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Vishay General Semiconductor - Diodes Division P6SMB39A-E3/5B
- Part No.:
- P6SMB39A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39A-E3/5B.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB39A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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 power supplies.
For engineers reviewing the P6SMB39A-E3/5B datasheet, P6SMB39A-E3/5B pinout, P6SMB39A-E3/5B application, or P6SMB39A-E3/5B equivalent, this page delivers verified electrical parameters, thermal behavior, AEC-Q101 qualification status, RoHS-compliant packaging, and real-world protection use cases - all confirmed from Vishay's official P6SMB Series specification document (88370, Rev. 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable surge response. Its low incremental surge resistance and fast response time enable effective suppression of inductive switching spikes and ESD events without affecting normal circuit operation below 33.3 V.
Rated for 150 °C maximum junction temperature and 100 °C/W junction-to-ambient thermal resistance, it supports reliable operation under repetitive transient conditions at ≤0.01% duty cycle. The device meets J-STD-020 MSL Level 1 and is RoHS-compliant per suffix -E3, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Confirmed breakdown range where device enters avalanche conduction; ensures predictable turn-on during overvoltage. |
| VC (Clamping) | 53.9 V at 11.1 A - Peak voltage seen across protected circuit during 10/1000 μs transient; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 μs waveform; enables robust protection against IEC 61000-4-5 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in high-ambient environments like motor drives and industrial controls. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal layout requirements. |
| Package | SMB (DO-214AA) - Surface-mount outline with 3.94 mm length, 2.20 mm width, and 1.95 mm height; optimized for automated placement and space-constrained designs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 3.94 mm × 2.20 mm × 1.95 mm. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when cathode is tied to protected line. |
| Cathode | High-side connection point | Connected to protected signal or power rail; marked by visible band; conducts avalanche current toward anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-event suppression of high-energy transients common in automotive load-dump and industrial relay switching. |
| 11.1 A peak pulse current (IPPM) | Supports robust clamping performance without degradation under repeated surge stress up to 0.01% duty cycle. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR tolerance across temperature and lifetime, critical for safety-critical systems. |
| AEC-Q101 qualified option available (_B suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - P6SMB39A-E3/5B itself is commercial grade but shares identical die and construction. |
| RoHS-compliant, matte tin-plated leads | Guarantees compatibility with lead-free reflow processes and eliminates whisker risk per JESD 201 Class 2. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from solenoids and brushed DC motors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MOSFET gate and source, clamping negative-going transients during turn-off. Use Value: Limits gate-source voltage to ≤53.9 V, preventing oxide breakdown in logic-level MOSFETs while maintaining 33.3 V system margin. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from battery dump and jump-start surges in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Standoff-connected TVS on sensor supply line (VSUPPLY–GND), conducting only during >33.3 V events. Use Value: Clamps 12 V rail to ≤53.9 V during 24 V load-dump pulses, preserving ADC reference integrity and avoiding latch-up in signal conditioning ICs. |
| Telecom Power Feeds | Consumer Power Adapters |
Use Scenario: Surge protection on PoE (Power over Ethernet) midspan injector outputs exposed to lightning-induced surges on CAT5/6 cabling. IC Role / Device Role / Timing Role: Primary-stage TVS on +48 V DC output rail, positioned upstream of DC-DC converters and isolation barriers. Use Value: Absorbs 600 W transient energy within 1000 μs, limiting voltage overshoot to 53.9 V and preventing damage to downstream SiC FETs and optocouplers. |
Use Scenario: Input-stage transient suppression in USB-C PD adapters subjected to ESD and AC-line coupled noise. IC Role / Device Role / Timing Role: Unidirectional clamp on primary-side bulk capacitor rail, referenced to earth-grounded heatsink. Use Value: Maintains 33.3 V standoff during normal 30–42 V adapter operation while clamping 1 kV EFT bursts to <54 V, meeting IEC 61000-4-4 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A | Same SMB package, 33.3 V VWM, but lower 400 W PPPM and higher 58.1 V VC at 10.3 A. | Less robust for high-energy surges; suitable only where peak current remains <10.3 A and clamping margin allows 4.2 V higher voltage. | Select SMAJ39A only if cost sensitivity outweighs need for full 600 W rating and tighter clamping. |
| 1.5SMC39A | Higher-power SMC package (7.1 mm × 6.2 mm), same 33.3 V VWM, 53.9 V VC, but rated for 1500 W PPPM and 27.8 A IPPM. | Requires larger PCB area and different pad layout; preferred for industrial systems needing extended surge endurance beyond 600 W. | Choose 1.5SMC39A when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when field failure history shows P6SMB39A-E3/5B marginality. |
Compared with SMAJ39A, P6SMB39A-E3/5B delivers 50% higher surge power headroom and tighter clamping; versus 1.5SMC39A, it trades footprint and cost for sufficient protection in space-constrained consumer and telecom designs where 600 W meets compliance requirements.
