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Vishay General Semiconductor - Diodes Division P6SMB33CAHE3_B/H
- Part No.:
- P6SMB33CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33CAHE3_B/H.pdf
- Description:
- 600W,33V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,205
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Product details
Overview
P6SMB33CAHE3_B/H 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 (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB33CAHE3_B/H datasheet, P6SMB33CAHE3_B/H pinout, P6SMB33CAHE3_B/H application, or P6SMB33CAHE3_B/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–65 °C to +150 °C), and bidirectional clamping behavior critical for ESD and surge protection design validation.
Technical Context
The P6SMB33CAHE3_B/H operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Rated for 600 W peak pulse power under 10/1000 μs waveform with 0.01% duty cycle, it sustains repetitive transients when mounted on 5.0 mm × 5.0 mm copper pads. The device meets MSL Level 1 per J-STD-020 and is AEC-Q101 qualified - confirming suitability for automotive powertrain and body electronics where reliability under thermal cycling and humidity is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 36.7 V min / 40.9 V max at 1 mA - Ensures predictable turn-on threshold across production lots. |
| VC (Clamping Voltage) | 45.7 V max at 13.1 A IPPM - Limits voltage seen by protected circuit during worst-case 600 W surge. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients like ISO 7637-2 Pulse 1/2b/5a in automotive environments. |
| TJ Range | –65 °C to +150 °C - Enables deployment in under-hood automotive modules and industrial motor drives. |
| RθJA | 100 °C/W - Requires thermal pad layout per datasheet (0.2" × 0.2" copper) to maintain safe junction temperature. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units and ADAS sensor interfaces. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - no PCB orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Protects against high-energy load dump and inductive switching events in 12 V/24 V automotive systems. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock. |
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in long-life industrial deployments. |
| MSL Level 1 (260 °C reflow) | Compatible with standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Low clamping ratio (VC/VBR ≈ 1.24) | Minimizes overvoltage stress on downstream ICs - critical for protecting 3.3 V or 5 V logic interfaces. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Maintains signal integrity under ISO 16750-2 test conditions while surviving >1000 surge cycles due to robust junction construction. |
Use Scenario: Shielding 4–20 mA current loop inputs in PLC analog I/O modules from field wiring induced surges. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) transient suppressor placed across input terminals to prevent op-amp saturation. Use Value: Clamps to ≤45.7 V within nanoseconds, preventing latch-up in precision instrumentation amplifiers without affecting DC accuracy. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding gate drivers and MCU GPIOs in smart washing machine inverters exposed to brush-commutator noise. IC Role / Device Role / Timing Role: Secondary-level TVS on low-voltage control rails, coordinated with primary MOV-based AC line protection. Use Value: Fast response prevents false triggering of overvoltage fault detection while handling repetitive 100–500 V spikes at 10 kHz. |
Use Scenario: Front-end protection for PoE-powered network switches subjected to lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Bidirectional clamp on isolated DC-DC converter input, rated for combined common-mode and differential-mode transients. Use Value: Withstands 600 W pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV) when paired with appropriate series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA-E3/5B | Same VWM (33 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Better suited for space-constrained consumer PCBs; less robust for automotive under-hood thermal environments. | Select when board area is critical and surge energy remains ≤400 W - verify thermal derating at 125 °C ambient. |
| 1.5KE33CA | Same VWM (33 V), higher PPPM (1500 W), axial DO-15 package (through-hole, manual assembly) | Used in legacy industrial power supplies where automated SMT is not available or higher surge margin is required. | Choose for prototyping or low-volume high-reliability systems needing >600 W headroom; not suitable for high-density SMT lines. |
Compared with SMAJ33CA-E3/5B and 1.5KE33CA, the P6SMB33CAHE3_B/H uniquely balances 600 W surge capability, AEC-Q101 qualification, and SMB package manufacturability - making it the preferred choice for volume automotive and industrial SMT production where reliability, consistency, and assembly yield are jointly prioritized.
Availability
P6SMB33CAHE3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, appliance motor controls, and telecom power supply designs requiring stable component supply with guaranteed AEC-Q101 compliance and full traceability.
Supply support for P6SMB33CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications infrastructure - engineered for robustness under thermal stress, humidity, and repetitive surge events.
FAQ
What does the "CA" suffix indicate in P6SMB33CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration: the P6SMB33CAHE3_B/H clamps voltage transients equally in both polarities, eliminating the need for polarity-aware PCB layout. This differs from unidirectional variants (e.g., P6SMB33A) that require cathode band alignment and only suppress positive-going transients. Bidirectional operation is essential for AC-coupled or floating signal lines such as CAN, LIN, or Ethernet interfaces.
Is P6SMB33CAHE3_B/H suitable for automotive applications?
Yes - the "HE3" suffix confirms RoHS-compliant construction and AEC-Q101 qualification, validated for automotive use including temperature cycling, humidity testing, and mechanical shock. The P6SMB33CAHE3_B/H is explicitly rated for under-hood environments up to +150 °C junction temperature and meets ISO 7637-2 surge immunity requirements when applied per Vishay's recommended layout guidelines.
How does the clamping voltage VC of P6SMB33CAHE3_B/H compare to its breakdown voltage VBR?
The P6SMB33CAHE3_B/H has a minimum VBR of 36.7 V and a maximum VC of 45.7 V at 13.1 A IPPM, yielding a clamping ratio (VC/VBR) of approximately 1.24. This tight ratio ensures minimal overvoltage overshoot during surge events - critical for protecting 3.3 V or 5 V logic circuits without requiring additional series impedance or voltage margin.
What is the thermal resistance of P6SMB33CAHE3_B/H, and how does it affect layout?
The P6SMB33CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To avoid exceeding the 150 °C maximum junction temperature, PCB layout must follow Vishay's recommended pad dimensions and avoid excessive trace length or isolation - especially in high-ambient-temperature applications like automotive ECUs.
Can P6SMB33CAHE3_B/H replace older P6SMB33CA parts without redesign?
Yes - the P6SMB33CAHE3_B/H maintains identical electrical specifications, SMB (DO-214AA) package dimensions, and pinout compatibility with legacy P6SMB33CA variants. The "HE3" suffix adds AEC-Q101 qualification and RoHS compliance but does not alter footprint, solder profile, or surge performance - enabling drop-in replacement in existing designs requiring enhanced automotive reliability assurance.
P6SMB33CAHE3_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:
- -
- 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:
- 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)
P6SMB33CAHE3_B/H FAQ
1.How can I place an order for P6SMB33CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33CAHE3_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 P6SMB33CAHE3_B/H reliable?
The price and inventory of P6SMB33CAHE3_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 P6SMB33CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB33CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33CAHE3_B/H?
P6SMB33CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33CAHE3_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 P6SMB33CAHE3_B/H?
For technical support, including P6SMB33CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB33CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33CAHE3_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 P6SMB33CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB33CAHE3_B/H?
All P6SMB33CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33CAHE3_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 P6SMB33CAHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB33CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33CAHE3_B/H Tags
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