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Vishay General Semiconductor - Diodes Division P6SMB15CAHE3/5B
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- Part No.:
- P6SMB15CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHE3/5B.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,213
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Product details
Overview
P6SMB15CAHE3/5B 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. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive and industrial electronics protection.
For engineers reviewing the P6SMB15CAHE3/5B datasheet, P6SMB15CAHE3/5B pinout, P6SMB15CAHE3/5B application, or P6SMB15CAHE3/5B equivalent, this device serves as a robust, low-profile TVS solution for bidirectional overvoltage protection in space-constrained PCB layouts requiring high surge immunity and automotive-grade reliability.
Technical Context
The P6SMB15CAHE3/5B operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±21.2 V while maintaining ≤1.0 μA reverse leakage at 12.8 V. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Thermally, it exhibits a junction-to-ambient thermal resistance of 100 °C/W and supports continuous operation up to +150 °C junction temperature. Its SMB (DO-214AA) package enables automated placement and meets UL 94 V-0 flammability rating, with matte tin-plated leads compliant to J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 14.3–15.8 V at 1.0 mA - Verified avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 21.2 V at 28.3 A (10/1000 μs) - Peak voltage seen by protected circuit under rated surge; critical for IC/MOSFET survival. |
| PPPM | 600 W - Sustains single 10/1000 μs surge events without failure; enables protection against IEC 61000-4-5 Level 3/4 surges. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint; compatible with standard SMT reflow profiles and MSL level 1 handling. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| RoHS & Halogen-Free | No - HE3 suffix indicates RoHS-compliant only; halogen-free version requires HM3 suffix (e.g., P6SMB15CAHM3/5B). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | Accepts surge current from either terminal due to bidirectional symmetry; no cathode band marking. |
| Cathode | Transient current exit (either direction) | Functions identically to anode; terminals are interchangeable in layout - no polarity-dependent routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 600 W peak pulse power | Withstands repetitive 10/1000 μs surges at 0.01% duty cycle - suitable for industrial motor drive and telecom line protection. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on downstream components - critical for 15 V-rated logic and analog front-ends. |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock - supports Tier-1 supply chain requirements. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirements and simplifies SMT production planning. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to shunt transients before reaching sensitive interface circuitry. Use Value: Limits induced voltage to ≤21.2 V during 10/1000 μs surges up to 28.3 A - preserving signal integrity and preventing latch-up in 12 V automotive systems. |
Use Scenario: Safeguarding digital and analog I/O channels on programmable logic controller modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on 24 V DC input/output lines, mounted adjacent to terminal blocks or optocoupler inputs. Use Value: Clamps 600 W transients within nanoseconds, reducing risk of microcontroller reset or ADC offset drift caused by voltage overshoot. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 ports or twisted-pair lines. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential pairs, used alongside common-mode chokes and secondary TVS arrays. Use Value: Symmetric clamping maintains signal balance while limiting differential-mode surge energy to levels survivable by 100BASE-TX receivers. |
Use Scenario: Secondary-side surge protection on 12–19 V DC outputs of wall adapters and USB-C PD chargers against user-induced short-circuit transients. IC Role / Device Role / Timing Role: Output rail clamp preventing overvoltage damage to connected devices during output capacitor failure or cable hot-plug events. Use Value: 21.2 V clamping voltage ensures compatibility with 15 V nominal rails and provides ≥2 V headroom for 12 V logic-level peripherals. |
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 | Same VWM (12.8 V) and VC (24.4 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less suitable for automotive load-dump scenarios requiring 600 W rating. | Select when board space is constrained and surge energy is ≤400 W - verify thermal derating at elevated ambient temperatures. |
| 1.5KE15CA | Higher PPPM (1500 W), axial-leaded DO-201 package; larger size, manual assembly only; VWM = 12.8 V, VC = 24.4 V. | Not SMT-compatible; used in prototyping or legacy through-hole designs where reflow is unavailable. | Choose for high-energy lab testing or repair scenarios where leaded parts are acceptable and PCB real estate is not limited. |
Compared with SMAJ15CA and 1.5KE15CA, P6SMB15CAHE3/5B delivers optimal balance of 600 W surge capability, SMB SMT compatibility, and AEC-Q101 qualification - making it the preferred choice for volume automotive and industrial PCBs requiring automated assembly and validated reliability.
Availability
P6SMB15CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB15CAHE3/5B 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 is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial automation, and telecommunications infrastructure where consistent clamping behavior and AEC-Q101 validation are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB15CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB15CAHE3/5B functions identically in both polarities, with no cathode marking and symmetrical clamping characteristics. This differs from unidirectional variants (e.g., P6SMB15A), which require correct polarity orientation during placement and feature a cathode band.
Is P6SMB15CAHE3/5B suitable for protecting 12 V automotive circuits?
Yes - P6SMB15CAHE3/5B has a 12.8 V standoff voltage (VWM) and 21.2 V clamping voltage, providing appropriate margin above nominal 12 V systems while limiting surge voltage to a safe level for 15 V-tolerant ICs. Its AEC-Q101 qualification further confirms suitability for automotive use cases including engine bays and body control modules.
How does the HE3 suffix differ from E3 or HM3 in P6SMB15CAHE3/5B?
The HE3 suffix in P6SMB15CAHE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant, commercial grade only) and HM3 (halogen-free, RoHS-compliant, AEC-Q101 qualified). The "H" prefix in HE3 explicitly denotes automotive qualification per the Vishay ordering nomenclature.
What is the maximum peak pulse current (IPPM) for P6SMB15CAHE3/5B?
The maximum peak pulse current (IPPM) for P6SMB15CAHE3/5B is 28.3 A under the standard 10/1000 μs double-exponential waveform. This value is derived from its 600 W peak pulse power rating and 21.2 V clamping voltage (IPPM = PPPM / VC), and is confirmed in the Vishay P6SMB datasheet Table on page 2.
Can P6SMB15CAHE3/5B be used in place of P6SMB15A in an existing design?
No - P6SMB15CAHE3/5B is bidirectional, while P6SMB15A is unidirectional. Substituting them requires verifying circuit topology: bidirectional use cases (e.g., AC lines, differential buses) benefit from P6SMB15CAHE3/5B, but unidirectional placements with defined polarity (e.g., DC power rail to ground) must retain P6SMB15A or confirm layout compatibility with symmetric terminals.
P6SMB15CAHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB15CAHE3/5B FAQ
1.How can I place an order for P6SMB15CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHE3/5B 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 P6SMB15CAHE3/5B reliable?
The price and inventory of P6SMB15CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHE3/5B?
P6SMB15CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHE3/5B 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 P6SMB15CAHE3/5B?
For technical support, including P6SMB15CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB15CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHE3/5B 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 P6SMB15CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHE3/5B?
All P6SMB15CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHE3/5B, 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 P6SMB15CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB15CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CAHE3/5B Tags
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