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Vishay General Semiconductor - Diodes Division P6SMB33AHE3_B/H
- Part No.:
- P6SMB33AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHE3_B/H.pdf
- Description:
- 600W,33V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,171
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Product details
Overview
P6SMB33AHE3_B/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 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 automotive and industrial power supplies.
For engineers reviewing the P6SMB33AHE3_B/H datasheet, P6SMB33AHE3_B/H pinout, P6SMB33AHE3_B/H application, or P6SMB33AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (indicated by HE3_B suffix), low incremental surge resistance, fast response time, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while the SMB package supports high thermal dissipation (RθJA = 100 °C/W) and meets MSL Level 1 per J-STD-020.
The device is rated for repetitive 10/1000 μs surges at 0.01% duty cycle and handles non-repetitive 8.3 ms half-sine forward surge up to 100 A (IFSM). Junction temperature range spans –65 °C to +150 °C, and it complies with RoHS and halogen-free requirements per Vishay's HE3 material categorization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at IT = 1.0 mA - defines precise avalanche onset window for reliable overvoltage triggering |
| VWM | 28.2 V - maximum continuous reverse operating voltage before leakage rises above 1.0 μA |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage during 600 W transient, limiting stress on downstream components |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform, enabling robust ESD and lightning surge immunity |
| IFSM | 100 A - single half-sine surge rating (8.3 ms), supporting high-energy inductive switching events |
| TJ max. | +150 °C - extended junction temperature capability for under-hood automotive and high-ambient industrial use |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
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 indicated by band marking; polarity is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or lower-potential rail; defines directionality of clamping action |
| Cathode | Avalanche conduction terminal / Clamping output | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating in standard PCB layouts |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced cracking or delamination |
| AEC-Q101 qualified (HE3_B suffix) | Validated for automotive powertrain and body electronics requiring zero-defect reliability and extended temperature operation |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during transient events, reducing risk of latch-up or gate oxide damage in protected ICs |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power rails and microcontroller supply inputs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤45.7 V during 13.1 A surges, preventing brownout or destruction of downstream PMICs and MCU regulators. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLC modules exposed to relay coil flyback. IC Role / Device Role / Timing Role: Standoff protector on sensor signal lines (e.g., 0–10 V or 4–20 mA) referenced to local ground. Use Value: Maintains <1.0 μA leakage at 28.2 V, preserving signal integrity while clamping 10/1000 μs spikes to safe levels for precision ADCs. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Line Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and AC/DC wall adapters subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5/9/15/20 V outputs before connector interface. Use Value: Responds in <1 ns to suppress fast-rising transients, with 45.7 V clamping ensuring compliance with UL 62368-1 secondary circuit limits. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Primary transient suppressor on DC input before PoE controller and DC-DC isolation stage. Use Value: Handles 600 W pulses without degradation, meeting IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) requirements for Class B equipment. |
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-E3/5T | Same SMB package, 33 V VBR, but rated for 400 W PPPM; no AEC-Q101 qualification | Lower surge capacity; suitable only for commercial-grade consumer or office equipment | Select when cost sensitivity outweighs automotive or industrial surge margin requirements |
| 1.5SMC33A | Higher-power SMC package (1500 W), same VBR range, but larger footprint and higher RθJA (60 °C/W) | Requires PCB area increase; better for high-repetition surge environments (e.g., motor drives) | Choose when system-level surge testing exceeds 600 W or when thermal management allows larger package |
Compared with SMAJ33A-E3/5T and 1.5SMC33A, the P6SMB33AHE3_B/H delivers optimal balance of AEC-Q101 reliability, compact SMB footprint, and verified 600 W surge handling - making it the preferred choice for space-constrained automotive and industrial designs where qualification and consistency are mandatory.
Availability
P6SMB33AHE3_B/H is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC sensor inputs, and telecom PoE equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB33AHE3_B/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 performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, low clamping ratios, and robust surge endurance in surface-mount form factors.
FAQ
What is the breakdown voltage tolerance of P6SMB33AHE3_B/H?
The P6SMB33AHE3_B/H has a breakdown voltage VBR specified from 31.4 V to 34.7 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 33 V rating. This tight tolerance ensures consistent clamping behavior across production lots and enables predictable system-level overvoltage protection design without margin over-engineering.
Is P6SMB33AHE3_B/H suitable for automotive applications?
Yes, P6SMB33AHE3_B/H is AEC-Q101 qualified (denoted by the HE3_B suffix) and tested for automotive-grade reliability including temperature cycling, highly accelerated life testing (HALT), and ESD. It is explicitly intended for under-hood and body electronics such as engine control modules, ADAS camera power supplies, and gateway ECUs where sustained operation from –40 °C to +125 °C ambient is required.
What is the maximum clamping voltage of P6SMB33AHE3_B/H under surge conditions?
The maximum clamping voltage VC of P6SMB33AHE3_B/H is 45.7 V at peak pulse current IPPM = 13.1 A, measured with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream components like 3.3 V or 5 V LDOs remain within absolute maximum ratings.
Does P6SMB33AHE3_B/H have a bidirectional variant?
No, P6SMB33AHE3_B/H is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the P6SMB33CAHE3_B/H variant (with "CA" suffix), which provides symmetrical clamping in both polarities and is used in AC-coupled or floating signal line protection where polarity reversal may occur.
What is the thermal resistance of P6SMB33AHE3_B/H in standard mounting conditions?
The typical junction-to-ambient thermal resistance RθJA of P6SMB33AHE3_B/H is 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking and is used to calculate junction temperature rise under steady-state power dissipation (PD = 5.0 W) or transient thermal limits during surge events.
P6SMB33AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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)
P6SMB33AHE3_B/H FAQ
1.How can I place an order for P6SMB33AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHE3_B/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 P6SMB33AHE3_B/H reliable?
The price and inventory of P6SMB33AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB33AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHE3_B/H?
P6SMB33AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHE3_B/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 P6SMB33AHE3_B/H?
For technical support, including P6SMB33AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB33AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHE3_B/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 P6SMB33AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB33AHE3_B/H?
All P6SMB33AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHE3_B/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 P6SMB33AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB33AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHE3_B/H Tags
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