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Vishay General Semiconductor - Diodes Division P6SMB56A-M3/52
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- Part No.:
- P6SMB56A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56A-M3/52.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,389
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Product details
Overview
P6SMB56A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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 stand-off voltage (VWM), and clamps transients to ≤77.0 V at 7.8 A peak pulse current (IPPM) under 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB56A-M3/52 datasheet, P6SMB56A-M3/52 pinout, P6SMB56A-M3/52 application, or P6SMB56A-M3/52 equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, 600 W peak pulse power rating, and halogen-free RoHS compliance per M3 suffix - critical for AEC-Q101-aligned designs requiring long-term reliability under repetitive surge stress.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, leveraging an avalanche breakdown mechanism to divert transient energy away from downstream ICs. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it supports automated placement and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. The M3 suffix confirms halogen-free, RoHS-compliant construction suitable for commercial and automotive-grade applications where material compliance is mandated.
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 avalanche onset range for predictable clamping behavior |
| 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 clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient power handling capability under standardized surge waveform |
| IFSM | 100 A - single half-sine surge current rating (8.3 ms), relevant for AC line fault protection |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood or industrial enclosures |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, used to calculate safe power derating above 25 °C |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V rail or CAN-H); initiates avalanche when VAK ≥ VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients like ISO 7637-2 Pulse 5a without derating penalties |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes voltage overshoot across protected ICs, preserving margin for 56 V-rated components |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive and industrial environmental mandates without compromising surge performance |
| MSL Level 1, 260 °C peak reflow | Supports lead-free assembly without preconditioning or special handling requirements |
| AEC-Q101 qualified option available | Enables drop-in qualification path via P6SMB56AHM3_B variant for automotive ECUs |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and Hall-effect sensor outputs from load dump and ESD in engine control modules. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller input pin. Use Value: Limits transient voltage to ≤77.0 V while maintaining <1 µA leakage at 47.8 V, ensuring signal integrity and MCU safety. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff protection device mounted directly at connector entry point before signal conditioning stage. Use Value: Absorbs 600 W surges without degradation, preserving analog accuracy and preventing ADC latch-up during factory maintenance events. |
| Telecom Power Supply Rail | Consumer Appliance Motor Drive |
|
Use Scenario: Secondary-side overvoltage suppression on +48 V telecom DC-DC converter outputs feeding Ethernet PHYs. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting transients induced by hot-swap or cable discharge events. Use Value: Clamps within nanoseconds to protect 50 V-rated PHY ICs, with thermal design supported by RθJA = 100 °C/W. |
Use Scenario: Protection of gate drivers and MCU I/O pins in smart washing machine motor inverters subject to back-EMF spikes. IC Role / Device Role / Timing Role: Low-inductance TVS placed adjacent to MOSFET gate driver outputs and feedback sensing nodes. Use Value: Withstands 100 A surge current (IFSM) and maintains stable VBR across -65 °C to +150 °C operating range. |
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 | Same SMB package, but VBR = 64.4–71.4 V, VC = 93.6 V at 6.4 A - higher clamping voltage and lower IPPM | Less suitable for 48 V systems requiring tight clamping margin; better for 60 V nominal rails | Select only if system VMAX > 93.6 V and tighter VWM tolerance is not required |
| 1.5SMC56A | Higher-power SMC package (1500 W), same VBR/VC specs, larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm) | Used where board space allows and higher surge repetition rate is needed | Choose when 600 W is insufficient and thermal mass must be increased without changing circuit topology |
Compared with SMAJ58A and 1.5SMC56A, P6SMB56A-M3/52 delivers optimal balance of compact SMB footprint, precise 56 V clamping, and halogen-free compliance - making it preferred for space-constrained 48 V automotive and industrial modules where layout density and material compliance are co-priorities.
Availability
P6SMB56A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog inputs, telecom power rail safeguarding, and consumer appliance motor drive circuits requiring stable component supply and consistent surge performance across production batches.
Supply support for P6SMB56A-M3/52 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 targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and telecom systems - engineered for automated assembly, thermal robustness, and compliance with evolving environmental standards.
FAQ
What is the breakdown voltage tolerance for P6SMB56A-M3/52?
The P6SMB56A-M3/52 has a specified breakdown voltage range of 53.2 V to 58.8 V at 1.0 mA test current, representing ±5% tolerance around the nominal 56 V rating. This tight VBR window ensures consistent clamping behavior across production lots and enables reliable coordination with downstream overvoltage thresholds in protected circuits.
Is P6SMB56A-M3/52 suitable for automotive applications?
Yes - while the base P6SMB56A-M3/52 is commercial-grade, Vishay offers the AEC-Q101-qualified variant P6SMB56AHM3_B (with "_B" suffix) in the same SMB package. The P6SMB56A-M3/52 itself shares identical electrical and thermal characteristics, making it suitable for non-safety-critical automotive subsystems where full qualification is not mandated but performance and reliability are essential.
What does the "M3" suffix indicate on P6SMB56A-M3/52?
The "M3" suffix on P6SMB56A-M3/52 denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-020 moisture sensitivity level 1 and JESD201 Class 2 whisker resistance requirements. It confirms compliance with modern environmental regulations without sacrificing surge capability or thermal performance compared to legacy E3-suffix variants.
How is the clamping voltage of P6SMB56A-M3/52 measured and what does it mean for circuit design?
The clamping voltage (VC = 77.0 V) is measured at 7.8 A peak pulse current using the standardized 10/1000 µs double-exponential waveform. For circuit design, this value represents the maximum voltage imposed on the protected node during a worst-case transient - requiring that all downstream components have voltage ratings exceeding 77.0 V to avoid damage or malfunction.
Can P6SMB56A-M3/52 replace older P6SMB56A-E3/52 parts in existing designs?
Yes - P6SMB56A-M3/52 is a direct form-fit-function replacement for P6SMB56A-E3/52, sharing identical electrical specifications, SMB (DO-214AA) package dimensions, pinout, and thermal characteristics. The only difference is the halogen-free material set (M3) versus standard RoHS (E3), with no impact on solderability, reliability, or surge performance in validated layouts.
P6SMB56A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB56A-M3/52 FAQ
1.How can I place an order for P6SMB56A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56A-M3/52 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 P6SMB56A-M3/52 reliable?
The price and inventory of P6SMB56A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB56A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56A-M3/52?
P6SMB56A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56A-M3/52 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 P6SMB56A-M3/52?
For technical support, including P6SMB56A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56A-M3/52 requirements.
6.How does Aetrix verify that P6SMB56A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB56A-M3/52 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 P6SMB56A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB56A-M3/52?
All P6SMB56A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56A-M3/52, 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 P6SMB56A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB56A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56A-M3/52 Tags
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