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Vishay General Semiconductor - Diodes Division TPSMB8.2AHE3/52T
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- Part No.:
- TPSMB8.2AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB8.2AHE3/52T.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,808
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Product details
Overview
TPSMB8.2AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 8.2 V breakdown voltage (VBR), 7.02 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 49.6 V clamping voltage at 49.6 A peak current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPSMB8.2AHE3/52T datasheet, TPSMB8.2AHE3/52T pinout, TPSMB8.2AHE3/52T application, or TPSMB8.2AHE3/52T equivalent, this device is selected for high-reliability automotive and industrial DC power line protection where AEC-Q101 qualification, low clamping ratio, and MSL Level 1 solderability are required.
Technical Context
The TPSMB8.2AHE3/52T uses passivated anisotropic rectifier technology to deliver stable avalanche clamping under repetitive surge conditions. Its unidirectional polarity and 10 mA test current ensure precise VBR control between 7.79 V (min) and 8.61 V (max), with a typical temperature coefficient of +0.056 %/°C.
Designed for PCB-level transient suppression, it delivers 49.6 V clamping at IPPM = 49.6 A (10/1000 µs), exhibits <100 µA reverse leakage at VWM, and maintains full functionality across –65 °C to +185 °C operating range - meeting AEC-Q101 stress requirements for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.79 / 8.20 / 8.61 V - defines precise avalanche initiation threshold under 10 mA DC test, critical for predictable clamping onset |
| VWM | 7.02 V - maximum continuous reverse working voltage before leakage exceeds 100 µA, sets safe DC bias margin |
| VC @ IPPM | 49.6 V - clamped voltage during 49.6 A 10/1000 µs surge, determines protected circuit's maximum overvoltage exposure |
| PPPM | 600 W - peak pulse power handling capability, enables robust protection against IEC 61000-4-5 Level 4 surges |
| TJ max. | +185 °C - extended junction temperature rating supports under-hood automotive placement without derating |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.155" footprint and MSL Level 1 reflow compatibility |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, AC/DC HAST, and bond wire strength per AEC standard |
Pinout & Package
TPSMB8.2AHE3/52T 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 |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Connected to system ground or lower-potential rail during TVS operation; defines unidirectional current path |
| Cathode | Current exit point in forward conduction; clamping node in reverse bias | Connected to protected line (e.g., 12 V rail); avalanche breakdown occurs between cathode and anode when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 4 kV surges without parallel staging |
| Clamping voltage ≤49.6 V at 49.6 A | Provides 6.1× VWM clamping ratio - tight enough to protect 3.3 V/5 V logic interfaces downstream of DC/DC converters |
| TJ = +185 °C capability | Eliminates thermal derating in engine-control units and power distribution modules operating near heat sources |
| AEC-Q101 qualified (HE3 suffix) | Confirms long-term reliability under automotive temperature cycling, humidity, and mechanical shock stress profiles |
| MSL Level 1, 260 °C peak reflow | Supports lead-free assembly without pre-baking or special handling, reducing manufacturing cost and risk |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges up to ±35 V within nanoseconds. Use Value: Prevents damage to downstream PMICs and microcontrollers during alternator field collapse events, validated per ISO 7637-2. | Use Scenario: Protecting analog outputs (4–20 mA) and digital I/O (CAN, RS-485) of factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal lines to absorb ESD (IEC 61000-4-2) and fast transients (IEC 61000-4-4) without loading the signal path. Use Value: Maintains signal integrity below 100 pF capacitance while surviving >30 kV air discharge due to optimized junction passivation. |
| Consumer DC Adapter Input Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Safeguarding primary-side rectifiers and controllers in wall adapters subjected to mains-borne surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor input to limit voltage overshoot during AC line switching events. Use Value: Withstands 75 A non-repetitive surge (8.3 ms half-sine) and provides fail-safe open-circuit behavior after rated stress. | Use Scenario: Front-end protection of PoE-powered switches and base station DC feeds exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Primary-stage TVS on -48 V or +57 V telecom supply rails to clamp common-mode surges before DC/DC isolation stages. Use Value: Delivers 600 W pulse power handling with <1 ns response time, ensuring compliance with GR-1089-CORE Section 4.5.2.2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower PPPM (400 W), higher VC (12.5 V @ 32.4 A), same SMB package | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is not required |
| TPSMB8.2AHM3/52T | Identical electrical specs; halogen-free molding compound and JESD 201 Class 2 whisker resistance | Same automotive application scope but meets stricter material compliance (e.g., EU RoHS + halogen-free) | Choose when environmental compliance mandates halogen-free construction without sacrificing performance or qualification |
Compared with SMAJ8.0A and TPSMB8.2AHM3/52T, the TPSMB8.2AHE3/52T uniquely combines AEC-Q101 qualification, 600 W pulse rating, and RoHS compliance in a single MSL Level 1–compatible SMB package - making it the preferred choice for Tier 1 automotive suppliers requiring audit-ready component traceability and zero derating at +150 °C ambient.