Availability
P6SMB39A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer power adapters requiring stable component supply, RoHS-compliant sourcing, and consistent SMB package form factor.
Supply support for P6SMB39A-E3/5B 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 targets board-level transient protection in high-volume industrial, automotive, and communications equipment, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 qualification paths.
FAQ
What is the clamping voltage of P6SMB39A-E3/5B at its rated peak pulse current?
The P6SMB39A-E3/5B has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Vishay's datasheet (Document Number 88370, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during surge events. Engineers must verify that downstream components tolerate ≤53.9 V under transient conditions when using P6SMB39A-E3/5B.
Is P6SMB39A-E3/5B AEC-Q101 qualified?
No, P6SMB39A-E3/5B is not AEC-Q101 qualified. It carries the -E3 suffix indicating RoHS-compliant commercial-grade construction. However, the P6SMB39AHE3_B variant - sharing identical electrical characteristics and SMB package - is AEC-Q101 qualified per Vishay's ordering table. For automotive applications requiring qualification, specify P6SMB39AHE3_B instead of P6SMB39A-E3/5B.
What is the thermal resistance of P6SMB39A-E3/5B, and how does it affect PCB layout?
P6SMB39A-E3/5B 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. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces RθJA. For reliable operation at elevated ambient temperatures, PCB layout must allocate adequate copper area to keep junction temperature below 150 °C - especially during repetitive surge events.
How does the unidirectional configuration of P6SMB39A-E3/5B impact circuit placement?
The unidirectional configuration of P6SMB39A-E3/5B requires correct orientation: the cathode band must connect to the protected line (e.g., +12 V rail), and the anode to ground or return path. Reversal prevents clamping during positive transients and risks device failure. Unlike bidirectional variants (e.g., P6SMB39CA), P6SMB39A-E3/5B does not suppress negative-going surges on AC-coupled lines - confirm polarity alignment before routing P6SMB39A-E3/5B into your design.
What is the maximum operating temperature for P6SMB39A-E3/5B, and how is it derated above 25 °C?
P6SMB39A-E3/5B has a maximum junction temperature (TJ) of +150 °C and is rated for operation from –65 °C to +150 °C. Its peak pulse power (PPPM) derates linearly above 25 °C ambient, per Figure 2 in the Vishay datasheet: at 85 °C ambient, PPPM drops to ~70% of 600 W (~420 W). System designers must apply this derating curve when sizing P6SMB39A-E3/5B for high-temperature enclosures or densely packed boards.
P6SMB39A-E3/5B 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-E3/5B FAQ
1.How can I place an order for P6SMB39A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB39A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB39A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39A-E3/5B?
P6SMB39A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39A-E3/5B 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-E3/5B?
For technical support, including P6SMB39A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39A-E3/5B requirements.
6.How does Aetrix verify that P6SMB39A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB39A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB39A-E3/5B?
All P6SMB39A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB39A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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