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Vishay General Semiconductor - Diodes Division P6SMB30CA-M3/52
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- Part No.:
- P6SMB30CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CA-M3/52.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,956
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Product details
Overview
P6SMB30CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), and 41.4 V maximum clamping voltage (VC) at 14.5 A peak pulse current (IPPM). It delivers 600 W peak pulse power with 10/1000 μs waveform and is halogen-free, RoHS-compliant, and qualified to J-STD-020 MSL Level 1.
For engineers reviewing the P6SMB30CA-M3/52 datasheet, P6SMB30CA-M3/52 pinout, P6SMB30CA-M3/52 application, or P6SMB30CA-M3/52 equivalent, this device serves as a robust, automated-placement-ready protection solution for bidirectional signal lines, sensor interfaces, and low-voltage DC rails in automotive, industrial, and telecom systems where fast transient suppression and low clamping ratio are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, 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), while its low incremental surge resistance supports consistent clamping under repetitive transients.
The device exhibits a temperature coefficient of VBR of +0.097 %/°C and thermal resistance of 100 °C/W (junction-to-ambient), requiring attention to PCB copper pad area (0.2" × 0.2") for sustained power handling. It meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though P6SMB30CA-M3/52 itself is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30 V - Maximum continuous reverse voltage before conduction begins; defines safe operating window for protected circuit. |
| VBR (Breakdown, min) | 33.3 V at 1.0 mA - Guaranteed turn-on threshold; ensures reliable triggering above normal operating voltage. |
| VC (Clamping, max) | 41.4 V at 14.5 A - Peak voltage seen by downstream circuit during 10/1000 μs surge; determines stress on protected ICs. |
| PPPM | 600 W - Peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 3 surges. |
| IPPM | 14.5 A - Corresponding peak current at VC; used with trace impedance to estimate clamping margin. |
| Junction Temp. Range | –65 °C to +150 °C - Supports operation in under-hood automotive and industrial environments without derating. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm length, 3.94 mm width, and 2.20 mm height; compatible with standard SMT reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative-going transients; connects to line being protected. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive-going transients; connects to same line as Anode - bidirectional symmetry means both terminals serve identical roles. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 600 W surge rating | Enables single-device protection of AC, differential, or floating signal lines without external polarity management. |
| Low clamping ratio (VC/VBR ≈ 1.24) | Minimizes overvoltage stress on downstream components such as RS-485 transceivers or ADC inputs. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for consumer, industrial, and automotive supply chains without performance trade-offs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing logistics. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors connected to ECU inputs against load-dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤41.4 V, preventing latch-up or damage to 3.3 V or 5 V ADC front-ends while maintaining signal integrity below 30 V. |
Use Scenario: Safeguarding RS-485 transceiver data lines (A/B) in factory automation PLCs exposed to motor switching noise and ground bounce. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair on differential bus nodes. Use Value: Clamps ±41.4 V surges within nanoseconds, preserving common-mode range and preventing receiver saturation or permanent failure. |
| Telecom Power Rail | Consumer USB Port Protection |
Use Scenario: Shielding 24 V DC power inputs of VoIP phones and base stations from lightning-induced surges on PoE or auxiliary supplies. IC Role / Device Role / Timing Role: Parallel-connected TVS between rail and ground, upstream of DC-DC converter. Use Value: Absorbs 600 W pulses without degradation, holding rail voltage below 45 V to avoid overvoltage shutdown of downstream regulators. |
Use Scenario: Guarding USB 2.0 D+/D− lines in portable speakers and docking stations against ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pair, referenced to local ground. Use Value: Responds in <1 ns to ±8 kV HBM ESD, limiting voltage excursion to <42 V and preserving signal eye diagram integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA-T3 | Same VWM (30 V), slightly higher VC (45.7 V), lower IPPM (13.1 A); identical SMB package and bidirectional function. | Marginally reduced clamping performance; suitable where layout allows minor VC increase. | Select when cost optimization is prioritized and 4.3 V higher clamping voltage is acceptable for protected circuitry. |
| 1.5SMC33CA | Higher package (SMC/DO-214AB), larger footprint (7.11 × 6.22 mm vs. 5.59 × 3.94 mm); same VWM/VBR, but VC = 53.3 V at 11.3 A. | Requires PCB redesign; better suited for high-energy, low-density layouts where thermal mass matters more than space. | Choose only if board real estate permits larger package and higher clamping voltage is tolerable in system-level surge testing. |
Compared with SMBJ30CA-T3 and 1.5SMC33CA, P6SMB30CA-M3/52 offers the tightest clamping voltage (41.4 V) in the smallest SMB footprint, making it optimal for space-constrained, high-reliability designs where minimizing protected node overvoltage is critical - especially in automotive and industrial sensor nodes.
