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Vishay General Semiconductor - Diodes Division P6SMB56AHM3/H
- Part No.:
- P6SMB56AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHM3/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,887
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Product details
Overview
P6SMB56AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 56 V breakdown voltage (VBR min/max = 53.2–58.8 V), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB56AHM3/H datasheet, P6SMB56AHM3/H pinout, P6SMB56AHM3/H application, or P6SMB56AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates as a fast-acting shunt protector: when reverse voltage exceeds VWM = 47.8 V, it transitions from high-impedance blocking to low-impedance clamping within <1 ps, limiting transient energy to downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device is rated for 150 °C maximum junction temperature and supports 100 A non-repetitive forward surge current (IFSM) - critical for handling inductive kickback in automotive and industrial switching applications. Its MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility enable robust automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage detection |
| 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) - actual worst-case voltage seen by protected circuit during surge |
| PPPM | 600 W - peak transient energy absorption capability without failure under standardized surge waveform |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads, defining derating requirements |
| TJ max | +150 °C - maximum allowable junction temperature for sustained operation and surge recovery |
| IFSM | 100 A - single half-sine surge current rating (8.3 ms), supporting protection of high-current power stages |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to protected line ground or low-side reference; completes clamping loop during transient |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 48 V rail); conducts when VAK > VBR, diverting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Halogen-free & RoHS-compliant | Meets environmental compliance for modern industrial and automotive electronics manufacturing |
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without preconditioning or baking |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Suppressing load dump and alternator transients on 48 V battery-fed ECUs and ADAS modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp spikes up to ±100 V. Use Value: Limits voltage to ≤77.0 V during 600 W surges, preventing damage to 60 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff device mounted at connector interface to absorb inductive switch-off energy from solenoids and relays. Use Value: Clamps 1 kV/500 A transients (IEC 61000-4-5) while maintaining <1 μA leakage at 24 V nominal, preserving input logic integrity. |
| Telecom DC Power Feeds | Sensor Signal Line Protection |
Use Scenario: Safeguarding -48 V telecom rectifier outputs and distribution boards against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on bulk power bus, coordinated with secondary-stage MOVs and filters. Use Value: Withstands repetitive 10/1000 μs surges at 0.01% duty cycle, enabling long-term deployment in central office environments. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional suppressor placed adjacent to ADC input pins. Use Value: Provides sub-nanosecond response with <77.0 V clamping, preventing latch-up or parametric shift in precision signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ56A-E3/5B | Same SMB package, 56 V VBR, but lower PPPM = 400 W and no AEC-Q101 qualification | Limited to commercial-grade industrial use; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary |
| 1.5SMC56A | Higher-power SMC package (same VBR), PPPM = 1500 W, RθJA ≈ 30 °C/W, larger footprint | Requires more PCB area and thermal relief; suited for high-energy surges where SMB thermal limits are exceeded | Choose when system-level surge testing exceeds 600 W or junction temperature rise must be minimized under sustained stress |
Compared with SMAJ56A-E3/5B and 1.5SMC56A, P6SMB56AHM3/H delivers automotive-grade reliability in the smallest qualified SMB footprint while balancing 600 W surge capacity with manufacturability - making it optimal for space-constrained, high-reliability 48 V systems.
Availability
P6SMB56AHM3/H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial PLC input conditioning, and telecom DC feed safeguarding requiring stable component supply across multi-year production cycles.
Supply support for P6SMB56AHM3/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 targets high-volume transient suppression in automotive, industrial, and telecom infrastructure - engineered for AEC-Q101 compliance, automated assembly, and consistent clamping behavior across temperature and life cycle.
FAQ
What is the clamping voltage of P6SMB56AHM3/H under a 10/1000 μs surge?
The P6SMB56AHM3/H has a maximum clamping voltage (VC) of 77.0 V at 7.8 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 such a transient. The P6SMB56AHM3/H maintains this clamping performance across its specified operating temperature range and after repeated surge events, provided derating per Fig. 2 is observed.
Is P6SMB56AHM3/H qualified for automotive applications?
Yes, P6SMB56AHM3/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 temperature cycling, high-temperature reverse bias, and surge endurance - validating its suitability for under-hood and body-control module applications. The P6SMB56AHM3/H meets all required failure rate and reliability thresholds for automotive electronics.
What does the "HM3" suffix indicate in P6SMB56AHM3/H?
The "HM3" suffix in P6SMB56AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates 7" tape-and-reel packaging (750 units), "M3" confirms halogen-free molding compound and lead finish, and the absence of "B" or "D" means this variant falls within the 6.8–220 V VWM range covered by the _B qualification tier. The P6SMB56AHM3/H is fully compatible with lead-free reflow processes up to 260 °C.
How does P6SMB56AHM3/H compare to bidirectional TVS diodes like P6SMB56CA?
P6SMB56AHM3/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., +48 V rails), offering lower leakage (<1 μA at 47.8 V) and tighter VBR tolerance than bidirectional variants. In contrast, P6SMB56CA provides symmetrical clamping for AC or floating lines but exhibits higher leakage and dual VBR thresholds. The P6SMB56AHM3/H cannot replace P6SMB56CA in AC-coupled circuits without redesigning grounding and polarity assumptions.
What is the thermal resistance of P6SMB56AHM3/H, and how does it affect layout?
P6SMB56AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal copper area; increasing pad size or adding internal ground planes reduces RθJA. For reliable operation at full 600 W surge rating, PCB layout must follow Vishay's recommended pad dimensions and avoid thermal bottlenecks - otherwise, junction temperature may exceed 150 °C during repetitive events. The P6SMB56AHM3/H datasheet specifies exact mounting guidelines in Section "Mechanical Data".
P6SMB56AHM3/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):
- 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/H FAQ
1.How can I place an order for P6SMB56AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHM3/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/H reliable?
The price and inventory of P6SMB56AHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB56AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHM3/H?
P6SMB56AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHM3/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/H?
For technical support, including P6SMB56AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHM3/H requirements.
6.How does Aetrix verify that P6SMB56AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB56AHM3/H?
All P6SMB56AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB56AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHM3/H Tags
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