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Vishay General Semiconductor - Diodes Division P6SMB12CA-E3/5B
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- Part No.:
- P6SMB12CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CA-E3/5B.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,178
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Product details
Overview
P6SMB12CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 12 V standoff voltage (VWM), 13.3 V minimum breakdown voltage (VBR), 16.7 V maximum clamping voltage at 35.9 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB12CA-E3/5B datasheet, P6SMB12CA-E3/5B pinout, P6SMB12CA-E3/5B application, or P6SMB12CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and RoHS-compliant commercial-grade sourcing details - all critical for ESD/surge protection design-in and BOM validation.
Technical Context
The P6SMB12CA-E3/5B operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
It is rated for 600 W peak pulse power (10/1000 μs), derated above 25 °C per Fig. 2, and supports repetitive surge duty cycles up to 0.01 %. With a maximum clamping voltage of 16.7 V at 35.9 A IPPM and 5.0 W steady-state power dissipation, it maintains robust protection under sustained transient stress while meeting MSL Level 1 reflow requirements (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 13.3–14.7 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 16.7 V at 35.9 A IPPM - Peak voltage seen by downstream components during worst-case 10/1000 μs surge. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients without failure; validated per IEC 61000-4-5 surge immunity testing. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal layout requirements. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial ambient environments. |
| Package | SMB (DO-214AA) - Low-profile surface-mount package compatible with automated placement and J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant. Bidirectional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no cathode band marking required. |
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 (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial interfaces. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments. |
| AEC-Q101 qualified option (_B suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor protection. |
| RoHS-compliant, halogen-free variants available | Supports environmental compliance for global electronics manufacturing and end-of-life recycling. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to limit transient voltage before it reaches sensitive analog front-ends or communication PHYs. Use Value: Maintains signal integrity below 16.7 V clamping threshold during 35.9 A surges, preventing latch-up or permanent damage to 12 V rail-connected sensors. |
Use Scenario: Safeguarding digital and analog I/O channels of programmable logic controllers against field-induced surges from motor drives, solenoids, and relay coils. IC Role / Device Role / Timing Role: Primary transient suppression device mounted at terminal block entry points, shunting energy away from isolation barriers and microcontroller GPIOs. Use Value: Delivers 600 W surge handling with <1 ns response, ensuring system uptime in factory automation where >1 kV transients are common. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs, RS-485 transceivers, and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line defense in series with common-mode chokes, clamping differential and common-mode transients across data pairs. Use Value: Symmetric 12 V VWM and 16.7 V VC enable precise coordination with upstream GDTs or secondary TVS stages in multi-stage telecom protection schemes. |
Use Scenario: Suppressing output voltage spikes caused by transformer leakage inductance and rectifier reverse recovery in AC/DC adapters. IC Role / Device Role / Timing Role: Parallel-mounted across secondary-side DC output to clamp overshoot during startup, short-circuit recovery, or line transients. Use Value: Low RθJA (100 °C/W) and 5.0 W PD allow reliable operation without heatsinking in compact adapter enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (12 V), lower PPPM (400 W), higher VC (20.1 V at 20 A), SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; less suitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin due to 150 °C/W RθJA. |
| 1.5KE12CA | Same VWM (12 V), higher PPPM (1500 W), larger DO-201 package, higher capacitance, slower response. | Better for high-energy but lower-frequency surges; unsuitable for high-speed data lines due to ~100 pF junction capacitance. | Choose for legacy through-hole designs or where PCB real estate allows larger packages and higher clamping voltage (20.1 V) is acceptable. |
Compared with SMAJ12CA and 1.5KE12CA, the P6SMB12CA-E3/5B offers optimal balance of 600 W surge rating, 16.7 V clamping, SMB footprint, and AEC-Q101 availability - making it preferred for modern surface-mount industrial and automotive protection where reliability, size, and standardized reflow compatibility are critical.
Availability
P6SMB12CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB12CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series is engineered for high-reliability transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the P6SMB12CA-E3/5B at its rated peak pulse current?
The P6SMB12CA-E3/5B has a maximum clamping voltage (VC) of 16.7 V at 35.9 A peak pulse current (IPPM) under 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 worst-case surge events. The P6SMB12CA-E3/5B maintains this clamping performance across its specified operating temperature range.
Is the P6SMB12CA-E3/5B suitable for automotive applications?
The P6SMB12CA-E3/5B itself is RoHS-compliant commercial grade; however, the P6SMB12CAHE3_B variant (same electrical specs, _B suffix) is AEC-Q101 qualified for automotive use. Engineers selecting the P6SMB12CA-E3/5B for automotive designs must confirm whether their application requires formal qualification - if so, the HE3_B version should be specified. The P6SMB12CA-E3/5B shares identical electrical and thermal characteristics with its AEC-Q101 counterpart.
How does the bidirectional configuration of the P6SMB12CA-E3/5B affect its PCB layout?
The P6SMB12CA-E3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled lines, differential buses (e.g., RS-485), or floating sensor interfaces. Unlike unidirectional TVS diodes, the P6SMB12CA-E3/5B requires no cathode alignment check, reducing assembly errors and enabling symmetric routing - a key advantage in high-density industrial and automotive control boards.
What is the thermal resistance of the P6SMB12CA-E3/5B, and how does it impact PCB design?
The P6SMB12CA-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 guides minimum pad sizing and copper pour area needed to maintain TJ ≤ 150 °C under sustained 5.0 W power dissipation. For high-reliability designs, adding thermal vias under pads or increasing copper area reduces effective RθJA and improves surge endurance - especially important in enclosed automotive or industrial enclosures.
Does the P6SMB12CA-E3/5B meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, the P6SMB12CA-E3/5B meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This means it can be subjected to standard lead-free soldering profiles without baking or special handling - supporting high-yield automated assembly in commercial and industrial manufacturing. The "E3" suffix confirms RoHS compliance and commercial-grade MSL certification, verified in Vishay Document Number 88370.
P6SMB12CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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)
P6SMB12CA-E3/5B FAQ
1.How can I place an order for P6SMB12CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CA-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 P6SMB12CA-E3/5B reliable?
The price and inventory of P6SMB12CA-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 P6SMB12CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB12CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CA-E3/5B?
P6SMB12CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CA-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 P6SMB12CA-E3/5B?
For technical support, including P6SMB12CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB12CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB12CA-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 P6SMB12CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB12CA-E3/5B?
All P6SMB12CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CA-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 P6SMB12CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB12CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CA-E3/5B Tags
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