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Vishay General Semiconductor - Diodes Division P6SMB15CA-M3/52
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- Part No.:
- P6SMB15CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CA-M3/52.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
P6SMB15CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection on signal and power lines. It features a 15 V standoff voltage (VWM), 21.2 V clamping voltage at 28.3 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB15CA-M3/52 datasheet, P6SMB15CA-M3/52 pinout, P6SMB15CA-M3/52 application, or P6SMB15CA-M3/52 equivalent, key selection considerations include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.41), halogen-free RoHS compliance (M3 suffix), and SMB (DO-214AA) package suitability for automated SMT assembly in space-constrained designs.
Technical Context
The P6SMB15CA-M3/52 operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports reflow soldering up to 260 °C peak. With 100 °C/W junction-to-ambient thermal resistance and 20 °C/W junction-to-lead resistance, thermal performance depends critically on PCB copper pad layout per the 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 21.2 V at 28.3 A - Peak voltage seen by protected circuit under 600 W 10/1000 μs surge; determines downstream component stress. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 μs waveform; validates robustness against common surge standards. |
| ID (Leakage) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| Package | SMB (DO-214AA) - Low-profile SMT package with 5.59 mm × 4.06 mm footprint; optimized for high-density PCB layouts. |
| Temperature Range | −65 °C to +150 °C - Wide operational range supports under-hood automotive, industrial control, and outdoor telecom environments. |
Pinout & Package
SMB (DO-214AA) package: surface-mount, bidirectional device with no polarity marking; cathode/anode terminals are functionally symmetric and interchangeable in circuit design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; completes bidirectional clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements (4 kV line-to-line) when properly mounted. |
| Halogen-free & RoHS-compliant (M3) | Supports environmental compliance for global industrial and automotive supply chains without compromising reliability. |
| MSL Level 1 rating | Permits standard reflow soldering without dry-pack or baking preconditioning - reduces manufacturing overhead. |
| Low clamping ratio (VC/VWM = 1.41) | Minimizes voltage overshoot across protected ICs, extending lifetime of downstream MOSFETs and interface ICs. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp transients before they reach signal conditioning circuitry. Use Value: Maintains signal fidelity under 12 V/24 V system surges up to 600 W while meeting AEC-Q101 qualification requirements for automotive-grade reliability. |
Use Scenario: Shielding digital input/output channels in programmable logic controllers from field-induced surges and ground bounce in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated 24 V DC I/O lines, coordinated with optocouplers and series impedance. Use Value: Prevents latch-up and permanent damage to microcontrollers and level-shifting buffers during 4 kV contact ESD or 2 kV surge events. |
| Telecom Line Interface | Consumer USB/Display Port ESD Guard |
Use Scenario: Safeguarding Ethernet PHYs, RS-485 transceivers, and DSL line drivers against lightning-induced longitudinal surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary protection device in multi-stage architecture, absorbing bulk energy before secondary TVS or MOV stages. Use Value: Delivers sub-22 V clamping at 28.3 A, ensuring protected transceivers remain within absolute maximum ratings during 10/1000 μs transients. |
Use Scenario: ESD suppression on high-speed differential pairs (e.g., USB 2.0 D+/D−, DisplayPort lanes) in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) bidirectional clamp placed adjacent to connector to minimize signal distortion. Use Value: Provides IEC 61000-4-2 ±15 kV air/±8 kV contact ESD protection without degrading signal rise time or insertion loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-T3 | Same VWM (12.8 V), VC = 24.4 V at 24.5 A; 600 W rating; SMB package; RoHS-compliant but not halogen-free. | Higher clamping voltage increases stress on protected ICs; suitable where tighter voltage margins are not required. | Select SMBJ15CA-T3 if halogen-free content is not mandated and legacy sourcing is preferred. |
| 1.5SMC15CA | Same electrical specs (VWM = 12.8 V, VC = 21.2 V), but in larger SMC (DO-214AB) package (7.11 mm × 6.22 mm). | Requires more PCB area; better thermal dissipation under sustained surge duty cycles due to lower RθJA (~65 °C/W). | Choose 1.5SMC15CA when board layout allows larger footprint and higher average power handling is needed. |
Compared with SMBJ15CA-T3 and 1.5SMC15CA, the P6SMB15CA-M3/52 offers identical clamping performance in a smaller SMB footprint with halogen-free compliance - making it optimal for compact, environmentally regulated designs where PCB real estate and material declarations are critical.
Availability
P6SMB15CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, consistent halogen-free compliance, and full traceability across production batches.
Supply support for P6SMB15CA-M3/52 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 cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications systems - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 qualified variants.
FAQ
What is the clamping voltage of P6SMB15CA-M3/52 and how is it measured?
The P6SMB15CA-M3/52 has a maximum clamping voltage (VC) of 21.2 V, measured at a peak pulse current (IPPM) of 28.3 A using a 10/1000 μs double-exponential waveform. This value represents the highest voltage the device allows across its terminals during a standardized surge event, directly protecting downstream components from overvoltage stress. The test condition is defined in the Vishay datasheet Document Number 88370, page 2.
Is P6SMB15CA-M3/52 suitable for automotive applications?
Yes, P6SMB15CA-M3/52 is halogen-free and RoHS-compliant, and the P6SMB family includes AEC-Q101 qualified variants (e.g., P6SMB15CAHM3_B/H). While the M3 suffix itself denotes halogen-free commercial grade, the underlying die and construction meet automotive reliability requirements - making P6SMB15CA-M3/52 widely used in non-safety-critical automotive subsystems such as body control modules and sensor interfaces.
How does the bidirectional configuration of P6SMB15CA-M3/52 affect circuit design?
The bidirectional configuration of P6SMB15CA-M3/52 eliminates polarity marking and enables symmetric clamping on AC-coupled or floating lines - simplifying layout and reducing BOM complexity. Unlike unidirectional TVS diodes, P6SMB15CA-M3/52 conducts during both positive and negative transients without requiring external biasing, making it ideal for RS-485, CAN, and audio line protection where signal polarity is undefined or alternating.
What is the thermal resistance of P6SMB15CA-M3/52 and how does it impact layout?
P6SMB15CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain reliability under repetitive surges, PCB layout must replicate this pad area - undersized traces or insufficient copper will cause excessive junction heating and premature failure of the P6SMB15CA-M3/52.
Does P6SMB15CA-M3/52 require derating at elevated ambient temperatures?
Yes, P6SMB15CA-M3/52 requires derating above TA = 25 °C. According to Figure 2 in the Vishay datasheet, peak pulse power drops linearly to ~50 % at 100 °C ambient and reaches zero at 150 °C. For example, at 75 °C, the usable PPPM is reduced to approximately 400 W. Designers must apply this derating curve when sizing P6SMB15CA-M3/52 for high-temperature enclosures or under-hood automotive locations.
P6SMB15CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB15CA-M3/52 FAQ
1.How can I place an order for P6SMB15CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CA-M3/52 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 P6SMB15CA-M3/52 reliable?
The price and inventory of P6SMB15CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CA-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB15CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CA-M3/52?
P6SMB15CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CA-M3/52 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 P6SMB15CA-M3/52?
For technical support, including P6SMB15CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CA-M3/52 requirements.
6.How does Aetrix verify that P6SMB15CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB15CA-M3/52 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 P6SMB15CA-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB15CA-M3/52?
All P6SMB15CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CA-M3/52, 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 P6SMB15CA-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB15CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CA-M3/52 Tags
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