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Vishay General Semiconductor - Diodes Division P6SMB15CAHM3_B/I
- Part No.:
- P6SMB15CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHM3_B/I.pdf
- Description:
- 600W,15V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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Product details
Overview
P6SMB15CAHM3_B/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 or 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 halogen-free, RoHS-compliant, AEC-Q101 qualified, and used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the P6SMB15CAHM3_B/I datasheet, P6SMB15CAHM3_B/I pinout, P6SMB15CAHM3_B/I application, or P6SMB15CAHM3_B/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, and thermal derating behavior above 25 °C ambient.
Technical Context
This device operates symmetrically in both directions, with identical breakdown (VBR min/max = 14.3–15.8 V at 1 mA), clamping (VC = 21.2 V at IPPM), and leakage (ID ≤ 1.0 μA at VWM = 12.8 V) characteristics across polarity. Its glass-passivated junction ensures stable surge response and low incremental surge resistance.
The SMB (DO-214AA) package supports automated placement and meets MSL level 1 (260 °C peak reflow). Thermal resistance is RθJA = 100 °C/W (typical) and RθJL = 20 °C/W (typical), enabling reliable operation up to TJ = +150 °C with appropriate PCB copper pad layout (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum reverse voltage before significant conduction; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at IT = 1 mA - Voltage at which device enters avalanche breakdown; tight tolerance ensures predictable triggering. |
| VC (Clamping Voltage) | 21.2 V at IPPM = 28.3 A - Maximum voltage seen by downstream circuit during 10/1000 μs transient; critical for IC-level protection margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; enables robust ESD and load-dump immunity. |
| ID (Reverse Leakage) | ≤ 1.0 μA at VWM - Minimal standby current draw; preserves signal integrity and battery life in always-on systems. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Low-profile, surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard SMT assembly processes. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as current entry point during positive or negative transients; no fixed polarity required in layout. |
| Terminal 2 | Cathode / Anode (bidirectional) | Complementary terminal to Terminal 1; forms symmetrical clamping path across protected line pair (e.g., CAN_H/CAN_L, RS-485 A/B). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements without compromising surge performance or thermal stability. |
| 600 W peak pulse power (10/1000 μs) | Withstands repeated ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 4 transients when properly mounted. |
| Low clamping ratio (VC/VWM ≈ 1.66) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V or 5 V logic interfacing with higher-voltage buses. |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking; simplifies manufacturing and reduces handling risk. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across sensor supply and ground, absorbing ±100 V transients without forward conduction. Use Value: Prevents latch-up or permanent damage to 12 V–15 V powered sensor ASICs while maintaining <1 μA leakage at nominal bias. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation networks subject to cable-induced surges and ESD events. IC Role / Device Role / Timing Role: Differential-line TVS connected between A and B bus lines, clamping common-mode transients before they reach the transceiver inputs. Use Value: Maintains signal integrity below 21.2 V clamping threshold during 28.3 A surges, preserving data transmission integrity per TIA/EIA-485-A. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Adding secondary-level ESD protection on USB VBUS and D+/D− lines in portable devices where primary protection resides upstream. IC Role / Device Role / Timing Role: Fast-response bidirectional suppressor shunting ±15 kV contact discharge (IEC 61000-4-2) away from USB controller pins. Use Value: Achieves sub-nanosecond response with <21.2 V clamping, preventing gate oxide rupture in 3.3 V USB PHY circuits. |
Use Scenario: Front-end surge protection on ADSL/VDSL line cards exposed to lightning-induced longitudinal surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Paired P6SMB15CAHM3_B/I units configured line-to-ground on tip/ring, limiting differential surges to <21.2 V peak. Use Value: Withstands 600 W pulses per ITU-T K.20/K.21 specifications while maintaining <1 μA leakage at 12.8 V standby. |
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 or industrial 4–20 mA loop protection. | Select when board space is constrained and surge energy is limited to IEC 61000-4-5 Level 2. |
| 1.5KE15CA | Higher PPPM (1500 W), axial-leaded DO-201 package; VWM = 12.8 V, VC = 24.4 V, but not AEC-Q101 qualified or SMT-compatible. | Requires through-hole assembly; unsuitable for automated high-volume production or vibration-prone automotive modules. | Choose only for prototyping or legacy through-hole designs where 1500 W headroom justifies manual assembly trade-offs. |
Compared with SMAJ15CA and 1.5KE15CA, P6SMB15CAHM3_B/I delivers optimal balance of AEC-Q101 qualification, 600 W surge capacity, SMB footprint compatibility, and <1 μA leakage - making it the preferred choice for production automotive and industrial SMT designs requiring certified reliability.
Availability
P6SMB15CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, consumer USB interface protection, and telecom DSL line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB15CAHM3_B/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, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series was developed for high-reliability transient suppression in automotive, industrial, and communications equipment - delivering consistent clamping performance, AEC-Q101 validation, and robust SMT manufacturability in the SMB package.
FAQ
What does the "CA" suffix indicate in P6SMB15CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB15CAHM3_B/I provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB15A), it has no cathode marking and functions identically regardless of polarity applied across its terminals, making it ideal for differential bus protection like CAN or RS-485.
Is P6SMB15CAHM3_B/I suitable for automotive applications?
Yes, P6SMB15CAHM3_B/I is AEC-Q101 qualified (indicated by the "HM3_B" suffix), fully tested for automotive-grade reliability including temperature cycling, high-temperature reverse bias, and surge endurance. It is widely deployed in engine control units, body electronics, and ADAS sensor interfaces where sustained operation at +150 °C and immunity to load dump transients are required.
How does the clamping voltage of P6SMB15CAHM3_B/I compare to its standoff voltage?
P6SMB15CAHM3_B/I has a standoff voltage (VWM) of 12.8 V and a maximum clamping voltage (VC) of 21.2 V at 28.3 A peak pulse current - yielding a clamping ratio of ~1.66. This tight ratio ensures protected downstream ICs experience minimal overvoltage stress during transients, especially critical for 12 V–15 V rail systems where headroom above VWM must be preserved.
What is the significance of the "_B/I" suffix in P6SMB15CAHM3_B/I?
The "_B" denotes AEC-Q101 qualification for the P6SMB15CA variant, while "/I" specifies packaging in 13-inch plastic tape and reel (3200 units per reel). This format ensures compatibility with high-speed pick-and-place equipment and supports continuous SMT production runs - essential for automotive Tier 1 suppliers and industrial OEMs requiring verified traceability and volume consistency.
Can P6SMB15CAHM3_B/I replace P6SMB15A in an existing design?
No - P6SMB15CAHM3_B/I is bidirectional, whereas P6SMB15A is unidirectional with a marked cathode. Substituting them requires verifying circuit topology: P6SMB15CAHM3_B/I may be used across differential lines or AC-coupled paths, but cannot replace P6SMB15A in DC-biased single-ended configurations without redesigning biasing and grounding. Always confirm polarity requirements before interchange.
P6SMB15CAHM3_B/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:
- 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/I FAQ
1.How can I place an order for P6SMB15CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHM3_B/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_B/I reliable?
The price and inventory of P6SMB15CAHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHM3_B/I?
P6SMB15CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHM3_B/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_B/I?
For technical support, including P6SMB15CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB15CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHM3_B/I?
All P6SMB15CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for P6SMB15CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CAHM3_B/I Tags
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ESD9B5.0ST5G
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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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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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