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Vishay General Semiconductor - Diodes Division TPSMB6.8AHE3/52T
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- Part No.:
- TPSMB6.8AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB6.8AHE3/52T.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,586
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Product details
Overview
TPSMB6.8AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients 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, and operates up to +185 °C junction temperature - ideal for automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB6.8AHE3/52T datasheet, TPSMB6.8AHE3/52T pinout, TPSMB6.8AHE3/52T application, or TPSMB6.8AHE3/52T equivalent, this page delivers verified package mapping (SMB/DO-214AA), polarity confirmation (cathode-banded), thermal derating curves, clamping performance under surge conditions, and AEC-Q101 qualification status for automotive-grade deployment.
Technical Context
The TPSMB6.8AHE3/52T employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides fast response time (<1 ns) and excellent clamping ratio (VC/VBR ≈ 8.4), enabling robust protection of downstream MOSFETs and ICs against repetitive 10/1000 µs transients at 0.01% duty cycle.
Rated for TJ = –65 °C to +185 °C and qualified per AEC-Q101, the device supports automotive under-hood applications where thermal cycling and long-term reliability are critical. Its MSL Level 1 rating (260 °C reflow peak) and matte tin-plated leads ensure compatibility with standard SMT assembly processes without whisker risk.
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 for avalanche conduction onset |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage during 600 W transient, limiting stress on protected circuitry |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy handling capacity under standardized test condition |
| IFSM | 75 A (8.3 ms half-sine) - single-event forward surge current rating for fuse coordination |
| TJ max | +185 °C - enables operation in high-ambient environments such as engine control units and power converters |
| αT | 0.047 %/°C - temperature coefficient of VBR, used to calculate breakdown shift over operating range |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), 0.096 g unit weight, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side rail | Completes conduction path during transient clamp; must be routed with low-inductance trace to minimize VL overshoot |
| Cathode | Current exit terminal in forward bias; marked by color band; connects to protected line (e.g., 5 V rail) | Defines polarity - only conducts when cathode voltage exceeds anode by ≥VBR; incorrect orientation disables protection |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage across temperature and life cycle |
| AEC-Q101 qualification | Validated for automotive electronics including powertrain and body control modules requiring zero-failure reliability |
| MSL Level 1 | Supports lead-free reflow up to 260 °C peak without popcorn effect or delamination |
| Low incremental surge resistance | Minimizes VC rise during high-di/dt events, improving clamping precision for sensitive 3.3 V/5 V logic |
| 185 °C junction rating | Enables placement near heat sources (e.g., DC-DC inductors) without derating penalty in industrial motor drives |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to shunt >100 V spikes within nanoseconds. Use Value: Withstands 75 A single-pulse surge and maintains clamping below 10.5 V, preventing latch-up in MCU power domains. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V output lines to absorb inductive turn-off energy. Use Value: 500 µA leakage at 5.8 V ensures minimal signal error; 10.5 V clamping preserves ADC reference integrity. |
| Consumer Device USB Port ESD Suppression | Telecom Base Station DC Power Input |
Use Scenario: Secondary-level surge protection on USB VBUS lines in set-top boxes and smart displays subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS upstream of polyfuse and LDO to limit voltage before overcurrent activation. Use Value: 5.8 V VWM allows full 5 V operation; 600 W rating handles multiple 10/1000 µs surges without degradation. | Use Scenario: Front-end transient suppression on –48 V DC telecom power inputs vulnerable to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: High-energy TVS mounted directly at connector entry point to divert >1 kV transients before DC/DC converter stage. Use Value: 185 °C rating ensures uninterrupted operation in sealed, fanless enclosures; RoHS-compliant HE3 suffix meets telco compliance requirements. |
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/VWM/VC, but rated for 600 W at 10/1000 µs and not AEC-Q101 qualified | Targeted at commercial/industrial use; lacks automotive qualification documentation and high-temp lifetime validation | Select SMBJ6.8A only if AEC-Q101 is not required and cost sensitivity outweighs long-term reliability needs |
| SMCJ6.8A | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; same electrical specs otherwise | Used where higher surge margin is needed (e.g., outdoor telecom); requires PCB layout change due to larger footprint | Choose SMCJ6.8A when system-level surge testing exceeds 600 W or when design allows larger package for enhanced margin |
Compared with SMBJ6.8A, TPSMB6.8AHE3/52T adds AEC-Q101 qualification and 185 °C operation for automotive use; compared with SMCJ6.8A, it trades surge headroom for space-constrained SMB mounting - making TPSMB6.8AHE3/52T optimal for compact, high-reliability 12 V systems.
