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Vishay General Semiconductor - Diodes Division P6SMB56AHE3_A/H
- Part No.:
- P6SMB56AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHE3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
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Product details
Overview
P6SMB56AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 56 V standoff voltage (VWM = 47.8 V), 77.0 V clamping voltage at 7.8 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive, industrial, and telecom power rails.
For engineers reviewing the P6SMB56AHE3_A/H datasheet, P6SMB56AHE3_A/H pinout, P6SMB56AHE3_A/H application, or P6SMB56AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below its reverse standoff voltage (VWM = 47.8 V) and rapidly transitions to low-impedance conduction above its breakdown voltage (VBR min = 53.2 V, max = 58.8 V at 1 mA). Its response time is sub-nanosecond, enabling suppression of fast-rising transients such as ESD and load dump spikes.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 600 W peak pulse power under 10/1000 μs waveform with 0.01% duty cycle, and sustains 5.0 W steady-state power dissipation at TA = 50 °C. Thermal resistance is 100 °C/W junction-to-ambient and 20 °C/W junction-to-lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47.8 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 53.2–58.8 V at 1 mA - Confirmed avalanche initiation range defining turn-on threshold |
| VC (Clamping) | 77.0 V at IPPM = 7.8 A - Peak voltage seen by protected circuit during 10/1000 μs transient |
| PPPM | 600 W - Surge energy handling capacity per single 10/1000 μs pulse |
| ID (Leakage) | 1.0 μA max at VWM - Minimal reverse leakage ensures negligible standby power loss |
| TJ max | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
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; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensors |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage stress on downstream ICs during transient events |
| MSL level 1 moisture sensitivity | Enables standard reflow without baking or special handling prior to assembly |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity and contamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 40 V for 400 ms. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp overshoots above 47.8 V. Use Value: Limits peak voltage to 77.0 V during 7.8 A surge, preventing damage to 36 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground to suppress <1 ns transients without distorting mV-level signals. Use Value: Sub-1 μA leakage at 47.8 V avoids DC offset errors; fast response preserves signal integrity in 100 kHz bandwidth systems. |
| Telecom DC Power Input Stage | Consumer Device USB Port Surge Guard |
Use Scenario: Safeguarding PoE-powered switches and base stations against lightning-induced surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: 600 W rating handles repeated 10/1000 μs surges per IEC 61000-4-5; 150 °C TJ max supports sealed outdoor enclosures. |
Use Scenario: Adding secondary-level protection to USB Type-A ports in smart speakers and set-top boxes exposed to user-handling ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after common-mode choke to absorb differential-mode ESD pulses. Use Value: 47.8 V VWM avoids false triggering during 5 V USB regulation; SMB footprint enables compact layout near connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ56A-E3/52 | Same VWM (47.8 V), VC = 93.6 V at 6.4 A; lower PPPM (400 W); SMA package (larger footprint) | Lacks AEC-Q101 qualification; higher clamping voltage increases risk to 5 V tolerant interfaces | Select only for cost-sensitive commercial designs where automotive reliability and tight clamping are not required |
| 1.5SMC56A | Same VWM/VC specs; DO-214AB (SMC) package; 1.5 kW PPPM rating; higher thermal mass | Requires larger PCB area; better suited for high-energy industrial mains protection than space-constrained automotive modules | Choose when surge energy exceeds 600 W or board layout allows SMC footprint and enhanced heat dissipation |
Compared with SMAJ56A-E3/52 and 1.5SMC56A, P6SMB56AHE3_A/H offers optimal balance of AEC-Q101 compliance, SMB footprint efficiency, and 77.0 V clamping-critical for protecting modern 3.3 V/5 V automotive MCUs without overdesigning board area or thermal margin.
Availability
P6SMB56AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom DC power input protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB56AHE3_A/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, MOSFETs, and passive components with emphasis on reliability, precision, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications systems, combining AEC-Q101 qualification, robust surge ratings, and standardized SMB packaging for automated manufacturing.
FAQ
What is the maximum clamping voltage of the P6SMB56AHE3_A/H under a 10/1000 μs surge?
The P6SMB56AHE3_A/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 per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB56AHE3_A/H maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB56AHE3_A/H suitable for automotive applications?
Yes, the P6SMB56AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88370. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and ESD-to meet automotive reliability requirements. The P6SMB56AHE3_A/H is routinely deployed in engine control units, body electronics, and ADAS sensor modules where transient immunity and long-term stability are critical.
What does the "A/H" suffix in P6SMB56AHE3_A/H indicate?
The "A" denotes unidirectional polarity, and the "H" specifies the packaging format: 7-inch diameter plastic tape and reel with 750 units per reel. The full suffix "HE3_A/H" confirms RoHS-compliant construction (HE3), unidirectional configuration (A), and tape-and-reel delivery (H). This matches Vishay's ordering information table on page 3 of document 88370, where "H" is explicitly defined as the 7" reel option.
How does the P6SMB56AHE3_A/H compare to bidirectional variants like P6SMB56CA?
The P6SMB56AHE3_A/H is unidirectional and features a cathode band for polarity identification, whereas P6SMB56CA is bidirectional with no marking and symmetrical clamping in both directions. The P6SMB56AHE3_A/H exhibits lower leakage (<1.0 μA at VWM) and is preferred for DC power rail protection, while P6SMB56CA suits AC-coupled or floating signal lines. Their VBR and VC values differ slightly due to test condition variations, and they are not interchangeable without circuit review.
What is the thermal resistance and maximum junction temperature of the P6SMB56AHE3_A/H?
The P6SMB56AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads. Its maximum operating junction temperature is +150 °C, enabling reliable operation in under-hood automotive environments and enclosed industrial enclosures. Derating curves in Figure 2 of datasheet 88370 define safe power limits above 25 °C ambient.
P6SMB56AHE3_A/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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB56AHE3_A/H FAQ
1.How can I place an order for P6SMB56AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHE3_A/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 P6SMB56AHE3_A/H reliable?
The price and inventory of P6SMB56AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB56AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHE3_A/H?
P6SMB56AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHE3_A/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 P6SMB56AHE3_A/H?
For technical support, including P6SMB56AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB56AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHE3_A/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 P6SMB56AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB56AHE3_A/H?
All P6SMB56AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHE3_A/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 P6SMB56AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB56AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHE3_A/H Tags
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