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Vishay General Semiconductor - Diodes Division TPSMA8.2AHE3_B/I
- Part No.:
- TPSMA8.2AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA8.2AHE3_B/I.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,870
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Product details
Overview
TPSMA8.2AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 8.2 V nominal breakdown voltage (VBR), 7.02 V stand-off voltage (VWM), 33.1 V maximum clamping voltage (VC) at 200 A peak pulse current, 400 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA8.2AHE3_B/I datasheet, TPSMA8.2AHE3_B/I pinout, TPSMA8.2AHE3_B/I application, or TPSMA8.2AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 200 A IPPM rating, low 0.056 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly using 13" tape-and-reel delivery.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge conditions. Its 185 °C TJ max enables operation in high-temperature automotive engine compartments and industrial motor drive environments without derating penalties up to ambient 150 °C.
The device delivers 33.1 V clamping voltage at 200 A (10/1000 μs), with <1 ns response time and low incremental surge resistance - ensuring robust protection of downstream MOSFETs and ICs against ESD, load dump, and inductive switching transients in DC power rails and CAN/LIN bus interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.79 / 8.20 / 8.61 V - ensures reliable conduction onset above 7.02 V system operating voltage while avoiding false triggering |
| VWM | 7.02 V - defines maximum continuous reverse voltage before leakage exceeds 50 μA at 25 °C |
| VC @ IPPM | 33.1 V at 200 A - limits protected circuit voltage during worst-case 400 W transient, preserving 5 V or 12 V logic integrity |
| PPPM | 400 W (10/1000 μs) - sustains single high-energy surges common in automotive load-dump events |
| TJ max | 185 °C - supports AEC-Q101 qualification and uninterrupted operation in under-hood electronics |
| Leakage @ VWM | 50 μA at 25 °C - minimizes standby power loss in battery-powered sensor nodes |
| αT | 0.056 %/°C - enables predictable VBR shift across temperature, critical for precision clamp design |
Pinout & Package
SMA (DO-214AC) surface-mount package with matte tin-plated leads, UL 94 V-0 molding compound, and cathode band marking. Compliant with J-STD-002 solderability and JESD 22-B102 whisker testing (Class 2). MSL Level 1, peak reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VAK > VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier structure | Enables stable VBR and low leakage across 1000+ surge cycles without parameter drift |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V/100 ms in 12 V systems |
| Low 0.056 %/°C VBR tempco | Permits accurate clamping threshold prediction from -40 °C to +150 °C ambient |
| MSL Level 1 moisture sensitivity | Eliminates bake requirement prior to reflow, reducing manufacturing cost and risk of delamination |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤33.1 V, preventing ADC saturation and protecting 3.3 V or 5 V MCU inputs during 12 V system load dump events. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules connected to field switches and solenoids. IC Role / Device Role / Timing Role: Standoff protector on each isolated input channel, shunting inductive kickback from 24 V relay coils. Use Value: Clamps 400 W surges within 1 ns, maintaining channel isolation integrity and preventing false triggering of optocoupled inputs. |
| Telecom Power Rail Protection | Consumer USB Port ESD Suppression |
Use Scenario: Secondary overvoltage protection on +48 V DC telecom power distribution boards feeding remote radio units. IC Role / Device Role / Timing Role: Backup clamping device downstream of primary DC-DC converter, guarding against lightning-induced surges on long cable runs. Use Value: Withstands 200 A peak current at 33.1 V clamp, limiting stress on downstream POL converters rated for ≤36 V input. | Use Scenario: ESD protection on VBUS line of USB 2.0 Type-A ports in smart home hubs, where space constraints favor SMA footprint. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed between USB connector and USB switch IC. Use Value: Provides <1 ns response and 33.1 V clamping to meet IEC 61000-4-2 ±15 kV contact discharge requirements without degrading 480 Mbps signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | VBR = 8.89–9.82 V (min/typ/max); VC = 13.6 V @ 31.2 A; lower PPPM = 400 W but lower IPPM = 31.2 A | Lower energy handling - suitable only for low-current ESD, not load dump | Select SMAJ8.0A only for portable electronics with sub-10 A surge exposure; TPSMA8.2AHE3_B/I preferred for automotive/industrial 200 A surges |
| 1.5SMC8.2A | Same VBR/VC specs but SMC (DO-214AB) package - 2.5 mm wider body, higher thermal mass | Larger footprint incompatible with dense PCB layouts requiring SMA size | Choose 1.5SMC8.2A only when board layout allows larger SMC pad area and higher thermal dissipation is needed |
Compared with SMAJ8.0A and 1.5SMC8.2A, the TPSMA8.2AHE3_B/I uniquely combines AEC-Q101 qualification, SMA footprint, and 200 A surge capability - making it the optimal choice for space-constrained automotive and industrial designs requiring validated reliability and high-energy clamping.
