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Vishay General Semiconductor - Diodes Division P6SMB12A-M3/5B
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- Part No.:
- P6SMB12A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12A-M3/5B.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,772
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Product details
Overview
P6SMB12A-M3/5B 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 12 V breakdown voltage (VBR = 11.4–12.6 V at IT = 1.0 mA), 10.2 V stand-off voltage (VWM), and clamps to ≤16.7 V at 35.9 A peak pulse current (10/1000 µs), delivering 600 W peak pulse power for surge protection in automotive and industrial electronics.
For engineers reviewing the P6SMB12A-M3/5B datasheet, P6SMB12A-M3/5B pinout, P6SMB12A-M3/5B application, or P6SMB12A-M3/5B equivalent, this part serves as a halogen-free, RoHS-compliant, commercial-grade TVS with AEC-Q101 qualification available (via HM3 suffix), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and lightning surge protection design.
Technical Context
The P6SMB12A-M3/5B operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable reverse breakdown and fast response (<1 ns). Its clamping behavior is defined by a 10/1000 µs double-exponential waveform, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W enabling effective transient energy dissipation under short-duration surges.
It exhibits a temperature coefficient of VBR = +0.078 %/°C, confirming positive drift with junction temperature, and maintains ≤5.0 µA reverse leakage at VWM = 10.2 V. The cathode-band polarity marking enables unambiguous PCB orientation during automated placement on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA test current - defines precise avalanche onset window for reliable overvoltage triggering |
| VWM | 10.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤16.7 V at 35.9 A - clamped voltage seen by protected circuit during 600 W transient event |
| IPPM | 35.9 A (10/1000 µs) - peak surge current capability without failure under standardized surge waveform |
| PPPM | 600 W - peak pulse power handling capacity, derated above TA = 25 °C per Fig. 2 |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive or industrial enclosures |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and MSL Level 1 rating |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by cathode band on unidirectional devices. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or bias conditions |
| Cathode | Reverse breakdown terminal | Connected to higher-potential side; avalanche conduction initiates here when VRM exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V rails without derating |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage across temperature and humidity stress |
| MSL Level 1, peak reflow 260 °C | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for global industrial and automotive supply chains |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects 12 V supply and LIN bus lines in BCM from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping spikes before they reach MCU power pins. Use Value: Limits clamped voltage to ≤16.7 V, staying safely below 20 V absolute maximum rating of typical 12 V-input PMICs. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on input front-end, absorbing repetitive 10/1000 µs transients from solenoid switching. Use Value: Withstands ≥1000 surges at rated IPPM while maintaining VWM = 10.2 V to avoid false triggering on nominal 24 V inputs. |
| Consumer Power Adapter Output Stage | Telecom Base Station DC Power Distribution |
|
Use Scenario: Guards secondary-side 12 V output of AC/DC adapters against ESD and capacitive coupling events. IC Role / Device Role / Timing Role: Final-stage TVS on output rail, positioned after bulk capacitance to suppress residual ringing and contact discharge. Use Value: Fast <1 ns response ensures clamping occurs before downstream USB-PD or DC-DC controller ICs experience overstress. |
Use Scenario: Installed on -48 V DC distribution boards in telecom cabinets to mitigate lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Primary surge suppression device on feed lines entering remote radio units (RRUs). Use Value: 600 W rating supports coordination with upstream gas discharge tubes (GDTs) in hybrid protection schemes per ITU-T K.20. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same SMB package, but lower PPPM = 400 W; VC = 19.9 V @ 21.7 A | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not suitable for IEC 61000-4-5 Level 3+ | Select when cost sensitivity outweighs surge margin, and system-level testing confirms 400 W sufficiency. |
| 1.5SMC12A | Higher-power SMC package (same VBR); PPPM = 1500 W; VC = 19.9 V @ 75.4 A | Requires larger PCB area (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); better for high-reliability telecom infrastructure | Choose when board space permits and higher surge immunity (e.g., outdoor base stations) is mandatory. |
Compared with SMAJ12A and 1.5SMC12A, the P6SMB12A-M3/5B delivers optimal balance of 600 W surge capability, compact SMB footprint, and halogen-free compliance - making it preferred for space-constrained automotive and industrial modules where MSL Level 1 and AEC-Q101 readiness matter.
Availability
P6SMB12A-M3/5B is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, consumer power adapter outputs, and telecom DC distribution requiring stable component supply, consistent halogen-free compliance, and full traceability.
Supply support for P6SMB12A-M3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets board-level transient suppression in automotive, industrial, and telecom systems, engineered for high pulse power density, low clamping voltage, and robust manufacturability in automated SMT lines.
FAQ
What is the maximum clamping voltage of the P6SMB12A-M3/5B under surge conditions?
The P6SMB12A-M3/5B clamps to a maximum of 16.7 V when subjected to its rated peak pulse current of 35.9 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and represents the highest voltage the protected circuit will experience during a full-power transient event. The P6SMB12A-M3/5B achieves this with low incremental surge resistance, ensuring minimal overshoot beyond the specified VC.
Is the P6SMB12A-M3/5B suitable for automotive applications?
Yes - the P6SMB12A-M3/5B is halogen-free and RoHS-compliant (M3 suffix), and an AEC-Q101 qualified version is available under ordering code P6SMB12AHM3_B/5B. While the base P6SMB12A-M3/5B itself is commercial-grade, its construction (glass-passivated junction, MSL Level 1, 150 °C TJ max) meets foundational requirements for under-hood and cabin electronics. For certified automotive use, specify the HM3_B variant.
What does the "/5B" suffix indicate in P6SMB12A-M3/5B?
The "/5B" suffix denotes packaging: 13-inch diameter plastic tape and reel containing 3200 units. This contrasts with "/52", which indicates a 7-inch reel with 750 units. Both share identical electrical and thermal specifications; the /5B format supports high-volume SMT assembly lines requiring extended reel life and reduced changeover frequency. The P6SMB12A-M3/5B remains functionally identical to other P6SMB12A-M3 variants.
How does the P6SMB12A-M3/5B compare to bidirectional TVS diodes like P6SMB12CA?
The P6SMB12A-M3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply to GND), offering tighter VBR tolerance and lower VC than its bidirectional counterpart P6SMB12CA (which has symmetric breakdown in both directions). The P6SMB12CA is used in AC-coupled or floating signal lines. Using P6SMB12A-M3/5B on AC paths would cause forward conduction; always match polarity configuration to circuit topology.
What is the thermal resistance and how does it affect layout for the P6SMB12A-M3/5B?
The P6SMB12A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To achieve rated 600 W pulse power, the datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size or omitting thermal vias increases junction temperature during repetitive surges, potentially degrading clamping consistency and lifetime. The P6SMB12A-M3/5B must be laid out per Vishay's recommended pad dimensions to maintain specification compliance.
P6SMB12A-M3/5B 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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB12A-M3/5B FAQ
1.How can I place an order for P6SMB12A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12A-M3/5B 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 P6SMB12A-M3/5B reliable?
The price and inventory of P6SMB12A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB12A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12A-M3/5B?
P6SMB12A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12A-M3/5B 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 P6SMB12A-M3/5B?
For technical support, including P6SMB12A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12A-M3/5B requirements.
6.How does Aetrix verify that P6SMB12A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB12A-M3/5B 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 P6SMB12A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB12A-M3/5B?
All P6SMB12A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12A-M3/5B, 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 P6SMB12A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB12A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12A-M3/5B Tags
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