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Vishay General Semiconductor - Diodes Division P6SMB30CAHM3_A/I
- Part No.:
- P6SMB30CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CAHM3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,368
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Product details
Overview
P6SMB30CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 45.7 V maximum clamping voltage (VC) at 14.5 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB30CAHM3_A/I datasheet, P6SMB30CAHM3_A/I pinout, P6SMB30CAHM3_A/I application, or P6SMB30CAHM3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient events exceeding VWM (30 V), it avalanches symmetrically in both directions to clamp voltage at ≤45.7 V while diverting up to 14.5 A (10/1000 μs). Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns).
Thermally, it uses an SMB (DO-214AA) package with RθJA = 100 °C/W and RθJL = 20 °C/W, rated for TJ = -65 °C to +150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated per JESD22-B102 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 33.3 V min - Voltage at which device enters avalanche conduction under 1 mA test current |
| VC (Clamping Voltage) | 45.7 V max at IPPM = 14.5 A - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 600 W - Sustained surge energy handling per single 10/1000 μs event at TA = 25 °C |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal DC loading on protected line during normal operation |
| TJ Max | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals for AC-coupled or floating-line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One terminal of symmetrical PN junction; connects to protected line or ground reference |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical PN junction; functionally identical to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals or ungrounded differential lines without polarity constraints |
| 600 W peak pulse rating (10/1000 μs) | Withstands IEC 61000-4-5 Level 3 (1 kV line-to-ground) surges in properly decoupled systems |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes stress on downstream ICs by limiting overvoltage excursion tightly around breakdown |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and chassis ground to clamp induced spikes before they reach the transceiver input. Use Value: Maintains signal integrity under ±100 V/50 ms load dump pulses while meeting AEC-Q100 stress requirements. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pair (A/B) and ground to suppress common-mode transients. Use Value: Limits voltage excursion to ≤45.7 V during 4 kV EFT (IEC 61000-4-4) events, preventing transceiver latch-up or damage. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from induced surges on outdoor-facing telecom ports. IC Role / Device Role / Timing Role: Primary surge suppression stage ahead of GDT or polymer PTC secondary protection. Use Value: Responds in <1 ns to divert >10 A surges, reducing let-through energy to levels compatible with integrated PHY ESD structures. |
Use Scenario: Adding robust external surge protection to USB 2.0 data lines in smart home hubs exposed to user-handling ESD and nearby switching noise. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 100 pF typical) bidirectional clamp on D+/D− lines referenced to VBUS or ground. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) to <45.7 V without degrading 480 Mbps signal 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 |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), lower PPPM (400 W), SMA package (higher RθJA = 150 °C/W) | Limited to lower-energy transients; unsuitable for AEC-Q101 automotive use | Select when cost or board space is prioritized over automotive qualification and 600 W surge margin |
| 1.5KE30CA | Same VWM (30 V), higher PPPM (1500 W), axial DO-201 package (through-hole) | Requires PCB real estate and assembly process change; not SMT-compatible | Choose for legacy through-hole designs needing higher surge headroom where automated placement is not required |
Compared with SMAJ30CA and 1.5KE30CA, P6SMB30CAHM3_A/I delivers AEC-Q101 compliance, superior thermal dissipation in SMB package, and optimal balance of surge rating, size, and manufacturability for high-volume automotive and industrial SMT production.
Availability
P6SMB30CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and consistent SMB package form factor.
Supply support for P6SMB30CAHM3_A/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 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 telecom infrastructure - engineered for low clamping voltage, repeatable surge endurance, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix indicate in P6SMB30CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration: P6SMB30CAHM3_A/I provides symmetrical clamping in both forward and reverse directions, making it suitable for AC-coupled lines, differential buses like RS-485, or any application where polarity cannot be guaranteed. This differs from unidirectional "A" variants that require correct cathode orientation.
Is P6SMB30CAHM3_A/I qualified for automotive applications?
Yes, P6SMB30CAHM3_A/I is AEC-Q101 qualified - confirmed by the "HM3" suffix, indicating halogen-free, RoHS-compliant construction validated for automotive-grade reliability including temperature cycling, high-temperature reverse bias (HTRB), and ESD testing. It is approved for use in engine control, body electronics, and ADAS sensor modules.
What is the clamping voltage of P6SMB30CAHM3_A/I at its rated peak pulse current?
P6SMB30CAHM3_A/I has a maximum clamping voltage (VC) of 45.7 V at 14.5 A peak pulse current (IPPM), measured under standardized 10/1000 μs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB30CAHM3_A/I compare thermally to SMA or SMC packages?
P6SMB30CAHM3_A/I in SMB (DO-214AA) offers RθJA = 100 °C/W and RθJL = 20 °C/W - better than SMA (RθJA ≈ 150 °C/W) but less efficient than SMC (RθJA ≈ 60 °C/W). Its thermal performance supports 600 W surge dissipation when mounted on 5.0 mm × 5.0 mm copper pads, striking a balance between compact size and robust thermal handling for most industrial and automotive layouts.
Can P6SMB30CAHM3_A/I replace P6SMB30A in a design?
No - P6SMB30CAHM3_A/I is bidirectional, while P6SMB30A is unidirectional. Substituting them requires verifying circuit topology: P6SMB30A requires correct cathode orientation and only clamps in reverse bias, whereas P6SMB30CAHM3_A/I clamps symmetrically. Using P6SMB30CAHM3_A/I in place of P6SMB30A may cause unintended conduction in DC-biased lines unless the design accommodates bidirectional behavior.
P6SMB30CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB30CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CAHM3_A/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_A/I reliable?
The price and inventory of P6SMB30CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB30CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CAHM3_A/I?
P6SMB30CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CAHM3_A/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_A/I?
For technical support, including P6SMB30CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB30CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB30CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB30CAHM3_A/I?
All P6SMB30CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB30CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CAHM3_A/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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