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Vishay General Semiconductor - Diodes Division P6SMB33CA-E3/52
- Part No.:
- P6SMB33CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33CA-E3/52.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
P6SMB33CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 33 V standoff voltage (VWM), and clamping voltage of 45.7 V at 13.1 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom line cards against ESD and inductive switching transients.
For engineers reviewing the P6SMB33CA-E3/52 datasheet, P6SMB33CA-E3/52 pinout, P6SMB33CA-E3/52 application, or P6SMB33CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and AEC-Q101 qualification readiness via HE3/HM3 variants.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM) across -65 °C to +150 °C operating range.
The device delivers fast response time (<1.0 ns) and low incremental surge resistance, achieving clamping within nanoseconds of transient onset. Thermal resistance is characterized at RθJA = 100 °C/W (on 0.2" × 0.2" copper pads), supporting reliable operation under repetitive 0.01% duty cycle surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for protected circuit. |
| VC @ IPPM | 45.7 V - Clamped voltage at 13.1 A peak pulse current; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; validates robustness against lightning-induced surges. |
| IPPM | 13.1 A - Peak pulse current capacity; sets minimum surge current threshold the device can safely divert. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard SMT reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | Accepts surge current during positive or negative voltage excursions; symmetrical conduction path. |
| Cathode | Transient current exit point (either direction) | Completes bidirectional clamping loop; identical electrical role to Anode under reverse polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements (4 kV line-to-line) when properly laid out. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; eliminates moisture-related popcorning risk. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current over temperature and lifetime. |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring validated reliability (e.g., ADAS sensor front-ends). |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between transceiver pins and chassis ground. Use Value: Limits transient voltage to ≤45.7 V, preventing latch-up or gate oxide damage in 3.3 V/5 V transceivers. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage suppression element at terminal block entry point. Use Value: Absorbs 600 W surges without degradation, maintaining channel integrity during factory maintenance events. |
| Telecom Line Card Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Safeguarding Ethernet PHY interface components on base station line cards exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Common-mode TVS across differential pairs (e.g., MDI-X) referenced to chassis ground. Use Value: Clamps <1 ns after surge onset, preserving signal integrity for 1000BASE-T operation up to 100 m. |
Use Scenario: Adding secondary-level ESD protection on USB-C VBUS lines in wall adapters certified to IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Secondary clamp downstream of primary fuse and common-mode choke. Use Value: Withstands 15 kV air discharge per IEC 61000-4-2 while adding <1 pF capacitance to avoid signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Same SMB package, identical VWM (33 V) and VC (45.7 V), but rated for 600 W with tighter VBR tolerance (min/max 35.1–38.8 V vs. 31.4–34.7 V). | Preferred where tighter breakdown voltage distribution is required for precise clamping window control. | Select SMBJ33CA when statistical process control of VBR is critical; P6SMB33CA-E3/52 offers broader VBR range for cost-sensitive volume production. |
| 1.5SMC33CA | Higher-power 1500 W variant in larger SMC (DO-214AB) package; same VWM/VC ratings but requires 30% more PCB area. | Suitable for systems demanding higher surge margin (e.g., outdoor telecom enclosures) where board space permits. | Choose 1.5SMC33CA only if 600 W is insufficient; P6SMB33CA-E3/52 provides optimal power density for space-constrained designs. |
Compared with SMBJ33CA and 1.5SMC33CA, P6SMB33CA-E3/52 delivers the best balance of standardized SMB footprint, RoHS compliance, and cost-per-protection-point for mid-tier industrial and automotive applications-without sacrificing clamping performance or thermal derating capability.
Availability
P6SMB33CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line card protection, and consumer power adapter ESD guard circuits requiring stable component supply and full traceability.
Supply support for P6SMB33CA-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The P6SMB Series targets cost-effective, high-volume transient suppression in automotive, industrial, and communications equipment, emphasizing manufacturability, MSL Level 1 compatibility, and AEC-Q101 qualification pathways.
FAQ
What is the clamping voltage of P6SMB33CA-E3/52 at its rated peak pulse current?
The P6SMB33CA-E3/52 clamps to a maximum of 45.7 V when subjected to its specified peak pulse current of 13.1 A under the 10/1000 μs waveform condition. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance remains consistent across its operating temperature range of -65 °C to +150 °C.
Is P6SMB33CA-E3/52 suitable for automotive applications?
P6SMB33CA-E3/52 itself is commercial-grade, but Vishay offers AEC-Q101 qualified variants under HE3 and HM3 suffixes (e.g., P6SMB33CAHE3_B). These qualified versions undergo extended reliability testing including temperature cycling, humidity bias, and high-temperature operating life. For non-safety-critical automotive subsystems like body control modules or infotainment interfaces, the HE3/HM3 variants of P6SMB33CA-E3/52 are fully compliant.
How does the bidirectional design of P6SMB33CA-E3/52 affect its placement on PCBs?
The bidirectional nature of P6SMB33CA-E3/52 eliminates polarity orientation constraints during placement-no cathode band marking is present, and either terminal functions identically under positive or negative transients. This simplifies automated assembly and reduces misplacement risk in differential or AC-coupled signal paths such as RS-485, CAN, or audio lines. Layout requires symmetric 0.2" × 0.2" copper pads per terminal for optimal thermal and surge current handling.
What is the maximum steady-state power dissipation of P6SMB33CA-E3/52?
P6SMB33CA-E3/52 has a maximum steady-state power dissipation (PD) of 5.0 W at TA = 50 °C on an infinite heatsink. In typical SMB surface-mount layouts with 0.2" × 0.2" copper pads, derating applies above 25 °C ambient per Figure 2 in the datasheet. Continuous DC power dissipation is not recommended; the device is engineered for transient suppression, not sustained power handling.
Does P6SMB33CA-E3/52 meet lead-free and RoHS requirements?
Yes, P6SMB33CA-E3/52 carries the "E3" suffix indicating full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and halogen-free molding compound. It satisfies JESD201 Class 2 whisker resistance and meets JEDEC moisture sensitivity Level 1, allowing standard reflow without pre-baking. Compliance documentation is available through Vishay's material declarations portal.
P6SMB33CA-E3/52 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33CA-E3/52 FAQ
1.How can I place an order for P6SMB33CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33CA-E3/52 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 P6SMB33CA-E3/52 reliable?
The price and inventory of P6SMB33CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB33CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33CA-E3/52?
P6SMB33CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33CA-E3/52 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 P6SMB33CA-E3/52?
For technical support, including P6SMB33CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB33CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB33CA-E3/52 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 P6SMB33CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB33CA-E3/52?
All P6SMB33CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33CA-E3/52, 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 P6SMB33CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB33CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33CA-E3/52 Tags
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