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Vishay General Semiconductor - Diodes Division P6SMB15CAHM3_A/H
- Part No.:
- P6SMB15CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,287
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Product details
Overview
P6SMB15CAHM3_A/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 capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB15CAHM3_A/H datasheet, P6SMB15CAHM3_A/H pinout, P6SMB15CAHM3_A/H application, or P6SMB15CAHM3_A/H equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling fast response to ESD and lightning-induced transients.
The P6SMB15CAHM3_A/H is rated for repetitive 10/1000 μs pulses at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements, with matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Verified avalanche onset range ensuring predictable turn-on during overvoltage events. |
| VC (Clamping) | 21.2 V at 28.3 A - Peak voltage seen by downstream components during worst-case 600 W transient; critical for IC voltage margining. |
| IPPM | 28.3 A - Peak pulse current survivability under 10/1000 μs waveform; determines protection level against IEC 61000-4-5 surges. |
| PPPM | 600 W - Transient energy absorption capacity; enables robust protection of 3.3 V/5 V/12 V rails without cascading failure. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs minimum copper pad area (0.2" × 0.2") required for thermal reliability. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Cathode band not marked - bidirectional symmetry eliminates polarity orientation requirement during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | Accepts surge current from either terminal; bidirectional conduction enables single-device protection of AC-coupled or floating lines. |
| Cathode | Transient current exit point (either direction) | Completes low-impedance path to ground or return rail during clamping; no fixed polarity simplifies layout and reduces BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signal lines, differential buses (e.g., RS-485), and floating power domains without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance, supporting industrial-grade EMC compliance. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak, eliminating bake requirements and enabling direct placement into high-volume SMT lines. |
| Glass-passivated junction | Ensures stable leakage (<1 μA at VWM) and repeatable breakdown over 1000+ surge cycles, critical for long-life embedded systems. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching PHY or MCU pins. Use Value: Maintains signal integrity under ±25 V transients while adding zero propagation delay or capacitance penalty to 250 kbps–1 Mbps data links. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) against EFT bursts and lightning-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF), symmetrical clamp across A/B differential pair to prevent latch-up and permanent damage to transceiver inputs. Use Value: Enables >1000 surge cycles at 4 kV (IEC 61000-4-4/5) without parameter drift, extending field-replaceable unit lifetime beyond 10 years. |
| Consumer Power Adapter Input Stage | Medical Grade Patient Monitoring Signal Lines |
Use Scenario: Secondary-side transient suppression on 5 V/12 V DC outputs of wall adapters and USB-C PD chargers exposed to plug/unplug noise and shared-rail coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VOUT and GND to clamp overshoot during dynamic load switching and output short recovery. Use Value: Limits voltage excursions to ≤21.2 V, preventing overvoltage shutdown or damage to downstream LDOs and microcontrollers. |
Use Scenario: Isolation barrier-adjacent protection for analog front-end inputs (ECG, SpO₂, EEG) where leakage current and biocompatibility are critical. IC Role / Device Role / Timing Role: Low-leakage (<1 μA at 12.8 V), halogen-free TVS suppressing ESD (IEC 61000-4-2 ±15 kV air) without compromising patient isolation integrity. Use Value: Meets IEC 60601-1 creepage/clearance and leakage current limits while providing <1 ns response to electrostatic discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-T | Same VWM/VC, but non-AEC-Q101; RθJA = 110 °C/W; commercial-grade only. | Lacks automotive qualification and tighter MSL/whisker specs; suitable for consumer/industrial but not under-hood use. | Select when cost sensitivity outweighs automotive reliability requirements and thermal margin allows higher RθJA. |
| 1.5SMC15CA | Same electrical specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); 1.5 kW rating (over-specified). | Requires larger PCB footprint and higher assembly cost; better for high-energy surges but over-engineered for 600 W needs. | Choose only if legacy board space accommodates SMC or future-proofing for >600 W surge levels is mandated. |
Compared with SMBJ15CA-T and 1.5SMC15CA, P6SMB15CAHM3_A/H delivers AEC-Q101 validation, optimized SMB footprint, and MSL Level 1 process compatibility - making it the preferred choice for space-constrained, automotive-qualified, and high-volume SMT deployments requiring guaranteed reliability.
Availability
P6SMB15CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, medical monitoring equipment, and consumer power supplies requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB15CAHM3_A/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and computing applications where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of P6SMB15CAHM3_A/H at its rated peak pulse current?
The P6SMB15CAHM3_A/H has a maximum clamping voltage (VC) of 21.2 V at 28.3 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 21.2 V during a 600 W transient event - essential for protecting 3.3 V, 5 V, and 12 V logic and analog components. The P6SMB15CAHM3_A/H maintains this clamping performance across its full operating temperature range.
Is P6SMB15CAHM3_A/H qualified for automotive applications?
Yes, P6SMB15CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in Vishay's ordering information and thermal characteristics tables. It undergoes stress testing for high-temperature operating life, temperature cycling, and mechanical shock per AEC-Q101 Rev D. This qualification makes P6SMB15CAHM3_A/H suitable for under-hood, body control, and ADAS sensor applications where reliability under harsh environmental conditions is required.
What does the "CA" suffix mean in P6SMB15CAHM3_A/H?
The "CA" suffix in P6SMB15CAHM3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P6SMB15A), the CA version has no cathode marking and can be placed without orientation concerns. This is critical for protecting AC-coupled signals, differential buses (RS-485, CAN), and floating power domains where polarity reversal may occur.
What is the thermal resistance of P6SMB15CAHM3_A/H, and how does it affect PCB layout?
P6SMB15CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value requires adherence to Vishay's recommended pad layout to avoid thermal runaway during repetitive surge events. Reducing pad area increases RθJA, degrading power handling; increasing copper area improves dissipation but must respect spacing rules for high-voltage isolation. The P6SMB15CAHM3_A/H thermal design is validated only with the specified mounting condition.
How does P6SMB15CAHM3_A/H compare to older P6SMB15CA variants in terms of packaging and compliance?
P6SMB15CAHM3_A/H uses the HM3 suffix, indicating halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. Earlier P6SMB15CA variants (e.g., with E3 or M3 suffixes) lack automotive qualification and may not meet the same MSL Level 1 or lead finish requirements. The "_A/H" revision code confirms alignment with the 09-Jan-2024 datasheet revision (Document Number: 88370), ensuring full specification compliance for new designs using P6SMB15CAHM3_A/H.
P6SMB15CAHM3_A/H 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):
- 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_A/H FAQ
1.How can I place an order for P6SMB15CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHM3_A/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_A/H reliable?
The price and inventory of P6SMB15CAHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHM3_A/H?
P6SMB15CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHM3_A/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_A/H?
For technical support, including P6SMB15CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB15CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHM3_A/H?
All P6SMB15CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for P6SMB15CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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