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Vishay General Semiconductor - Diodes Division P6SMB33AHM3/H
- Part No.:
- P6SMB33AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHM3/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB33AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 33 V breakdown voltage (VBR = 31.4–34.7 V at IT = 1.0 mA), 28.2 V stand-off voltage (VWM), and clamps transients to ≤45.7 V at 13.1 A peak pulse current (IPPM) under 10/1000 µs waveform - ideal for protecting MOSFET gates and sensor signal lines in industrial power supplies.
For engineers reviewing the P6SMB33AHM3/H datasheet, P6SMB33AHM3/H pinout, P6SMB33AHM3/H application, or P6SMB33AHM3/H equivalent, this device delivers AEC-Q101-qualified reliability in halogen-free, RoHS-compliant construction with MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility - critical for automotive-grade embedded power rail protection and high-volume automated assembly.
Technical Context
The P6SMB33AHM3/H operates as a unidirectional clamping TVS diode, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and low incremental surge resistance. Its 600 W peak pulse power rating (10/1000 µs) and 150 °C maximum junction temperature support repetitive transient suppression in DC power rails and low-speed data lines.
Designed for surface-mount implementation on 0.2" × 0.2" copper pads, it exhibits thermal resistance of RθJA = 100 °C/W and RθJL = 20 °C/W, enabling stable operation without external heatsinking in ambient temperatures up to +85 °C. The cathode band marking confirms polarity for correct orientation during PCB layout and automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 31.4–34.7 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 28.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | ≤45.7 V at 13.1 A IPPM - ensures protected circuitry sees no more than 45.7 V during worst-case surge |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains high-energy transients common in inductive switching and ESD events |
| Package | SMB (DO-214AA) - low-profile, JEDEC-standard surface-mount package compatible with automated pick-and-place and reflow |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Moisture Sensitivity | MSL Level 1 (per J-STD-020) - supports unlimited floor life and standard 260 °C lead-free reflow without baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by a single band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Connected to lower-potential side (e.g., ground or return path) during clamping; must be routed with low-inductance trace |
| Cathode | Current exit point in forward conduction mode | Connected to protected line (e.g., 24 V rail or sensor input); band-marked end determines PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables reliable suppression of high-energy transients from relay coil flyback or lightning-induced surges in industrial controls |
| Glass passivated chip junction | Ensures long-term stability and low leakage (<1.0 µA at VWM) across temperature and humidity stress conditions |
| Halogen-free, RoHS-compliant (HM3) | Meets automotive and industrial environmental compliance requirements without compromising thermal or electrical performance |
| Low profile SMB package | Reduces board space vs. larger DO-15 or SMA packages while maintaining 600 W capability - ideal for dense power modules |
| Fast response time (<1 ns) | Clamps voltage spikes before downstream ICs (e.g., microcontrollers or ADCs) experience latch-up or gate oxide damage |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing circuits against inductive kickback from brushed DC motor commutation. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MOSFET gate and source to clamp negative-going transients below -0.7 V and prevent gate oxide rupture. Use Value: Limits gate-source voltage to safe levels using 28.2 V stand-off and 45.7 V clamping - preserving driver IC lifetime under repeated 100 V/10 µs spikes. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start surges in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Standoff-rated TVS on power input rail (VCC) of BCUs to absorb 35 V/100 ms load dump pulses per ISO 7637-2. Use Value: Withstands 600 W peak power and AEC-Q101 qualification, ensuring fail-safe operation across -40 °C to +125 °C ambient ranges. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
|
Use Scenario: Input-stage protection for AC/DC adapters and PoE-powered devices exposed to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS shunting transients from bridge rectifier output to ground before bulk capacitor and controller IC. Use Value: Clamps 13.1 A surge to ≤45.7 V within nanoseconds, preventing overvoltage stress on 65 V-rated PWM controllers and optocouplers. |
Use Scenario: Overvoltage hardening of microcontroller reset lines and button interface circuits in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA max) TVS on 3.3 V or 5 V logic rails to suppress ESD and contact bounce spikes without affecting pull-up functionality. Use Value: Maintains <1 µA reverse leakage at 28.2 V, eliminating false resets or phantom keypresses while clamping 8 kV HBM ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5B | Same SMB package, 33 V VBR, but rated for 400 W PPPM (vs. 600 W) and not AEC-Q101 qualified | Limited to commercial-grade consumer/industrial use; unsuitable for automotive underhood environments | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC33A | Higher-power SMC package (same VBR), 1500 W PPPM, but 2.5× larger footprint and higher RθJA (70 °C/W) | Used where extreme surge immunity is required and board space allows larger package | Choose only if system-level testing confirms need for >600 W clamping capacity and thermal budget permits SMC footprint |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, the P6SMB33AHM3/H uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB footprint, and halogen-free compliance - making it optimal for space-constrained, automotive-qualified, and high-reliability industrial designs requiring verified long-term stability.
Availability
P6SMB33AHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB33AHM3/H 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, standardized transient suppression in surface-mount power and signal line protection across harsh environments.
FAQ
What is the maximum clamping voltage of the P6SMB33AHM3/H under a 10/1000 µs surge?
The P6SMB33AHM3/H clamps to a maximum of 45.7 V at its rated peak pulse current of 13.1 A under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and reflects worst-case behavior measured per JEDEC standards - critical for verifying voltage margins of downstream ICs like microcontrollers or gate drivers in the protected circuit.
Is the P6SMB33AHM3/H suitable for automotive applications?
Yes, the P6SMB33AHM3/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature operating life, and mechanical shock - specifically validated for use in automotive body electronics, infotainment power rails, and sensor interfaces where reliability under vibration and thermal extremes is mandatory.
What does the "H" in P6SMB33AHM3/H indicate in the ordering code?
The "H" suffix in P6SMB33AHM3/H specifies the packaging format: 7-inch diameter plastic tape and reel containing 750 units. This is the standard delivery mode for high-volume SMT production and ensures compatibility with most automated pick-and-place equipment used in contract manufacturing and OEM assembly lines.
How does the P6SMB33AHM3/H differ from bidirectional variants like P6SMB33CA?
The P6SMB33AHM3/H is unidirectional, with a defined cathode band and asymmetric conduction - it blocks reverse voltage up to 28.2 V and clamps positive transients only. In contrast, P6SMB33CA is bidirectional, offering symmetrical clamping for AC-coupled lines or differential buses, but lacks polarity marking and has different VBR/VWM values (e.g., 37.1–41.0 V min/max). Selection depends strictly on circuit topology and surge polarity requirements.
What is the thermal resistance from junction to ambient for the P6SMB33AHM3/H?
The P6SMB33AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking and defines the maximum power dissipation (5.0 W at TA = 50 °C) before exceeding the 150 °C maximum junction temperature - essential for thermal design validation in enclosed enclosures.
P6SMB33AHM3/H 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33AHM3/H FAQ
1.How can I place an order for P6SMB33AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHM3/H 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 P6SMB33AHM3/H reliable?
The price and inventory of P6SMB33AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB33AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHM3/H?
P6SMB33AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHM3/H 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 P6SMB33AHM3/H?
For technical support, including P6SMB33AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHM3/H requirements.
6.How does Aetrix verify that P6SMB33AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHM3/H 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 P6SMB33AHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB33AHM3/H?
All P6SMB33AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHM3/H, 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 P6SMB33AHM3/H part is unused and in its original packaging.
Return procedure for P6SMB33AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHM3/H Tags
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Diodes Incorporated
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