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Vishay General Semiconductor - Diodes Division P6SMB39A-E3/52
- Part No.:
- P6SMB39A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39A-E3/52.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB39A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB39A-E3/52 datasheet, P6SMB39A-E3/52 pinout, P6SMB39A-E3/52 application, or P6SMB39A-E3/52 equivalent, key selection considerations include its unidirectional polarity, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and suitability for automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 33.3 V and rapidly avalanches above VBR (min 37.1 V) to limit transient overvoltages. Its low incremental surge resistance and fast response time ensure effective suppression of inductive switching spikes and ESD events.
The device uses a glass-passivated silicon junction and is rated for 100 A non-repetitive forward surge current (IFSM) at 8.3 ms half-sine, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W - enabling reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown) | 37.1–41.0 V at IT = 1 mA - Confirmed avalanche onset range for reliable clamping threshold |
| VC (Clamping) | 53.9 V at IPPM = 11.1 A - Peak voltage seen by protected circuit during 600 W transient |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform, 0.01% duty cycle |
| IPPM | 11.1 A - Maximum non-repetitive peak pulse current supported at VC |
| TJ max | 150 °C - Maximum junction temperature enabling use in under-hood automotive and industrial environments |
| RθJA | 100 °C/W - Thermal resistance indicating need for adequate PCB copper area (0.2" × 0.2") for power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality of clamping |
| Cathode | Forward current exit / Clamping node | Connected to higher-potential side (e.g., VCC rail); conducts during overvoltage to shunt energy |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 surge events (e.g., 1 kV/500 A) without failure |
| Glass passivated junction | Ensures stable leakage performance and long-term reliability under thermal cycling and humidity |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility up to 260 °C peak without baking |
| RoHS-compliant, halogen-free option available | Meets environmental compliance requirements for consumer, industrial, and automotive end equipment |
| AEC-Q101 qualification option | Supports automotive-grade deployment where P6SMB39A-E3/52HE3_B variant meets stress test requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 35 V) on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp surges before they reach LDOs and microcontrollers. Use Value: Limits voltage to ≤53.9 V during 11.1 A transients, preventing latch-up or gate oxide damage in downstream ICs. |
Use Scenario: Protecting analog front-end inputs of pressure/temperature sensors exposed to cable discharge and relay switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal lines (e.g., 4–20 mA loop or CAN stub) to absorb sub-µs ESD pulses. Use Value: Fast response (<1 ns) and 1.0 µA max reverse leakage at 33.3 V preserve signal integrity and measurement accuracy. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding AC-DC converter primary-side rectifiers and controllers against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Mounted across bridge rectifier output to clamp differential-mode transients before bulk capacitor and PWM controller. Use Value: 600 W rating handles high-energy 10/1000 µs surges while maintaining <0.1% duty cycle derating margin. |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each differential pair (e.g., TX+/TX−) referenced to chassis ground. Use Value: 33.3 V VWM aligns with 24–48 V PoE voltage rails; 53.9 V clamping prevents PHY overvoltage beyond ABS max ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | Same SMB package, but lower 33 V VWM, 53.3 V VC at 11.3 A; 400 W PPPM | Lower power handling limits use in high-energy surge environments (e.g., automotive load dump) | Select SMAJ33A only when system-level surge testing requires ≤400 W capability and tighter VWM/VC tolerance |
| 1.5SMC39A | Higher-power SMC package (1500 W), same 33.3 V VWM, 53.9 V VC, but larger footprint and 2.5× height | Requires PCB redesign due to DO-214AB (SMC) vs. DO-214AA (SMB) mechanical mismatch | Choose 1.5SMC39A only if surge immunity must exceed 600 W and board space allows larger case |
Compared with SMAJ33A and 1.5SMC39A, P6SMB39A-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and production-ready RoHS compliance - making it preferred for space-constrained industrial and automotive modules requiring validated AEC-Q101 variants.
Availability
P6SMB39A-E3/52 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for P6SMB39A-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was developed for high-reliability transient suppression in automotive, industrial, and communications systems - delivering standardized 600 W surge capability in compact SMB packaging with AEC-Q101 qualification options.
FAQ
What is the maximum clamping voltage of P6SMB39A-E3/52 under standard test conditions?
The maximum clamping voltage (VC) of P6SMB39A-E3/52 is 53.9 V at a peak pulse current (IPPM) of 11.1 A, measured using the industry-standard 10/1000 µs double-exponential waveform. This value ensures protected circuits remain within safe operating limits during transient events. The P6SMB39A-E3/52 achieves this clamping performance while maintaining low leakage (<1.0 µA at 33.3 V) and fast response time.
Is P6SMB39A-E3/52 suitable for automotive applications?
Yes, P6SMB39A-E3/52 has an AEC-Q101 qualified variant (P6SMB39AHE3_B) available, meeting stress test requirements for automotive electronics including temperature cycling, humidity bias, and surge robustness. While the base P6SMB39A-E3/52 is commercial-grade, its 150 °C TJ max, MSL Level 1 rating, and glass-passivated junction make it suitable for under-hood and body-control module designs when qualified versions are specified. Always verify P6SMB39A-E3/52HE3_B for automotive production use.
What does the "-E3/52" suffix indicate in P6SMB39A-E3/52?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/52" specifies packaging in 7-inch plastic tape-and-reel format with 750 units per reel. This configuration supports automated SMT placement and complies with J-STD-002 solderability standards. The P6SMB39A-E3/52 is not halogen-free (that requires -M3 suffix) nor AEC-Q101 qualified (which requires -HE3_B suffix), distinguishing it from other variants in the P6SMB39A family.
How does P6SMB39A-E3/52 compare to bidirectional TVS diodes like P6SMB39CA?
P6SMB39A-E3/52 is unidirectional and intended for DC line protection where polarity is fixed (e.g., VCC-to-ground), offering lower leakage and sharper knee characteristics. In contrast, P6SMB39CA is bidirectional with symmetric clamping in both directions, suited for AC or floating signal lines. The P6SMB39A-E3/52 cannot replace P6SMB39CA in AC-coupled applications without circuit redesign, as its cathode band enforces strict polarity orientation and reverse conduction is not characterized.
What PCB layout guidance applies to P6SMB39A-E3/52 for optimal thermal and electrical performance?
For optimal performance, mount P6SMB39A-E3/52 on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal resistance (RθJA = 100 °C/W) and 600 W pulse rating. Avoid narrow traces between the device and protected node; keep lead lengths short to minimize inductance. The P6SMB39A-E3/52 datasheet specifies this pad layout as critical for achieving rated surge current and avoiding thermal runaway during repetitive transients.
P6SMB39A-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):
- 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 (SMB)
P6SMB39A-E3/52 FAQ
1.How can I place an order for P6SMB39A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39A-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 P6SMB39A-E3/52 reliable?
The price and inventory of P6SMB39A-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 P6SMB39A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB39A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39A-E3/52?
P6SMB39A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39A-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 P6SMB39A-E3/52?
For technical support, including P6SMB39A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39A-E3/52 requirements.
6.How does Aetrix verify that P6SMB39A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB39A-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 P6SMB39A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB39A-E3/52?
All P6SMB39A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39A-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 P6SMB39A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB39A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39A-E3/52 Tags
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