Availability
TPSMA8.2AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power distribution boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMA8.2AHE3_B/I 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 high-reliability and automotive-grade performance.
The TPSMA series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor product line, engineered specifically for robust overvoltage protection in harsh-environment applications including engine control units, industrial automation, and 48 V telecom infrastructure.
FAQ
What is the exact breakdown voltage range for TPSMA8.2AHE3_B/I?
The TPSMA8.2AHE3_B/I has a guaranteed 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 specification is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 23-Jan-2024 (Document Number: 88405). The TPSMA8.2AHE3_B/I maintains this tolerance across its qualified temperature range.
Is TPSMA8.2AHE3_B/I AEC-Q101 qualified?
Yes, the TPSMA8.2AHE3_B/I is AEC-Q101 qualified. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, verified through standardized stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD. This qualification applies directly to the TPSMA8.2AHE3_B/I part number as stated in the Vishay ordering information table and mechanical data section.
What does the "B/I" suffix mean in TPSMA8.2AHE3_B/I?
The "B/I" suffix in TPSMA8.2AHE3_B/I indicates revision level "B" and packaging format "I", meaning 13-inch diameter plastic tape-and-reel with 7500 units per reel. This is defined in the Vishay ordering information table (page 3 of document 88405), where "I" corresponds to the 13" reel delivery mode - distinct from "H" (7" reel, 1800 units). The TPSMA8.2AHE3_B/I is fully compatible with standard SMT pick-and-place equipment.
Can TPSMA8.2AHE3_B/I be used in bidirectional configurations?
No, the TPSMA8.2AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet features section. It conducts transient current from cathode to anode only and must be oriented with cathode toward the protected line. For bidirectional protection, a separate device such as the TPSMA8.2CA (center-tapped, bidirectional variant) is required - the TPSMA8.2AHE3_B/I does not support reverse-polarity clamping.
What is the maximum clamping voltage of TPSMA8.2AHE3_B/I under surge conditions?
The maximum clamping voltage (VC) of the TPSMA8.2AHE3_B/I is 33.1 V at 200 A peak pulse current with a 10/1000 μs waveform, as specified in the Electrical Characteristics table (page 2 of document 88405). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - a critical parameter for validating safe operation of downstream 5 V or 12 V ICs.
TPSMA8.2AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 33.1A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA8.2AHE3_B/I FAQ
1.How can I place an order for TPSMA8.2AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA8.2AHE3_B/I 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 TPSMA8.2AHE3_B/I reliable?
The price and inventory of TPSMA8.2AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA8.2AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA8.2AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA8.2AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA8.2AHE3_B/I?
TPSMA8.2AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA8.2AHE3_B/I 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 TPSMA8.2AHE3_B/I?
For technical support, including TPSMA8.2AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA8.2AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA8.2AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA8.2AHE3_B/I 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 TPSMA8.2AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA8.2AHE3_B/I?
All TPSMA8.2AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA8.2AHE3_B/I, 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 TPSMA8.2AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA8.2AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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