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Vishay General Semiconductor - Diodes Division TPSMA8.2AHM3_B/H
- Part No.:
- TPSMA8.2AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA8.2AHM3_B/H.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,863
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Product details
Overview
TPSMA8.2AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching surges and lightning-induced transients. 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 AEC-Q101 qualification - used to protect MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the TPSMA8.2AHM3_B/H datasheet, TPSMA8.2AHM3_B/H pinout, TPSMA8.2AHM3_B/H application, or TPSMA8.2AHM3_B/H equivalent, key selection criteria include unidirectional polarity, 185 °C junction temperature rating, halogen-free RoHS-compliant construction, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable leakage and clamping across temperature. Its 185 °C maximum junction temperature enables operation in under-hood automotive environments where thermal derating of surge capability must be precisely modeled using αT = 0.056 %/°C.
The device delivers 33.1 V clamping at 200 A (10/1000 µs), with low incremental surge resistance ensuring minimal voltage overshoot during fast transients. It meets JESD201 Class 2 whisker resistance and is qualified per AEC-Q101 - confirming suitability for automotive powertrain and body control modules requiring long-term reliability under high-temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.79 / 8.20 / 8.61 V at 10 mA - defines precise voltage threshold at which avalanche conduction begins, critical for matching system overvoltage tolerance margins |
| VWM | 7.02 V - maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating bias on protected line |
| VC @ IPPM | 33.1 V at 200 A (10/1000 µs) - actual clamped voltage seen by downstream ICs during worst-case surge, directly limiting stress on protected components |
| PPPM | 400 W - peak transient energy handling capacity under standardized waveform; determines survivability against ISO 7637-2 Pulse 1/2a/5a events |
| TJ max | 185 °C - enables placement near heat sources (e.g., power MOSFETs) without derating loss; supports extended lifetime in automotive under-hood applications |
| Leakage @ VWM, 150 °C | 50 µA - low high-temperature leakage preserves signal integrity and battery drain budgets in always-on automotive modules |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.157" footprint; compatible with automated pick-and-place and reflow profiles up to 260 °C peak |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode indicated by molded band. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche diode structure | Connected to protected line (e.g., CAN_H, LIN, sensor VOUT); clamps positive transients to ground when voltage exceeds VBR |
| Anode | Cathode of internal avalanche diode structure | Typically tied to system ground plane; provides low-impedance return path for surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing - required for ECU, ADAS, and body electronics |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive OEM environmental requirements and enables compliance with ELV Directive and China RoHS II |
| MSL Level 1 (260 °C peak) | Eliminates need for baking prior to reflow assembly; supports standard lead-free reflow profiles without moisture-induced popcorn failure |
| 185 °C junction rating | Enables direct mounting adjacent to power semiconductors in motor drivers and DC-DC converters without thermal derating penalties |
| 0.01% duty cycle capability | Supports repetitive surge immunity in systems exposed to frequent load dump or relay bounce (e.g., HVAC actuators, fuel pumps) |
Applications
| Automotive Powertrain Control | Industrial Sensor Signal Protection |
|---|---|
|
Use Scenario: Protecting microcontroller I/O pins and gate drivers in engine control units subjected to ISO 7637-2 Pulse 5a load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and external connector to clamp positive-going surges above 7.02 V. Use Value: Limits clamped voltage to 33.1 V during 200 A surge, preventing latch-up or oxide breakdown in 5 V or 3.3 V logic interfaces. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop transmitters) in factory automation sensors exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb inductive kickback from nearby solenoid actuation. Use Value: Fast response time and low VC ensure analog signal integrity remains intact during sub-microsecond transients, avoiding measurement errors. |
| Automotive Body Electronics | Telecom Interface Protection |
|
Use Scenario: Shielding LIN bus transceivers in door module ECUs from ESD and cable discharge events per ISO 10605. IC Role / Device Role / Timing Role: Unidirectional TVS installed at LIN connector entry point, with cathode to LIN line and anode to chassis ground. Use Value: 50 µA leakage at 150 °C prevents excessive current draw in sleep mode, preserving battery life in parked vehicle scenarios. |
Use Scenario: Protecting RS-485 transceiver inputs in base station remote radio units located in lightning-prone outdoor enclosures. IC Role / Device Role / Timing Role: TVS deployed on differential pair (A/B) and common-mode lines to shunt induced surges from antenna coupling or ground potential rise. Use Value: 400 W peak power rating ensures survival of multiple 10/1000 µs surges without degradation, supporting >10-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | 8.0 V VBR min, 34.4 V VC @ 192 A, SMB package (larger footprint), same 400 W rating | Higher VC and larger PCB area requirement; not AEC-Q101 qualified in standard grade | Select when board space allows larger package and automotive qualification is not required |
| TPSMA8.2AHE3_B/H | Identical electrical specs but HE3 suffix: RoHS-compliant with AEC-Q101 qualification, no halogen-free guarantee | Acceptable for non-halogen-restricted automotive programs; same thermal and surge performance | Choose when halogen content is not mandated by OEM specification and cost optimization is prioritized |
Compared with TPSMA8.2AHM3_B/H, SMBJ8.0A offers comparable surge handling but lacks halogen-free assurance and automotive qualification, while TPSMA8.2AHE3_B/H matches all electrical parameters but omits halogen-free compliance - making TPSMA8.2AHM3_B/H the sole option meeting full AEC-Q101 + halogen-free + RoHS requirements in SMA form factor.
