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Vishay General Semiconductor - Diodes Division P6SMB39A-M3/52
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- Part No.:
- P6SMB39A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39A-M3/52.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,883
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Product details
Overview
P6SMB39A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of sensitive electronics. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA test current, and clamps transients to ≤53.9 V at 11.1 A peak pulse current (IPPM) under 10/1000 μs waveform - ideal for safeguarding MOSFETs, ICs, and sensor signal lines in industrial power supplies and automotive control modules.
For engineers reviewing the P6SMB39A-M3/52 datasheet, P6SMB39A-M3/52 pinout, P6SMB39A-M3/52 application, or P6SMB39A-M3/52 equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package details, clamping performance context, real-world use cases in power rail and signal line protection, and two validated alternative parts with functional and packaging distinctions.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior. Its 600 W peak pulse power rating (10/1000 μs) and low incremental surge resistance enable effective suppression of inductive switching spikes and ESD events without latch-up or thermal runaway.
Thermal design is supported by a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak. The halogen-free, RoHS-compliant M3 suffix confirms compliance with environmental and reliability standards for commercial-grade applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33.3 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 37.1–41.0 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transient overvoltage. |
| VC (Clamping Voltage) | ≤53.9 V at IPPM = 11.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; enables single-event protection without degradation. |
| ID (Max Reverse Leakage) | 1.0 μA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline with 0.205" × 0.220" footprint; optimized for automated placement and board space efficiency. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; forms forward-biased path during positive surges relative to cathode. |
| Cathode | Avalanche clamping terminal (marked with band) | Connected to higher-potential side (e.g., VCC rail or signal line); initiates controlled breakdown when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients common in motor drives and relay coils without derating at 0.01% duty cycle. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage across temperature and humidity stress, critical for field-reliability in industrial deployments. |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow without baking; eliminates production delays and handling overhead for high-volume SMT assembly. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets global environmental regulations and end-product sustainability requirements without compromising electrical or thermal performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for CMOS and analog front-ends. |
Applications
| Industrial Motor Control | Automotive Body Control Module |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from solenoid valves and BLDC motor phase switching. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between driver output and ground, absorbing negative-going transients while remaining transparent during normal operation. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces by limiting transient voltage to ≤53.9 V, well below absolute maximum ratings. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., ambient temperature, door position) from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on power rail (VBAT) and signal lines, activated only during >33.3 V events to avoid interference with 12 V nominal operation. Use Value: Maintains system uptime by preventing false resets or communication errors caused by sub-100 ns transients up to 600 W energy. |
| Telecom Power Supply | Consumer Appliance Control Board |
Use Scenario: Input-stage protection for AC/DC adapters and DC/DC converters exposed to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Primary-side TVS connected anode-to-ground, clamping positive transients on +48 V or +24 V rails before they reach regulation circuitry. Use Value: Extends mean time between failures (MTBF) by absorbing repetitive 10/1000 μs pulses without parameter drift or catastrophic failure. |
Use Scenario: Signal line protection for touch panel controllers and display interface lines (e.g., I²C, UART) in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed directly at connector entry point to shunt ESD and contact discharge. Use Value: Preserves signal fidelity and prevents false touch detection by clamping ±8 kV HBM ESD events to <54 V within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/52 (Vishay) | Lower PPPM (400 W), same SMB package, VWM = 36 V, VC = 58.1 V at 6.5 A | Reduced surge energy handling; suitable for lower-risk consumer-grade applications with less aggressive transients | Select when cost sensitivity outweighs need for 600 W headroom and tighter clamping (P6SMB39A-M3/52 clamps 4.2 V lower at rated IPPM). |
| 1.5SMC39A (ON Semiconductor) | Same VWM/VBR/VC specs, but SMC (DO-214AB) package - 0.265" × 0.285" footprint, ~2× larger PCB area | Requires layout revision due to larger pad dimensions and different thermal profile; not drop-in compatible | Choose only if existing design uses SMC footprint or requires higher thermal mass for sustained surge duty cycles beyond 0.01%. |
Compared with SMAJ36A-E3/52 and 1.5SMC39A, P6SMB39A-M3/52 delivers superior 600 W surge capacity in the compact SMB outline while achieving the tightest clamping voltage among 39 V-class TVS diodes - making it optimal for space-constrained, high-reliability industrial and automotive designs where transient energy and board area are critical constraints.
