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Vishay General Semiconductor - Diodes Division P6SMB30CAHM3/I
- Part No.:
- P6SMB30CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CAHM3/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,165
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Product details
Overview
P6SMB30CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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), designed to protect signal lines and power rails in automotive and industrial sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the P6SMB30CAHM3/I datasheet, P6SMB30CAHM3/I pinout, P6SMB30CAHM3/I application, or P6SMB30CAHM3/I equivalent, this device delivers verified 600 W peak pulse power handling with 10/1000 μs waveform, AEC-Q101 qualification for automotive use, halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level surge protection design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable clamping performance under repetitive transient stress, while low incremental surge resistance (derived from VC/IPPM ≈ 2.85 Ω) supports effective energy diversion without thermal runaway.
The device is optimized for PCB-mounted protection of low-voltage analog and digital signal paths, including CAN, LIN, and sensor I/O lines. Its 100 °C/W junction-to-ambient thermal resistance requires minimal copper pad area (0.2" × 0.2") for reliable operation at full 600 W pulse rating, and its 150 °C maximum junction temperature enables deployment in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below system rail. |
| VBR (Breakdown Voltage) | 33.3 V min - Voltage at which device enters avalanche conduction; guarantees clamping onset within 3.3 V above VWM. |
| VC (Clamping Voltage) | 41.4 V max at IPPM - Peak voltage seen by protected circuit during 14.5 A transient; determines downstream component voltage stress. |
| PPPM (Peak Pulse Power) | 600 W - Energy-handling capacity per 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 14.5 A - Maximum transient current the device safely clamps; directly sets minimum trace width and fuse coordination requirements. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in engine control units and industrial motor drives without derating at 85 °C ambient. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm length and 3.94 mm width; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | No polarity marking on device body; terminals are functionally interchangeable for transient suppression on AC or differential lines. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Identical electrical behavior to anode; enables placement without orientation check during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns on differential buses like RS-485 or CAN. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TCT, and ESD testing - required for powertrain and ADAS sensor protection. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance - supports lead-free manufacturing and environmental compliance. |
| 600 W peak pulse power (10/1000 μs) | Handles worst-case load dump and inductive kick events without degradation - reduces need for redundant protection stages. |
| Low clamping ratio (VC/VBR ≈ 1.24) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V and 5 V logic interfacing with sensors and transceivers. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 5 V analog output sensors (e.g., pressure, temperature) in engine control modules from ISO 7637-2 Pulse 5a load dump transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output line and ground, clamping transients within 1 ns response time. Use Value: Limits voltage excursion to ≤41.4 V during 14.5 A surge, preventing latch-up or gate oxide damage in downstream ADC input stages. |
Use Scenario: Shielding CAN_H and CAN_L lines in body control modules against ESD (IEC 61000-4-2 ±8 kV contact) and burst noise. IC Role / Device Role / Timing Role: Differential pair protection using two P6SMB30CAHM3/I devices (one per line to ground), leveraging symmetrical clamping. Use Value: Maintains CAN signal integrity by clamping common-mode transients without distorting the 1–5 V differential swing or adding >1 pF capacitance. |
| Industrial PLC Analog Input Protection | Telecom Line Interface Surge Guard |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Series-connected TVS on loop supply line, coordinated with current-limiting resistor to absorb 600 W pulses. Use Value: Prevents op-amp input stage destruction while maintaining loop accuracy via low leakage (<1 μA at 30 V) and stable VBR over temperature. |
Use Scenario: Protecting Ethernet PHY interface lines (e.g., MDI-X pairs) in VoIP gateways against lightning-induced surges on building entry points. IC Role / Device Role / Timing Role: Primary protection stage before gas discharge tube (GDT) secondary clamp, absorbing fast-rising edge energy. Use Value: Fast response (<1 ns) and low VC limit induced voltage on PHY transformer center taps, avoiding saturation and data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a without derating | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 only. |
| 1.5SMC33CA | Higher VBR (33–36.7 V), same VC (45.7 V), larger SMC package (7.11 mm × 6.22 mm), higher thermal mass | Better sustained power handling but incompatible with dense SMT layouts requiring SMB footprint | Choose for industrial power supplies needing higher single-pulse energy absorption and improved thermal stability. |
Compared with SMAJ30CA and 1.5SMC33CA, P6SMB30CAHM3/I uniquely balances 600 W pulse capability, AEC-Q101 qualification, SMB footprint compatibility, and halogen-free construction - making it the optimal choice for automotive and space-constrained industrial designs requiring certified reliability.
Availability
P6SMB30CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, CAN bus nodes, and telecom line interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for P6SMB30CAHM3/I 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The P6SMB series targets board-level transient protection in harsh environments, with design emphasis on AEC-Q101 qualification, robust surge handling, and seamless SMT integration for next-generation vehicle ECUs and smart sensors.
FAQ
What does the "CA" suffix indicate in P6SMB30CAHM3/I?
The "CA" suffix in P6SMB30CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities - essential for protecting AC-coupled or differential signal lines such as CAN, RS-485, or sensor bridges without polarity constraints. This differs from unidirectional "A" variants that require correct anode/cathode orientation.
Is P6SMB30CAHM3/I suitable for automotive applications?
Yes, P6SMB30CAHM3/I is AEC-Q101 qualified (as indicated by the "HM3" suffix), having passed stress tests including high-temperature operating life, temperature cycling, and ESD immunity. It is explicitly intended for automotive use cases such as engine control unit sensor protection, body electronics, and infotainment interface surge suppression.
What is the maximum clamping voltage of P6SMB30CAHM3/I and why does it matter?
The maximum clamping voltage (VC) of P6SMB30CAHM3/I is 41.4 V at 14.5 A peak pulse current. This value defines the highest voltage imposed on the protected circuit during a transient event - critical for ensuring downstream components (e.g., microcontrollers, transceivers, ADCs) remain within their absolute maximum ratings and avoid functional interruption or permanent damage.
How does the HM3 suffix affect P6SMB30CAHM3/I's compliance and assembly process?
The HM3 suffix indicates P6SMB30CAHM3/I is halogen-free, RoHS-compliant, and qualified to MSL Level 1 (peak reflow temperature 260 °C). This ensures compatibility with lead-free soldering processes, eliminates toxic emissions during rework or end-of-life disposal, and satisfies strict environmental regulations for automotive and industrial equipment sold globally.
Can P6SMB30CAHM3/I replace P6SMB30A in a design?
No - P6SMB30CAHM3/I is bidirectional with symmetrical clamping, while P6SMB30A is unidirectional and requires correct polarity placement. Substituting them without layout review risks ineffective protection on AC or differential signals. Additionally, HM3 denotes AEC-Q101 qualification and halogen-free construction, whereas base P6SMB30A lacks those certifications and material attributes.
P6SMB30CAHM3/I 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):
- 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:
- 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)
P6SMB30CAHM3/I FAQ
1.How can I place an order for P6SMB30CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CAHM3/I 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 P6SMB30CAHM3/I reliable?
The price and inventory of P6SMB30CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB30CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB30CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CAHM3/I?
P6SMB30CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CAHM3/I 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 P6SMB30CAHM3/I?
For technical support, including P6SMB30CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CAHM3/I requirements.
6.How does Aetrix verify that P6SMB30CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB30CAHM3/I 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 P6SMB30CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB30CAHM3/I?
All P6SMB30CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CAHM3/I, 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 P6SMB30CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB30CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CAHM3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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