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Vishay General Semiconductor - Diodes Division P6SMB36A-M3/52
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- Part No.:
- P6SMB36A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36A-M3/52.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,809
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Product details
Overview
P6SMB36A-M3/52 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 36 V breakdown voltage (VBR = 34.2–37.8 V at IT = 1.0 mA), 30.8 V stand-off voltage (VWM), 49.9 V maximum clamping voltage (VC) at 12.0 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 P6SMB36A-M3/52 datasheet, P6SMB36A-M3/52 pinout, P6SMB36A-M3/52 application, or P6SMB36A-M3/52 equivalent, this part delivers verified transient suppression performance in compact SMB packaging with halogen-free, RoHS-compliant construction and J-STD-020 MSL Level 1 moisture sensitivity rating for high-reliability reflow assembly.
Technical Context
The P6SMB36A-M3/52 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to shunt surge energy away from protected circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) and consistent clamping under repetitive 0.01% duty cycle pulses.
Thermally, it exhibits RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting operation up to TJ = +150 °C. The cathode band marking identifies polarity, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 34.2–37.8 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage protection |
| Stand-off Voltage VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | 49.9 V at 12.0 A IPPM - limits transient voltage seen by downstream components during 10/1000 µs surges |
| Peak Pulse Power PPPM | 600 W - sustains single 10/1000 µs transients without degradation under derated thermal conditions |
| Peak Pulse Current IPPM | 12.0 A - maximum surge current the device safely clamps at rated VC |
| Operating Temperature Range | −65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and reflow, 0.220" × 0.130" body size |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (reverse-biased during clamping) | Connected to protected line's lower-potential side; forms current path to ground during transient |
| Cathode | Clamping output terminal (marked with band) | Connected to system ground or low-impedance return path; sinks surge current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot across protected devices, reducing stress on downstream ICs and MOSFETs |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising reliability |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning, simplifying manufacturing flow |
| 150 °C max junction temperature | Allows operation in high-ambient environments such as engine control units and motor drives |
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 ESD-induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp negative-going transients while blocking normal operating voltage. Use Value: Limits transient voltage to ≤49.9 V, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor interface ICs per ISO 7637-2 Pulse 1/2a requirements. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Mounted at connector entry point to divert 600 W surge energy before reaching optocoupler or microcontroller input pins. Use Value: Maintains signal integrity by clamping transients within 1 ns, ensuring no false triggering of 24 V DC digital inputs during factory automation events. |
| Power Supply Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Secondary-side overvoltage suppression on 36 V DC power rails feeding motor drivers or LED arrays in battery-powered tools. IC Role / Device Role / Timing Role: Parallel-connected TVS referenced to common ground, absorbing energy from flyback spikes generated by brushed DC motors. Use Value: Withstands repetitive 12 A surges at 0.01% duty cycle, extending power stage lifetime without requiring active crowbar circuits. |
Use Scenario: Reverse-polarity and ESD protection on VBUS lines of portable audio/video accessories with micro-USB connectors. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between VBUS and ground to suppress ±15 kV HBM ESD and accidental −5 V reverse connection. Use Value: Delivers <1 µA leakage at 30.8 V, preserving battery life while meeting IEC 61000-4-2 Level 4 immunity without adding series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/52 | Same VBR range (34.2–37.8 V), but lower PPPM (400 W) and higher VC (58.1 V at 6.9 A); SMA package (smaller footprint, higher RθJA) | Less suitable for high-energy surges (e.g., IEC 61000-4-5); preferred where board space is constrained and surge levels are moderate | Select when cost or footprint is prioritized over 600 W surge handling; verify thermal margin with RθJA = 140 °C/W |
| 1.5SMC36A | Same electrical specs (VBR, VC, PPPM), but SMC (DO-214AB) package - 0.295" × 0.230", higher power dissipation margin and lower RθJA (70 °C/W) | Better suited for high-temperature or high-duty-cycle environments; requires larger PCB area | Choose for enhanced thermal performance in enclosed enclosures or continuous surge exposure scenarios |
Compared with SMAJ36A-E3/52 and 1.5SMC36A, the P6SMB36A-M3/52 offers optimal balance of 600 W surge capability, SMB footprint compatibility, and halogen-free compliance - making it ideal for automotive-grade designs requiring AEC-Q101-qualified alternatives (e.g., P6SMB36AHM3_B/H) without layout redesign.
Availability
P6SMB36A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, DC power rail protection, and consumer USB port hardening requiring stable component supply and halogen-free compliance.
Supply support for P6SMB36A-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance in compact surface-mount packages with extended temperature and surge endurance.
FAQ
What is the maximum clamping voltage of the P6SMB36A-M3/52 under a 10/1000 µs surge?
The P6SMB36A-M3/52 has a maximum clamping voltage (VC) of 49.9 V at 12.0 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 represents the upper voltage limit imposed on protected circuitry during transient events. The P6SMB36A-M3/52 maintains this clamping performance across its full operating temperature range.
Is the P6SMB36A-M3/52 suitable for automotive applications?
Yes - the P6SMB36A-M3/52 is halogen-free and RoHS-compliant (M3 suffix), and an AEC-Q101-qualified variant (P6SMB36AHM3_B/H) is available for automotive use. While the base P6SMB36A-M3/52 itself is commercial-grade, its 150 °C junction rating, robust 600 W surge capability, and MSL Level 1 reflow compatibility make it widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power supplies. For qualified applications, specify the HM3_B/H version.
How does the P6SMB36A-M3/52 differ from bidirectional TVS diodes like P6SMB36CA?
The P6SMB36A-M3/52 is unidirectional and conducts only during reverse-bias overvoltage events, with polarity marked by a cathode band. In contrast, P6SMB36CA is bidirectional and clamps transients of either polarity, with no polarity marking. The P6SMB36A-M3/52 offers lower leakage (<1.0 µA at 30.8 V) and is preferred for DC power rail protection, whereas P6SMB36CA suits AC-coupled or floating signal lines like RS-485. Their VBR and VC values differ slightly due to internal structure.
What is the thermal resistance of the P6SMB36A-M3/52, and how does it affect PCB layout?
The P6SMB36A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation under repeated surges, PCB layout must follow Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle events - so the P6SMB36A-M3/52 requires strict adherence to the specified mounting footprint.
Does the P6SMB36A-M3/52 require derating at elevated ambient temperatures?
Yes - the P6SMB36A-M3/52 must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its 600 W peak pulse power rating drops to approximately 420 W, and its 12.0 A IPPM reduces proportionally. Derating ensures junction temperature remains below 150 °C. Designers must apply this curve when sizing the P6SMB36A-M3/52 for high-temperature enclosures or densely packed boards where airflow is limited.
P6SMB36A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P6SMB36A-M3/52 FAQ
1.How can I place an order for P6SMB36A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36A-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 P6SMB36A-M3/52 reliable?
The price and inventory of P6SMB36A-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 P6SMB36A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB36A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36A-M3/52?
P6SMB36A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36A-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 P6SMB36A-M3/52?
For technical support, including P6SMB36A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36A-M3/52 requirements.
6.How does Aetrix verify that P6SMB36A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB36A-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 P6SMB36A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB36A-M3/52?
All P6SMB36A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36A-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 P6SMB36A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB36A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36A-M3/52 Tags
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