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Vishay General Semiconductor - Diodes Division P6SMB33AHM3/I
- Part No.:
- P6SMB33AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHM3/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,908
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Product details
Overview
P6SMB33AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. 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), 45.7 V maximum clamping voltage (VC) at 13.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB33AHM3/I datasheet, P6SMB33AHM3/I pinout, P6SMB33AHM3/I application, or P6SMB33AHM3/I equivalent, this device is selected for robust ESD and surge protection where low-profile SMB (DO-214AA) mounting, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and stable clamping under repetitive transients are required.
Technical Context
The P6SMB33AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of fast-rising transients from inductive switching or lightning-induced surges.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = 150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification - validated for automotive-grade reliability without derating in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage detection |
| VWM | 28.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 45.7 V at 13.1 A - peak clamped voltage during 600 W transient, limiting stress on downstream components |
| PPPM | 600 W with 10/1000 μs waveform - standardized surge energy handling capacity per industry test method |
| IFSM | 100 A (8.3 ms half-sine) - surge current tolerance for unidirectional forward conduction events |
| TJ max | +150 °C - enables use in under-hood automotive or high-ambient industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint with 0.220" × 0.130" body, optimized for automated placement and thermal pad layout |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or low-side return path; conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); avalanches into conduction when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3) | Validated for automotive electronics including engine control units and ADAS sensors requiring long-term reliability |
| 600 W peak pulse power | Withstands repeated 10/1000 μs transients at 0.01% duty cycle - suitable for industrial motor drive snubbing |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) across temperature and lifetime |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Halogen-free & RoHS | Meets environmental compliance requirements for global OEM supply chains and end-of-life recycling |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V DC input rails in PLC modules against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input rail and ground. Use Value: Limits transient voltage to ≤45.7 V, preventing damage to upstream DC-DC controllers and downstream logic ICs. |
Use Scenario: Safeguarding CAN/LIN bus lines and analog sensor outputs (e.g., pressure, temperature) in vehicle ECUs. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point to shunt ESD and coupled noise. Use Value: Clamps 8 kV contact ESD pulses within nanoseconds while maintaining <1.0 μA leakage at 24 V nominal operation. |
| Consumer Appliance Motor Control | Telecom Power Entry Protection |
|
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response transient suppressor across motor terminals or H-bridge supply rails. Use Value: Absorbs 600 W surge energy without degradation, preserving gate drivers and microcontroller I/O integrity. |
Use Scenario: Front-end protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on telecom lines. IC Role / Device Role / Timing Role: Primary-level unidirectional clamp on secondary-side DC output before regulation stage. Use Value: Maintains 28.2 V standoff while clamping 10/1000 μs surges to 45.7 V - compatible with 36 V-rated DC-DC inputs. |
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 lower PPPM = 400 W and no AEC-Q101 qualification | Not rated for automotive under-hood use; limited to commercial-grade consumer/industrial systems | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is not required |
| 1.5SMC33A | Higher-power SMC package (7.1 mm × 6.2 mm), same VBR/VC, PPPM = 1500 W, but larger footprint and no HM3 halogen-free option | Used where higher surge margin is needed and PCB space allows larger package | Choose when system-level surge testing requires >600 W capability and layout permits SMC footprint |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, the P6SMB33AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and 600 W surge rating in the compact SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring certified reliability.
Availability
P6SMB33AHM3/I is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, consumer appliance motor drives, and telecom power entry circuits requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB33AHM3/I 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, efficiency, and application-specific performance.
The P6SMB Series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 validation are critical design requirements.
FAQ
What is the breakdown voltage range of the P6SMB33AHM3/I?
The P6SMB33AHM3/I has a specified breakdown voltage (VBR) range of 31.4 V to 34.7 V at a test current of 1.0 mA. This tight tolerance ensures predictable clamping behavior across manufacturing lots and temperature extremes, directly supporting reliable overvoltage protection in 24 V and 32 V systems where the P6SMB33AHM3/I is commonly deployed.
Does the P6SMB33AHM3/I meet automotive qualification standards?
Yes, the P6SMB33AHM3/I carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This certification validates its suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces - with testing covering temperature cycling, humidity bias, and mechanical shock per AEC-Q101 requirements.
What is the maximum clamping voltage of the P6SMB33AHM3/I under surge conditions?
The P6SMB33AHM3/I clamps to a maximum of 45.7 V at its rated peak pulse current of 13.1 A (10/1000 μs waveform). This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events, ensuring compatibility with 36 V-rated ICs and providing a 10+ V safety margin above its 28.2 V stand-off voltage.
How does the P6SMB33AHM3/I differ from bidirectional TVS diodes like P6SMB33CA?
The P6SMB33AHM3/I is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, P6SMB33CA is bidirectional and symmetrical - suitable for AC lines or differential data buses. The P6SMB33AHM3/I offers lower leakage and higher surge current capability in DC applications where polarity is fixed and forward conduction must be avoided.
What package type and mounting compatibility does the P6SMB33AHM3/I support?
The P6SMB33AHM3/I uses the SMB (DO-214AA) surface-mount package - measuring 4.57 mm × 3.94 mm × 2.20 mm - with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It supports standard reflow profiles (MSL Level 1, peak 260 °C) and is optimized for high-speed automated placement on PCBs with 0.2" × 0.2" copper pads per terminal.
P6SMB33AHM3/I 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/I FAQ
1.How can I place an order for P6SMB33AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHM3/I 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/I reliable?
The price and inventory of P6SMB33AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB33AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHM3/I?
P6SMB33AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHM3/I 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/I?
For technical support, including P6SMB33AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHM3/I requirements.
6.How does Aetrix verify that P6SMB33AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB33AHM3/I?
All P6SMB33AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHM3/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB33AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHM3/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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