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Vishay General Semiconductor - Diodes Division TPSMB8.2AHE3/5BT
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- Part No.:
- TPSMB8.2AHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB8.2AHE3/5BT.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,165
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Product details
Overview
TPSMB8.2AHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features 8.2 V nominal breakdown voltage (VBR), 7.02 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 49.6 V maximum clamping voltage at 49.6 A peak pulse current, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMB8.2AHE3/5BT datasheet, TPSMB8.2AHE3/5BT pinout, TPSMB8.2AHE3/5BT application, or TPSMB8.2AHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, 100 μA max reverse leakage at VWM, and thermal derating behavior above 25 °C ambient.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under high-temperature stress (TJ = 185 °C), with low incremental surge resistance enabling consistent voltage limiting during repetitive 10/1000 μs transients. Its unidirectional configuration supports DC-biased rail protection without forward conduction interference.
The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), employs matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 - confirming suitability for automotive ECUs and under-hood electronics where reliability under thermal cycling and mechanical shock is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.79 / 8.20 / 8.61 V - defines precise clamping onset threshold at 10 mA test current |
| VWM | 7.02 V - maximum continuous reverse operating voltage before leakage exceeds 100 μA |
| PPPM | 600 W - peak transient energy absorption capability under standardized 10/1000 μs waveform |
| VC @ IPPM | 12.1 V - clamped voltage seen by protected circuit at 49.6 A peak pulse current |
| IFSM | 75 A - surge current handling for 8.3 ms half-sine wave, critical for motor driver flyback suppression |
| TJ max. | +185 °C - enables operation in engine control units and industrial inverters without thermal shutdown |
| αT | 0.056 %/°C - temperature coefficient of VBR, used to calculate breakdown shift across 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); 0.220" × 0.155" mounting pad layout recommended.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail); conducts only when VIN exceeds VBR |
| Cathode | Current exit point during clamping; marked by color band | Connected to ground or lower-potential reference; determines unidirectional polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over 1000+ thermal cycles |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per standard |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without popcorn or delamination risk |
| Low clamping ratio (VC/VBR) | 1.48 - tight voltage margin between trigger and clamp improves system-level overvoltage margin |
| High IPPM density | 49.6 A in SMB package - delivers robust surge immunity without requiring larger footprint alternatives |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VCC and GND to clamp transients before they reach IC supply pins. Use Value: Maintains 7.02 V stand-off while clamping to 12.1 V at 49.6 A - preserving signal integrity and preventing latch-up in 5 V/3.3 V sensor ICs. |
Use Scenario: Safeguarding AC/DC and DC/DC converter inputs against surges from relay switching, ESD events, and grid disturbances. IC Role / Device Role / Timing Role: Parallel-connected TVS on primary-side DC bus (e.g., 24 V input) to shunt energy into chassis ground. Use Value: 600 W peak power rating and 75 A IFSM withstand capability enable reliable operation in DIN-rail mounted PLC power supplies. |
| Consumer Device USB Port Protection | Telecom Line Interface |
Use Scenario: Secondary-level surge suppression on 5 V USB VBUS lines in set-top boxes and smart home hubs exposed to external adapters. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after fuse and upstream of USB controller to limit voltage during hot-plug transients. Use Value: 100 μA max reverse leakage at 7.02 V ensures minimal standby current drain; 12.1 V clamping prevents damage to USB PHY transceivers. |
Use Scenario: Overvoltage protection on low-voltage telecom interface circuits (e.g., RS-485, V.28) connected to field wiring subject to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional-capable systems use two unidirectional devices back-to-back; TPSMB8.2AHE3/5BT serves as one leg in such configurations. Use Value: 185 °C TJ max and 0.056 %/°C αT ensure stable clamping performance across outdoor cabinet temperature ranges (-40 to +85 °C ambient). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | VBR = 8.0–8.89 V (min/typ/max); VWM = 6.8 V; VC = 12.7 V @ 47.2 A | Lower VWM reduces margin for 7 V nominal rails; higher VC increases stress on downstream components | Select when tighter VBR tolerance is required and 0.2 V lower VWM is acceptable in design margin |
| SMCJ8.0A | Same VBR/VWM range but SMC (DO-214AB) package; 1500 W PPPM; 127 A IPPM | Larger footprint (7.11 mm × 6.22 mm) and higher surge capacity suit high-energy industrial mains interfaces | Choose for applications needing >600 W surge headroom and PCB space permits larger SMC package |
Compared with SMBJ8.0A and SMCJ8.0A, the TPSMB8.2AHE3/5BT offers optimal balance of AEC-Q101 qualification, SMB footprint compatibility, and 600 W clamping performance - making it preferred for space-constrained automotive and industrial modules where qualification and thermal robustness are prioritized over raw power rating.
