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Vishay General Semiconductor - Diodes Division P6SMB47A-M3/52
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- Part No.:
- P6SMB47A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47A-M3/52.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,280
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Product details
Overview
P6SMB47A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 47 V standoff voltage (VWM = 40.2 V), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, and 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current (IPPM). It delivers 600 W peak pulse power (10/1000 μs waveform) for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and automotive electronics.
For engineers reviewing the P6SMB47A-M3/52 datasheet, P6SMB47A-M3/52 pinout, P6SMB47A-M3/52 application, or P6SMB47A-M3/52 equivalent, this page provides verified electrical parameters, thermal behavior, clamping performance under surge conditions, RoHS-compliant halogen-free construction, and AEC-Q101 qualification path - all critical for ESD/surge protection design validation and BOM selection.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation (leakage < 1.0 μA at VWM), then rapidly avalanches into low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤64.8 V at 9.3 A. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automated assembly on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 100 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 40.2 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 44.7–49.4 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage |
| VC (Clamping Voltage) | 64.8 V at IPPM = 9.3 A - Peak voltage seen by protected circuit during 10/1000 μs transient; determines safe voltage headroom |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; validates robustness vs. IEC 61000-4-5 |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max. | +150 °C - Enables use in under-hood automotive and high-temperature industrial environments without derating |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs minimum pad area (0.2" × 0.2") for safe power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band on case end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or low-side return path; establishes polarity-sensitive clamping direction |
| Cathode | Reverse voltage input / Clamping node | Connected to protected line (e.g., 48 V rail or sensor output); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validated surge handling for IEC 61000-4-5 Level 4 (4 kV) events on 48 V systems without degradation |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift in harsh environments |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets automotive and industrial environmental compliance mandates without compromising surge performance |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream silicon; critical for 5 V or 3.3 V logic interfacing via level-shifted rails |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 48 V supply lines and LIN bus interfaces from load-dump and inductive kickback in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches MCU GPIOs and transceiver ICs. Use Value: Prevents latch-up or gate oxide damage in 40 V-rated microcontrollers during 12 V/48 V system transients. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring surges and relay contact bounce in factory automation PLCs. IC Role / Device Role / Timing Role: Front-end transient suppression for optocoupler input stages and signal conditioning amplifiers. Use Value: Maintains input channel reliability over 100,000+ switching cycles without degradation or false triggering. |
| Telecom Remote Radio Unit (RRU) | Consumer Smart Home Hub Power Rail |
Use Scenario: Shielding DC power feeds and RS-485 control lines in outdoor RRU enclosures exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on 28 V bias rails feeding RF power amplifiers and monitoring ICs. Use Value: Limits transient voltage to <65 V, preserving GaN FET gate integrity and ADC reference stability during sub-μs events. |
Use Scenario: Securing 5 V USB-C PD and 3.3 V SoC supply rails in smart home hubs subjected to ESD and hot-plug transients. IC Role / Device Role / Timing Role: Secondary-level TVS after primary front-end protection, placed adjacent to sensitive PMIC inputs. Use Value: Adds <10 ns response margin beyond primary suppressors, reducing risk of brownout or reset during fast-rising ESD events. |
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-E3/52 | Same VWM (40.2 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without parallel devices | Select when board space is constrained and surge threat level is ≤Level 2; verify thermal margin with reduced pad area |
| 1.5SMC47A | Same VWM/VBR/VC specs, but SMC (DO-214AB) package - 2.5× larger footprint, lower RθJA (60 °C/W), higher IFSM (200 A) | Better thermal handling for repetitive surges; requires more PCB area and may not fit dense layouts | Choose for high-reliability industrial power supplies where sustained surge duty cycle exceeds 0.01 % |
Compared with P6SMB47A-M3/52, SMAJ47A-E3/52 trades peak power and thermal robustness for compactness, while 1.5SMC47A prioritizes thermal endurance and surge repetition tolerance over miniaturization - making P6SMB47A-M3/52 the balanced choice for space-constrained, single-event surge protection in automotive and industrial edge nodes.
Availability
P6SMB47A-M3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, telecom remote radio units, and consumer smart home power rail hardening requiring stable component supply and halogen-free compliance.
Supply support for P6SMB47A-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, ruggedness, and application-specific qualification.
The P6SMB Series targets surface-mount transient suppression in automotive, industrial, and telecom systems - engineered for high pulse power density, AEC-Q101 readiness, and compatibility with automated SMT assembly processes.
FAQ
What is the clamping voltage of P6SMB47A-M3/52 at its rated peak pulse current?
The P6SMB47A-M3/52 has a maximum clamping voltage (VC) of 64.8 V at 9.3 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The P6SMB47A-M3/52 maintains this clamping performance across its full operating temperature range.
Is P6SMB47A-M3/52 qualified for automotive applications?
P6SMB47A-M3/52 itself is halogen-free and RoHS-compliant (M3 suffix), but not AEC-Q101 qualified. However, the P6SMB47A-HM3_B variant - sharing identical electrical specs and SMB package - is AEC-Q101 qualified for automotive use. For automotive designs requiring qualification, specify P6SMB47A-HM3_B/H or P6SMB47A-HM3_B/I; the P6SMB47A-M3/52 remains suitable for industrial and commercial applications demanding the same surge performance.
What is the thermal resistance and recommended pad layout for P6SMB47A-M3/52?
The P6SMB47A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This pad size is mandatory to achieve rated 600 W pulse power and avoid thermal runaway. Reducing pad area increases RθJA and requires derating of IPPM per Figure 2 in the datasheet.
How does the M3 suffix differ from E3 in P6SMB47A-M3/52?
The M3 suffix in P6SMB47A-M3/52 denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance, whereas E3 indicates standard RoHS compliance without halogen-free assurance. Both meet J-STD-002 solderability and MSL Level 1, but P6SMB47A-M3/52 satisfies stricter environmental requirements for automotive and green industrial programs where brominated flame retardants are prohibited.
Can P6SMB47A-M3/52 be used in bidirectional configurations?
No - P6SMB47A-M3/52 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P6SMB47CA). Using P6SMB47A-M3/52 in bidirectional signal lines would leave positive-going transients unprotected. For AC or differential lines, select P6SMB47CA-M3/52 or equivalent bidirectional part with matched VBR symmetry.
P6SMB47A-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):
- 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 (SMBJ)
P6SMB47A-M3/52 FAQ
1.How can I place an order for P6SMB47A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47A-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 P6SMB47A-M3/52 reliable?
The price and inventory of P6SMB47A-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 P6SMB47A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB47A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47A-M3/52?
P6SMB47A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47A-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 P6SMB47A-M3/52?
For technical support, including P6SMB47A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47A-M3/52 requirements.
6.How does Aetrix verify that P6SMB47A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB47A-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 P6SMB47A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB47A-M3/52?
All P6SMB47A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47A-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 P6SMB47A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB47A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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