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Vishay General Semiconductor - Diodes Division P6SMB33A-E3/5B
- Part No.:
- P6SMB33A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33A-E3/5B.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,047
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Product details
Overview
P6SMB33A-E3/5B 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 industrial power supplies.
For engineers reviewing the P6SMB33A-E3/5B datasheet, P6SMB33A-E3/5B pinout, P6SMB33A-E3/5B application, or P6SMB33A-E3/5B equivalent, this part delivers verified transient suppression performance for 24 V DC bus protection, automotive body electronics, and telecom interface circuits where low-profile SMT placement and AEC-Q101-compatibility options are required.
Technical Context
The P6SMB33A-E3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping during fast transients (response time < 1 ns).
Thermal design relies on its RθJA = 100 °C/W and RθJL = 20 °C/W ratings, with derating above TA = 25 °C per Figure 2. It meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports automated placement on standard 0.2" × 0.2" copper pads per JEDEC DO-214AA layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 28.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage seen by protected circuit during 600 W 10/1000 µs surge |
| PPPM | 600 W - peak transient power handling capability, validated per REA-defined 10/1000 µs waveform |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine), critical for inductive switch-off events |
| TJ max | +150 °C - maximum junction temperature, enabling operation in under-hood or enclosed industrial environments |
| Package | SMB (DO-214AA) - standardized 3.94 mm × 2.20 mm footprint with matte tin-plated leads, J-STD-002 solderable |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked by cathode band. Dimensions: 3.94 mm × 2.20 mm × 1.75 mm (L × W × H); thermal pad layout per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to lower-potential side of protected line (e.g., GND or return path) |
| Cathode | Clamping output / transient sink node | Connected to higher-potential line (e.g., 24 V rail); band-marked end conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation on 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs compared to Zener-based alternatives |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard SMT reflow profiles up to 260 °C peak |
| Glass passivated junction | Ensures long-term stability of VBR and leakage (<1 µA at VWM) across temperature and life cycle |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-20 |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Suppressing load-dump and inductive switching transients on 24 V DC input rails of PLC power modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp spikes before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤45.7 V, preventing latch-up or gate oxide damage in 36 V-rated power management ICs. |
Use Scenario: Protecting LIN bus transceivers and window motor drivers from battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBAT line, absorbing >600 W pulses while maintaining <1 µA leakage at 28.2 V. Use Value: Enables robust operation per ISO 16750-2 without requiring additional series impedance or filtering. |
| Telecom Interface Surge Protection | Consumer Sensor Signal Line Guarding |
|
Use Scenario: Safeguarding RS-485 transceiver inputs against lightning-induced surges on outdoor data links. IC Role / Device Role / Timing Role: Primary clamping device on differential pair, coordinated with common-mode chokes and secondary TVS. Use Value: Fast response (<1 ns) and low VC preserve signal integrity during 10/1000 µs threats up to 13.1 A. |
Use Scenario: Shielding I²C lines of environmental sensors (e.g., temperature/humidity) from ESD and board-level coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at 0 V) placed directly at connector entry point. Use Value: Prevents false triggering or communication lockup during ±8 kV contact ESD events per IEC 61000-4-2. |
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 VBR range (31.4–34.7 V), but lower PPPM = 400 W and larger SMA package (DO-214AC) | Less suitable for high-energy 24 V automotive load-dump; requires more PCB area | Select when cost sensitivity outweighs peak power margin and board space permits larger footprint |
| 1.5SMC33A | Higher PPPM = 1500 W, same VBR, but SMC (DO-214AB) package - 7.11 mm × 6.22 mm vs. SMB's 3.94 mm × 2.20 mm | Overqualified for compact consumer designs; thermal mass delays response slightly | Choose only when legacy SMC layout exists or system-level testing demands >600 W headroom |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, the P6SMB33A-E3/5B uniquely balances 600 W surge capacity, SMB footprint efficiency, and production-ready MSL Level 1 compatibility - making it optimal for space-constrained 24 V industrial and automotive modules where both reliability and manufacturability are critical.
Availability
P6SMB33A-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom interface circuits requiring stable component supply, RoHS compliance, and consistent tape-and-reel delivery.
Supply support for P6SMB33A-E3/5B 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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P6SMB Series targets high-volume surface-mount transient suppression in harsh environments, engineered specifically for industrial automation, automotive subsystems, and infrastructure equipment where repeatable clamping and JEDEC-standard packaging are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB33A-E3/5B under a 10/1000 µs surge?
The P6SMB33A-E3/5B has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current, measured under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and production lots per Vishay Document 88370, ensuring predictable protection margin for 24 V systems. The P6SMB33A-E3/5B maintains this clamping performance without degradation when mounted on minimum recommended 0.2" × 0.2" copper pads.
Is the P6SMB33A-E3/5B RoHS-compliant and lead-free?
Yes, the P6SMB33A-E3/5B carries the "E3" suffix, indicating full compliance with the EU RoHS Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the molding compound satisfies UL 94 V-0 flammability rating. No lead or restricted substances exceed threshold limits, and the part is rated MSL Level 1 for reflow processing.
Does the P6SMB33A-E3/5B have AEC-Q101 qualification?
No, the P6SMB33A-E3/5B is not AEC-Q101 qualified. That qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., P6SMB33AHE3_B). The "E3/5B" version is commercial-grade, rated for -65 °C to +150 °C operation but not subjected to the extended stress testing required for automotive qualification. For AEC-Q101 needs, specify P6SMB33AHE3_B or P6SMB33AHM3_B.
What is the standoff voltage (VWM) and why does it matter for P6SMB33A-E3/5B selection?
The P6SMB33A-E3/5B has a standoff voltage (VWM) of 28.2 V - the maximum continuous reverse voltage it can block without exceeding 1.0 µA leakage. This value ensures reliable operation on nominal 24 V DC systems, providing ≥15% margin above steady-state rail voltage while avoiding false triggering. Selecting a TVS with insufficient VWM causes excessive leakage and potential thermal runaway.
Can the P6SMB33A-E3/5B be used in bidirectional configurations?
No, the P6SMB33A-E3/5B is unidirectional only, indicated by the "A" suffix (not "CA"). Bidirectional operation requires the CA variant (e.g., P6SMB33CA-E3/5B), which lacks polarity marking and conducts symmetrically in both directions. Using the P6SMB33A-E3/5B in a bidirectional application would result in forward conduction during negative transients, causing failure or incorrect clamping behavior.
P6SMB33A-E3/5B 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33A-E3/5B FAQ
1.How can I place an order for P6SMB33A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33A-E3/5B 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 P6SMB33A-E3/5B reliable?
The price and inventory of P6SMB33A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB33A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33A-E3/5B?
P6SMB33A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33A-E3/5B 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 P6SMB33A-E3/5B?
For technical support, including P6SMB33A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33A-E3/5B requirements.
6.How does Aetrix verify that P6SMB33A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB33A-E3/5B 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 P6SMB33A-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB33A-E3/5B?
All P6SMB33A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33A-E3/5B, 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 P6SMB33A-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB33A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33A-E3/5B Tags
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