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Vishay General Semiconductor - Diodes Division P6SMB56CA-E3/52
- Part No.:
- P6SMB56CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CA-E3/52.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
P6SMB56CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, featuring a 47.8 V standoff voltage (VWM), 53.2–58.8 V breakdown voltage (VBR) at 1 mA, and 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current - designed to protect signal lines and power rails in automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the P6SMB56CA-E3/52 datasheet, P6SMB56CA-E3/52 pinout, P6SMB56CA-E3/52 application, or P6SMB56CA-E3/52 equivalent, key selection criteria include bidirectional surge immunity, 600 W 10/1000 μs peak pulse power rating, low incremental surge resistance, AEC-Q101 qualification eligibility, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior for positive and negative transients. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while the SMB package supports MSL Level 1 handling and 260 °C lead-free reflow.
The device sustains repetitive 10/1000 μs surges at 0.01% duty cycle with no degradation, and its thermal resistance (RθJA = 100 °C/W) enables reliable operation up to TJ = 150 °C when mounted per recommended pad layout - critical for under-hood automotive and high-temperature industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47.8 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 53.2–58.8 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during transients |
| VC (Clamping) | 77.0 V at 7.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 μs waveform; validates robustness against lightning/ESD events |
| IPPM | 7.8 A - Maximum non-repetitive peak pulse current supported without failure |
| TJ max. | 150 °C - Maximum junction temperature enabling use in high-ambient environments like engine control units |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads compliant with J-STD-002 |
Pinout & Package
Package: SMB (DO-214AA), molded case meeting UL 94 V-0 flammability rating; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking - both terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical bidirectional avalanche structure - either terminal serves as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional protection | Enables single-device suppression of both positive and negative transients - eliminates need for dual-diode configurations in differential lines |
| 600 W peak pulse power | Validated under 10/1000 μs waveform at 0.01% duty cycle - meets IEC 61000-4-5 Level 4 surge immunity requirements |
| Glass passivated junction | Ensures stable VBR over time and temperature, with <1.0 μA leakage at VWM, reducing standby power loss in battery-powered systems |
| MSL Level 1 rating | Supports unlimited floor life and 260 °C peak reflow profile - compatible with standard lead-free SMT processes without baking |
| AEC-Q101 qualification path | Base part P6SMB56CAHE3_B/H or P6SMB56CAHM3_B/H available - enables direct qualification for automotive applications including ADAS sensors |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load-dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp transients before they reach sensitive analog front-end ICs. Use Value: Limits induced voltage to ≤77.0 V during 7.8 A surges, preventing latch-up or permanent damage to 5 V or 3.3 V interface ICs. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring ESD and motor drive coupling noise. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) TVS installed across input terminals to suppress fast-rising transients without affecting loop accuracy. Use Value: Maintains signal integrity with <0.1% error contribution at full-scale current due to minimal VWM derating margin (47.8 V vs. typical 24 V loop supply). |
| Telecom Line Card Protection | Consumer Power Adapter Feedback Path |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE controller ICs against lightning-induced surges on RJ45 ports in enterprise switches. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side data lines, coordinated with gas discharge tube (GDT) on primary side for staged protection. Use Value: Fast response time and 600 W rating enable energy diversion before transient propagates into isolation barrier, preserving SELV compliance. |
Use Scenario: Securing optocoupler feedback paths in AC/DC adapters against output overvoltage events caused by primary-side MOSFET failure. IC Role / Device Role / Timing Role: Bidirectional clamping device across optocoupler input to prevent forward/reverse breakdown during fault conditions. Use Value: Symmetric VC (77.0 V) ensures equal protection regardless of transient polarity, extending optocoupler lifetime and maintaining regulation stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A | Unidirectional; 58 V VWM; 64.4–71.2 V VBR; 93.6 V VC at 6.4 A; same SMB package | Requires separate devices for bidirectional protection; higher clamping voltage increases downstream stress | Select only if unidirectional topology is fixed and lower cost outweighs clamping penalty |
| 1.5KE62CA | Through-hole DO-201 package; 53.6 V VWM; 59.3–65.1 V VBR; 103 V VC at 5.8 A; 1500 W rating | Larger footprint incompatible with dense SMT layouts; higher VC reduces system-level surge margin | Use only when board space allows through-hole mounting and higher clamping voltage is acceptable |
Compared with SMAJ58A and 1.5KE62CA, P6SMB56CA-E3/52 delivers superior bidirectional clamping performance in a compact SMB package, enabling smaller PCB area, lower system-level VC, and simplified layout - especially critical for automotive and industrial edge nodes where space and reliability are constrained.
