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Vishay General Semiconductor - Diodes Division TPSMB6.8HE3/5BT
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- Part No.:
- TPSMB6.8HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB6.8HE3/5BT.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
TPSMB6.8HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and ESD events 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), 57.1 V clamping voltage at 57.1 A peak current, and operates up to +185 °C junction temperature - ideal for automotive power rail protection in engine control units and body electronics.
For engineers reviewing the TPSMB6.8HE3/5BT datasheet, TPSMB6.8HE3/5BT pinout, TPSMB6.8HE3/5BT application, or TPSMB6.8HE3/5BT equivalent, this page delivers verified electrical specs, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and direct alternatives with documented parameter differences.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity enables forward-biased clamping during positive transients while blocking reverse leakage below 5.8 V.
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it delivers fast response time and excellent clamping ratio (VC/VBR ≈ 8.4) under standardized 10/1000 µs waveform conditions - meeting IEC 61000-4-5 Level 3/4 surge immunity requirements in compact SMB footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA - defines precise clamping initiation threshold for overvoltage detection |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse operating voltage without significant leakage |
| Clamping Voltage VC | 10.5 V at 57.1 A (10/1000 µs) - limits downstream IC voltage stress during surge events |
| Peak Pulse Power PPPM | 600 W - sustains transient energy dissipation without thermal runaway on 5 mm × 5 mm copper pads |
| Junction Temperature Range | −65 °C to +185 °C - supports under-hood automotive deployment and industrial high-temp environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements including HTGB, HTRB, and TCT |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with cathode band marking and MSL Level 1 rating |
Pinout & Package
TPSMB6.8HE3/5BT is housed in an SMB (DO-214AA) plastic package with matte tin-plated leads. Cathode is marked by a color band; terminals are solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C Junction Rating | Enables operation in high-ambient automotive zones (e.g., powertrain modules) without derating penalties |
| 600 W Peak Pulse Power | Handles IEC 61000-4-5 combination wave surges (e.g., 2 Ω source impedance, 1 kV) without failure |
| Low Clamping Ratio (VC/VBR ≈ 8.4) | Minimizes voltage overshoot across protected MOSFET gates or microcontroller I/O pins |
| AEC-Q101 Qualified (HE3 suffix) | Confirms compliance with automotive reliability standards including temperature cycling and humidity testing |
| MSL Level 1, 260 °C Reflow Compatible | Supports standard lead-free reflow profiles without moisture-induced popcorning or delamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 16750-2) and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before DC/DC regulators. Use Value: Withstands 75 A surge (8.3 ms) and clamps to ≤10.5 V, preserving downstream LDOs and MCU power domains. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal lines to prevent latch-up in op-amp inputs or ADC front-ends. Use Value: Sub-100 pF junction capacitance at zero bias ensures minimal signal distortion in 100 kHz sensor bandwidths. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding USB VBUS and D+/D− lines in portable chargers and docking stations against human-body-model ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS rail to absorb ±15 kV contact discharge without conduction during normal 5 V operation. Use Value: 5.8 V VWM exceeds USB 2.0 spec, enabling robust protection without false triggering. |
Use Scenario: Front-end surge suppression on telephone line interfaces exposed to lightning-induced transients. IC Role / Device Role / Timing Role: Primary clamping device in hybrid protection circuits with gas discharge tubes and PTCs. Use Value: 600 W rating handles ITU-T K.20/K.21 Level 4 surges (10/700 µs, 1 kV) when coordinated with upstream GDTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Same VBR range (6.45–7.14 V), but lower PPPM = 400 W and higher VC = 11.2 V at 35.2 A | Less suitable for ISO 16750-2 load dump; better for cost-sensitive consumer ESD-only use cases | Select SMAJ6.8A only if peak surge energy is ≤400 W and layout space constraints favor smaller SMA package |
| SMCJ6.8A | Higher PPPM = 1500 W, same VBR, but larger SMC (DO-214AB) package and 12.7 V clamping at 118 A | Preferred for high-energy telecom or industrial AC line protection where PCB area allows | Choose SMCJ6.8A when system-level surge tests exceed 600 W or require >100 A peak current handling |
Compared with SMAJ6.8A and SMCJ6.8A, TPSMB6.8HE3/5BT offers optimal balance of automotive qualification, 600 W capability, and SMB footprint - making it the preferred choice for space-constrained, high-reliability 12 V systems requiring AEC-Q101 validation.
Availability
TPSMB6.8HE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power delivery systems, and telecom line card surge protection requiring stable component supply and full traceability.
Supply support for TPSMB6.8HE3/5BT 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 qualification.
The TPSMB6.8HE3/5BT belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial power systems.
FAQ
What is the exact breakdown voltage tolerance for TPSMB6.8HE3/5BT?
The TPSMB6.8HE3/5BT has a guaranteed breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, per Vishay Document Number 88406. This ±5% tolerance around the nominal 6.8 V value ensures consistent clamping behavior across production lots and temperature extremes up to +185 °C.
Is TPSMB6.8HE3/5BT qualified for automotive applications?
Yes, TPSMB6.8HE3/5BT is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88406 datasheet. It passes stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - making it suitable for under-hood and chassis-mounted automotive modules.
What is the maximum clamping voltage of TPSMB6.8HE3/5BT under surge conditions?
The TPSMB6.8HE3/5BT clamps to a maximum of 10.5 V at 57.1 A peak pulse current (10/1000 µs waveform), measured per IEC 61000-4-5 test conditions. This low VC ensures protected components like 5 V logic ICs or 12 V MOSFETs remain within safe operating voltage margins during transient events.
Does TPSMB6.8HE3/5BT have a bidirectional configuration option?
No, TPSMB6.8HE3/5BT is unidirectional only, as explicitly stated in the Vishay datasheet. For bidirectional protection, engineers must select alternate part numbers such as TPSMB6.8CA (if available) or consider series-connected unidirectional devices - but TPSMB6.8HE3/5BT itself supports only cathode-to-line orientation.
What is the thermal derating behavior of TPSMB6.8HE3/5BT above 25 °C ambient?
TPSMB6.8HE3/5BT follows linear derating above 25 °C ambient: peak pulse power decreases by approximately 0.67% per °C rise, based on Figure 2 in Vishay Document 88406. At 125 °C ambient, its usable PPPM drops to ~400 W - a critical consideration for engine bay or enclosed industrial enclosure deployments.
TPSMB6.8HE3/5BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 55.6A
- 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 (SMBJ)
TPSMB6.8HE3/5BT FAQ
1.How can I place an order for TPSMB6.8HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB6.8HE3/5BT 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 TPSMB6.8HE3/5BT reliable?
The price and inventory of TPSMB6.8HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB6.8HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB6.8HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB6.8HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB6.8HE3/5BT?
TPSMB6.8HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB6.8HE3/5BT 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 TPSMB6.8HE3/5BT?
For technical support, including TPSMB6.8HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB6.8HE3/5BT requirements.
6.How does Aetrix verify that TPSMB6.8HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB6.8HE3/5BT 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 TPSMB6.8HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB6.8HE3/5BT?
All TPSMB6.8HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB6.8HE3/5BT, 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 TPSMB6.8HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB6.8HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB6.8HE3/5BT Tags
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