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Vishay General Semiconductor - Diodes Division P6SMB56AHM3_A/I
- Part No.:
- P6SMB56AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHM3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,875
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Product details
Overview
P6SMB56AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of sensitive electronics. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power rating with a 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P6SMB56AHM3_A/I datasheet, P6SMB56AHM3_A/I pinout, P6SMB56AHM3_A/I application, or P6SMB56AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package footprint, 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 clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VBR, limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM = 47.8 V) and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
The P6SMB56AHM3_A/I is rated for repetitive 0.01% duty cycle pulses and supports surge currents up to 100 A (IFSM, 8.3 ms half-sine) in unidirectional configuration. Its MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility enable automated SMT assembly without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 47.8 V maximum - ensures no conduction during normal 56 V nominal rail operation |
| Clamping Voltage VC | 77.0 V at 7.8 A IPPM - limits worst-case transient voltage seen by protected IC or MOSFET |
| Peak Pulse Power PPPM | 600 W with 10/1000 μs waveform - sustains high-energy transients like ISO 7637-2 Pulse 1/2a/5a |
| Operating Temperature | -65 °C to +150 °C junction range - supports under-hood automotive and industrial ambient conditions |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint with matte tin-plated leads, J-STD-002 solderable |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive electronic control units per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking on one end. Dimensions: 5.59 mm × 3.30 mm × 2.20 mm (L × W × H). Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Provides low forward voltage drop (VF = 3.5 V at 50 A) during surge conduction |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential rail or ground reference | Defines polarity-sensitive placement - reversal prevents clamping function |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables suppression of high-energy transients (e.g., load dump, inductive kick) without failure |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 μA) across temperature and life cycle |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| MSL Level 1, 260 °C peak | Supports lead-free reflow without baking or special handling in high-volume SMT lines |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial supply chains |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load-dump transients (ISO 16750-2) and alternator ripple in vehicle body electronics. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 12 V supply and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits voltage to ≤77.0 V during 600 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic and transceivers. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Standoff device in parallel with optocoupler input, conducting only during >47.8 V transients. Use Value: Maintains <1.0 μA leakage at 24 V nominal, ensuring clean logic-level detection while clamping to 77.0 V during 1 kV/0.5 kA surges. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Driver Protection |
|
Use Scenario: Guards AC/DC adapter output stages against lightning-induced surges entering via PoE or external power inputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side 48 V bus, coordinated with upstream MOVs and fuses. Use Value: Delivers 600 W pulse handling with 100 °C/W thermal resistance, enabling compact heatsink-free design in enclosed telecom enclosures. |
Use Scenario: Safeguards H-bridge gate drivers and MCU pins from back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Fast-response shunt protector on motor supply rail, placed adjacent to driver IC to minimize inductance. Use Value: Clamps 8.3 ms surge events (IFSM = 100 A) without degradation, preserving driver IC lifetime under repeated motor stall conditions. |
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 (Vishay) | Same SMB package, but 58 V VBR (55.1–60.9 V), 83.0 V VC, non-AEC-Q101, E3 suffix (commercial grade) | Lacks automotive qualification and halogen-free certification; suitable for cost-sensitive industrial designs | Select when AEC-Q101 and halogen-free compliance are not required, and 58 V standoff better matches system margin |
| 1.5SMC56A (ON Semiconductor) | SAME 56 V VBR range, 77 V VC, but SMC (DO-214AB) package - 0.295" × 0.230", larger footprint and higher RθJA | Requires PCB layout change; higher thermal resistance reduces power derating at elevated ambient temperatures | Choose only if existing SMC footprint is fixed and AEC-Q101 is not mandatory; verify thermal performance at 150 °C |
Compared with SMAJ58A-E3/52, P6SMB56AHM3_A/I offers tighter VBR tolerance and automotive qualification; versus 1.5SMC56A, it delivers identical clamping performance in a smaller SMB footprint with superior thermal management and AEC-Q101 validation - critical for space-constrained automotive modules.
Availability
P6SMB56AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB56AHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, EFT, and surge events is mission-critical.
FAQ
What is the exact breakdown voltage range for P6SMB56AHM3_A/I?
The P6SMB56AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 53.2 V to 58.8 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping behavior in 56 V nominal systems and aligns with ISO 16750-2 load-dump immunity requirements. The value is confirmed in Vishay's official datasheet revision 09-Jan-2024 (Document Number: 88370).
Is P6SMB56AHM3_A/I suitable for automotive applications?
Yes, P6SMB56AHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. It is explicitly intended for use in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces where sustained operation from -40 °C to +125 °C ambient is required.
What does the "HM3_A/I" suffix mean in P6SMB56AHM3_A/I?
The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction; "A" indicates the revision level of the device specification; "I" specifies packaging in 13-inch diameter plastic tape and reel (3200 units per reel). This full suffix confirms compliance with automotive environmental and logistics requirements - distinct from commercial-grade E3 or M3 variants.
How does P6SMB56AHM3_A/I compare to bidirectional TVS diodes like P6SMB56CA?
P6SMB56AHM3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, enabling lower leakage (<1.0 μA at 47.8 V) and optimized clamping on DC rails. In contrast, P6SMB56CA is bidirectional with symmetrical clamping in both directions but higher leakage and no polarity marking - making P6SMB56AHM3_A/I preferred for 12 V/24 V/48 V supply rail protection where forward conduction must be avoided.
What is the maximum clamping voltage of P6SMB56AHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB56AHM3_A/I is 77.0 V at a peak pulse current (IPPM) of 7.8 A, tested with a 10/1000 μs waveform. This value is critical for ensuring downstream components - such as 75 V-rated MOSFETs or 5 V/3.3 V logic ICs with external protection - remain within safe operating voltage limits during transient events. It is specified in Table 1 of the Vishay P6SMB datasheet.
P6SMB56AHM3_A/I 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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB56AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHM3_A/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 P6SMB56AHM3_A/I reliable?
The price and inventory of P6SMB56AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB56AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHM3_A/I?
P6SMB56AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHM3_A/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 P6SMB56AHM3_A/I?
For technical support, including P6SMB56AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB56AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHM3_A/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 P6SMB56AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB56AHM3_A/I?
All P6SMB56AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHM3_A/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 P6SMB56AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB56AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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