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Vishay General Semiconductor - Diodes Division P6SMB47CAHE3/52
- Part No.:
- P6SMB47CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CAHE3/52.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,895
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Product details
Overview
P6SMB47CAHE3/52 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 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB47CAHE3/52 datasheet, P6SMB47CAHE3/52 pinout, P6SMB47CAHE3/52 application, or P6SMB47CAHE3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) of 44.7–49.4 V at 1 mA test current and reverse leakage (ID) ≤1.0 μA at 40.2 V standoff. Its low clamping ratio (VC/VWM ≈ 1.38) and fast response time (<1 ns) enable effective protection of downstream MOSFETs and ICs against ESD and inductive switching spikes.
Thermal resistance is rated at RθJA = 100 °C/W (typical, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 40.2 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 44.7–49.4 V at IT = 1 mA - Voltage at which device transitions into avalanche conduction; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 64.8 V at IPPM = 9.3 A - Peak voltage seen by protected circuit during 10/1000 μs surge; directly limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability under standardized 10/1000 μs waveform; enables robust surge handling. |
| Package | SMB (DO-214AA) - Surface-mount package with 5.59 mm × 4.06 mm footprint, optimized for automated placement and thermal dissipation on PCB copper pads. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units, ADAS sensors, and infotainment power rails. |
| Mounting Thermal Condition | Tested on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - establishes baseline thermal performance for layout design. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path (bidirectional) | Either terminal serves as input/output for surge current; no cathode band marking; identical electrical behavior in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy surges such as ISO 7637-2 Pulse 1/2a/5a without derating in standard PCB layouts. |
| AEC-Q101 qualification (HE3 suffix) | Confirms reliability for automotive-grade deployment including temperature cycling, humidity testing, and mechanical shock per automotive standards. |
| Low clamping voltage (64.8 V @ 9.3 A) | Minimizes overvoltage exposure to protected ICs like CAN transceivers or microcontrollers, reducing risk of latch-up or gate oxide damage. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination. |
| Glass passivated junction | Ensures stable leakage current and long-term reliability under humid or high-bias stress conditions typical in industrial enclosures. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle cabins. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal/power pair upstream of interface ICs. Use Value: Maintains signal integrity during 100 V/500 ms load dump transients while limiting voltage to <65 V at the protected IC's pins. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor on input terminal blocks, coordinated with upstream fuses and filtering. Use Value: Absorbs 600 W surges without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 3 compliance. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced surges on twisted-pair cabling in outdoor access points. IC Role / Device Role / Timing Role: Secondary-level TVS on differential data lines, used alongside common-mode chokes and primary GDTs. Use Value: Clamps differential-mode transients to <65 V within <1 ns, preserving signal eye diagram integrity up to 100 Mbps. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Across-motor terminals to clamp flyback voltage during PWM switching and commutation. Use Value: Limits voltage reversal to ≤65 V, preventing MOSFET drain-source breakdown and extending driver IC lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47CA | Same 47 V bidirectional rating but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA ≈ 140 °C/W). | Limited to lower-energy transients (IEC 61000-4-2 ±8 kV contact); unsuitable for ISO 7637-2 Pulse 5a. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with reduced copper area. |
| SMCJ47CA | Higher PPPM (1500 W); larger SMC (DO-214AB) package; same VWM/VC specs but higher IPPM (24.7 A). | Overqualified for cost-sensitive consumer designs; better suited for industrial motor drives with repetitive surges. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 or requires >1000 W headroom. |
Compared with SMAJ47CA and SMCJ47CA, P6SMB47CAHE3/52 delivers optimal balance of 600 W surge capacity, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for automotive and industrial applications requiring validated reliability without over-engineering.
Availability
P6SMB47CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom infrastructure equipment requiring stable component supply, AEC-Q101 traceability, and consistent SMB package logistics.
Supply support for P6SMB47CAHE3/52 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, automotive qualification, and high-volume manufacturability.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust clamping performance, AEC-Q101 compliance, and compatibility with automated SMT assembly processes.
FAQ
What is the clamping voltage of P6SMB47CAHE3/52 and how is it measured?
The clamping voltage (VC) of P6SMB47CAHE3/52 is 64.8 V, measured at a peak pulse current (IPPM) of 9.3 A using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the maximum voltage imposed on the protected circuit during surge conditions and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2, Electrical Characteristics table.
Is P6SMB47CAHE3/52 suitable for automotive applications?
Yes, P6SMB47CAHE3/52 is AEC-Q101 qualified (indicated by the HE3 suffix), with validation across temperature cycling, humidity bias, mechanical shock, and ESD testing per automotive requirements. It is explicitly recommended for engine control units, ADAS sensor interfaces, and body electronics where sustained operation from −65 °C to +150 °C and surge immunity are mandatory.
What does the "CA" suffix mean in P6SMB47CAHE3/52?
The "CA" suffix in P6SMB47CAHE3/52 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with identical VWM, VBR, and VC characteristics across polarity. This eliminates need for orientation-aware placement and supports differential-line protection without polarity concerns.
What is the thermal resistance of P6SMB47CAHE3/52 and how does it affect PCB layout?
P6SMB47CAHE3/52 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. To maintain TJ ≤150 °C under 5.0 W steady-state dissipation, designers must allocate ≥5 mm² of 2-oz copper per pad and avoid thermal isolation - layout directly impacts surge endurance and long-term reliability.
How does P6SMB47CAHE3/52 differ from unidirectional P6SMB47AHE3/52?
P6SMB47CAHE3/52 is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas P6SMB47AHE3/52 is unidirectional - featuring a cathode band, forward voltage drop (~3.5 V at 50 A), and asymmetric behavior (conducts only in reverse). The "CA" version is required for AC-coupled or floating signal lines; the "A" version suits DC power rail protection with defined polarity.
P6SMB47CAHE3/52 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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 (SMB)
P6SMB47CAHE3/52 FAQ
1.How can I place an order for P6SMB47CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CAHE3/52 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 P6SMB47CAHE3/52 reliable?
The price and inventory of P6SMB47CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB47CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CAHE3/52?
P6SMB47CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CAHE3/52 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 P6SMB47CAHE3/52?
For technical support, including P6SMB47CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB47CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB47CAHE3/52 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 P6SMB47CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB47CAHE3/52?
All P6SMB47CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CAHE3/52, 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 P6SMB47CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB47CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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