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Vishay General Semiconductor - Diodes Division P6SMB56AHM3_B/H
- Part No.:
- P6SMB56AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHM3_B/H.pdf
- Description:
- 600W,56V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,968
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Product details
Overview
P6SMB56AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 47.8 V maximum standoff voltage (VWM), 7.8 A peak pulse current (IPPM) under 10/1000 μs waveform, and 600 W peak pulse power rating - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P6SMB56AHM3_B/H datasheet, P6SMB56AHM3_B/H pinout, P6SMB56AHM3_B/H application, or P6SMB56AHM3_B/H equivalent, key selection criteria include clamping voltage (VC = 77.0 V at IPPM), AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, and halogen-free RoHS-compliant construction per HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The P6SMB56AHM3_B/H is rated for 150 °C maximum junction temperature and exhibits 0.103 %/°C temperature coefficient of VBR, enabling predictable clamping behavior across automotive-grade thermal ranges. Its 20 °C/W junction-to-lead thermal resistance supports localized heat dissipation during repetitive surge events when mounted on recommended 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at IT = 1.0 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 77.0 V at 7.8 A (10/1000 μs) - clamping voltage limiting stress on protected ICs or MOSFETs |
| PPPM | 600 W - peak transient power handling capability under standardized surge waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| AEC-Q101 | Qualified - validated for automotive electronics reliability including temperature cycling, HTRB, and ESD |
| Package | SMB (DO-214AA) - surface-mount outline with 0.220" x 0.130" footprint, compatible with automated placement |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 48 V rail or CAN bus); band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a without degradation under 0.01% duty cycle |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 μA) across temperature and lifetime |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for Tier 1 automotive and industrial OEMs |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or baking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Clamping |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs against load dump and inductive switching spikes per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients above 47.8 V. Use Value: Limits clamped voltage to 77.0 V during 7.8 A surges, preventing damage to 60 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Fast-response clamping device on sensor signal lines exposed to ESD and cable discharge events. Use Value: Sub-1 ns response time and 77.0 V clamping protect 3.3 V or 5 V ADC inputs from >1 kV contact ESD per IEC 61000-4-2. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side transient suppression on PoE-powered Ethernet switch ports subject to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 57 V nominal PoE output rails to absorb induced common-mode transients. Use Value: 600 W rating and 77.0 V clamping ensure compatibility with IEEE 802.3bt surge immunity requirements. |
Use Scenario: Input-stage overvoltage protection in universal-input AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary-side unidirectional suppressor across bulk capacitor to absorb MOV failure transients. Use Value: 47.8 V VWM allows operation with 42 V peak rectified voltage; 77.0 V VC prevents secondary-side regulator latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/52 | Same VBR range (55.1–60.7 V), but lower PPPM = 400 W and non-AEC-Q101 commercial grade | Limited to non-automotive industrial or consumer use due to lack of automotive qualification | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is ≤400 W |
| 1.5SMC56A | Same VBR (53.2–58.8 V) and PPPM = 1500 W, but larger SMC (DO-214AB) package and no AEC-Q101 option | Requires PCB layout change; suited for higher-energy industrial transients where space permits | Choose only if system-level surge testing exceeds 600 W and board area allows SMC footprint |
Compared with SMAJ58A-E3/52 and 1.5SMC56A, the P6SMB56AHM3_B/H uniquely combines AEC-Q101 qualification, SMB footprint compactness, and 600 W clamping performance - making it the optimal choice for space-constrained automotive modules requiring production-grade reliability.
Availability
P6SMB56AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB56AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping behavior and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of P6SMB56AHM3_B/H at its rated peak pulse current?
The P6SMB56AHM3_B/H has a maximum clamping voltage (VC) of 77.0 V when subjected to its rated peak pulse current of 7.8 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is P6SMB56AHM3_B/H qualified for automotive applications?
Yes, P6SMB56AHM3_B/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making P6SMB56AHM3_B/H suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is essential.
What does the "_B/H" suffix in P6SMB56AHM3_B/H indicate?
The "_B" denotes AEC-Q101 qualification for the P6SMB56A variant (applicable to VWM ≤ 220 V), while "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. The "HM3" portion confirms halogen-free, RoHS-compliant construction. Together, P6SMB56AHM3_B/H identifies a fully automotive-qualified, environmentally compliant, and production-ready TVS diode in standard surface-mount packaging.
How does the thermal resistance of P6SMB56AHM3_B/H affect its surge handling capability?
P6SMB56AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. At elevated ambient temperatures, this necessitates derating of its 600 W peak pulse power capability - for example, at TA = 85 °C, maximum allowable PPPM drops to ~360 W per Vishay's Fig. 2 derating curve. Proper PCB copper pad design (0.2" × 0.2") is essential to maintain specified thermal performance and avoid junction overheating during repetitive surges.
Can P6SMB56AHM3_B/H be used in bidirectional configurations?
No, P6SMB56AHM3_B/H is a unidirectional TVS diode, indicated by the "A" suffix (not "CA") and presence of a cathode band marking. Bidirectional operation requires a part with "CA" suffix (e.g., P6SMB56CA). Using P6SMB56AHM3_B/H in reverse-biased configurations risks permanent breakdown or failure, as its internal structure is optimized for forward-grounded (anode-to-ground) clamping only.
P6SMB56AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56AHM3_B/H FAQ
1.How can I place an order for P6SMB56AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHM3_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 P6SMB56AHM3_B/H reliable?
The price and inventory of P6SMB56AHM3_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 P6SMB56AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB56AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHM3_B/H?
P6SMB56AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHM3_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 P6SMB56AHM3_B/H?
For technical support, including P6SMB56AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB56AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHM3_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 P6SMB56AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB56AHM3_B/H?
All P6SMB56AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHM3_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 P6SMB56AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB56AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHM3_B/H Tags
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