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Vishay General Semiconductor - Diodes Division P6SMB33AHE3_A/H
- Part No.:
- P6SMB33AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHE3_A/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,628
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Product details
Overview
P6SMB33AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 33 V standoff voltage (VWM = 28.2 V), 45.7 V clamping voltage at 13.1 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform - deployed for overvoltage protection of MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB33AHE3_A/H datasheet, P6SMB33AHE3_A/H pinout, P6SMB33AHE3_A/H application, or P6SMB33AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds its breakdown threshold (VBR min = 31.4 V, max = 34.7 V at 1 mA). It delivers fast response time (<1 ns) and low clamping ratio (VC/VBR ≈ 1.42) under standardized 10/1000 μs transients.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to 150 °C junction temperature. Its glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 28.2 V - maximum continuous reverse operating voltage before significant leakage; ensures stable blocking during normal operation. |
| VBR (Breakdown Voltage) | 31.4–34.7 V at 1 mA - precise voltage threshold triggering clamping action; tight tolerance supports predictable protection margins. |
| VC (Clamping Voltage) | 45.7 V at IPPM = 13.1 A - limits transient-induced stress on downstream components; enables robust protection of 3.3 V/5 V/12 V logic interfaces. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - sustains high-energy surges common in inductive load switching and ESD events. |
| ID (Max Reverse Leakage) | 1.0 μA at VWM - negligible standby current minimizes power loss and avoids false triggering in low-power systems. |
| TJ max | 150 °C - supports operation in under-hood automotive and industrial environments without thermal derating penalties. |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint; compatible with standard reflow profiles and pick-and-place equipment. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to system ground or lower-potential rail; defines polarity-sensitive clamping direction. |
| Cathode | Reverse voltage input / clamping output | Connected to protected line (e.g., I/O, power rail); conducts surge current to ground when VREV > VBR. |
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 infotainment modules. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives - critical for high-humidity or extended-life applications. |
| Low profile SMB package | Height ≤ 0.096" (2.44 mm) enables dense PCB layouts and compatibility with low-clearance enclosures and conformal coating processes. |
| 600 W peak pulse rating | Withstands repetitive 10/1000 μs transients at 0.01% duty cycle - meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| Matte tin plating | Ensures solder joint integrity per J-STD-002 and eliminates whisker risk per JESD22-B102 Class 2 - supports lead-free reflow and long-term field reliability. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to limit transient overshoot below IC absolute maximum ratings. Use Value: Clamps 33 V nominal lines to ≤45.7 V during 13.1 A surges - prevents latch-up and gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input channels, absorbing repetitive 600 W transients without degradation over 10⁵ cycles. Use Value: Maintains <1 μA leakage at 28.2 V - avoids false triggering in high-impedance optocoupler-based input circuits. |
| Consumer Power Adapter Output | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters supplying USB-C PD and PoE-powered devices. IC Role / Device Role / Timing Role: Fast-clamping diode across regulated 5 V/9 V/12 V outputs to suppress flyback spikes and ESD events during hot-plug insertion. Use Value: 45.7 V clamping voltage ensures downstream USB-PD controllers remain within 20 V absolute max rating during 10/1000 μs surges. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers against lightning-induced surges on twisted-pair telecom interfaces. IC Role / Device Role / Timing Role: Unidirectional TVS on DC-biased data lines, coordinated with gas discharge tubes (GDTs) for staged multi-level protection. Use Value: 100 °C/W thermal resistance allows direct mounting on FR4 without heatsinks - simplifies layout in space-constrained line cards. |
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 (28.2 V), but lower PPPM (400 W) and higher VC (53.3 V at 7.5 A). | Limited to lower-energy transients; not rated for AEC-Q101. | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom. |
| 1.5SMC33A | Same electrical specs (VWM = 28.2 V, VC = 45.7 V), but larger SMC (DO-214AB) package (0.275" × 0.195") and higher RθJA (75 °C/W). | Requires more PCB area; better thermal dissipation only if mounted on large copper planes. | Choose only if existing layout uses SMC footprints or requires marginally improved thermal performance at board level. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, P6SMB33AHE3_A/H provides AEC-Q101 qualification, 50% higher peak pulse power, and optimized SMB footprint for high-density automotive and industrial designs - making it the preferred choice where reliability, surge margin, and space constraints converge.
Availability
P6SMB33AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and consumer power adapter secondary-side protection requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.
Supply support for P6SMB33AHE3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, low clamping ratio, and robust SMT manufacturability.
FAQ
What is the clamping voltage of P6SMB33AHE3_A/H at its rated peak pulse current?
The P6SMB33AHE3_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 per Figure 1 in the Vishay datasheet 88370 and reflects worst-case device behavior at TA = 25 °C with specified mounting conditions (0.2" × 0.2" copper pads). The P6SMB33AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is P6SMB33AHE3_A/H qualified for automotive applications?
Yes, P6SMB33AHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's ordering information table (page 3, Document Number 88370). It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D, making it suitable for under-hood and cabin electronics such as body control modules and sensor interfaces.
What does the "_A/H" suffix in P6SMB33AHE3_A/H indicate?
The "_A/H" suffix in P6SMB33AHE3_A/H specifies packaging and revision: "A" denotes the revision code per Vishay's internal documentation, and "H" indicates 7" diameter plastic tape and reel delivery mode with 750 units per reel. This matches the ordering example "P6SMB6.8AHE3_B/H" on page 3 of datasheet 88370, confirming standard commercial packaging for automated assembly.
How does the thermal resistance of P6SMB33AHE3_A/H affect its power handling capability?
P6SMB33AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This means a 5.0 W steady-state power dissipation (PD) raises junction temperature by 500 °C above ambient - but since TJ max is 150 °C, the device relies on short-duration pulse operation (e.g., 10/1000 μs) rather than continuous dissipation. Its RθJL of 20 °C/W supports efficient heat transfer to PCB traces during transient events.
Can P6SMB33AHE3_A/H be used in bidirectional configurations?
No, P6SMB33AHE3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix (versus "CA" for bidirectional variants like P6SMB33CA). Its cathode band marking and asymmetric IV characteristics mean it conducts only in reverse bias - applying forward voltage beyond ~3.5 V (VF at 50 A) risks permanent damage. For bidirectional protection, select P6SMB33CAHE3_A/H instead.
P6SMB33AHE3_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:
- -
- 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_A/H FAQ
1.How can I place an order for P6SMB33AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHE3_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 P6SMB33AHE3_A/H reliable?
The price and inventory of P6SMB33AHE3_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 P6SMB33AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB33AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHE3_A/H?
P6SMB33AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHE3_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 P6SMB33AHE3_A/H?
For technical support, including P6SMB33AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB33AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHE3_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 P6SMB33AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB33AHE3_A/H?
All P6SMB33AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHE3_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 P6SMB33AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB33AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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