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Vishay General Semiconductor - Diodes Division P6SMB33AHE3/52
- Part No.:
- P6SMB33AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHE3/52.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB33AHE3/52 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 at 13.1 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB33AHE3/52 datasheet, P6SMB33AHE3/52 pinout, P6SMB33AHE3/52 application, or P6SMB33AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), RoHS compliance, MSL Level 1 moisture sensitivity, 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 leakage performance and fast response time (<1 ns), while low incremental surge resistance enables effective energy diversion during transient events like ESD, inductive switching spikes, or lightning-induced surges.
The P6SMB33AHE3/52 is rated for 150 °C maximum junction temperature and exhibits a +0.098 %/°C temperature coefficient of VBR. It is specified for repetitive 0.01 % duty cycle pulses and derates linearly above 25 °C ambient per Fig. 2 in the datasheet, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA test current - defines precise avalanche onset range for reliable clamping margin |
| VWM | 28.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage seen by protected circuit during 600 W transient event |
| IPPM | 13.1 A with 10/1000 µs waveform - peak surge current capability under standardized transient condition |
| PPPM | 600 W - peak pulse power handling capacity, critical for suppressing high-energy transients |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial environments |
| Temp. Coeff. of VBR | +0.098 %/°C - quantifies voltage drift over temperature, essential for precision protection design |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking; polarity is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines directionality of clamping action |
| Cathode | Avalanche conduction terminal / Clamping output node | Connected to protected line (e.g., 24 V rail or sensor input); conducts surge current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust suppression of high-energy transients without failure in industrial motor drives and power supplies |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without preconditioning or special handling |
| Glass passivated junction | Ensures stable reverse leakage (<1.0 µA at VWM) and long-term parameter stability across life cycle |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream components during transient events |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 28.2 V. Use Value: Limits rail voltage to ≤45.7 V during 13.1 A transients, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb ESD and cable discharge events. Use Value: Maintains signal integrity by clamping transients within 1 ns, with <1.0 µA leakage at 28.2 V ensuring minimal offset error. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Securing 48 V DC input of PoE-powered network switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on input stage, coordinated with upstream fuse and filter inductors. Use Value: Handles 600 W pulses without degradation, meeting IEC 61000-4-5 Level 3 requirements when mounted on 5 mm × 5 mm copper pads. |
Use Scenario: Shielding H-bridge gate drivers in smart home appliances from inductive kickback during BLDC motor commutation. IC Role / Device Role / Timing Role: Mounted across each half-bridge supply rail to suppress VDS spikes at MOSFET drains. Use Value: Fast response and low VC prevent unintended turn-on of synchronous FETs and reduce electromagnetic emissions. |
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-E3/52 | Same VWM (28.2 V) and VC (45.7 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 600 W surge requirements | Select only if board space is constrained and surge energy remains below 400 W |
| 1.5SMC33A | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass but requires more PCB area | Better thermal performance in high-duty-cycle scenarios; not AEC-Q101 qualified in standard version | Choose when sustained pulse repetition or manual rework tolerance is prioritized over AEC-Q101 compliance |
Compared with SMAJ33A-E3/52 and 1.5SMC33A, the P6SMB33AHE3/52 uniquely combines AEC-Q101 qualification, 600 W pulse rating, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring certified reliability and high surge immunity.
Availability
P6SMB33AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor controllers requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB33AHE3/52 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 is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 validation, and consistent clamping performance are mandatory.
FAQ
What is the breakdown voltage tolerance for P6SMB33AHE3/52?
The P6SMB33AHE3/52 has a specified breakdown voltage range of 31.4 V to 34.7 V at 1.0 mA test current, representing ±5% tolerance around the nominal 33 V rating. This tight VBR window ensures predictable clamping behavior in safety-critical circuits and is verified per ANSI/IEEE C62.35 standards. The P6SMB33AHE3/52 maintains this specification across its full operating temperature range.
Is P6SMB33AHE3/52 suitable for bidirectional transient protection?
No, P6SMB33AHE3/52 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P6SMB33CA variant. Using P6SMB33AHE3/52 in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. Always verify polarity alignment before integrating P6SMB33AHE3/52.
Does P6SMB33AHE3/52 require derating at elevated ambient temperatures?
Yes, P6SMB33AHE3/52 must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet. Its peak pulse power capability decreases linearly to ~50% at 100 °C ambient, due to junction temperature limits (TJ max = 150 °C). Designers must calculate worst-case power dissipation using RθJA = 100 °C/W and ensure thermal pad layout meets the 0.2" × 0.2" copper requirement to maintain P6SMB33AHE3/52 reliability.
What does the "HE3" suffix signify in P6SMB33AHE3/52?
The "HE3" suffix in P6SMB33AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade E3 or M3 variants. HE3 devices undergo extended stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST) to meet automotive reliability requirements. This makes P6SMB33AHE3/52 appropriate for under-hood and safety-related systems where P6SMB33AHE3/52 certification is contractually mandated.
Can P6SMB33AHE3/52 be used in place of P6SMB33A-E3/52?
Yes, P6SMB33AHE3/52 is a direct replacement for P6SMB33A-E3/52 in all electrical and mechanical respects, with identical VWM, VBR, VC, and package dimensions. The HE3 version adds AEC-Q101 qualification and the same RoHS compliance as E3, offering enhanced reliability without design changes. System-level validation of P6SMB33AHE3/52 is recommended only if automotive qualification is required; otherwise, P6SMB33AHE3/52 provides backward-compatible upgrade path.
P6SMB33AHE3/52 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)
P6SMB33AHE3/52 FAQ
1.How can I place an order for P6SMB33AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHE3/52 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 P6SMB33AHE3/52 reliable?
The price and inventory of P6SMB33AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB33AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHE3/52?
P6SMB33AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHE3/52 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 P6SMB33AHE3/52?
For technical support, including P6SMB33AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHE3/52 requirements.
6.How does Aetrix verify that P6SMB33AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHE3/52 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 P6SMB33AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB33AHE3/52?
All P6SMB33AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHE3/52, 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 P6SMB33AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB33AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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