It operates as a clamping device during transients, with fast response time and defined clamping behavior under 10/1000 µs surge waveforms.
Its unidirectional configuration enables protection of DC-biased circuits such as power rails and sensor interfaces. The device is qualified to AEC-Q101 and rated for TJ up to +185 °C, supporting use in under-hood automotive modules and industrial motor drives where thermal margin is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V at 10 mA - defines precise voltage threshold for avalanche conduction onset |
| VWM | 5.80 V - maximum continuous reverse working voltage before leakage exceeds 300 µA |
| VC @ IPPM | 10.5 V at 38.1 A - clamping voltage limiting protected circuit stress during 400 W transient |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity under standardized lightning/inductive-switching test |
| TJ max. | +185 °C - enables operation in high-ambient environments without derating loss in automotive engine control units |
| Polarity | Unidirectional - suitable only for DC-biased lines; cathode band denotes terminal orientation |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.2" × 0.2" copper pad requirement for thermal performance |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, matte tin-plated leads, and cathode band marking. Compliant with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during reverse surge |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 5 V rail); color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR drift < ±5 % over lifetime at 150 °C |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without preconditioning - supports standard SMT assembly |
| Low clamping ratio | VC/VBR ≈ 1.54 - minimizes overvoltage stress on downstream ICs during ESD or load dump events |
| Fast response time | < 1 ns - triggers before most microsecond-scale transients damage sensitive CMOS inputs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 5 V supply rail in engine control unit against ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Clamping TVS diode placed between rail and ground, activated within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage to ≤10.5 V during 400 W surges, preventing latch-up or gate oxide failure in MCU and CAN transceivers. | Use Scenario: Safeguarding analog output of pressure sensor in factory automation PLC module from ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional shunt protector on 0–5 V analog line, referenced to system ground. Use Value: Maintains signal integrity by clamping transients below ADC input damage threshold while adding < 0.5 pF capacitance at 1 MHz. |
| Consumer Device USB Port Protection | Telecom Base Station DC Bias Protection |
Use Scenario: Secondary-level surge suppression on VBUS line of USB 2.0 interface in smart home gateway. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and upstream of USB controller's internal ESD diodes. Use Value: Absorbs 30 kV contact ESD per IEC 61000-4-2 without degradation, preserving data-line impedance and signal rise time. | Use Scenario: DC feed line protection in remote radio head (RRH) power distribution board exposed to lightning-induced surges. IC Role / Device Role / Timing Role: High-energy clamping device on +24 V bias rail supplying RF amplifiers and bias tees. Use Value: Withstands repetitive 10/1000 µs surges up to 400 W at 0.01 % duty cycle, ensuring uptime in outdoor telecom infrastructure. |
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 | Same VBR range but SMB (DO-214AA) package; 600 W PPPM; higher thermal mass | Requires larger PCB footprint; better suited for higher-duty-cycle surges | Select when surge repetition rate exceeds 0.01 % or board space allows larger case |
| 1.5SMC6.8A | Same VBR but SMC (DO-214AB) package; 1500 W PPPM; higher IPPM (139 A) | Designed for heavy industrial mains input stages; not AEC-Q101 qualified | Choose for non-automotive AC/DC front-end protection where qualification is not required |
Compared with SMBJ6.8A and 1.5SMC6.8A, the TPSMA6.8AHE3_B/H offers tighter VBR tolerance (±5 %), AEC-Q101 qualification, and optimized thermal performance in the smaller SMA footprint - making it preferred for space-constrained automotive and industrial signal-line protection where reliability certification is mandatory.
Availability
TPSMA6.8AHE3_B/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and consumer USB power rail protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMA6.8AHE3_B/H 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 reliability, thermal performance, and automotive-grade qualification.
The TPSMA6.8AHE3_B/H belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial power systems where AEC-Q101 compliance and 185 °C operation are essential.
FAQ
What is the clamping voltage of the TPSMA6.8AHE3_B/H under a 400 W transient?
The TPSMA6.8AHE3_B/H has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 38.1 A - corresponding to a 400 W surge with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and ensures downstream components see limited overvoltage stress during standardized transients.
Is the TPSMA6.8AHE3_B/H AEC-Q101 qualified?
Yes, the TPSMA6.8AHE3_B/H is AEC-Q101 qualified. Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, validated for automotive applications including engine control, body electronics, and ADAS subsystems per the Vishay qualification report referenced in document 88405.
What does the "B/H" suffix mean in TPSMA6.8AHE3_B/H?
The "B/H" suffix in TPSMA6.8AHE3_B/H indicates revision code "B" and packaging in 7-inch diameter plastic tape and reel (package code H) with a base quantity of 1800 units. This matches Vishay's ordering convention documented in the "Ordering Information" section of datasheet 88405.
Can the TPSMA6.8AHE3_B/H be used in bidirectional configurations?
No, the TPSMA6.8AHE3_B/H is unidirectional only. Its electrical characteristics, including breakdown and clamping behavior, are specified for reverse-biased operation only. For bidirectional protection, Vishay offers separate part numbers such as TPSMA6.8CA, which is not interchangeable with TPSMA6.8AHE3_B/H.
What is the maximum operating temperature for the TPSMA6.8AHE3_B/H?
The TPSMA6.8AHE3_B/H has a maximum junction temperature (TJ) of +185 °C, enabling reliable operation in high-ambient environments such as under-hood automotive modules or industrial motor drive enclosures. Derating curves in Figure 2 of datasheet 88405 define allowable power reduction above 25 °C ambient.
TPSMA6.8AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 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_B/H FAQ
1.How can I place an order for TPSMA6.8AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA6.8AHE3_B/H 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_B/H reliable?
The price and inventory of TPSMA6.8AHE3_B/H 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_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA6.8AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA6.8AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA6.8AHE3_B/H?
TPSMA6.8AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA6.8AHE3_B/H 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_B/H?
For technical support, including TPSMA6.8AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA6.8AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA6.8AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA6.8AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA6.8AHE3_B/H?
All TPSMA6.8AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA6.8AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for TPSMA6.8AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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