Availability
TPSMB8.2AHE3/52T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, full AEC-Q101 documentation, and MSL Level 1 reflow readiness.
Supply support for TPSMB8.2AHE3/52T 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, precision, and high-temperature operation.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure tolerance and long-term stability are non-negotiable.
FAQ
What is the breakdown voltage tolerance of TPSMB8.2AHE3/52T?
The TPSMB8.2AHE3/52T has a specified breakdown voltage (VBR) range of 7.79 V (minimum) to 8.61 V (maximum) at 10 mA test current, with a nominal value of 8.20 V. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in automotive and industrial systems where precise overvoltage thresholds are critical.
Is TPSMB8.2AHE3/52T suitable for bidirectional transient protection?
No, TPSMB8.2AHE3/52T is a unidirectional TVS diode and is not suitable for bidirectional protection. It conducts only in reverse breakdown (cathode-to-anode) and blocks forward current above ~3.5 V. For AC or dual-polarity signal lines, a dedicated bidirectional device such as the SMBJ8.0CA or a back-to-back unidirectional pair must be used instead of TPSMB8.2AHE3/52T.
Does TPSMB8.2AHE3/52T require derating at elevated ambient temperatures?
Yes - while the TPSMB8.2AHE3/52T supports a maximum junction temperature of +185 °C, its peak pulse power (PPPM) must be derated linearly above +25 °C ambient per Figure 2 in the datasheet. At +125 °C ambient, PPPM is reduced to approximately 420 W; full 600 W capability is only guaranteed at TA ≤ 25 °C with specified copper pad layout (0.2" × 0.2").
What does the "HE3" suffix indicate in TPSMB8.2AHE3/52T?
The "HE3" suffix in TPSMB8.2AHE3/52T denotes RoHS-compliant construction and AEC-Q101 qualification. It confirms that the device meets automotive reliability standards, uses matte tin-plated leads compliant with J-STD-002, passes JESD 201 Class 2 whisker testing, and is packaged in UL 94 V-0 molding compound - all verified per Vishay document 88406.
Can TPSMB8.2AHE3/52T be used in place of SMAJ8.2A in an existing design?
TPSMB8.2AHE3/52T is not a direct drop-in replacement for SMAJ8.2A due to differences in surge rating (600 W vs. 400 W), clamping voltage (49.6 V vs. 13.4 V), and qualification status (AEC-Q101 vs. commercial). While both use SMB packages, substituting TPSMB8.2AHE3/52T may over-constrain the design or alter protection timing; validation per IEC 61000-4-5 and ISO 7637-2 is required before implementation.
TPSMB8.2AHE3/52T 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):
- 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)
TPSMB8.2AHE3/52T FAQ
1.How can I place an order for TPSMB8.2AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB8.2AHE3/52T 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 TPSMB8.2AHE3/52T reliable?
The price and inventory of TPSMB8.2AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB8.2AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB8.2AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB8.2AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB8.2AHE3/52T?
TPSMB8.2AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB8.2AHE3/52T 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 TPSMB8.2AHE3/52T?
For technical support, including TPSMB8.2AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB8.2AHE3/52T requirements.
6.How does Aetrix verify that TPSMB8.2AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB8.2AHE3/52T 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 TPSMB8.2AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB8.2AHE3/52T?
All TPSMB8.2AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB8.2AHE3/52T, 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 TPSMB8.2AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB8.2AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB8.2AHE3/52T Tags
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