Availability
P6SMB39A-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power supply designs requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.
Supply support for P6SMB39A-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial, automotive, and computing applications.
The P6SMB series was engineered specifically for surface-mount transient suppression in space-constrained, high-surge environments - balancing low-profile packaging, 600 W pulse capability, and AEC-Q101 qualification readiness for mission-critical electronics.
FAQ
What is the clamping voltage of P6SMB39A-M3/52 at its rated peak pulse current?
The P6SMB39A-M3/52 has a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current (IPPM) of 11.1 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C with devices mounted on 0.2" × 0.2" copper pads and represents the upper limit of voltage imposed on protected circuitry during surge events - a key parameter for ensuring downstream ICs remain within their absolute maximum ratings. The P6SMB39A-M3/52 achieves this clamping performance while maintaining low leakage and stable VBR across temperature.
Is P6SMB39A-M3/52 suitable for automotive applications?
P6SMB39A-M3/52 is halogen-free and RoHS-compliant but is not AEC-Q101 qualified in the M3 suffix configuration. For automotive use, Vishay offers the HM3 variant (e.g., P6SMB39AHM3_B/H), which adds AEC-Q101 qualification for stress testing including temperature cycling, HTRB, and ESD. The P6SMB39A-M3/52 remains appropriate for non-safety-critical automotive subsystems like infotainment power rails or cabin sensors where full qualification is not mandated - however, designers must validate reliability under actual vehicle-level environmental profiles. The P6SMB39A-M3/52 shares identical electrical specs with its qualified counterparts except for the qualification status.
How does the SMB package of P6SMB39A-M3/52 compare to SMA or SMC alternatives?
The SMB (DO-214AA) package used by P6SMB39A-M3/52 measures 0.205" × 0.220" - significantly smaller than the SMC (DO-214AB) package (0.265" × 0.285") and more compact than SMA (DO-214AC). This allows higher board density and better compatibility with fine-pitch automated placement equipment. Thermal resistance is higher (RθJA = 100 °C/W) than SMC (typically ~70 °C/W), so the P6SMB39A-M3/52 relies on optimized pad layout rather than bulk thermal mass. Unlike SMA, SMB supports full 600 W rating without derating, making the P6SMB39A-M3/52 a balanced choice for space-limited yet high-energy applications.
What is the meaning of the "/52" suffix in P6SMB39A-M3/52?
The "/52" suffix in P6SMB39A-M3/52 indicates packaging in 7-inch diameter plastic tape and reel, with a standard quantity of 750 units per reel. This format is optimized for high-speed pick-and-place assembly lines and is compatible with industry-standard feeder mechanisms. The "M3" prefix denotes halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance, while the base "P6SMB39A" specifies the 39 V unidirectional TVS variant. No electrical or thermal differences exist between /52 and other reel options (e.g., /5B); the suffix solely defines mechanical packaging and quantity.
Does P6SMB39A-M3/52 have bidirectional capability?
No, P6SMB39A-M3/52 is strictly a unidirectional TVS diode, as indicated by the "A" suffix (versus "CA" for bidirectional variants like P6SMB39CA). It conducts in forward bias like a standard diode and clamps only in reverse bias above VBR - making it suitable for DC power rail protection where polarity is fixed. Bidirectional operation would require symmetrical breakdown in both directions, which the P6SMB39A-M3/52 does not provide. Using P6SMB39A-M3/52 on AC or floating signal lines without polarity awareness risks failure; for such cases, the P6SMB39CA variant must be selected instead.
P6SMB39A-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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39A-M3/52 FAQ
1.How can I place an order for P6SMB39A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39A-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 P6SMB39A-M3/52 reliable?
The price and inventory of P6SMB39A-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 P6SMB39A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB39A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39A-M3/52?
P6SMB39A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39A-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 P6SMB39A-M3/52?
For technical support, including P6SMB39A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39A-M3/52 requirements.
6.How does Aetrix verify that P6SMB39A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB39A-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 P6SMB39A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB39A-M3/52?
All P6SMB39A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39A-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 P6SMB39A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB39A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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