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Vishay General Semiconductor - Diodes Division P6SMB47A-E3/52
- Part No.:
- P6SMB47A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47A-E3/52.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:516
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Product details
Overview
P6SMB47A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 47 V breakdown voltage (VBR min = 44.7 V, max = 49.4 V), 40.2 V stand-off voltage (VWM), and clamps at ≤64.8 V under 9.3 A peak pulse current (IPPM) with a 10/1000 μs waveform.
For engineers reviewing the P6SMB47A-E3/52 datasheet, P6SMB47A-E3/52 pinout, P6SMB47A-E3/52 application, or P6SMB47A-E3/52 equivalent, this device serves as a primary overvoltage protection component for DC power rails, I/O lines, and sensor interfaces in automotive, industrial, and telecom systems where robust surge immunity and RoHS-compliant packaging are required.
Technical Context
The P6SMB47A-E3/52 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 μs double-exponential pulse, delivering 600 W peak pulse power at TA = 25 °C with 0.01 % duty cycle repeatability.
Thermal performance is characterized by RθJA = 100 °C/W (junction-to-ambient, on minimum pad layout) and RθJL = 20 °C/W (junction-to-lead), supporting reliable operation up to TJ = +150 °C. The cathode band denotes polarity, and the matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 44.7 V min to 49.4 V max at IT = 1.0 mA - defines minimum voltage at which avalanche conduction begins reliably |
| Stand-off Voltage VWM | 40.2 V - maximum continuous reverse operating voltage before significant leakage occurs |
| Clamping Voltage VC | ≤64.8 V at IPPM = 9.3 A (10/1000 μs) - limits transient voltage seen by protected circuitry |
| Peak Pulse Power PPPM | 600 W - surge energy handling capacity under standardized transient waveform |
| Maximum Leakage ID | 1.0 μA at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Operating Temperature | -65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly; 0.220" × 0.130" body size |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by band on body; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to higher-potential side (e.g., VCC rail or signal line); defines clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating in standard PCB layouts |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 (J-STD-020), 260 °C peak reflow | Supports single-pass lead-free reflow soldering without moisture sensitivity concerns |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and REACH SVHC requirements for global market access |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or inductive kickback) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery-supplied control modules from load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp transients above 40.2 V. Use Value: Limits voltage to ≤64.8 V during 9.3 A surge, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLCs from cable-induced surges. IC Role / Device Role / Timing Role: TVS connected across signal and ground to suppress fast transients coupled via long I/O cables. Use Value: Sub-1 ns response ensures clamping before sensitive ADC inputs saturate or latch-up occurs. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered network switches against AC/DC adapter transients and lightning-induced surges on 54 V input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus upstream of PMIC and Ethernet PHY. Use Value: 600 W rating handles repetitive surges per Telcordia GR-1089-CORE without degradation over 10+ years. |
Use Scenario: Adding surge resilience to USB VBUS lines in smart home hubs exposed to accidental AC adapter misconnections. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND to absorb 8/20 μs surges exceeding 5 V. Use Value: 1.0 μA leakage at 40.2 V preserves battery life in always-on devices while maintaining USB 2.0 signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A (Bourns) | Same SMB package, identical VWM = 40.2 V and VC = 64.8 V, but rated for 400 W PPPM (vs. 600 W) | Limited to lower-energy transients; not recommended for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when cost sensitivity outweighs peak surge margin and layout space allows parallel devices |
| 1.5SMC47A (ON Semiconductor) | Same electrical specs and SMB package, but MSL Level 2 (vs. Level 1) and no AEC-Q101 variant available in E3 configuration | Requires moisture baking prior to reflow; unsuitable for automotive production without qualification | Prefer for non-automotive industrial use where extended shelf life and simplified handling are priorities |
Compared with SMAJ47A and 1.5SMC47A, P6SMB47A-E3/52 delivers superior 600 W surge capability and MSL Level 1 compatibility out-of-box, making it the optimal choice for high-reliability automotive and telecom power rail protection where board space and reflow process simplicity are critical.
Availability
P6SMB47A-E3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB power delivery systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB47A-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in compact surface-mount form factors, engineered for automotive, industrial, and communications infrastructure where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the maximum clamping voltage of P6SMB47A-E3/52 under a 10/1000 μs surge?
The P6SMB47A-E3/52 clamps to a maximum of 64.8 V when subjected to its rated peak pulse current of 9.3 A with a 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The P6SMB47A-E3/52 maintains this clamping performance across its full operating temperature range, with minor derating above 25 °C per Figure 2 in the datasheet.
Is P6SMB47A-E3/52 suitable for automotive applications?
Yes, P6SMB47A-E3/52 is RoHS-compliant and qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes (e.g., P6SMB47AHE3_B). The base P6SMB47A-E3/52 is commercial-grade but shares identical electrical and thermal characteristics; many Tier 1 suppliers deploy it in non-safety-critical automotive subsystems after internal qualification. For certified automotive use, specify the HE3 variant.
What is the leakage current specification for P6SMB47A-E3/52 at its stand-off voltage?
The P6SMB47A-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage of 40.2 V and TA = 25 °C. This ultra-low leakage ensures minimal power loss in battery-backed or high-impedance sensing circuits, preserving signal fidelity and extending operational lifetime in always-on applications.
Does P6SMB47A-E3/52 have a bidirectional version?
Yes - the bidirectional counterpart is P6SMB47CA-E3/52, which provides symmetrical clamping in both directions and is marked "47C". It shares identical VBR, VC, and PPPM ratings but lacks polarity marking and is used where AC signal lines or differential buses require protection without polarity constraints.
What is the thermal resistance from junction to ambient for P6SMB47A-E3/52?
The P6SMB47A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating maximum power dissipation at elevated ambient temperatures using the derating curve in Figure 2 of the datasheet.
P6SMB47A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
P6SMB47A-E3/52 FAQ
1.How can I place an order for P6SMB47A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47A-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 P6SMB47A-E3/52 reliable?
The price and inventory of P6SMB47A-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 P6SMB47A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB47A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47A-E3/52?
P6SMB47A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47A-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 P6SMB47A-E3/52?
For technical support, including P6SMB47A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47A-E3/52 requirements.
6.How does Aetrix verify that P6SMB47A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB47A-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 P6SMB47A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB47A-E3/52?
All P6SMB47A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47A-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 P6SMB47A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB47A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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