Availability
P6SMB56CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, telecom line card hardening, and consumer power adapter feedback path safeguarding requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6SMB56CA-E3/52 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets high-energy transient suppression in space-constrained applications, with design emphasis on AEC-Q101 readiness, automated assembly compatibility, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What does the "CA" suffix indicate in P6SMB56CA-E3/52?
The "CA" suffix in P6SMB56CA-E3/52 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB56A), P6SMB56CA-E3/52 has no polarity marking and functions identically regardless of terminal orientation, making it ideal for differential signal lines and AC-coupled circuits where polarity reversal is possible.
Is P6SMB56CA-E3/52 AEC-Q101 qualified?
P6SMB56CA-E3/52 itself is the commercial-grade RoHS-compliant version; however, the AEC-Q101 qualified variant is available as P6SMB56CAHE3_B/H (7" reel) or P6SMB56CAHM3_B/H (13" reel), with "_B" indicating AEC-Q101 qualification for the 6.8 V to 220 V voltage range. These automotive-grade versions undergo additional stress testing per AEC-Q101 standards and are marked with revised ordering codes - P6SMB56CA-E3/52 is not qualified but serves as the base platform for those qualified derivatives.
What is the maximum clamping voltage of P6SMB56CA-E3/52 and how is it measured?
The maximum clamping voltage (VC) of P6SMB56CA-E3/52 is 77.0 V, measured at a peak pulse current (IPPM) of 7.8 A using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the highest voltage the device allows across its terminals during a surge event - a critical parameter for ensuring downstream ICs remain within their absolute maximum ratings during transient exposure.
Can P6SMB56CA-E3/52 be used in place of P6SMB56A?
No - P6SMB56CA-E3/52 and P6SMB56A are functionally distinct: the former is bidirectional, the latter unidirectional. Substituting P6SMB56CA-E3/52 for P6SMB56A introduces unnecessary conduction during normal forward-biased operation and may compromise circuit functionality in DC-biased applications. Conversely, replacing P6SMB56CA-E3/52 with P6SMB56A leaves negative transients unprotected. Always match the CA (bidirectional) or A (unidirectional) suffix to the system's polarity requirements.
What PCB layout guidance applies to P6SMB56CA-E3/52 for optimal surge performance?
For optimal surge performance, mount P6SMB56CA-E3/52 using the manufacturer-recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. Minimize trace length between the TVS and protected node, avoid vias in the current path, and ensure solid ground plane connection to reduce inductance - doing so maintains the specified 77.0 V clamping voltage under 10/1000 μs transients. Smaller pads increase thermal resistance and risk exceeding TJ = 150 °C during repetitive surges.
P6SMB56CA-E3/52 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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 (SMB)
P6SMB56CA-E3/52 FAQ
1.How can I place an order for P6SMB56CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CA-E3/52 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 P6SMB56CA-E3/52 reliable?
The price and inventory of P6SMB56CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB56CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CA-E3/52?
P6SMB56CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CA-E3/52 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 P6SMB56CA-E3/52?
For technical support, including P6SMB56CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB56CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB56CA-E3/52 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 P6SMB56CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB56CA-E3/52?
All P6SMB56CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CA-E3/52, 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 P6SMB56CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB56CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CA-E3/52 Tags
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