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Vishay General Semiconductor - Diodes Division P6SMB15A-E3/52
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- Part No.:
- P6SMB15A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15A-E3/52.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:10,131
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Product details
Overview
P6SMB15A-E3/52 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 12.8 V stand-off voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 28.3 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 P6SMB15A-E3/52 datasheet, P6SMB15A-E3/52 pinout, P6SMB15A-E3/52 application, or P6SMB15A-E3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P6SMB15A-E3/52 operates as a unidirectional avalanche diode that enters conduction when reverse voltage exceeds its breakdown threshold (14.3–15.8 V), limiting transient energy via low incremental surge resistance and fast response time. Its glass-passivated junction ensures stable performance under repetitive surges with 0.01% duty cycle.
Thermal design relies on RθJA = 100 °C/W (junction-to-ambient, mounted on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), supporting operation from –65 °C to +150 °C. The cathode band identifies polarity, and it meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working margin. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal system voltage. |
| VC (Clamping) | 21.2 V at 28.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream IC survival. |
| PPPM | 600 W - Peak transient power handling capability; enables protection against IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 28.3 A - Maximum non-repetitive surge current supported; determines minimum trace width and PCB pad sizing. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limits for high-temperature environments. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, polarity indicated by cathode band. 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 | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality in unidirectional configuration. |
| Cathode (banded end) | Reverse voltage clamp node | Connected to higher-potential rail (e.g., VCC, signal line); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive switching spikes in 24 V industrial systems. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, reducing stress on downstream logic-level MOSFETs and microcontrollers. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR tolerance across temperature and lifetime under repeated surge stress. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
| AEC-Q101 qualification option (HE3/HM3 suffixes) | Validated for automotive powertrain and body electronics where TVS failure could impact functional safety. |
Applications
| Industrial Motor Drive Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses voltage spikes from relay coil de-energization and H-bridge shoot-through in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between 24 V supply rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits transient voltage to ≤21.2 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic controllers interfacing with motor drivers. |
Use Scenario: Shields CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across signal line and chassis ground, activated only during >12.8 V excursions. Use Value: Maintains signal integrity below 21.2 V clamping level while surviving 600 W pulses - meeting ISO 7637-2 Pulse 1/2/5a requirements. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
|
Use Scenario: Protects AC-DC converter primary-side rectifier and controller ICs from mains-borne surges and EFT bursts. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS placed across bulk capacitor input, absorbing energy before it reaches switching FETs. Use Value: Withstands 28.3 A peak current and 600 W pulse without degradation, extending adapter MTBF in regions with unstable grid voltage. |
Use Scenario: Guards Ethernet PHYs and DSL line drivers against induced surges from nearby power lines or lightning coupling. IC Role / Device Role / Timing Role: Point-of-entry TVS on RJ-45 interface, configured anode-to-ground to clamp common-mode transients on differential pairs. Use Value: Delivers <21.2 V clamping at 28.3 A while maintaining <1 µA leakage at 12.8 V - preserving signal-to-noise ratio in high-speed data links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A (Bourns) | Same SMB package, 15 V nominal, but 22.5 V clamping voltage at 24.7 A; 400 W peak power rating. | Limited to lower-energy transients; not suitable for IEC 61000-4-5 Level 4 compliance. | Select SMAJ15A only if system-level surge testing confirms 400 W sufficiency and layout allows tighter thermal management. |
| 1.5SMC15A (ON Semiconductor) | Same 15 V rating, 21.2 V clamping, but SMC (DO-214AB) package - 7.11 mm × 6.22 mm vs. SMB's 5.59 mm × 4.06 mm. | Requires PCB redesign due to larger footprint and different pad layout; higher RθJA (110 °C/W). | Choose 1.5SMC15A only when higher thermal mass is needed and board space permits larger SMC footprint. |
Compared with SMAJ15A and 1.5SMC15A, the P6SMB15A-E3/52 delivers identical clamping performance in a smaller SMB package with superior 600 W surge capacity and lower thermal resistance - making it optimal for space-constrained, high-reliability industrial and automotive designs requiring full IEC/ISO compliance.
Availability
P6SMB15A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, consumer power adapters, and telecom line cards requiring stable component supply, RoHS compliance, and AEC-Q101-qualified alternatives.
Supply support for P6SMB15A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in compact SMT formats, engineered for automotive, industrial, and telecom systems where robustness, consistency, and JEDEC-standard packaging are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB15A-E3/52 under standard test conditions?
The P6SMB15A-E3/52 has a maximum clamping voltage (VC) of 21.2 V when subjected to a 10/1000 µs waveform at 28.3 A peak pulse current. This value is measured per Figure 1 in Vishay Document 88370 and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB15A-E3/52 maintains this clamping performance across its specified operating temperature range and is validated with 0.01% duty cycle repetitive testing.
Is the P6SMB15A-E3/52 suitable for automotive applications?
The P6SMB15A-E3/52 itself is commercial-grade (E3 suffix), but Vishay offers AEC-Q101-qualified variants under HE3 and HM3 suffixes (e.g., P6SMB15AHE3_B). While the P6SMB15A-E3/52 meets MSL Level 1 and operates from –65 °C to +150 °C, automotive qualification requires explicit HE3/HM3 ordering codes. For non-safety-critical body electronics, the P6SMB15A-E3/52 may be used pending customer validation; however, functional safety systems require the AEC-Q101 version.
How does the P6SMB15A-E3/52 differ from bidirectional TVS diodes like P6SMB15CA?
The P6SMB15A-E3/52 is unidirectional and functions only in reverse bias - conducting during positive transients on its cathode side - whereas P6SMB15CA is bidirectional and clamps both polarities. The P6SMB15A-E3/52 has a defined cathode band for polarity orientation and supports forward conduction up to 100 A surge (IFSM), unlike bidirectional types. Use P6SMB15A-E3/52 where DC bias exists (e.g., power rails); use P6SMB15CA for AC or floating signal lines.
What is the thermal resistance of the P6SMB15A-E3/52, and how does it affect PCB layout?
The P6SMB15A-E3/52 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 internal ground planes reduces RθJA. Layout must follow Vishay's recommended pad dimensions (0.086" × 0.060") and avoid solder mask over thermal pads to ensure reliable 600 W pulse handling without thermal runaway.
Does the P6SMB15A-E3/52 require derating at elevated ambient temperatures?
Yes - the P6SMB15A-E3/52 must be derated above 25 °C ambient per Figure 2 in Vishay Document 88370. At 75 °C ambient, its peak pulse power drops to ~450 W (75% of 600 W), and at 125 °C, it falls to ~240 W (40%). Derating applies to both single-pulse and repetitive surge conditions. System designers must verify that worst-case ambient + self-heating stays below 150 °C junction temperature using RθJA = 100 °C/W and expected power dissipation.
P6SMB15A-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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
P6SMB15A-E3/52 FAQ
1.How can I place an order for P6SMB15A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15A-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 P6SMB15A-E3/52 reliable?
The price and inventory of P6SMB15A-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 P6SMB15A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB15A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15A-E3/52?
P6SMB15A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15A-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 P6SMB15A-E3/52?
For technical support, including P6SMB15A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15A-E3/52 requirements.
6.How does Aetrix verify that P6SMB15A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB15A-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 P6SMB15A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB15A-E3/52?
All P6SMB15A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15A-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 P6SMB15A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB15A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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