Availability
TPSMA8.2AHM3_B/H is available at Aetrix Electronics and suitable for automotive powertrain control, industrial sensor signal protection, and telecom interface protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for TPSMA8.2AHM3_B/H 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 robustness, and automotive-grade qualification.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient suppression platform, engineered specifically for high-temperature, high-reliability protection in automotive and industrial environments where sustained 150–185 °C operation is mandatory.
FAQ
What is the breakdown voltage tolerance for TPSMA8.2AHM3_B/H?
The TPSMA8.2AHM3_B/H has a guaranteed breakdown voltage range of 7.79 V (min) to 8.61 V (max) at 10 mA test current, with 8.20 V nominal. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable margining against system overvoltage thresholds in automotive designs.
Is TPSMA8.2AHM3_B/H suitable for bidirectional transient protection?
No, TPSMA8.2AHM3_B/H is unidirectional only, as confirmed by Vishay documentation. It protects against positive-going transients on the cathode side relative to anode (ground). For bidirectional protection, a separate device such as P6SMB8.2CA or dual-series configuration would be required - TPSMA8.2AHM3_B/H must not be used in AC-coupled or symmetrical surge scenarios.
Does TPSMA8.2AHM3_B/H require derating at elevated ambient temperatures?
Yes, TPSMA8.2AHM3_B/H must be derated per Figure 2 in the datasheet: peak pulse power decreases linearly above 25 °C ambient, reaching ~50% of 400 W at 125 °C case temperature. Designers must apply the VBR temperature coefficient (αT = 0.056 %/°C) and verify clamping margin at maximum expected TJ in the final layout.
What does the "HM3" suffix indicate in TPSMA8.2AHM3_B/H?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Unlike HE3 variants, HM3 guarantees absence of bromine, chlorine, and other halogens per IEC 61249-2-21, fulfilling strict environmental mandates for Tier 1 automotive suppliers and green electronics initiatives.
Can TPSMA8.2AHM3_B/H be used in place of TPSMA8.2AHE3_B/H without design changes?
Yes - TPSMA8.2AHM3_B/H and TPSMA8.2AHE3_B/H share identical electrical specifications, package (SMA), pinout, and thermal characteristics. The only difference is material content: HM3 adds halogen-free assurance. No PCB layout, schematic, or firmware changes are needed when substituting HM3 for HE3 in existing designs.
TPSMA8.2AHM3_B/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA8.2AHM3_B/H FAQ
1.How can I place an order for TPSMA8.2AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA8.2AHM3_B/H 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 TPSMA8.2AHM3_B/H reliable?
The price and inventory of TPSMA8.2AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA8.2AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA8.2AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA8.2AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA8.2AHM3_B/H?
TPSMA8.2AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA8.2AHM3_B/H 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 TPSMA8.2AHM3_B/H?
For technical support, including TPSMA8.2AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA8.2AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA8.2AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA8.2AHM3_B/H 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 TPSMA8.2AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA8.2AHM3_B/H?
All TPSMA8.2AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA8.2AHM3_B/H, 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 TPSMA8.2AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA8.2AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA8.2AHM3_B/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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