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Vishay General Semiconductor - Diodes Division TPSMA6.8HE3_A/I
- Part No.:
- TPSMA6.8HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA6.8HE3_A/I.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,478
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Product details
Overview
TPSMA6.8HE3_A/I 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), 400 W peak pulse power (10/1000 µs), 38.1 V maximum clamping voltage at 38.1 A peak pulse current, 5.8 V stand-off voltage (VWM), and operates up to +185 °C junction temperature - used in automotive sensor line protection and industrial power rail surge suppression.
For engineers reviewing the TPSMA6.8HE3_A/I datasheet, TPSMA6.8HE3_A/I pinout, TPSMA6.8HE3_A/I application, or TPSMA6.8HE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, 10.5 %/°C typical VBR temperature coefficient, and compatibility with reflow profiles peaking at 260 °C.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 185 °C maximum junction temperature rating supports operation in high-temperature automotive engine compartments and industrial motor drive environments.
The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements, with matte tin-plated leads and UL 94 V-0 molding compound - confirming suitability for automated SMT assembly and long-term reliability in harsh thermal cycling applications.
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 during normal operation |
| VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 300 µA, matching 5 V logic and USB power rail systems |
| VC @ IPPM | 38.1 V - clamps 10/1000 µs surges up to 400 W without exceeding safe stress limits for downstream 3.3 V or 5 V ICs |
| PPPM | 400 W - sustains single-pulse transients from inductive switching or ESD events per IEC 61000-4-5 Level 3 |
| TJ max. | +185 °C - enables use in under-hood automotive modules and industrial inverters without derating below ambient 125 °C |
| αT | 0.047 %/°C - low temperature coefficient minimizes VBR drift across wide temperature ranges, critical for precision sensor interfaces |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode indicated by color band. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 5.0 mm × 5.0 mm copper pad layout recommended for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration; enables low VF (3.5 V @ 25 A) during surge conduction |
| Cathode | Current exit point during forward conduction; clamping node during reverse surge | Connected to protected line (e.g., CAN_H, 5 V rail); defines polarity and determines clamping threshold relative to VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity testing - required for ECUs and ADAS sensor modules |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free reflow profiles without preconditioning - eliminates moisture-related popcorning risk |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 1 kV/500 A without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for high-speed interfaces |
| 185 °C junction rating | Supports operation in engine control units and industrial drives where ambient temperatures exceed 105 °C |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ground to clamp negative-going transients and limit positive excursions to ≤38.1 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V microcontrollers interfacing with sensors, enabled by 5.8 V VWM and 6.8 V VBR. | Use Scenario: Suppressing inductive kickback on 12 V/24 V DC power rails feeding motor drivers and solenoid controllers in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from relay coil de-energization and contact arcing events. Use Value: Limits rail voltage spikes to 38.1 V, protecting MOSFET gate drivers and PWM controllers rated for 40 V absolute maximum. |
| USB Port ESD Protection | Telecom Line Surge Suppression |
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) and VBUS against human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed on VBUS line only (not data lines), leveraging 5.8 V VWM to avoid interfering with 5 V USB regulation. Use Value: Clamps 8 kV contact ESD pulses within 1 ns while maintaining <300 µA leakage at 5 V - preserving USB suspend current budgets. | Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on power input and secondary-level on signal lines, coordinated with GDTs and MOVs in multi-stage protection schemes. Use Value: Withstands 400 W surges per IEC 61000-4-5 Ed.3, enabling compliance with GR-1089-CORE telecom immunity requirements. |
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 = 11.5 V @ 33.5 A, non-AEC-Q101 | Higher power handling but no automotive qualification; less suitable for under-hood deployment | Select when higher surge margin is needed and AEC-Q101 is not required |
| 1.5SMC6.8A | DO-214AB (SMC) package, 1500 W PPPM, larger footprint (7.11 mm × 6.22 mm), VC = 11.2 V @ 133 A | Designed for board-level primary protection; incompatible with space-constrained layouts requiring SMA | Choose for front-end AC/DC input protection where PCB area permits larger package |
Compared with SMAJ6.8A and 1.5SMC6.8A, the TPSMA6.8HE3_A/I offers AEC-Q101 qualification and tighter thermal design margin (185 °C TJ) in the compact SMA footprint - making it optimal for automotive and high-density industrial designs where qualification and size are decisive.
Availability
TPSMA6.8HE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor drives, and telecom infrastructure equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMA6.8HE3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA6.8HE3_A/I belongs to Vishay's PAR® (Protection Against Transients) family of transient voltage suppressors, engineered specifically for robust surge immunity in automotive, industrial, and telecommunications applications demanding AEC-Q101 compliance and extended temperature operation.
FAQ
What is the polarity configuration of the TPSMA6.8HE3_A/I?
The TPSMA6.8HE3_A/I is a unidirectional TVS diode, meaning it conducts only in the reverse direction when voltage exceeds its breakdown threshold. The cathode is marked by a color band on the SMA package body. This configuration provides precise clamping on positive transients while blocking normal forward-biased operation - essential for protecting 5 V power rails and sensor outputs where bidirectional clamping is unnecessary.
Is the TPSMA6.8HE3_A/I qualified to AEC-Q101 standards?
Yes, the TPSMA6.8HE3_A/I carries AEC-Q101 qualification, confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for automotive electronic control units, ADAS sensors, and infotainment systems deployed in vehicles.
What is the maximum clamping voltage of the TPSMA6.8HE3_A/I at its rated peak pulse current?
The TPSMA6.8HE3_A/I has a maximum clamping voltage (VC) of 38.1 V at its rated peak pulse current (IPPM) of 38.1 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuits during surge events - ensuring downstream 3.3 V or 5 V ICs remain within safe operating margins even under worst-case transient conditions.
Does the TPSMA6.8HE3_A/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, the TPSMA6.8HE3_A/I is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This allows direct placement into standard lead-free reflow ovens without baking or dry-pack requirements - simplifying manufacturing flow and reducing risk of moisture-induced defects such as popcorn cracking during soldering.
How does the temperature coefficient of VBR affect performance of the TPSMA6.8HE3_A/I in automotive applications?
The TPSMA6.8HE3_A/I exhibits a typical VBR temperature coefficient (αT) of 0.047 %/°C, meaning its breakdown voltage increases slightly with rising junction temperature. At +125 °C ambient (with self-heating), VBR rises ~4.7 % - still well within the 6.45–7.14 V specification range. This stability ensures consistent clamping behavior across the full -65 °C to +185 °C operating range required in automotive under-hood environments.
TPSMA6.8HE3_A/I 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):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 37A
- 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)
TPSMA6.8HE3_A/I FAQ
1.How can I place an order for TPSMA6.8HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA6.8HE3_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 TPSMA6.8HE3_A/I reliable?
The price and inventory of TPSMA6.8HE3_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 TPSMA6.8HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA6.8HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA6.8HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA6.8HE3_A/I?
TPSMA6.8HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA6.8HE3_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 TPSMA6.8HE3_A/I?
For technical support, including TPSMA6.8HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA6.8HE3_A/I requirements.
6.How does Aetrix verify that TPSMA6.8HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA6.8HE3_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 TPSMA6.8HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA6.8HE3_A/I?
All TPSMA6.8HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA6.8HE3_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 TPSMA6.8HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA6.8HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA6.8HE3_A/I Tags
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