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Vishay General Semiconductor - Diodes Division P6SMB33CAHE3/5B
- Part No.:
- P6SMB33CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33CAHE3/5B.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,289
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Product details
Overview
P6SMB33CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 33 V standoff voltage (VWM), 36.7 V minimum breakdown voltage (VBR), 45.7 V maximum clamping voltage (VC) 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 automotive and industrial control systems.
For engineers reviewing the P6SMB33CAHE3/5B datasheet, P6SMB33CAHE3/5B pinout, P6SMB33CAHE3/5B application, or P6SMB33CAHE3/5B equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical reverse/forward conduction characteristics due to its bidirectional construction. It responds in <1 ps to ESD and surge events, exhibits low incremental surge resistance, and maintains stable clamping performance across -65 °C to +150 °C junction temperature range.
The P6SMB33CAHE3/5B uses a glass-passivated silicon junction and is rated for repetitive 0.01% duty cycle pulses. Its thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation under transient stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown min) | 36.7 V at 1 mA - Confirmed threshold where avalanche conduction initiates reliably |
| VC (Clamping max) | 45.7 V at 13.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 600 W - Sustained transient energy absorption capability without failure |
| IPPM | 13.1 A - Peak surge current handled at specified clamping voltage and waveform |
| TJ max | +150 °C - Maximum allowable junction temperature for continuous operation |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint and 0.086" height |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, UL 94 V-0 flammability rating, MSL Level 1, compatible with J-STD-002 soldering standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical bidirectional junction; no polarity marking required |
| Cathode | Terminal K | Other side of symmetrical bidirectional junction; electrically identical to Anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR = 1.24) | Minimizes overvoltage stress on downstream components during transient events |
| Glass passivated junction | Ensures long-term stability and low leakage (<1 μA at VWM) across temperature and humidity |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without preconditioning |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail. Use Value: Limits transient voltage to ≤45.7 V while maintaining signal integrity and meeting AEC-Q100 stress requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary protection device installed at connector entry point before optocoupler or MCU GPIO. Use Value: Absorbs 600 W surges without latch-up, enabling robust operation in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on line-side interface, coordinated with GDT or MOV secondary protection. Use Value: Fast sub-nanosecond response ensures clamping occurs before transceiver damage thresholds are exceeded. |
Use Scenario: ESD and surge suppression on USB-C or barrel jack inputs of AC/DC adapters and chargers. IC Role / Device Role / Timing Role: Secondary-level transient suppressor after primary fuse and common-mode choke. Use Value: RoHS-compliant matte tin terminations ensure solder joint reliability in high-volume consumer manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Same VWM (33 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary |
| SMCJ33CA | Same VWM (33 V), higher PPPM (1500 W), SMC package (larger, higher thermal mass) | Better suited for high-repetition surges but requires larger PCB area and different pad layout | Select when system-level surge immunity exceeds IEC 61000-4-5 Level 4 or repeated switching transients occur |
Compared with SMAJ33CA and SMCJ33CA, the P6SMB33CAHE3/5B delivers balanced surge handling (600 W), automotive qualification, and SMB footprint - making it optimal for space-constrained, high-reliability 24 V industrial and automotive modules where thermal management and qualification compliance are critical.
Availability
P6SMB33CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P6SMB33CAHE3/5B 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 power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and consistent clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB33CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB33CAHE3/5B provides symmetrical clamping in both polarities, with identical VWM, VBR, and VC values for positive and negative transients. This eliminates the need for polarity-aware placement and simplifies design for AC-coupled or differential signal lines.
Is P6SMB33CAHE3/5B suitable for automotive applications?
Yes - the "HE3" suffix confirms that P6SMB33CAHE3/5B is RoHS-compliant and AEC-Q101 qualified. It has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it approved for use in engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of P6SMB33CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB33CAHE3/5B is 45.7 V, measured at 13.1 A peak pulse current with a 10/1000 μs waveform. This value defines the highest voltage imposed on protected circuitry during standardized surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB package of P6SMB33CAHE3/5B compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB33CAHE3/5B offers a 0.220" × 0.130" footprint - larger than SMA (DO-214AC) but smaller than SMC (DO-214AB). It balances surge capability (600 W), thermal performance (RθJA = 100 °C/W), and manufacturability, supporting automated placement and reflow without warpage concerns typical of ultra-small packages.
What is the meaning of the "/5B" suffix in P6SMB33CAHE3/5B?
The "/5B" suffix indicates packaging: 13-inch diameter plastic tape and reel with 3200 units per reel. This format supports high-volume SMT assembly and is compatible with standard pick-and-place feeders. The "5B" designation is distinct from "/52" (7-inch reel, 750 units) and ensures correct logistics and inventory handling for production programs.
P6SMB33CAHE3/5B 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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB33CAHE3/5B FAQ
1.How can I place an order for P6SMB33CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33CAHE3/5B 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 P6SMB33CAHE3/5B reliable?
The price and inventory of P6SMB33CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB33CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33CAHE3/5B?
P6SMB33CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33CAHE3/5B 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 P6SMB33CAHE3/5B?
For technical support, including P6SMB33CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB33CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB33CAHE3/5B 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 P6SMB33CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB33CAHE3/5B?
All P6SMB33CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33CAHE3/5B, 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 P6SMB33CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB33CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33CAHE3/5B Tags
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