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Vishay General Semiconductor - Diodes Division TPSMB6.8A1BHE3/5BT
- Part No.:
- TPSMB6.8A1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB6.8A1BHE3/5BT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,688
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Product details
Overview
TPSMB6.8A1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for clamping inductive-switching and lightning-induced transients on signal lines and power rails. It features 6.8 V breakdown voltage (VBR), 5.8 V working peak reverse voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.5 V clamping voltage at 57.1 A, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMB6.8A1BHE3/5BT datasheet, TPSMB6.8A1BHE3/5BT pinout, TPSMB6.8A1BHE3/5BT application, or TPSMB6.8A1BHE3/5BT equivalent, this page delivers verified electrical specs, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and real-world clamping performance data for high-reliability transient suppression design.
Technical Context
The TPSMB6.8A1BHE3/5BT uses passivated anisotropic rectifier technology with optimized junction passivation, enabling stable operation at TJ = 185 °C and meeting MSL Level 1 (260 °C reflow). Its unidirectional polarity and cathode-band marking align with standard SMB PCB layout conventions.
It delivers 57.1 A peak pulse current (IPPM) under 10/1000 µs waveform with 10.5 V clamping voltage (VC), achieving low incremental surge resistance and fast response time - critical for protecting MOSFET gates and microcontroller I/O pins against ESD and load-dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V - ensures reliable turn-on above 5.8 V stand-off while avoiding false triggering during normal operation |
| VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 500 µA, defining safe operating margin for 5 V logic interfaces |
| VC @ IPPM | 10.5 V - clamps transients to safe levels for 3.3 V/5 V ICs when subjected to 57.1 A surge (10/1000 µs) |
| PPPM | 600 W - peak pulse power handling capacity under standardized surge waveform, supporting repetitive 0.01 % duty cycle |
| TJ max | +185 °C - enables deployment in under-hood automotive environments and high-temperature industrial enclosures without derating |
| IFSM | 75 A - withstands 8.3 ms half-sine surge, suitable for motor driver flyback and relay coil suppression |
| Leakage @ VWM | 500 µA - low standby current preserves battery life in always-on sensor nodes and automotive modules |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated terminals, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configurations |
| Cathode | Current exit terminal during clamping | Connected to protected line (e.g., CAN_H, LIN, sensor output); color band marks this end |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables use in automotive engine control units and industrial motor drives without thermal derating penalties |
| 600 W peak pulse power (10/1000 µs) | Provides robust immunity against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow processes without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤10.5 V, preserving 12-bit ADC accuracy and preventing latch-up in 3.3 V SAR converters. |
Use Scenario: Shielding RS-485 transceiver pins in programmable logic controllers subject to field wiring surges. IC Role / Device Role / Timing Role: Standoff protection device on differential bus lines (A/B), grounded via common-mode choke. Use Value: Clamps common-mode transients to <11 V while maintaining signal integrity up to 10 Mbps due to low capacitance (<100 pF). |
| Consumer Power Adapter Input | MOSFET Gate Protection |
|
Use Scenario: Suppressing line-side surges on AC-DC adapter primary-side rectifier outputs before bulk capacitor. IC Role / Device Role / Timing Role: Secondary-side transient suppressor across DC bus, referenced to ground. Use Value: Absorbs 600 W pulses without degradation, extending electrolytic capacitor lifetime and reducing failure rate in Class II adapters. |
Use Scenario: Preventing gate oxide rupture in N-channel power MOSFETs driven by PWM controllers in DC-DC converters. IC Role / Device Role / Timing Role: Clamp connected between gate and source, triggered by Miller-induced voltage spikes. Use Value: Responds in <1 ns to limit gate-source voltage to ≤10.5 V, eliminating need for external Zener diodes and saving board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Same SMB package, identical VBR/VC, but rated for 600 W with 10/1000 µs and not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial designs without automotive compliance requirements | Select SMBJ6.8A only if AEC-Q101 is not mandated and cost optimization is prioritized over long-term automotive reliability validation |
| 1.5SMC6.8A | Higher-power SMC package (1500 W), same VBR/VC, larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm), no AEC-Q101 listing | Used where higher surge margin is needed and PCB area allows larger case; not drop-in compatible with SMB layout | Choose 1.5SMC6.8A only when system-level surge testing exceeds 600 W requirements and board space permits SMC footprint |
Compared with SMBJ6.8A and 1.5SMC6.8A, the TPSMB6.8A1BHE3/5BT uniquely combines AEC-Q101 qualification, SMB footprint efficiency, and 185 °C operation - making it the sole option among the three for under-hood automotive sensor nodes requiring zero-layout change and full qualification traceability.
