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Vishay General Semiconductor - Diodes Division P6SMB33AHM3_A/H
- Part No.:
- P6SMB33AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHM3_A/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,643
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Product details
Overview
P6SMB33AHM3_A/H 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB33AHM3_A/H datasheet, P6SMB33AHM3_A/H pinout, P6SMB33AHM3_A/H application, or P6SMB33AHM3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−65 to +150 °C), and halogen-free RoHS compliance per ordering code HM3.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast transient suppression in DC power rails and low-voltage signal paths. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and low incremental surge resistance, enabling reliable response to ESD and inductive switching spikes.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports reflow soldering up to 260 °C peak. Its 600 W peak pulse rating is specified under derated conditions above TA = 25 °C, with thermal resistance from junction to ambient (100 °C/W) and junction to lead (20 °C/W) defining thermal management constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 28.2 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 31.4–34.7 V at 1 mA - Voltage at which device enters avalanche conduction; ensures precise overvoltage threshold activation. |
| VC (Clamping Voltage) | 45.7 V at 13.1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standard 10/1000 μs waveform; enables robust surge immunity. |
| TJ max. | +150 °C - Maximum allowable junction temperature; constrains power dissipation and PCB copper pad design. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air; requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated performance. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode identified by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Provides low forward voltage drop (VF = 3.5 V at 50 A) during surge conduction; must be routed to ground or return path. |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential side | Serves as reference node for clamping action; ties to supply rail or signal line requiring protection. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems without cascading devices. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs. |
| AEC-Q101 qualified (HM3 suffix) | Validates suitability for automotive powertrain and body electronics where long-term reliability under thermal cycling is mandatory. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without preconditioning or special handling requirements. |
| Glass-passivated junction | Ensures stable reverse leakage (<1.0 μA at VWM) across −65 to +150 °C, critical for low-power sensor interface protection. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Suppresses load-dump and alternator ripple transients on 24 V DC input rails feeding DC/DC converters and microcontrollers. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤45.7 V, preventing damage to 36 V-rated input stages of buck controllers and LDOs. |
Use Scenario: Protects LIN bus transceivers and LED driver ICs from ISO 7637-2 pulse 1/2a/5a transients in door module PCBs. IC Role / Device Role / Timing Role: Standoff-clamp TVS on VBAT line upstream of local regulators, responding to sub-100 ns spikes. Use Value: Maintains system uptime by absorbing 600 W surges without degradation, validated per AEC-Q101 stress profiles. |
| Consumer Appliance Motor Drive | Telecom PoE Interface |
|
Use Scenario: Shields MCU GPIOs and gate drivers from inductive kickback when controlling BLDC fans or compressors. IC Role / Device Role / Timing Role: Localized TVS on motor phase traces and control signal lines, mounted adjacent to connector entry points. Use Value: Clamps 13.1 A pulses to 45.7 V, preventing false triggering or latch-up in 3.3 V logic circuits sharing same ground plane. |
Use Scenario: Guards Ethernet PHY power pins (37–57 V) against lightning-induced surges entering via RJ45 magnetics. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PoE PD input, coordinated with secondary TVS and fuse for staged protection. Use Value: Withstands repeated 10/1000 μs surges up to 600 W while maintaining <1.0 μA leakage at 28.2 V, preserving standby power budget. |
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 VWM (28.2 V), identical SMB package, but lower PPPM (400 W) and higher VC (53.3 V at 7.5 A). | Not rated for AEC-Q101; limited to commercial-grade industrial use where automotive qualification is not required. | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary. |
| 1.5SMC33A | Higher package thermal resistance (RθJA = 125 °C/W), larger SMC (DO-214AB) footprint, same VWM/VC specs but lower surge current rating (12.3 A). | Requires larger PCB area and exhibits greater self-heating under repetitive surges; unsuitable for space-constrained automotive modules. | Choose only if existing layout uses SMC footprint and thermal derating can accommodate 25% lower power handling. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, P6SMB33AHM3_A/H delivers superior automotive qualification, higher surge power margin, and tighter thermal performance in the smallest standardized SMB outline - making it optimal for next-generation compact, high-reliability power interface designs.
Availability
P6SMB33AHM3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer appliance motor drives, and telecom PoE interfaces requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB33AHM3_A/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 diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-reliability environments - engineered for automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of P6SMB33AHM3_A/H at its rated peak pulse current?
The P6SMB33AHM3_A/H has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per terminal and represents the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is P6SMB33AHM3_A/H qualified for automotive applications?
Yes, P6SMB33AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its use in automotive body control, lighting, and infotainment systems.
What does the "HM3" suffix indicate in P6SMB33AHM3_A/H?
The "HM3" suffix in P6SMB33AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material standards, including JESD201 Class 2 whisker resistance and MSL Level 1 reflow capability up to 260 °C.
How does the thermal resistance of P6SMB33AHM3_A/H affect PCB layout?
P6SMB33AHM3_A/H has a typical RθJA of 100 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated 600 W pulse power, PCB layout must provide these minimum pad dimensions and avoid thermal isolation - insufficient copper area increases junction temperature and risks premature failure during repetitive surges.
Can P6SMB33AHM3_A/H replace P6SMB33A-E3 in an existing design?
P6SMB33AHM3_A/H is a direct functional replacement for P6SMB33A-E3 in terms of electrical specs and SMB package, but adds AEC-Q101 qualification and halogen-free materials. No PCB changes are needed, though designers should verify that the enhanced reliability and material compliance meet updated automotive or environmental requirements in the target application.
P6SMB33AHM3_A/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:
- 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/H FAQ
1.How can I place an order for P6SMB33AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHM3_A/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_A/H reliable?
The price and inventory of P6SMB33AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB33AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHM3_A/H?
P6SMB33AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHM3_A/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_A/H?
For technical support, including P6SMB33AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB33AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB33AHM3_A/H?
All P6SMB33AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for P6SMB33AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHM3_A/H Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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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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Diodes Incorporated
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