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Vishay General Semiconductor - Diodes Division P6SMB8.2AHM3/H
- Part No.:
- P6SMB8.2AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2AHM3/H.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,622
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Product details
Overview
P6SMB8.2AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping transient overvoltages on power and signal lines. It features 8.2 V standoff voltage (VWM), 12.1 V maximum clamping voltage at 49.6 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB8.2AHM3/H datasheet, P6SMB8.2AHM3/H pinout, P6SMB8.2AHM3/H application, or P6SMB8.2AHM3/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and thermal resistance of 100 °C/W junction-to-ambient under standard PCB mounting.
Technical Context
This TVS diode operates as a voltage-clamping protection device that conducts above its breakdown voltage (7.79–8.61 V at 10 mA) to shunt surge energy away from sensitive downstream circuitry. Its glass-passivated junction ensures stable leakage performance (<200 μA at 7.02 V) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching transients.
The P6SMB8.2AHM3/H is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 (peak reflow 260 °C). Its SMB package enables automated placement and provides low incremental surge resistance, supporting repetitive surge duty cycles up to 0.01 % with minimal voltage overshoot during clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.02 V - maximum reverse voltage before significant conduction; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 7.79–8.61 V at 10 mA - precise voltage at which avalanche conduction begins; ensures predictable turn-on behavior |
| VC (Clamping Voltage) | 12.1 V at 49.6 A IPPM - peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream ICs |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy absorption capability with 10/1000 μs waveform; supports robust surge immunity |
| ID (Reverse Leakage) | <200 μA at VWM - low leakage preserves system efficiency and prevents false triggering in high-impedance circuits |
| TJ max. | 150 °C - maximum allowable junction temperature; enables operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air on standard 0.2" × 0.2" copper pads; informs heatsinking requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current toward ground when voltage exceeds VBR |
| Anode (unbanded end) | Reference node | Typically connected to system ground or lower-potential rail; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable electrical parameters across temperature and long-term reliability in harsh environments |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without degradation |
| MSL Level 1 rating | Supports lead-free reflow soldering at 260 °C peak without moisture-induced failure |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during transients, reducing risk of latch-up in 5 V logic systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between sensor signal line and ground, activated within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤12.1 V, preventing damage to 5 V tolerant ADC inputs and ensuring signal integrity during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input lines, conducting only during >7.02 V transients while remaining invisible to normal operation. Use Value: Enables reliable operation in factory environments with frequent cable hot-plugging and inductive load switching, meeting IEC 61000-4-4 Level 3 immunity. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and smart home devices. IC Role / Device Role / Timing Role: Clamping element across DC output rails to prevent overvoltage propagation to downstream PMICs and USB controllers. Use Value: Absorbs up to 600 W surge energy without failure, maintaining output regulation during transient faults and extending adapter lifetime. |
Use Scenario: Surge protection on Ethernet PHY interface lines and auxiliary power feeds in VoIP phones and base stations. IC Role / Device Role / Timing Role: Fast-acting shunt device on 3.3 V or 5 V bias rails feeding PHY ICs, triggered before internal ESD structures activate. Use Value: Reduces clamping voltage by ~30 % versus standard Zener diodes, lowering stress on 3.3 V PHY I/O cells during lightning-induced surges. |
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 | 8.0 V VWM, 12.0 V VC at 49.2 A, same SMB package but non-AEC-Q101, commercial-grade M3 suffix only | Lacks automotive qualification; suitable for consumer/industrial use where AEC-Q101 is not mandated | Select SMAJ8.0A when cost sensitivity outweighs automotive reliability requirements and AEC-Q101 documentation is unnecessary |
| 1.5SMC8.2A | 8.2 V VWM, 12.3 V VC at 48.8 A, larger SMC (DO-214AB) package, higher thermal mass but incompatible footprint | Requires PCB layout change; better suited for higher-power or thermally constrained designs | Choose 1.5SMC8.2A only if board space allows SMC footprint and higher thermal dissipation (RθJA = 50 °C/W) is required |
Compared with SMAJ8.0A and 1.5SMC8.2A, the P6SMB8.2AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and exact SMB footprint compatibility - making it the sole option for automotive production requiring traceable, qualified TVS protection without layout revision.
Availability
P6SMB8.2AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full AEC-Q101 documentation and halogen-free compliance.
Supply support for P6SMB8.2AHM3/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, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P6SMB Series is engineered for high-reliability transient suppression in demanding environments - targeting automotive, industrial, and communications applications where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the clamping voltage of the P6SMB8.2AHM3/H under maximum surge conditions?
The P6SMB8.2AHM3/H has a maximum clamping voltage (VC) of 12.1 V at 49.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the highest voltage the protected circuit will experience during a worst-case transient event. The P6SMB8.2AHM3/H maintains this clamping performance across its specified operating temperature range and after repeated surge exposures, provided derating guidelines in Figure 2 of the datasheet are followed.
Is the P6SMB8.2AHM3/H qualified for automotive applications?
Yes, the P6SMB8.2AHM3/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's P6SMB series datasheet (Document Number 88370, Revision 09-Jan-2024). The HM3 designation indicates halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, humidity bias, and accelerated life testing - making the P6SMB8.2AHM3/H suitable for under-hood and chassis-mounted automotive electronics.
What does the "H" in P6SMB8.2AHM3/H signify in the ordering code?
The "H" in P6SMB8.2AHM3/H denotes the packaging configuration: 7-inch diameter plastic tape and reel, with 750 units per reel. This is defined in the Ordering Information table on page 3 of the Vishay P6SMB datasheet. The "HM3" portion confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification, while the "H" suffix specifically identifies the reel size and quantity - critical for SMT line setup and inventory planning for the P6SMB8.2AHM3/H.
How does the P6SMB8.2AHM3/H compare to bidirectional TVS diodes in the same series?
The P6SMB8.2AHM3/H is unidirectional, meaning it functions like a Zener diode with cathode/anode polarity and blocks voltage in one direction only. Bidirectional variants (e.g., P6SMB8.2CA) have symmetrical clamping in both directions and no polarity marking. The P6SMB8.2AHM3/H is selected when protecting DC lines where polarity is fixed - such as 5 V or 12 V rails - offering tighter VWM tolerance and lower leakage than equivalent bidirectional parts, which sacrifice some precision for dual-direction capability.
What is the maximum junction temperature rating for the P6SMB8.2AHM3/H?
The P6SMB8.2AHM3/H has a maximum junction temperature (TJ max.) of +150 °C, as specified in the Maximum Ratings table of the Vishay datasheet. This rating enables continuous operation in high-temperature environments such as automotive engine compartments or enclosed industrial enclosures. Derating of peak pulse power begins above TA = 25 °C per Figure 2, and the P6SMB8.2AHM3/H must be mounted on the recommended 0.2" × 0.2" copper pads to achieve thermal performance consistent with the 100 °C/W RθJA specification.
P6SMB8.2AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB8.2AHM3/H FAQ
1.How can I place an order for P6SMB8.2AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2AHM3/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 P6SMB8.2AHM3/H reliable?
The price and inventory of P6SMB8.2AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2AHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB8.2AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2AHM3/H?
P6SMB8.2AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2AHM3/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 P6SMB8.2AHM3/H?
For technical support, including P6SMB8.2AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2AHM3/H requirements.
6.How does Aetrix verify that P6SMB8.2AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2AHM3/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 P6SMB8.2AHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB8.2AHM3/H?
All P6SMB8.2AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2AHM3/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 P6SMB8.2AHM3/H part is unused and in its original packaging.
Return procedure for P6SMB8.2AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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