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Vishay General Semiconductor - Diodes Division P6SMB15CAHM3/I
- Part No.:
- P6SMB15CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHM3/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,845
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Product details
Overview
P6SMB15CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 15 V standoff voltage (VWM), 21.2 V maximum clamping voltage at 28.3 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB15CAHM3/I datasheet, P6SMB15CAHM3/I pinout, P6SMB15CAHM3/I application, or P6SMB15CAHM3/I equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low incremental surge resistance, and AEC-Q101 qualification (via HM3 suffix) are required in space-constrained SMB packages.
Technical Context
The P6SMB15CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while its low thermal resistance (RθJL = 20 °C/W) supports reliable energy dissipation during repetitive 0.01% duty-cycle surges.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets J-STD-020 MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Verified avalanche onset range ensuring predictable turn-on under transients |
| VC (Clamping) | 21.2 V at 28.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - Sustains high-energy transients typical of inductive switching or lightning-induced surges |
| IPPM | 28.3 A - Peak surge current capacity enabling protection of 24 V industrial buses and automotive CAN/LIN lines |
| TJ max | 150 °C - Junction temperature limit supporting operation in under-hood or enclosed industrial enclosures |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint optimized for automated placement and board space efficiency |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional clamping node | Either terminal serves as input/output for transient suppression; no DC polarity dependency |
| Case / Body | Thermal path | Direct thermal conduction to PCB copper pads; requires 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum pad area per terminal |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response), improving protection margin |
| Halogen-free, RoHS-compliant | Meets global environmental compliance requirements for industrial and automotive supply chains |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with high-volume manufacturing processes |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor signal lines (e.g., pressure, temperature) in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤21.2 V during 28.3 A surges, preventing ADC saturation and latch-up in AEC-Q100-compliant MCUs. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules subject to field-wiring induced surges. IC Role / Device Role / Timing Role: Primary surge suppression device across input terminals, upstream of optocoupler isolation. Use Value: Absorbs up to 600 W of transient energy without degradation, maintaining channel integrity during factory floor ESD events. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Transient suppression on RS-485/RS-422 differential bus lines in telecom base station remote units. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to ground, providing symmetrical clamping. Use Value: Maintains signal integrity under IEC 61000-4-4 EFT bursts by clamping common-mode spikes within 21.2 V envelope. |
Use Scenario: Secondary-side overvoltage protection on 12–15 V DC outputs of wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Final-stage clamp preventing downstream damage from output capacitor failure or regulator fault. Use Value: Activates at 14.3 V breakdown to shunt fault current before downstream LDOs or USB-PD controllers exceed absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | 400 W peak power (vs. 600 W); same VWM/VC but lower IPPM (19.8 A) | Not rated for AEC-Q101; limited to commercial-grade industrial use | Select when cost sensitivity outweighs surge margin and automotive qualification is unnecessary |
| 1.5KE15CA | Through-hole DO-201 package; higher thermal mass but larger footprint; 600 W rating retained | Requires PCB real estate and wave-solder process; unsuitable for dense SMT layouts | Choose for legacy designs or high-reliability prototyping where manual rework tolerance is prioritized |
Compared with SMAJ15CA and 1.5KE15CA, the P6SMB15CAHM3/I delivers identical clamping performance in a smaller SMB package while adding AEC-Q101 qualification - making it optimal for new automotive and space-constrained industrial designs requiring verified reliability.
Availability
P6SMB15CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB15CAHM3/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-energy transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and compatibility with automated SMT assembly.
FAQ
What does the "CA" suffix indicate in P6SMB15CAHM3/I?
The "CA" suffix denotes a bidirectional configuration: the P6SMB15CAHM3/I clamps voltage transients equally in both polarities, eliminating the need for polarity-aware layout. This makes it ideal for protecting AC-coupled signal lines, differential buses like RS-485, or any application where voltage reversals may occur - unlike unidirectional variants (e.g., P6SMB15A) that require cathode orientation.
Is P6SMB15CAHM3/I suitable for automotive applications?
Yes - the "HM3" suffix certifies that P6SMB15CAHM3/I is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including temperature cycling, humidity bias, and mechanical shock, validating its use in engine control units, body control modules, and ADAS sensor interfaces where reliability under harsh conditions is mandatory.
How does the clamping voltage of P6SMB15CAHM3/I compare to its standoff voltage?
P6SMB15CAHM3/I has a standoff voltage (VWM) of 12.8 V and a maximum clamping voltage (VC) of 21.2 V at 28.3 A. This 8.4 V differential represents the voltage "overshoot" during surge conduction - a critical design margin that must remain below the absolute maximum rating of downstream ICs, such as the 24 V tolerant inputs of many industrial microcontrollers.
What PCB layout guidance applies to P6SMB15CAHM3/I?
Per Vishay's datasheet, P6SMB15CAHM3/I requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated thermal performance and surge capability. Traces should be short and wide to minimize inductance; avoid vias near terminals. The SMB package's low RθJL (20 °C/W) depends on this pad layout - reducing pad size degrades clamping performance and risks thermal runaway during repetitive surges.
Can P6SMB15CAHM3/I replace P6SMB15A in an existing design?
No - P6SMB15CAHM3/I is bidirectional, while P6SMB15A is unidirectional with a marked cathode. Swapping them without layout revision risks improper clamping or open-circuit behavior during negative transients. If upgrading to bidirectional protection, verify system-level polarity tolerance and update schematic symbols and footprints to reflect symmetrical terminal function in P6SMB15CAHM3/I.
P6SMB15CAHM3/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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
P6SMB15CAHM3/I FAQ
1.How can I place an order for P6SMB15CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHM3/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 P6SMB15CAHM3/I reliable?
The price and inventory of P6SMB15CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHM3/I?
P6SMB15CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHM3/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 P6SMB15CAHM3/I?
For technical support, including P6SMB15CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHM3/I requirements.
6.How does Aetrix verify that P6SMB15CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHM3/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 P6SMB15CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHM3/I?
All P6SMB15CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHM3/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 P6SMB15CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB15CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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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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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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