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Vishay General Semiconductor - Diodes Division P6SMB15CAHE3_A/I
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- Part No.:
- P6SMB15CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHE3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,867
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Product details
Overview
P6SMB15CAHE3_A/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 AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P6SMB15CAHE3_A/I datasheet, P6SMB15CAHE3_A/I pinout, P6SMB15CAHE3_A/I application, or P6SMB15CAHE3_A/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) under real-world PCB layout constraints.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping behavior without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, critical for repeatable transient suppression during repetitive ESD or load-switching events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its 100 °C/W junction-to-ambient thermal resistance assumes mounting on 0.2" × 0.2" copper pads - a design constraint directly impacting sustained power handling in high-duty-cycle applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Measured voltage where device enters avalanche conduction; ensures predictable turn-on |
| VC (Clamping) | 21.2 V at 28.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient; determines downstream component stress |
| PPPM | 600 W - Peak transient energy absorption capacity; enables protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 28.3 A - Maximum non-repetitive surge current supported; sets minimum trace width and fuse coordination requirements |
| TJ max. | 150 °C - Absolute maximum junction temperature; constrains ambient operating range and derating above 25 °C |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires defined 0.2" × 0.2" copper pad layout for datasheet-rated performance |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical avalanche junction; conducts during positive overvoltage events |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical junction; conducts during negative overvoltage events; no band marking for bidirectional types |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance |
| 600 W peak pulse power | Supports IEC 61000-4-5 4th-level surge immunity (4 kV line-to-line, 2 Ω source impedance) in compact SMB footprint |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors, preserving system robustness |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends during vehicle battery disconnection events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and ground potential differences. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted adjacent to input terminals to limit voltage excursion during 1 kV/500 A surge tests. Use Value: Maintains signal integrity and avoids false triggering or calibration drift in precision measurement circuits under industrial EMI conditions. |
| Consumer Power Adapter Output Clamping | Telecom Ethernet PHY Interface Protection |
Use Scenario: Suppressing switching noise and flyback spikes on DC output rails of wall adapters powering USB-C PD devices and IoT hubs. IC Role / Device Role / Timing Role: Secondary-side TVS placed between VOUT and GND to clamp overshoot during dynamic load changes. Use Value: Eliminates need for oversized output capacitors while ensuring compliance with UL 62368-1 transient immunity requirements. |
Use Scenario: Protecting 10/100/1000BASE-T Ethernet PHY transceivers from ESD and lightning-induced surges entering via RJ45 magnetics. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS installed on differential pairs (e.g., TX+/TX−) before transformer center taps. Use Value: Preserves signal rise/fall times (< 100 ps degradation) while meeting IEC 61000-4-2 ±8 kV contact discharge immunity. |
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) | Limited to lower-energy transients (IEC 61000-4-5 Level 3); unsuitable for automotive load-dump scenarios | Select when board space is constrained and surge energy does not exceed 40 mJ |
| SMCJ15CA | Same VWM and VC, but higher PPPM (1500 W); SMC package (larger, lower RθJA = 25 °C/W) | Overqualified for most signal-line protection; requires larger PCB area and higher cost | Choose only when protecting high-current power rails subject to repeated 10/1000 μs surges > 100 A |
Compared with SMAJ15CA and SMCJ15CA, the P6SMB15CAHE3_A/I delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial signal-line protection where Level 4 surge immunity and long-term reliability are mandatory.
Availability
P6SMB15CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom Ethernet PHY protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for P6SMB15CAHE3_A/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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P6SMB series was developed specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, bidirectional symmetry, and AEC-Q101 validation are essential.
FAQ
What is the clamping voltage of P6SMB15CAHE3_A/I at its rated peak pulse current?
The P6SMB15CAHE3_A/I has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current (IPPM) of 28.3 A using a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB15CAHE3_A/I maintains this clamping performance bidirectionally due to its symmetrical junction structure.
Is P6SMB15CAHE3_A/I suitable for automotive applications?
Yes, P6SMB15CAHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in Vishay's ordering information table (page 3, footnote 1). It is rated for operation from −65 °C to +150 °C and meets MSL Level 1 for lead-free reflow, making it appropriate for under-hood and body-control module applications. The P6SMB15CAHE3_A/I also supports automotive-specific surge standards including ISO 7637-2 and IEC 61000-4-5.
What does the "CA" suffix signify in P6SMB15CAHE3_A/I?
The "CA" suffix in P6SMB15CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB15A), the P6SMB15CAHE3_A/I has no cathode marking and functions identically regardless of polarity applied across its terminals, simplifying layout for AC-coupled or floating signal paths.
What is the thermal resistance of P6SMB15CAHE3_A/I, and how does it affect layout?
The P6SMB15CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, specified when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal copper area; increasing pad size or adding internal ground planes reduces RθJA. Layout must replicate this pad geometry to achieve the 600 W peak pulse rating - undersized traces will cause premature thermal failure during repetitive surges.
How does P6SMB15CAHE3_A/I differ from unidirectional P6SMB15AHE3_A/I?
The P6SMB15CAHE3_A/I is bidirectional with symmetrical clamping in both directions and no polarity marking, whereas P6SMB15AHE3_A/I is unidirectional with a cathode band and only clamps reverse-biased transients. Their VWM (12.8 V), VBR (14.3–15.8 V), and VC (21.2 V) are identical, but the unidirectional version conducts forward current up to 100 A (IFSM), while the bidirectional P6SMB15CAHE3_A/I does not specify IFSM due to lack of defined anode/cathode orientation.
P6SMB15CAHE3_A/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:
- 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:
- -
- 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_A/I FAQ
1.How can I place an order for P6SMB15CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHE3_A/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 P6SMB15CAHE3_A/I reliable?
The price and inventory of P6SMB15CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHE3_A/I?
P6SMB15CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHE3_A/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 P6SMB15CAHE3_A/I?
For technical support, including P6SMB15CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB15CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHE3_A/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 P6SMB15CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHE3_A/I?
All P6SMB15CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHE3_A/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 P6SMB15CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB15CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15CAHE3_A/I Tags
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