Availability
P6SMB30CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom power rail protection requiring stable component supply, halogen-free compliance, and repeatable surge performance.
Supply support for P6SMB30CA-M3/52 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, efficiency, and application-specific performance.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications equipment, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 options.
FAQ
What is the clamping voltage of P6SMB30CA-M3/52 at its rated peak pulse current?
The P6SMB30CA-M3/52 has a maximum clamping voltage (VC) of 41.4 V at 14.5 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet revision 09-Jan-2024 and reflects worst-case voltage seen by protected circuitry during standardized surge events. The P6SMB30CA-M3/52 maintains this clamping performance across its specified operating temperature range.
Is P6SMB30CA-M3/52 suitable for automotive applications?
P6SMB30CA-M3/52 is halogen-free and RoHS-compliant but is not AEC-Q101 qualified in this specific M3/52 ordering variant. For automotive use, Vishay offers AEC-Q101 versions under HM3 suffixes (e.g., P6SMB30CAHM3_B/H). Engineers must select those qualified variants for under-hood or safety-critical modules; P6SMB30CA-M3/52 remains appropriate for non-qualified automotive subsystems like infotainment or body electronics where full qualification is not mandated.
How does the bidirectional nature of P6SMB30CA-M3/52 affect PCB layout?
The bidirectional design of P6SMB30CA-M3/52 eliminates polarity concerns during placement - no cathode band marking is present, and either terminal may connect to the protected line or ground. This simplifies layout for differential signals (e.g., CAN, RS-485) and AC-coupled paths. Layout must still follow Vishay's recommended 0.2" × 0.2" copper pads per terminal to ensure thermal performance and 600 W pulse handling, as specified in the P6SMB30CA-M3/52 datasheet.
What is the maximum leakage current of P6SMB30CA-M3/52 at its standoff voltage?
At its 30 V standoff voltage (VWM), the P6SMB30CA-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, per the Vishay datasheet. This low leakage ensures minimal power loss and signal interference in high-impedance circuits such as sensor bias networks or precision reference paths. Leakage increases with temperature but remains below 10 μA up to 85 °C.
Can P6SMB30CA-M3/52 be used in place of a unidirectional TVS like P6SMB30A-M3/52?
No - P6SMB30CA-M3/52 is strictly bidirectional and lacks polarity marking, whereas P6SMB30A-M3/52 is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use cases (e.g., differential buses, AC signals) require P6SMB30CA-M3/52, while DC rail-to-ground protection typically uses unidirectional devices. Using P6SMB30CA-M3/52 in a unidirectional application adds no harm but wastes design margin; using P6SMB30A-M3/52 in a bidirectional path will fail during negative transients.
P6SMB30CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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 (SMBJ)
P6SMB30CA-M3/52 FAQ
1.How can I place an order for P6SMB30CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CA-M3/52 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 P6SMB30CA-M3/52 reliable?
The price and inventory of P6SMB30CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB30CA-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB30CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CA-M3/52?
P6SMB30CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CA-M3/52 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 P6SMB30CA-M3/52?
For technical support, including P6SMB30CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CA-M3/52 requirements.
6.How does Aetrix verify that P6SMB30CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB30CA-M3/52 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 P6SMB30CA-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB30CA-M3/52?
All P6SMB30CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CA-M3/52, 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 P6SMB30CA-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB30CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CA-M3/52 Tags
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