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Vishay General Semiconductor - Diodes Division P6SMB15CAHM3_B/H
- Part No.:
- P6SMB15CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHM3_B/H.pdf
- Description:
- 600W,15V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,121
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Product details
Overview
P6SMB15CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, 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 rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB15CAHM3_B/H datasheet, P6SMB15CAHM3_B/H pinout, P6SMB15CAHM3_B/H application, or P6SMB15CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped surge protector: during transient overvoltage events, it avalanches symmetrically in both directions due to its bidirectional construction, limiting voltage across protected circuitry to ≤21.2 V at 28.3 A. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 12.8 V).
Thermally, it delivers 5.0 W steady-state power dissipation at 50 °C ambient when mounted on infinite heatsink, with junction-to-ambient thermal resistance of 100 °C/W and junction-to-lead resistance of 20 °C/W - enabling reliable operation up to 150 °C junction temperature under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1.0 mA test current - guaranteed avalanche initiation range ensuring predictable turn-on during transients |
| VC (Clamping Voltage) | 21.2 V at 28.3 A IPPM - peak voltage imposed on protected circuit during worst-case 10/1000 μs surge, critical for downstream IC survival |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity for standardized 10/1000 μs waveform; determines survivability against lightning-induced or inductive-switching surges |
| ID (Max Reverse Leakage) | 1.0 μA at VWM - negligible standby current that avoids loading sensitive analog or low-power circuits |
| TJ max | 150 °C - maximum allowable junction temperature supporting operation in under-hood automotive or high-ambient industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band not marked (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (reverse polarity) | Accepts surge current during negative-going transients; symmetrical with cathode for bidirectional clamping |
| Cathode | Transient current entry point (forward polarity) | Accepts surge current during positive-going transients; electrically identical to anode in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power (10/1000 μs) | Supports robust immunity to IEC 61000-4-5 Level 3/4 surges in industrial control and automotive subsystems |
| AEC-Q101 qualified (HM3_B suffix) | Validated for automotive applications including body electronics, ADAS sensors, and infotainment power rails |
| MSL Level 1, 260 °C peak reflow | Permits standard lead-free SMT assembly without pre-baking or special handling |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp transients before they reach signal conditioning amplifiers or microcontroller ADC inputs. Use Value: Limits induced voltage to ≤21.2 V during 28.3 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor interface ICs. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers from inductive kickback and EFT bursts in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC I/O lines to absorb energy from relay coil de-energization and electrostatic discharge events. Use Value: Maintains system uptime by preventing false triggering or permanent failure of optocouplers and level-shifting buffers under repetitive 600 W surges. |
| Telecom Line Interface Protection | Consumer Device USB/Power Rail Clamping |
Use Scenario: Safeguarding Ethernet PHY interfaces or RS-485 transceivers in network equipment exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage clamping device upstream of GDT or polymer PTC, reducing let-through voltage to secondary protection stages. Use Value: Achieves <21.2 V clamping at 28.3 A, enabling use of lower-voltage-rated secondary protectors and minimizing PCB space vs. unidirectional solutions. |
Use Scenario: Suppressing ESD and coupling noise on 5 V USB VBUS or internal 3.3 V power rails in smart home hubs and portable audio devices. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to USB connectors or LDO outputs to shunt fast transients before reaching USB controller or PMIC. Use Value: Delivers sub-μA leakage at 12.8 V, avoiding battery drain in always-on consumer products while meeting IEC 61000-4-2 ±8 kV contact discharge requirements. |
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), VC = 24.4 V at 24.4 A; lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required | Select when board space is constrained and surge threat level is limited to IEC 61000-4-4 EFT only |
| SMCJ15CA | Same VWM (12.8 V), VC = 24.4 V at 43.4 A; higher PPPM (1500 W); larger SMC package (DO-214AB) | Overqualified for cost-sensitive consumer applications; requires larger PCB pad layout and higher assembly cost | Choose for industrial motor drives or PoE injectors where >1 kW surge immunity is mandated |
Compared with SMAJ15CA and SMCJ15CA, P6SMB15CAHM3_B/H delivers optimal balance of 600 W surge handling, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for automotive and industrial designs requiring verified reliability without over-engineering.
Availability
P6SMB15CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer USB power rail protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB15CAHM3_B/H 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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, robust surge handling, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix indicate in P6SMB15CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration: P6SMB15CAHM3_B/H provides symmetrical clamping for both positive- and negative-polarity transients, unlike unidirectional "A" variants. This eliminates polarity concerns during PCB layout and enables protection of AC-coupled or floating signal paths without external diode pairing. The device achieves identical VBR, VWM, and VC specifications in both directions.
Is P6SMB15CAHM3_B/H suitable for automotive applications?
Yes - P6SMB15CAHM3_B/H carries the HM3_B suffix, confirming halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22, making it approved for under-hood and cabin electronics such as body control modules, sensor interfaces, and infotainment power supplies.
What is the maximum clamping voltage of P6SMB15CAHM3_B/H and under what conditions?
The maximum clamping voltage (VC) of P6SMB15CAHM3_B/H is 21.2 V, measured at a peak pulse current (IPPM) of 28.3 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on protected circuitry during worst-case surge events.
How does the SMB (DO-214AA) package of P6SMB15CAHM3_B/H compare to SMA or SMC packages?
The SMB package of P6SMB15CAHM3_B/H offers a 4.57 mm × 3.94 mm footprint - larger than SMA (DO-214AC) for better thermal dissipation and lower RθJA (100 °C/W vs. ~150 °C/W for SMA), yet smaller than SMC (DO-214AB) to conserve PCB area. Its 2.20 mm height supports low-profile designs while maintaining 600 W surge capability, striking a balance between power handling and space efficiency.
Does P6SMB15CAHM3_B/H require a heatsink for continuous operation?
No - P6SMB15CAHM3_B/H is rated for 5.0 W steady-state power dissipation at TA = 50 °C when mounted on an infinite heatsink, but typical applications involve only transient conduction. For normal operation, no external heatsink is needed; thermal management relies on PCB copper pads (minimum 0.2" × 0.2" per terminal) to conduct heat away from the junction during short-duration surges.
P6SMB15CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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_B/H FAQ
1.How can I place an order for P6SMB15CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHM3_B/H 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_B/H reliable?
The price and inventory of P6SMB15CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHM3_B/H?
P6SMB15CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHM3_B/H 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_B/H?
For technical support, including P6SMB15CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB15CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHM3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHM3_B/H?
All P6SMB15CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHM3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for P6SMB15CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CAHM3_B/H Tags
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