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Vishay General Semiconductor - Diodes Division TPSMA6.8AHE3/61T
- Part No.:
- TPSMA6.8AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA6.8AHE3/61T.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,510
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Product details
Overview
TPSMA6.8AHE3/61T 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 nominal breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 38.1 V maximum clamping voltage at 38.1 A peak pulse current, and operates up to +185 °C junction temperature - ideal for automotive sensor line protection.
For engineers reviewing the TPSMA6.8AHE3/61T datasheet, TPSMA6.8AHE3/61T pinout, TPSMA6.8AHE3/61T application, or TPSMA6.8AHE3/61T equivalent, this page delivers verified electrical parameters, thermal limits, AEC-Q101 qualification status, unidirectional polarity confirmation, and real-world use context for ESD/surge protection in high-reliability embedded systems.
Technical Context
The TPSMA6.8AHE3/61T employs passivated anisotropic rectifier technology optimized for stable clamping under repetitive surge conditions. Its 10/1000 μs waveform response supports 400 W peak pulse power with 0.01 % duty cycle, and low incremental surge resistance ensures minimal voltage overshoot during fast transients.
Designed for automotive-grade reliability, the device achieves TJ = 185 °C operation and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). The cathode-band-marked SMA package enables automated optical inspection and provides UL 94 V-0 flammability compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V - defines precise voltage threshold where avalanche conduction begins under 10 mA test current |
| VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 300 μA, ensuring no false triggering in normal operation |
| VC @ IPPM | 38.1 V - clamped voltage at 38.1 A peak pulse current, directly limiting downstream IC stress during surge events |
| PPPM | 400 W - peak pulse power handling capability using standard 10/1000 μs waveform, validated on 5.0 mm × 5.0 mm copper pads |
| TJ max. | +185 °C - enables deployment in under-hood automotive environments without derating penalties up to rated ambient |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with protected line |
| AEC-Q101 | Qualified - certified for automotive applications per stress test requirements including HTRB, HTGB, and temperature cycling |
Pinout & Package
SMA (DO-214AC) surface-mount package with matte tin-plated leads, 0.208" × 0.157" body dimensions, cathode band marking, and UL 94 V-0 molding compound. Compliant with J-STD-002 solderability and JESD 22-B102 whisker testing (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path during transient |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift < ±5 % over 1000 hrs at 150 °C |
| Clamping performance | Low dynamic impedance yields 38.1 V clamping at 38.1 A, limiting energy delivered to downstream MOSFETs or sensors |
| Thermal robustness | 185 °C max junction rating allows direct placement near heat sources without external derating |
| Automotive qualification | AEC-Q101 qualification confirms suitability for engine control, ADAS camera, and infotainment power rails |
| Mounting reliability | MSL Level 1 rating permits single-pass reflow at 260 °C peak without popcorn or delamination risk |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤38.1 V, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs while maintaining signal integrity below 5.8 V normal operation. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary surge suppression device across input terminals prior to optocoupler or Schmitt-trigger conditioning stage. Use Value: Absorbs 400 W pulses without degradation, enabling reliable operation in factory-floor environments with frequent inductive switching noise. |
| Consumer Power Adapter Protection | Telecom DC Power Rail Clamping |
Use Scenario: Secondary-side overvoltage protection in USB-C PD adapters and AC/DC wall adapters exposed to lightning-induced surges on low-voltage DC outputs. IC Role / Device Role / Timing Role: Fast-response clamping diode placed across +5 V / +9 V / +15 V output rails before connector pins. Use Value: Sub-nanosecond response time prevents >38.1 V excursion during 10/1000 μs transients, preserving USB-PD controller and port controller ICs. | Use Scenario: DC feed protection in 48 V telecom power distribution units (PDUs) and remote radio head (RRH) power inputs subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS on each DC input line referenced to chassis ground in redundant power architectures. Use Value: Withstands 40 A IFSM and maintains VWM = 5.8 V stability across -65 °C to +185 °C, supporting outdoor base station deployments. |
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 SMA package, 600 W PPPM, higher VC = 11.2 V at 33.5 A, non-AEC-Q101 | Higher power rating but less stringent automotive qualification; suitable for industrial-only designs | Select SMAJ6.8A when 600 W surge margin is required and AEC-Q101 is not mandated |
| 1.5SMC6.8A | Larger SMC (DO-214AB) package, 1500 W PPPM, VC = 11.2 V at 133 A, same VBR range | Requires larger PCB footprint and different thermal pad layout; better for high-energy surge zones | Choose 1.5SMC6.8A for primary-level AC/DC front-end protection where space permits and energy levels exceed 400 W |
Compared with SMAJ6.8A and 1.5SMC6.8A, the TPSMA6.8AHE3/61T offers tighter VBR tolerance (±5 % vs. ±10 %), AEC-Q101 qualification, and optimized thermal resistance in the compact SMA footprint - making it preferred for space-constrained automotive and industrial edge nodes requiring long-term reliability validation.
