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Vishay General Semiconductor - Diodes Division TPSMA8.2AHM3_B/I
- Part No.:
- TPSMA8.2AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA8.2AHM3_B/I.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,013
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Product details
Overview
TPSMA8.2AHM3_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), 400 W peak pulse power (10/1000 µs), 33.1 V maximum clamping voltage at 200 A IPPM, and operates up to +185 °C junction temperature - ideal for automotive sensor line protection.
For engineers reviewing the TPSMA8.2AHM3_B/I datasheet, TPSMA8.2AHM3_B/I pinout, TPSMA8.2AHM3_B/I application, or TPSMA8.2AHM3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, 1.0 W steady-state power dissipation, and halogen-free RoHS compliance per ordering suffix HM3.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under high-temperature stress. Its 10/1000 µs waveform response delivers 200 A peak pulse current (IPPM) while maintaining low incremental surge resistance and fast response time - critical for protecting MOSFET gates and IC inputs against ESD and inductive switching spikes.
The device is rated for TJ = –65 °C to +185 °C and meets JESD201 Class 2 whisker testing. The cathode band marking and matte tin-plated terminals ensure reliable solderability per J-STD-002 and JESD22-B102, with thermal derating defined per Figure 2 of the datasheet.
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 where avalanche conduction begins |
| VWM | 7.02 V - maximum continuous reverse voltage before leakage exceeds 50 µA at 25 °C |
| VC @ IPPM | 33.1 V at 200 A - clamped voltage during 400 W transient, limiting downstream stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy handling capability without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation in circuit |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and 0.074" height |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: two terminals, cathode marked by color band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet note (2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche diode structure | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode | Cathode of internal avalanche diode structure | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets EU RoHS Directive 2011/65/EU and IEC 61249-2-21 for environmentally constrained applications |
| MSL Level 1 (260 °C peak) | Zero floor life limitation - can be stored indefinitely and reflowed without baking |
| Low clamping ratio (VC/VBR ≈ 4.04) | Ensures tight voltage margin between operating rail and clamping level, reducing risk of overvoltage damage |
| 185 °C junction rating | Supports placement near heat sources (e.g., power converters, motor drivers) without derating penalties |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input pins. Use Value: With 33.1 V clamping at 200 A and 185 °C operation, TPSMA8.2AHM3_B/I maintains protection integrity across full automotive temperature range without thermal shutdown. | Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel, absorbing repetitive 400 W transients without degradation over >100,000 cycles. Use Value: 7.02 V VWM ensures no leakage interference with 24 V logic thresholds, while 400 W PPPM handles worst-case inductive kickback from solenoid loads. |
| Consumer Power Adapter Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for USB-C PD chargers and smart home hubs exposed to mains-borne noise. IC Role / Device Role / Timing Role: Clamping diode across DC output rails to limit overvoltage events caused by transformer ringing or capacitor discharge. Use Value: 1.0 W steady-state power rating allows continuous operation under light-load leakage conditions, while SMA package supports high-density PCB layouts. | Use Scenario: Protecting Ethernet PHY interface circuits (e.g., RJ45 magnetics secondary side) from lightning-induced surges per IEC 61000-4-5 Level 3 (1 kV/2 kV). IC Role / Device Role / Timing Role: Unidirectional TVS on differential pairs to clamp common-mode transients without distorting signal integrity. Use Value: 33.1 V clamping voltage aligns with 2.5 V/3.3 V PHY supply margins, and 10.5 %/°C VBR tempco ensures predictable behavior across –40 °C to +85 °C ambient. |
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); VWM = 7.2 V; VC = 12.7 V @ 31.5 A; lower PPPM = 400 W but lower IPPM | Lower clamping voltage but significantly reduced surge current capacity - suitable for lower-energy transients | Select SMAJ8.0A only if peak surge current remains below 31.5 A; not interchangeable for 200 A events |
| 1.5SMC8.2A | Same VBR/VWM specs; larger SMC (DO-214AB) package; 1.5 kW PPPM; higher thermal mass | Requires larger PCB area and different pad layout; better for high-repetition-rate surges due to superior thermal dissipation | Choose 1.5SMC8.2A when board space permits and thermal cycling endurance is critical; not drop-in compatible |
Compared with SMAJ8.0A and 1.5SMC8.2A, TPSMA8.2AHM3_B/I uniquely combines AEC-Q101 qualification, halogen-free construction, MSL Level 1, and 200 A surge capability in the compact SMA footprint - making it optimal for space-constrained automotive and industrial designs requiring certified reliability.
