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Vishay General Semiconductor - Diodes Division P6SMB39AHE3_B/I
- Part No.:
- P6SMB39AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHE3_B/I.pdf
- Description:
- 600W,39V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,581
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Product details
Overview
P6SMB39AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, 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 test current, 53.9 V maximum clamping voltage at 11.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform.
For engineers reviewing the P6SMB39AHE3_B/I datasheet, P6SMB39AHE3_B/I pinout, P6SMB39AHE3_B/I application, or P6SMB39AHE3_B/I equivalent, this AEC-Q101 qualified TVS diode supports automotive-grade transient protection in DC power rails, sensor interfaces, and MOSFET gate drivers where reliable overvoltage suppression and low clamping ratio are required.
Technical Context
The P6SMB39AHE3_B/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to deliver fast response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a well-controlled VBR tolerance (±5%) and temperature coefficient of 0.100 %/°C, ensuring stable performance across -65 °C to +150 °C operating junction temperature.
Designed for surface-mount assembly on SMB (DO-214AA) footprint, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports automated placement. The cathode band identifies polarity, and its 100 °C/W junction-to-ambient thermal resistance requires appropriate PCB copper pad area (0.2" × 0.2") for rated 600 W pulse handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Avalanche onset range; ensures predictable turn-on during transients without premature conduction |
| VC (Clamping) | 53.9 V at 11.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; enables robust protection against IEC 61000-4-5 surges |
| ID (Leakage) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves efficiency in battery-powered or high-impedance circuits |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or lower-potential rail in unidirectional configuration | Provides reference node for clamping action; must be routed with low-inductance path to minimize overshoot |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 3.3 V rail, CAN bus, sensor output) | Defines clamping direction; band-marked terminal ensures correct orientation during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 12 V systems |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive applications including engine control units, ADAS sensors, and body electronics |
| Glass passivated junction | Ensures stable VBR over lifetime and improved moisture resistance vs. epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or special handling |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load dump transients on 12 V supply lines feeding ECUs and infotainment modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges above 33.3 V while remaining non-conductive during normal operation. Use Value: Limits peak voltage to 53.9 V during 11.1 A pulses, preventing damage to 36 V-rated LDOs and microcontrollers. |
Use Scenario: Protects analog outputs of pressure/temperature sensors exposed to ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Fast-response TVS shunts sub-100 ns ESD events (IEC 61000-4-2 ±8 kV contact) before they reach precision ADC inputs. Use Value: 1.0 μA leakage at 33.3 V avoids signal offset errors in 24-bit sensor front-ends with >10 MΩ input impedance. |
| MOSFET Gate Driver Protection | DC-DC Converter Input Stage |
|
Use Scenario: Shields high-side N-channel MOSFET gates from voltage spikes induced by parasitic inductance in motor drive half-bridges. IC Role / Device Role / Timing Role: Clamps gate-source voltage to ≤53.9 V during fast dv/dt events, preventing oxide breakdown. Use Value: Sub-1 ns response time ensures clamping activation before gate oxide failure thresholds are exceeded. |
Use Scenario: Guards buck converter input capacitors and controller ICs against line surges in telecom power supplies. IC Role / Device Role / Timing Role: Absorbs 600 W transient energy from AC/DC rectifier output or PoE injectors without thermal runaway. Use Value: 150 °C max junction temperature allows sustained operation in enclosed 70 °C ambient enclosures with minimal derating. |
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-E3/5B | Same SMB package, 33 V VWM, but lower PPPM (400 W) and higher VC (53.3 V at 7.5 A); no AEC-Q101 qualification | Rated for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary |
| 1.5SMC33A | Higher-power SMC package (same VWM/VC), 1500 W PPPM, larger footprint (7.11 mm × 6.22 mm vs. SMB's 4.57 mm × 3.94 mm) | Requires PCB layout change; suited for high-energy industrial surges where space permits | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and SMB thermal limits are insufficient |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, the P6SMB39AHE3_B/I delivers AEC-Q101 assurance in the compact SMB footprint while maintaining optimal clamping ratio and thermal performance for space-constrained automotive modules.
Availability
P6SMB39AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and DC-DC converter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB39AHE3_B/I 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 and application-specific performance.
The P6SMB Series targets board-level transient protection in automotive, industrial, and telecom systems, with design focus on high pulse power density, AEC-Q101 compliance, and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of the P6SMB39AHE3_B/I under a 10/1000 μs surge?
The P6SMB39AHE3_B/I has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB39AHE3_B/I maintains this clamping performance across its full operating temperature range.
Is the P6SMB39AHE3_B/I qualified for automotive applications?
Yes, the P6SMB39AHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making the P6SMB39AHE3_B/I suitable for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What does the "_B/I" suffix indicate in P6SMB39AHE3_B/I?
The "_B" denotes AEC-Q101 qualification for the P6SMB39AHE3_B/I within the 6.8 V to 220 V VWM range, while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format aligns with Vishay's ordering nomenclature in the P6SMB datasheet, Section "Ordering Information", and confirms full compliance with automotive logistics standards.
How does the P6SMB39AHE3_B/I compare to bidirectional TVS diodes?
The P6SMB39AHE3_B/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply rails). Unlike bidirectional variants (e.g., P6SMB39CA), it conducts only in reverse breakdown and blocks forward current up to 3.5 V at 50 A. This makes the P6SMB39AHE3_B/I unsuitable for AC or differential signal lines but optimal for minimizing leakage and maximizing clamping precision in polarized systems.
What PCB layout guidance applies to the P6SMB39AHE3_B/I for optimal thermal performance?
For rated 600 W pulse handling, the P6SMB39AHE3_B/I requires mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2 and "Mechanical Data". Use internal ground/power planes connected via multiple vias to enhance heat spreading. Avoid narrow traces between the P6SMB39AHE3_B/I and protected ICs to reduce inductance and prevent voltage overshoot during fast transients.
P6SMB39AHE3_B/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB39AHE3_B/I FAQ
1.How can I place an order for P6SMB39AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHE3_B/I 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 P6SMB39AHE3_B/I reliable?
The price and inventory of P6SMB39AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39AHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB39AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHE3_B/I?
P6SMB39AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHE3_B/I 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 P6SMB39AHE3_B/I?
For technical support, including P6SMB39AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHE3_B/I requirements.
6.How does Aetrix verify that P6SMB39AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHE3_B/I 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 P6SMB39AHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB39AHE3_B/I?
All P6SMB39AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHE3_B/I, 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 P6SMB39AHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB39AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHE3_B/I Tags
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