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Vishay General Semiconductor - Diodes Division TPSMA6.8AHE3_B/I
- Part No.:
- TPSMA6.8AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA6.8AHE3_B/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,547
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Product details
Overview
TPSMA6.8AHE3_B/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 breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 10.5 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_B/I datasheet, TPSMA6.8AHE3_B/I pinout, TPSMA6.8AHE3_B/I application, or TPSMA6.8AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 5.8 V stand-off voltage, low incremental surge resistance, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for junction stability under repetitive surge stress. Its 10/1000 µs waveform rating and 0.01 % duty cycle support robust protection against inductive switching spikes and lightning-induced surges in automotive ECUs and industrial I/O modules.
The device exhibits a positive temperature coefficient of VBR (+0.047 %/°C), enabling predictable voltage drift over temperature. With 3.5 V max forward voltage at 25 A and MSL Level 1 moisture sensitivity, it supports reflow soldering at 260 °C peak without preconditioning.
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 for overvoltage detection |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 300 µA |
| VC @ IPPM | 10.5 V at 38.1 A - clamped voltage during 400 W transient, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity per single event |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects only against positive transients relative to cathode, requiring correct orientation |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.28 mm length, compatible with automated placement |
Pinout & Package
SMA (DO-214AC) 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 |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 185 °C junction rating | Eliminates thermal derating in engine control units and ADAS sensor housings |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation |
| Low clamping ratio (VC/VBR = 1.54) | Minimizes overvoltage margin between clamping and IC absolute maximum ratings |
| MSL Level 1 | Enables direct placement into standard reflow profiles without baking or dry pack |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input pins. Use Value: Maintains VC ≤ 10.5 V during 38.1 A surges, ensuring downstream ASICs remain within 12 V absolute max rating. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS on each channel input, absorbing repetitive 400 W pulses without parameter shift. Use Value: Enables >100,000 surge cycles at rated conditions due to stable junction passivation and 185 °C thermal capability. |
| Consumer Power Adapter ESD Clamp | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression on USB-C PD adapter output rails exposed to user-handling ESD and cable coupling events. IC Role / Device Role / Timing Role: Fast-response TVS across VBUS and GND to limit ESD-induced overshoot during hot-plug events. Use Value: Sub-1 ns response time and 300 µA leakage at 5.8 V preserve efficiency while meeting IEC 61000-4-2 Level 4. |
Use Scenario: Overvoltage protection on Ethernet PHY interface lines (e.g., MDI-X) subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pairs referenced to local ground plane. Use Value: 10.5 V clamping ensures PHY receiver inputs stay below 12.5 V abs max, preventing latch-up or oxide damage. |
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 (6.8 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (64.5 A) | Larger footprint (4.58 mm × 3.94 mm vs. 5.28 mm × 3.99 mm); better suited for higher-energy surges | Select when board space allows larger package and surge energy exceeds 400 W |
| 1.5SMC6.8A | Same VBR, but SMC package (DO-214AB); 1500 W PPPM, 216 A IPPM | Substantially larger (7.11 mm × 6.22 mm); requires different pad layout and thermal relief | Choose for primary-side AC/DC input protection where energy levels exceed secondary-side requirements |
Compared with SMBJ6.8A and 1.5SMC6.8A, the TPSMA6.8AHE3_B/I delivers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W capability-making it preferred for space-constrained automotive and industrial PCBs where MSL Level 1 and +185 °C operation are mandatory.
Availability
TPSMA6.8AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA6.8AHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade performance.
The TPSMA6.8AHE3_B/I belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for robust electrostatic and surge protection in harsh-environment electronics where long-term parametric stability is critical.
FAQ
What is the exact breakdown voltage tolerance for TPSMA6.8AHE3_B/I?
The TPSMA6.8AHE3_B/I has a specified breakdown voltage range of 6.45 V (min) to 7.14 V (max) at 10 mA test current, with 6.80 V nominal. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports reliable design margining against downstream IC absolute maximum ratings.
Is TPSMA6.8AHE3_B/I RoHS-compliant and halogen-free?
TPSMA6.8AHE3_B/I carries the HE3 suffix, confirming it is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's material categorization standard. However, it is not halogen-free; for halogen-free compliance, the HM3-suffixed variant (e.g., TPSMA6.8AHM3_B/I) must be selected.
Does TPSMA6.8AHE3_B/I require derating above 25 °C ambient?
Yes-peak pulse power must be linearly derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, TPSMA6.8AHE3_B/I retains approximately 75 % of its 400 W rating (300 W), and at 125 °C, ~55 % (220 W), based on junction temperature limits and thermal resistance of the SMA package on standard PCB pads.
Can TPSMA6.8AHE3_B/I be used in bidirectional configurations?
No-TPSMA6.8AHE3_B/I is unidirectional only, with cathode band marking. For bidirectional transient suppression, a pair of TPSMA6.8AHE3_B/I devices in series opposition or a dedicated bidirectional TVS (e.g., TPSMA6.8CA) must be used; mixing polarities risks catastrophic failure.
What is the maximum reverse leakage current for TPSMA6.8AHE3_B/I at 150 °C?
At VWM = 5.8 V and TJ = 150 °C, the maximum reverse leakage current for TPSMA6.8AHE3_B/I is 1000 µA. This elevated leakage is fully characterized and accounted for in thermal design-no additional derating is required beyond the published pulse power curves.
TPSMA6.8AHE3_B/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:
- 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/I FAQ
1.How can I place an order for TPSMA6.8AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA6.8AHE3_B/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 TPSMA6.8AHE3_B/I reliable?
The price and inventory of TPSMA6.8AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA6.8AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA6.8AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA6.8AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA6.8AHE3_B/I?
TPSMA6.8AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA6.8AHE3_B/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 TPSMA6.8AHE3_B/I?
For technical support, including TPSMA6.8AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA6.8AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA6.8AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA6.8AHE3_B/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 TPSMA6.8AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA6.8AHE3_B/I?
All TPSMA6.8AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA6.8AHE3_B/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 TPSMA6.8AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA6.8AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA6.8AHE3_B/I Tags
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