Availability
TPSMA8.2AHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and telecom line protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant parts traceability.
Supply support for TPSMA8.2AHM3_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 was developed specifically for robust transient suppression in harsh environments - targeting automotive powertrain, body electronics, and industrial control systems where temperature stability and AEC-Q101 validation are mandatory.
FAQ
What is the exact breakdown voltage tolerance for TPSMA8.2AHM3_B/I?
The TPSMA8.2AHM3_B/I has a guaranteed breakdown voltage (VBR) range of 7.79 V (min) to 8.61 V (max) at 10 mA test current, with 8.20 V nominal. This ±5% tolerance is verified per the Vishay datasheet Document Number 88405, Revision 23-Jan-2024, Table on page 2. The TPSMA8.2AHM3_B/I maintains this specification across its full operating temperature range.
Is TPSMA8.2AHM3_B/I suitable for bidirectional transient protection?
No, TPSMA8.2AHM3_B/I is strictly unidirectional and only clamps positive-going transients relative to its cathode. For bidirectional protection, a separate device such as the SMBJ8.0CA or dual-diode array would be required. The TPSMA8.2AHM3_B/I datasheet explicitly states "Available in uni-directional polarity only" on page 1, and its electrical characteristics table confirms single-polarity test conditions.
Does TPSMA8.2AHM3_B/I require derating at elevated ambient temperatures?
Yes, TPSMA8.2AHM3_B/I must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power (PPPM) decreases linearly to zero at +185 °C junction temperature. The TPSMA8.2AHM3_B/I's thermal resistance (RθJA) and mounting pad size directly impact allowable derating - use 0.2" × 0.2" copper pads per terminal to meet published ratings.
What does the "HM3" suffix indicate in TPSMA8.2AHM3_B/I?
The "HM3" suffix in TPSMA8.2AHM3_B/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information (page 3), HM3 parts meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability. This distinguishes TPSMA8.2AHM3_B/I from HE3 (RoHS/AEC-Q101 but not halogen-free) and standard non-qualified variants.
Can TPSMA8.2AHM3_B/I be used in place of TPSMA8.2AHE3_B/I?
TPSMA8.2AHM3_B/I and TPSMA8.2AHE3_B/I share identical electrical specifications and SMA package, but differ in material content: HM3 is halogen-free while HE3 is not. Both are AEC-Q101 qualified and MSL Level 1. The TPSMA8.2AHM3_B/I may replace TPSMA8.2AHE3_B/I in applications requiring halogen-free compliance, provided mechanical layout and sourcing requirements align.
TPSMA8.2AHM3_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:
- 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/I FAQ
1.How can I place an order for TPSMA8.2AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA8.2AHM3_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 TPSMA8.2AHM3_B/I reliable?
The price and inventory of TPSMA8.2AHM3_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 TPSMA8.2AHM3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA8.2AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA8.2AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA8.2AHM3_B/I?
TPSMA8.2AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA8.2AHM3_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 TPSMA8.2AHM3_B/I?
For technical support, including TPSMA8.2AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA8.2AHM3_B/I requirements.
6.How does Aetrix verify that TPSMA8.2AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA8.2AHM3_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 TPSMA8.2AHM3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA8.2AHM3_B/I?
All TPSMA8.2AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA8.2AHM3_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 TPSMA8.2AHM3_B/I part is unused and in its original packaging.
Return procedure for TPSMA8.2AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA8.2AHM3_B/I Tags
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