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Vishay General Semiconductor - Diodes Division P6SMB39AHE3_B/H
- Part No.:
- P6SMB39AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHE3_B/H.pdf
- Description:
- 600W,39V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,437
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Product details
Overview
P6SMB39AHE3_B/H 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 automotive and industrial power rails.
For engineers reviewing the P6SMB39AHE3_B/H datasheet, P6SMB39AHE3_B/H pinout, P6SMB39AHE3_B/H application, or P6SMB39AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 33.3 V and rapidly transitions to low-impedance conduction above VBR = 37.1–41.0 V to limit transient overvoltage. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device delivers 600 W peak pulse power handling per 10/1000 µs waveform with 0.01% duty cycle, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) when mounted on minimum recommended pad layout. It meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin for protected circuit. |
| VBR (Breakdown) | 37.1–41.0 V at IT = 1 mA - Voltage at which device enters avalanche conduction; ensures precise clamping onset. |
| VC (Clamping) | 53.9 V at IPPM = 11.1 A - Maximum voltage seen by protected load during 10/1000 µs surge; determines downstream component stress. |
| PPPM | 600 W - Peak transient power dissipation capability; enables robust protection against lightning-induced or inductive-switching surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-temperature industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with standard SMT reflow and automated pick-and-place. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance testing. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential rail in unidirectional TVS configuration. | Provides low-impedance path for surge current to return to source; must be routed with low-inductance trace to maximize clamping speed. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 24 V supply or CAN bus line). | Defines clamping reference point; cathode band marking enables correct orientation during automated assembly and visual inspection. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables suppression of high-energy transients from load dump or inductive switching without degradation over 1000+ surges. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across temperature and lifetime. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability. |
| MSL Level 1 (260 °C peak) | Permits single-reflow soldering without moisture sensitivity concerns; eliminates baking requirement in production. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >1 kV/ns), improving protection margin for sensitive ICs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (up to 60 V, 100 ms) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤53.9 V during 11.1 A surge, preventing latch-up or gate oxide damage in downstream 36 V-rated regulators and MCUs. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in factory automation PLCs from field-wiring induced spikes. IC Role / Device Role / Timing Role: Placed at connector interface to absorb 1 kV EFT bursts and 10/700 µs telecom surges on 0–10 V or 4–20 mA signal lines. Use Value: Clamps transients within 1 ns response time while maintaining <1 µA leakage at 33.3 V, preserving sensor accuracy and offset stability. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Protects PoE-powered network switches and base stations from AC-line coupled surges entering via 48 V DC input. IC Role / Device Role / Timing Role: Mounted directly at DC jack with short traces to chassis ground, acting as first-line defense before primary filtering. Use Value: Handles 600 W peak pulses without thermal runaway, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) requirements. |
Use Scenario: Guards USB VBUS line in portable medical monitors against hot-plug induced overshoot and ESD events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, placed upstream of USB controller's internal protection diodes. Use Value: Provides lower clamping voltage (53.9 V) than integrated solutions, reducing risk of VBUS overvoltage damage during 8 kV contact ESD. |
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, but lower 33 V VWM, 36.7–40.6 V VBR, 53.3 V VC at 11.3 A; not AEC-Q101 qualified. | Commercial-grade only; unsuitable for automotive under-hood use due to missing qualification and higher leakage at elevated temperature. | Select when cost-sensitive industrial designs require identical clamping performance without automotive certification. |
| 1.5SMC33A | Higher-power SMC package (same VWM/VBR range), 600 W rating, but larger footprint (0.305" × 0.230") and 130 °C TJ max. | Requires PCB area increase and thermal derating above 75 °C ambient; lacks AEC-Q101 validation despite automotive usage history. | Choose if legacy board redesign allows larger package and higher surge repetition rate is needed beyond SMB thermal limits. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, P6SMB39AHE3_B/H uniquely combines AEC-Q101 qualification, SMB footprint, and precisely matched 33.3 V VWM with 53.9 V clamping - making it the optimal drop-in solution for new automotive electronics where space, reliability, and regulatory compliance are jointly constrained.
Availability
P6SMB39AHE3_B/H 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 P6SMB39AHE3_B/H 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, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against ESD, EFT, and surge events is mission-critical.
FAQ
What is the maximum clamping voltage of the P6SMB39AHE3_B/H under a 10/1000 µs surge?
The P6SMB39AHE3_B/H has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB39AHE3_B/H maintains this clamping performance across its specified operating temperature range and after repeated surge exposure.
Is the P6SMB39AHE3_B/H suitable for automotive applications?
Yes, the P6SMB39AHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3" and "_B" suffixes in its ordering code - indicating RoHS-compliant construction and full automotive reliability validation. It is rated for junction temperatures up to +150 °C and meets MSL Level 1, supporting under-hood deployment in engine control units, body electronics, and ADAS modules. The P6SMB39AHE3_B/H undergoes accelerated stress testing per AEC-Q101 including temperature cycling, HTRB, and surge endurance.
What does the "_B/H" suffix in P6SMB39AHE3_B/H indicate?
The "_B" denotes AEC-Q101 qualification for the P6SMB39AHE3_B/H series covering 6.8 V to 220 V devices, while "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This ordering format aligns with Vishay's documented scheme in Section 3 of datasheet 88370. The P6SMB39AHE3_B/H is supplied with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing.
How does the P6SMB39AHE3_B/H compare to bidirectional TVS diodes like P6SMB39CA?
The P6SMB39AHE3_B/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply to ground), offering tighter VBR tolerance and lower leakage than its bidirectional counterpart P6SMB39CA. The P6SMB39CA supports AC or floating signal lines but exhibits higher capacitance and symmetric clamping in both directions. For 24 V automotive power rails, the P6SMB39AHE3_B/H provides superior leakage control and more predictable clamping behavior than P6SMB39CA.
What is the thermal resistance of the P6SMB39AHE3_B/H, and how does it affect layout design?
The P6SMB39AHE3_B/H 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 defined in the Vishay datasheet. This value requires PCB layout with adequate copper area and minimal trace length to avoid exceeding the 150 °C maximum junction temperature during repetitive surge events. The P6SMB39AHE3_B/H thermal performance degrades significantly with smaller pads or no thermal vias, so adherence to the recommended mounting pad layout is essential for sustained 600 W pulse handling.
P6SMB39AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB39AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHE3_B/H 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/H reliable?
The price and inventory of P6SMB39AHE3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB39AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHE3_B/H?
P6SMB39AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHE3_B/H 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/H?
For technical support, including P6SMB39AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB39AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHE3_B/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB39AHE3_B/H?
All P6SMB39AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHE3_B/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB39AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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