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Vishay General Semiconductor - Diodes Division P6SMB33AHE3/5B
- Part No.:
- P6SMB33AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHE3/5B.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,133
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Product details
Overview
P6SMB33AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping transient overvoltages on power and signal lines. It features a 33 V standoff voltage (VWM), 34.7 V maximum breakdown voltage (VBR), 45.7 V clamping voltage at 13.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB33AHE3/5B datasheet, P6SMB33AHE3/5B pinout, P6SMB33AHE3/5B application, or P6SMB33AHE3/5B equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and RoHS-compliant matte tin-plated terminals suitable for automated SMT assembly and high-reliability end equipment.
Technical Context
The P6SMB33AHE3/5B operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for single-polarity transients on DC rails or unidirectional data lines. Its junction is glass passivated for stable leakage performance and robust surge handling under repetitive 0.01% duty cycle conditions.
Thermal design relies on its RθJA of 100 °C/W and RθJL of 20 °C/W, requiring minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 600 W pulse dissipation. It meets MSL Level 1 per J-STD-020 with 260 °C peak reflow profile compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR @ IT = 1.0 mA | 31.4–34.7 V - breakdown threshold range; ensures reliable turn-on during fast transients without premature conduction. |
| VC @ IPPM = 13.1 A | 45.7 V - clamped voltage under 10/1000 μs surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 600 W - peak pulse power rating; supports robust protection against lightning-induced surges and inductive switching spikes. |
| IPPM | 13.1 A - peak pulse current capacity at rated clamping voltage; sets minimum surge energy handling capability. |
| Leakage ID @ VWM | 1.0 μA - ultra-low reverse leakage at standoff voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded - must be routed with low-inductance path to reference plane. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return; forms complete clamping path - requires minimal trace inductance for effective suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across life and temperature - critical for long-term protection integrity in harsh environments. |
| 600 W 10/1000 μs pulse rating | Handles common IEC 61000-4-5 Level 3/4 surges without degradation - eliminates need for external series impedance in many front-end designs. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning - reduces manufacturing complexity and cost. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during clamping - preserves margin for 3.3 V/5 V/12 V logic and power devices downstream. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 28.2 V. Use Value: Limits peak rail voltage to ≤45.7 V during 10/1000 μs pulses, preventing damage to LDOs, microcontrollers, and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at sensor connector to suppress ESD and field-wiring induced transients on 4–20 mA or 0–10 V lines. Use Value: With 1.0 μA leakage at 28.2 V, it avoids signal offset errors while clamping >1 kV ESD events per IEC 61000-4-2. |
| DC Motor Drive Gate Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding N-channel MOSFET gate drivers from inductive kickback during motor commutation. IC Role / Device Role / Timing Role: Placed between gate and source to clamp negative-going transients below -0.7 V and positive spikes above VGS(max). Use Value: Fast response (<1 ns) and low VC ensure gate oxide remains within safe operating area during rapid dV/dt events. |
Use Scenario: Front-end protection for Ethernet PHY or PoE-powered line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Used in conjunction with GDTs or polymer PTCs to absorb residual energy after coarse-stage suppression. Use Value: 600 W rating and 45.7 V clamping enable coordination with upstream protectors to meet GR-1089-CORE Level 3 requirements. |
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, identical VWM/VBR/VC, but not AEC-Q101 qualified; lower surge rating (400 W). | Limited to commercial-grade consumer or office equipment where automotive qualification is unnecessary. | Select when cost sensitivity outweighs automotive reliability requirements and surge energy stays below 400 W. |
| 1.5SMC33A | Higher package thermal resistance (RθJA ≈ 125 °C/W); same electrical specs but larger SMC (DO-214AB) footprint. | Requires PCB layout change; better suited for higher average power dissipation scenarios with heatsinking. | Choose only if existing board uses SMC footprint or thermal management demands lower junction rise per watt. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, the P6SMB33AHE3/5B uniquely combines AEC-Q101 qualification, 600 W pulse rating, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial designs requiring validated long-term surge resilience.
Availability
P6SMB33AHE3/5B is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, DC motor drive circuits, and telecom line card protection requiring stable component supply and full traceability.
Supply support for P6SMB33AHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was developed for high-energy transient suppression in compact SMT designs, targeting automotive, industrial, and communications systems where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of the P6SMB33AHE3/5B under maximum rated surge current?
The P6SMB33AHE3/5B has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream components like microcontrollers or gate drivers remain within absolute maximum ratings.
Is the P6SMB33AHE3/5B suitable for automotive applications?
Yes, the P6SMB33AHE3/5B is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's official datasheet revision 09-Jan-2024. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation - making P6SMB33AHE3/5B appropriate for under-hood, infotainment, and ADAS subsystems where reliability under thermal and electrical stress is essential.
What does the "5B" in P6SMB33AHE3/5B signify?
The "5B" denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 3200 units. This format is optimized for high-volume automated SMT placement. The "HE3" portion confirms RoHS-compliance and AEC-Q101 qualification, while "P6SMB33A" identifies the 33 V unidirectional TVS variant within the P6SMB family - all elements are manufacturer-defined ordering codes per Vishay's official documentation.
How does the P6SMB33AHE3/5B compare to bidirectional TVS diodes like P6SMB33CA?
The P6SMB33AHE3/5B is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6SMB33CA is bidirectional with no polarity marking and symmetric clamping in both directions. P6SMB33AHE3/5B offers tighter VBR tolerance (31.4–34.7 V vs. 31.4–37.1 V for the CA version) and is specified for DC-biased lines; P6SMB33CA suits AC-coupled or floating signal paths where polarity reversal may occur.
What is the maximum operating temperature for the P6SMB33AHE3/5B?
The P6SMB33AHE3/5B has a maximum junction temperature (TJ) of +150 °C and an operating junction/storage temperature range of –65 °C to +150 °C. This allows deployment in under-hood automotive environments and high-ambient industrial enclosures. Derating curves in the datasheet confirm usable power dissipation down to ambient temperatures up to +125 °C when mounted on recommended 0.2" × 0.2" copper pads.
P6SMB33AHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33AHE3/5B FAQ
1.How can I place an order for P6SMB33AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHE3/5B 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 P6SMB33AHE3/5B reliable?
The price and inventory of P6SMB33AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB33AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHE3/5B?
P6SMB33AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHE3/5B 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 P6SMB33AHE3/5B?
For technical support, including P6SMB33AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHE3/5B requirements.
6.How does Aetrix verify that P6SMB33AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHE3/5B 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 P6SMB33AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB33AHE3/5B?
All P6SMB33AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHE3/5B, 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 P6SMB33AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB33AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHE3/5B Tags
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