Availability
TPSMA6.8AHE3/61T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and consumer power adapter protection requiring stable component supply, AEC-Q101 traceability, and consistent 6.8 V clamping behavior across production lots.
Supply support for TPSMA6.8AHE3/61T 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 TVS devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMA6.8AHE3/61T belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-temperature, high-surge environments in automotive and industrial control systems where failure modes must be rigorously controlled.
FAQ
What is the exact breakdown voltage range of the TPSMA6.8AHE3/61T?
The TPSMA6.8AHE3/61T has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, with a nominal value of 6.80 V. This tight ±5 % tolerance ensures predictable clamping onset across temperature and production lots, critical for protecting 5 V logic interfaces without premature conduction.
Is the TPSMA6.8AHE3/61T qualified for automotive applications?
Yes, the TPSMA6.8AHE3/61T is AEC-Q101 qualified, as confirmed by Vishay's documentation for HE3-suffix variants. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - validating its use in engine control units, ADAS sensors, and body electronics.
What is the maximum clamping voltage of the TPSMA6.8AHE3/61T during a surge event?
The TPSMA6.8AHE3/61T exhibits a maximum clamping voltage (VC) of 38.1 V at its rated peak pulse current of 38.1 A (10/1000 μs waveform). This value is measured under standardized test conditions with 5.0 mm × 5.0 mm copper pads, defining the upper voltage limit imposed on protected circuitry during transient events.
Does the TPSMA6.8AHE3/61T support bidirectional transient suppression?
No, the TPSMA6.8AHE3/61T is unidirectional only, as explicitly stated in the Vishay datasheet. It clamps positive transients relative to the cathode; for AC or bipolar surge protection, a separate bidirectional variant (e.g., TPSMA6.8CA) or back-to-back configuration is required.
What is the thermal operating limit of the TPSMA6.8AHE3/61T?
The TPSMA6.8AHE3/61T supports a maximum junction temperature (TJ) of +185 °C, enabling operation in high-ambient environments such as under-hood automotive locations or enclosed industrial enclosures. Its thermal design allows full-rated power dissipation without derating up to this temperature.
TPSMA6.8AHE3/61T 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)
TPSMA6.8AHE3/61T FAQ
1.How can I place an order for TPSMA6.8AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA6.8AHE3/61T 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 TPSMA6.8AHE3/61T reliable?
The price and inventory of TPSMA6.8AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA6.8AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA6.8AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA6.8AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA6.8AHE3/61T?
TPSMA6.8AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA6.8AHE3/61T 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 TPSMA6.8AHE3/61T?
For technical support, including TPSMA6.8AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA6.8AHE3/61T requirements.
6.How does Aetrix verify that TPSMA6.8AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA6.8AHE3/61T 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 TPSMA6.8AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA6.8AHE3/61T?
All TPSMA6.8AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA6.8AHE3/61T, 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 TPSMA6.8AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA6.8AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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