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Vishay General Semiconductor - Diodes Division P6SMB47CAHM3/H
- Part No.:
- P6SMB47CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CAHM3/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB47CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal 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 (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB47CAHM3/H datasheet, P6SMB47CAHM3/H pinout, P6SMB47CAHM3/H application, or P6SMB47CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
The P6SMB47CAHM3/H operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR = 44.7–49.4 V), it avalanches to divert surge current away from downstream circuitry while maintaining VC ≤ 64.8 V. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
Designed for high-reliability environments, it meets AEC-Q101 qualification (automotive grade), MSL Level 1 per J-STD-020, and halogen-free RoHS compliance (HM3 suffix). Thermal resistance is RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C with derating above TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 40.2 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 44.7–49.4 V at IT = 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on under transient stress. |
| VC (Clamping Voltage) | 64.8 V at IPPM = 9.3 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for IC survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability per single 10/1000 μs transient; enables protection against IEC 61000-4-5 Level 3 surges. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive or industrial ambient environments without thermal shutdown. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal interface per terminal. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; accepts surge current in either direction during overvoltage events. |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or rail during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and JESD201 Class 2 whisker resistance, enabling use in consumer, industrial, and medical electronics. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV line-to-ground (2 Ω source impedance) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage in MOSFETs and microcontrollers. |
| MSL Level 1 (260 °C peak reflow) | Enables standard lead-free SMT assembly without moisture-related popcorning or delamination risks. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed directly at connector entry point to limit transient voltage before reaching signal conditioning circuitry. Use Value: Prevents permanent damage to 5 V/3.3 V analog front-ends and digital receivers during ISO 7637-2 pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel, clamping transients within 1 ns to maintain signal integrity during fast-switching events. Use Value: Ensures >100,000 actuation cycles without degradation, meeting IEC 61000-4-4 electrical fast transient (EFT) immunity requirements. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair cabling in outdoor access points. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs, coordinated with common-mode chokes to suppress both differential and common-mode transients. Use Value: Maintains <10 pF junction capacitance (per datasheet Fig. 4) to avoid signal distortion at 100BASE-TX speeds while delivering 600 W surge handling. |
Use Scenario: Secondary-side overvoltage suppression on 5 V/9 V USB-C PD adapter outputs exposed to accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Final-stage clamp between VOUT and GND, activated only during fault conditions to prevent downstream device damage. Use Value: Limits output voltage excursion to ≤64.8 V during 10/1000 μs surges, protecting connected smartphones and tablets compliant with USB IF specifications. |
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 VWM (40.2 V) and VC (64.8 V), but lower PPPM (400 W) and non-AEC-Q101 rated; SMA package (smaller thermal mass). | Limited to commercial-grade consumer or office equipment where automotive qualification and 600 W surge margin are not required. | Select when cost sensitivity outweighs automotive reliability needs and PCB space constraints favor smaller footprint. |
| SMCJ47CA | Higher PPPM (1500 W), same VWM/VC, but larger SMC (DO-214AB) package; AEC-Q101 available in HM3 variant (SMCJ47CAHM3). | Suitable for higher-energy threats (e.g., 4 kV IEC 61000-4-5) in motor drives or solar inverters where board space permits larger package. | Choose when system-level surge testing exceeds 600 W capability and thermal design supports SMC's higher RθJA (65 °C/W). |
Compared with SMAJ47CA and SMCJ47CA, the P6SMB47CAHM3/H delivers optimal balance of automotive qualification, 600 W surge rating, and SMB footprint - making it ideal for space-constrained, thermally managed designs requiring AEC-Q101 compliance without overspec'ing package size or cost.
Availability
P6SMB47CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB47CAHM3/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, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-volume, high-reliability transient suppression across automotive, industrial, and communications systems - engineered for rapid response, low clamping, and seamless integration into automated SMT assembly lines.
FAQ
What is the breakdown voltage range of the P6SMB47CAHM3/H?
The P6SMB47CAHM3/H has a specified breakdown voltage (VBR) range of 44.7 V to 49.4 V at test current IT = 1.0 mA. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The value is measured under standardized conditions per ANSI/IEEE C62.35 and is critical for verifying compatibility with protected circuit voltage rails. P6SMB47CAHM3/H data is confirmed in Vishay Document Number 88370, Revision 09-Jan-2024.
Is the P6SMB47CAHM3/H suitable for automotive applications?
Yes, the P6SMB47CAHM3/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 temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating suitability for under-hood and cabin electronics. P6SMB47CAHM3/H meets automotive-grade reliability requirements without derating in ambient temperatures up to +125 °C.
What does the "CA" suffix mean in P6SMB47CAHM3/H?
The "CA" suffix in P6SMB47CAHM3/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB47AHM3/H), it has no cathode marking and functions identically regardless of polarity - essential for AC-coupled lines or differential signaling. This is explicitly defined in the Vishay P6SMB series datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
What is the maximum clamping voltage of the P6SMB47CAHM3/H at rated peak pulse current?
The P6SMB47CAHM3/H exhibits a maximum clamping voltage (VC) of 64.8 V at peak pulse current (IPPM) = 9.3 A, tested with a 10/1000 μs waveform. This value represents the worst-case voltage imposed on protected circuitry during surge events and is guaranteed across temperature and lot variations. It directly determines whether downstream components (e.g., 5 V logic ICs) remain within absolute maximum ratings. P6SMB47CAHM3/H VC is verified per Figure 1 and Table on page 2 of Document 88370.
Does the P6SMB47CAHM3/H require a heatsink for standard operation?
No, the P6SMB47CAHM3/H is designed for operation without an external heatsink under typical conditions: it uses the PCB copper pads (0.2" × 0.2", 5.0 mm × 5.0 mm per terminal) as its primary thermal path. Its RθJA = 100 °C/W and RθJL = 20 °C/W allow safe dissipation of 5.0 W continuous power at TA = 50 °C. For repetitive surge duty cycles or elevated ambient temperatures, layout optimization - not added heatsinking - is the recommended thermal strategy. P6SMB47CAHM3/H thermal data is specified in the "THERMAL CHARACTERISTICS" table on page 3.
P6SMB47CAHM3/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:
- 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:
- 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)
P6SMB47CAHM3/H FAQ
1.How can I place an order for P6SMB47CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CAHM3/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 P6SMB47CAHM3/H reliable?
The price and inventory of P6SMB47CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB47CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CAHM3/H?
P6SMB47CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CAHM3/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 P6SMB47CAHM3/H?
For technical support, including P6SMB47CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CAHM3/H requirements.
6.How does Aetrix verify that P6SMB47CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB47CAHM3/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 P6SMB47CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB47CAHM3/H?
All P6SMB47CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CAHM3/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 P6SMB47CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB47CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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