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Vishay General Semiconductor - Diodes Division TPSMB6.8AHE3_A/I
- Part No.:
- TPSMB6.8AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB6.8AHE3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,846
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Product details
Overview
TPSMB6.8AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 5.8 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.5 V maximum clamping voltage at 57.1 A, and operates up to +185 °C junction temperature - ideal for automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB6.8AHE3_A/I datasheet, TPSMB6.8AHE3_A/I pinout, TPSMB6.8AHE3_A/I application, or TPSMB6.8AHE3_A/I equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package dimensions, cathode/anode terminal mapping, AEC-Q101 qualification status, and direct alternative part comparisons with documented clamping and thermal differences.
Technical Context
The TPSMB6.8AHE3_A/I uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and fast-rising transients. Its unidirectional polarity and 10.5 V clamping voltage at 57.1 A ensure robust overvoltage protection without forward conduction during normal operation.
Rated for TJ = –65 °C to +185 °C and qualified to AEC-Q101, the device supports high-reliability automotive applications where thermal stability and long-term surge endurance are critical. The 600 W peak pulse power rating is specified under JEDEC-standard 10/1000 µs waveform with 0.01% duty cycle, derated linearly above 25 °C ambient.
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 at which clamping initiates under controlled test conditions |
| VWM | 5.8 V - maximum continuous reverse working voltage before leakage exceeds 500 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage during worst-case 600 W transient; determines protected circuit's maximum stress level |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capacity; defines survivability against common automotive load-dump and ISO 7637-2 pulses |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures without thermal derating loss |
| Polarity | Unidirectional - blocks reverse current only; requires correct orientation relative to DC rail polarity for functional protection |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow |
Pinout & Package
TPSMB6.8AHE3_A/I is housed in an SMB (DO-214AA) plastic package with matte tin-plated leads. Cathode is marked by a color band on the body. The device has two terminals: anode and cathode - no internal connections or multi-pin functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces surface leakage and improves long-term reliability under humid or contaminated PCB environments |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade production use including temperature cycling, HTRB, and surge lifetime testing per JESD47 |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination risk |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes overvoltage overshoot during transients - critical for protecting 5 V or 3.3 V logic interfaces downstream |
| 185 °C junction rating | Supports placement near heat-generating components (e.g., power MOSFETs, DC-DC inductors) without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients above 10.5 V. Use Value: Limits peak rail voltage to ≤10.5 V during 600 W surges, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair (e.g., CAN or LIN bus lines) to shunt fast transients. Use Value: Sub-1 ns response ensures clamping occurs before sensitive ADC inputs or transceivers experience overstress. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and secondary-side DC outputs from lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bulk capacitor to absorb residual line transients not filtered upstream. Use Value: 5.8 V VWM allows compatibility with 5 V output rails while maintaining >1000 µA leakage margin at full temperature range. |
Use Scenario: Protecting -48 V telecom power distribution boards from induced surges on long feeder cables. IC Role / Device Role / Timing Role: High-energy TVS mounted at board edge, cathode to -48 V rail, anode to ground plane. Use Value: 600 W rating handles repetitive surges per ITU-T K.20/21, and 185 °C rating sustains operation in sealed, high-temp cabinets. |
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 SMB package, but lower 150 °C max junction temperature and non-AEC-Q101 rated; VC = 11.2 V at 53.5 A | Lacks automotive qualification and high-temp capability; suitable for commercial-grade consumer or computing systems | Select SMBJ6.8A only if AEC-Q101 and +185 °C operation are not required - reduces cost where reliability margins allow. |
| TPSMB6.8AHM3_A/I | Identical electrical specs and AEC-Q101 qualification, but halogen-free molding compound and JESD201 Class 2 whisker resistance | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs; same thermal and surge performance | Choose TPSMB6.8AHM3_A/I when material compliance (halogen-free, whisker-safe) is mandated - no electrical trade-offs. |
Compared with SMBJ6.8A and TPSMB6.8AHM3_A/I, the TPSMB6.8AHE3_A/I provides AEC-Q101 qualification and +185 °C operation at standard RoHS compliance - making it optimal for cost-sensitive automotive modules where halogen-free materials are not contractually required.
Availability
TPSMB6.8AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMB6.8AHE3_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 high-reliability and automotive-grade performance.
The TPSMB series was engineered specifically for high-energy transient suppression in harsh-environment applications - delivering AEC-Q101 qualification, 185 °C operation, and consistent 600 W surge capability in the compact SMB package.
FAQ
What is the clamping voltage of TPSMB6.8AHE3_A/I and how is it measured?
The TPSMB6.8AHE3_A/I has a maximum clamping voltage (VC) of 10.5 V at 57.1 A peak pulse current, tested using the standardized 10/1000 µs double-exponential waveform. This value represents the highest voltage seen across the device during a 600 W transient event and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines. The TPSMB6.8AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is TPSMB6.8AHE3_A/I AEC-Q101 qualified and what does that cover?
Yes, TPSMB6.8AHE3_A/I is AEC-Q101 qualified - confirmed by the HE3 suffix and documentation in Vishay's 88406 datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, mechanical shock, and surge lifetime, ensuring suitability for automotive powertrain and body electronics. The TPSMB6.8AHE3_A/I meets all requirements for unidirectional TVS diodes per AEC-Q101 Rev D.
What is the difference between TPSMB6.8AHE3_A/I and TPSMB6.8AHM3_A/I?
The TPSMB6.8AHE3_A/I and TPSMB6.8AHM3_A/I share identical electrical specifications, AEC-Q101 qualification, and thermal ratings. The sole difference is material composition: TPSMB6.8AHM3_A/I uses halogen-free molding compound and passes JESD201 Class 2 whisker testing, whereas TPSMB6.8AHE3_A/I is RoHS-compliant but not halogen-free. Both use matte tin-plated leads and meet MSL Level 1.
Can TPSMB6.8AHE3_A/I be used in bidirectional configurations?
No, TPSMB6.8AHE3_A/I is unidirectional only - explicitly stated in the Vishay datasheet. It conducts surge current only when the cathode is more positive than the anode. For bidirectional protection (e.g., AC lines or differential buses), a separate symmetric TVS array or dedicated bidirectional device such as SMAJ6.8CA must be used. Using TPSMB6.8AHE3_A/I in reverse orientation will not provide clamping.
What is the maximum leakage current of TPSMB6.8AHE3_A/I at 5.8 V and 150 °C?
At VWM = 5.8 V and TJ = 150 °C, the TPSMB6.8AHE3_A/I exhibits a maximum reverse leakage current (ID) of 1000 µA, as specified in the Electrical Characteristics table. This is significantly higher than its 500 µA limit at 25 °C, reflecting expected thermal dependence of junction leakage - a key design consideration for high-temperature automotive applications.
TPSMB6.8AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 57.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
TPSMB6.8AHE3_A/I FAQ
1.How can I place an order for TPSMB6.8AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB6.8AHE3_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 TPSMB6.8AHE3_A/I reliable?
The price and inventory of TPSMB6.8AHE3_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 TPSMB6.8AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB6.8AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB6.8AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB6.8AHE3_A/I?
TPSMB6.8AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB6.8AHE3_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 TPSMB6.8AHE3_A/I?
For technical support, including TPSMB6.8AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB6.8AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB6.8AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB6.8AHE3_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 TPSMB6.8AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB6.8AHE3_A/I?
All TPSMB6.8AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB6.8AHE3_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 TPSMB6.8AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB6.8AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB6.8AHE3_A/I Tags
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