Availability
TPSMB8.2AHE3/5BT is available at Aetrix Electronics and suitable for automotive ECU design, industrial power supply input protection, and telecom interface surge suppression requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for TPSMB8.2AHE3/5BT 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, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive-grade qualification.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for high-reliability clamping in harsh environments - including under-hood automotive, industrial automation, and infrastructure equipment where sustained 185 °C junction operation is mandatory.
FAQ
Is TPSMB8.2AHE3/5BT AEC-Q101 qualified?
Yes, the TPSMB8.2AHE3/5BT is AEC-Q101 qualified. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, verified per the Vishay qualification report referenced in document 88406. This qualification covers temperature cycling, highly accelerated life testing (HALT), and mechanical shock - confirming suitability for automotive electronic control units and body electronics modules.
What is the maximum clamping voltage of TPSMB8.2AHE3/5BT at rated peak pulse current?
The TPSMB8.2AHE3/5BT has a maximum clamping voltage (VC) of 12.1 V when subjected to its rated peak pulse current (IPPM) of 49.6 A under the 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88406 and represents the upper bound voltage seen by protected circuitry during worst-case transient events.
Does TPSMB8.2AHE3/5BT support bidirectional transient suppression?
No, TPSMB8.2AHE3/5BT is unidirectional only. Its electrical characteristics - including breakdown voltage specification, reverse leakage limits, and clamping behavior - are defined exclusively for reverse-bias operation. For bidirectional protection, two TPSMB8.2AHE3/5BT devices may be connected in series opposition, or a dedicated bidirectional TVS such as SMBJ8.0CA should be selected.
What is the thermal derating behavior of TPSMB8.2AHE3/5BT above 25 °C ambient?
The TPSMB8.2AHE3/5BT follows linear derating above 25 °C ambient, as shown in Figure 2 of Vishay document 88406. Peak pulse power (PPPM) decreases to approximately 50 % at +125 °C ambient and reaches zero at +185 °C junction temperature. Designers must apply this curve when sizing thermal pads and estimating safe operating area in high-temperature enclosures.
Can TPSMB8.2AHE3/5BT be used in place of TPSMB8.0A in existing designs?
TPSMB8.2AHE3/5BT is not a direct replacement for TPSMB8.0A due to differences in breakdown voltage (8.20 V vs. 8.00 V nominal), stand-off voltage (7.02 V vs. 6.8 V), and clamping voltage (12.1 V vs. 12.7 V). While both share SMB packaging and AEC-Q101 qualification, the 0.2 V higher VBR and VWM affect margin in 7–8 V rail applications - redesign validation is required before substitution.
TPSMB8.2AHE3/5BT 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 49.6A
- 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)
TPSMB8.2AHE3/5BT FAQ
1.How can I place an order for TPSMB8.2AHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB8.2AHE3/5BT 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 TPSMB8.2AHE3/5BT reliable?
The price and inventory of TPSMB8.2AHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB8.2AHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB8.2AHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB8.2AHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB8.2AHE3/5BT?
TPSMB8.2AHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB8.2AHE3/5BT 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 TPSMB8.2AHE3/5BT?
For technical support, including TPSMB8.2AHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB8.2AHE3/5BT requirements.
6.How does Aetrix verify that TPSMB8.2AHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB8.2AHE3/5BT 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 TPSMB8.2AHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB8.2AHE3/5BT?
All TPSMB8.2AHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB8.2AHE3/5BT, 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 TPSMB8.2AHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB8.2AHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB8.2AHE3/5BT Tags
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