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Vishay General Semiconductor - Diodes Division P6SMB33AHM3_A/I
- Part No.:
- P6SMB33AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHM3_A/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,589
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Product details
Overview
P6SMB33AHM3_A/I 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 33 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 45.7 V maximum clamping voltage at 13.1 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P6SMB33AHM3_A/I datasheet, P6SMB33AHM3_A/I pinout, P6SMB33AHM3_A/I application, or P6SMB33AHM3_A/I equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, thermal derating above 25 °C, AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds its specified VBR range (37.1–41.0 V). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 28.2 V), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The device delivers 600 W peak pulse power handling under standardized 10/1000 μs surge conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). Its cathode-band polarity marking enables correct orientation during PCB layout and automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for safe DC bias on protected line. |
| VBR @ IT = 1 mA | 37.1–41.0 V - Measured breakdown threshold defining turn-on precision; tight 10% tolerance ensures predictable clamping onset. |
| VC @ IPPM = 13.1 A | 45.7 V - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream circuitry. |
| PPPM | 600 W - Peak transient power dissipation capacity; defines survivability against lightning-induced or inductive-switching surges. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial settings. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability per stress test requirements including HTOL, TC, and HAST; suffix HM3 denotes halogen-free RoHS compliance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping event. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail or CAN_H); initiates avalanche conduction when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without derating. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics including body control modules, ADAS sensors, and infotainment power rails. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture sensitivity concerns or pre-bake requirements. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, with <1.0 μA leakage at VWM for minimal standby power loss. |
| SMB (DO-214AA) footprint | Standardized 3.94 mm × 2.20 mm outline compatible with high-volume SMT lines and existing PCB land patterns. |
Applications
| Automotive Sensor Power Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of radar or camera modules exposed to load-dump transients in vehicle battery systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between fused 24 V rail and LDO input, absorbing >100 V/100 ms load dump events. Use Value: Limits voltage seen by downstream regulators to ≤45.7 V, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers connected to 24 V field sensors. IC Role / Device Role / Timing Role: Reverse-biased TVS on each opto-isolator input line, shunting inductive kickback from solenoid or relay coils. Use Value: Clamps transients within 1 ns response time to prevent false triggering or isolation barrier breakdown in DIN-rail mounted controllers. |
| Telecom Power Interface | Consumer Appliance Motor Drive |
Use Scenario: Shielding PoE-powered Ethernet switch ports from ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V DC input stage, coordinated with primary GDT and common-mode chokes. Use Value: Provides precise 45.7 V clamping to protect IEEE 802.3af/at PD controller ICs rated for 57 V absolute maximum input. |
Use Scenario: Suppressing commutation spikes on BLDC motor driver power rails in smart home appliances. IC Role / Device Role / Timing Role: Unidirectional TVS across DC bus capacitors, diverting energy from MOSFET switching transitions. Use Value: Reduces radiated emissions by limiting dv/dt and prevents gate oxide stress on half-bridge drivers during regeneration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5B | Same VWM/VBR/VC specs but lower PPPM (400 W), non-AEC-Q101, standard M3 suffix only. | Limited to commercial-grade industrial or consumer use; not validated for automotive temperature cycling or humidity testing. | Select when cost sensitivity outweighs automotive qualification needs and surge threat level is below ISO 7637-2 Pulse 5b. |
| 1.5SMC33A | Higher package thermal resistance (RθJA = 125 °C/W), same 600 W rating but larger SMC (DO-214AB) footprint. | Requires PCB redesign due to 7.11 mm × 6.22 mm outline; better suited for high-power industrial AC/DC front-ends. | Choose only if board space allows larger package and higher junction-to-ambient thermal impedance is acceptable. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, P6SMB33AHM3_A/I uniquely combines AEC-Q101 qualification, SMB footprint compactness, and full 600 W surge capability - making it optimal for space-constrained automotive and industrial edge nodes where reliability and layout compatibility are jointly critical.
Availability
P6SMB33AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, telecom power interfaces, and consumer appliance motor drives requiring stable component supply with guaranteed long-term manufacturability.
Supply support for P6SMB33AHM3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for fast response, repeatable clamping, and compatibility with modern SMT manufacturing processes.
FAQ
What is the clamping voltage of P6SMB33AHM3_A/I at its rated peak pulse current?
The P6SMB33AHM3_A/I has a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current (IPPM) of 13.1 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C on 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB33AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is P6SMB33AHM3_A/I qualified for automotive applications?
Yes, P6SMB33AHM3_A/I is AEC-Q101 qualified - confirmed by its HM3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). It meets stress test requirements for high-temperature operating life, temperature cycling, and humidity exposure, making it suitable for under-hood and cabin-mounted automotive electronics including ADAS sensors and body control units.
What does the "HM3" suffix indicate in P6SMB33AHM3_A/I?
The "HM3" suffix in P6SMB33AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates AEC-Q101 compliance, "M3" specifies halogen-free and RoHS-compliant materials, and the "_A/I" denotes packaging in 13" tape-and-reel format (3200 units per reel). This distinguishes it from commercial-grade variants like M3-only or E3-suffixed parts.
How does P6SMB33AHM3_A/I compare to bidirectional TVS diodes in the same series?
P6SMB33AHM3_A/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply rails), offering tighter VBR tolerance and lower leakage than bidirectional equivalents like P6SMB33CAHM3_A/I. Bidirectional versions support AC-coupled or polarity-agnostic signals but exhibit higher leakage and symmetric clamping in both directions - unsuitable where reverse conduction must be blocked.
What PCB pad layout is recommended for optimal thermal performance of P6SMB33AHM3_A/I?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P6SMB33AHM3_A/I to achieve rated 600 W pulse power and proper thermal dissipation. The SMB (DO-214AA) package's thermal resistance (RθJA = 100 °C/W) assumes this pad size; smaller pads increase junction temperature and require derating per Figure 2 in the datasheet. Thermal vias under pads further improve heat transfer in multilayer boards.
P6SMB33AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB33AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHM3_A/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_A/I reliable?
The price and inventory of P6SMB33AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB33AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHM3_A/I?
P6SMB33AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHM3_A/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_A/I?
For technical support, including P6SMB33AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB33AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB33AHM3_A/I?
All P6SMB33AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB33AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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