Availability
TPSMB6.8AHE3/52T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface clamping, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 compliance, and high-temperature operational assurance.
Supply support for TPSMB6.8AHE3/52T 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, thermal performance, and automotive-grade qualification.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor family, engineered specifically for high-energy, high-temperature environments in automotive and industrial power systems where consistent clamping and long-term stability are mandatory.
FAQ
What is the exact breakdown voltage tolerance for TPSMB6.8AHE3/52T?
The TPSMB6.8AHE3/52T has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current (VBR min/typ/max), per Vishay Document 88406. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting robust design margins in automotive and industrial applications where precise overvoltage thresholds are critical.
Is TPSMB6.8AHE3/52T compatible with lead-free reflow soldering processes?
Yes, TPSMB6.8AHE3/52T meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, confirmed by Vishay's qualification testing. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the HE3 suffix indicates full RoHS compliance and whisker resistance per JESD 201 Class 2 - making TPSMB6.8AHE3/52T fully compatible with standard lead-free SMT assembly lines.
Does TPSMB6.8AHE3/52T have AEC-Q101 qualification, and what does that cover?
Yes, TPSMB6.8AHE3/52T carries AEC-Q101 qualification, as explicitly stated in Vishay's datasheet revision 23-Jan-2024 (Document 88406). This qualification covers stress tests including HTGB, AC/DC life test, temperature cycling, and mechanical shock - validating its suitability for automotive electronic components in non-safety-critical but reliability-demanding applications such as body control modules and infotainment power supplies.
How does the clamping voltage of TPSMB6.8AHE3/52T compare to its breakdown voltage?
The TPSMB6.8AHE3/52T clamps at 10.5 V when subjected to its rated 57.1 A peak pulse current (IPPM), yielding a clamping ratio (VC/VBR) of approximately 8.4. This ratio reflects low incremental surge resistance and efficient energy diversion - critical for protecting 5 V logic rails where exceeding 10.5 V could damage downstream ICs, while maintaining tight coordination with upstream fuses or current limiters.
Can TPSMB6.8AHE3/52T be used in bidirectional configurations?
No, TPSMB6.8AHE3/52T is unidirectional only, as confirmed in the "Features" section of Vishay Document 88406. Its internal structure supports conduction only from cathode to anode during overvoltage events. For bidirectional protection (e.g., AC lines or differential data buses), a separate dual-diode configuration or a dedicated bidirectional TVS such as TPSMB6.8CA must be selected - TPSMB6.8AHE3/52T cannot be repurposed for reverse-polarity clamping.
TPSMB6.8AHE3/52T 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 (SMBJ)
TPSMB6.8AHE3/52T FAQ
1.How can I place an order for TPSMB6.8AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB6.8AHE3/52T 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 TPSMB6.8AHE3/52T reliable?
The price and inventory of TPSMB6.8AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB6.8AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB6.8AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB6.8AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB6.8AHE3/52T?
TPSMB6.8AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB6.8AHE3/52T 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 TPSMB6.8AHE3/52T?
For technical support, including TPSMB6.8AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB6.8AHE3/52T requirements.
6.How does Aetrix verify that TPSMB6.8AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB6.8AHE3/52T 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 TPSMB6.8AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB6.8AHE3/52T?
All TPSMB6.8AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB6.8AHE3/52T, 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 TPSMB6.8AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB6.8AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB6.8AHE3/52T Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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