Availability
TPSMB6.8A1BHE3/5BT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and MOSFET gate clamping requiring stable component supply across production lifecycles.
Supply support for TPSMB6.8A1BHE3/5BT 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, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for robust electrostatic discharge and surge protection in harsh-environment applications including automotive powertrain and body electronics.
FAQ
What is the clamping voltage of the TPSMB6.8A1BHE3/5BT at its rated peak pulse current?
The TPSMB6.8A1BHE3/5BT has a maximum clamping voltage (VC) of 10.5 V at 57.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees that protected circuitry remains below 11 V during surge events - critical for safeguarding 3.3 V and 5 V logic interfaces. The TPSMB6.8A1BHE3/5BT achieves this with low incremental surge resistance and fast response.
Is the TPSMB6.8A1BHE3/5BT qualified for automotive applications?
Yes, the TPSMB6.8A1BHE3/5BT is AEC-Q101 qualified, as confirmed by its HE3 suffix and Vishay documentation (Document Number 88406, Revision 23-Jan-2024). It undergoes stress testing including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing to meet automotive reliability standards. The TPSMB6.8A1BHE3/5BT is approved for use in engine control, body electronics, and ADAS sensor modules.
What is the maximum operating junction temperature for the TPSMB6.8A1BHE3/5BT?
The TPSMB6.8A1BHE3/5BT supports a maximum junction temperature (TJ) of +185 °C, validated per Vishay's thermal characterization and qualification testing. This enables uninterrupted operation in under-hood automotive environments and high-temperature industrial settings without derating. The TPSMB6.8A1BHE3/5BT maintains specified VBR stability and leakage performance up to this limit, with temperature coefficient αT = 0.047 %/°C.
Does the TPSMB6.8A1BHE3/5BT have a unidirectional or bidirectional configuration?
The TPSMB6.8A1BHE3/5BT is a unidirectional transient voltage suppressor, as explicitly stated in the Vishay datasheet. Its polarity is marked by a cathode band, and it conducts only during reverse-biased overvoltage events - ideal for DC rail and signal-line protection where forward conduction is not required. Bidirectional variants (e.g., TPSMB6.8CA) are separate part numbers and not interchangeable with the TPSMB6.8A1BHE3/5BT.
What package type does the TPSMB6.8A1BHE3/5BT use, and is it RoHS-compliant?
The TPSMB6.8A1BHE3/5BT uses the SMB (DO-214AA) surface-mount package, with dimensions 4.57 mm × 3.94 mm × 2.29 mm and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It is RoHS-compliant and halogen-free, certified per Vishay's material categorization (www.vishay.com/doc?99912). The HE3 suffix confirms both RoHS compliance and AEC-Q101 qualification for the TPSMB6.8A1BHE3/5BT.
TPSMB6.8A1BHE3/5BT 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):
- 5.8V
- 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)
TPSMB6.8A1BHE3/5BT FAQ
1.How can I place an order for TPSMB6.8A1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB6.8A1BHE3/5BT 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 TPSMB6.8A1BHE3/5BT reliable?
The price and inventory of TPSMB6.8A1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB6.8A1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB6.8A1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB6.8A1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB6.8A1BHE3/5BT?
TPSMB6.8A1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB6.8A1BHE3/5BT 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 TPSMB6.8A1BHE3/5BT?
For technical support, including TPSMB6.8A1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB6.8A1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB6.8A1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB6.8A1BHE3/5BT 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 TPSMB6.8A1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB6.8A1BHE3/5BT?
All TPSMB6.8A1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB6.8A1BHE3/5BT, 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 TPSMB6.8A1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB6.8A1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB6.8A1BHE3/5BT Tags
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