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Vishay General Semiconductor - Diodes Division P6SMB47CAHM3_B/I
- Part No.:
- P6SMB47CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CAHM3_B/I.pdf
- Description:
- 600W,47V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,497
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Product details
Overview
P6SMB47CAHM3_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 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage at 9.3 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 for protecting automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the P6SMB47CAHM3_B/I datasheet, P6SMB47CAHM3_B/I pinout, P6SMB47CAHM3_B/I application, or P6SMB47CAHM3_B/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, SMB (DO-214AA) package thermal resistance (RθJA = 100 °C/W), and compliance with automotive-grade reliability requirements under repetitive surge conditions.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 40.2 V), while the 10/1000 μs surge rating reflects real-world lightning and inductive-switching transient immunity.
The device is rated for -65 °C to +150 °C operating junction temperature, with thermal resistance from junction to ambient (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads. It meets JESD201 Class 2 whisker resistance and MSL Level 1 per J-STD-020, supporting lead-free reflow up to 260 °C peak.
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 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 64.8 V at 9.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for IC-level stress limits. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized transient waveform; validates robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | <1.0 μA at VWM - Minimal standby current; preserves signal integrity and battery life in always-on systems. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically regardless of orientation in circuit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; enables placement flexibility on PCB without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces requiring zero-failure reliability. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and supports lead-free manufacturing without compromising surge performance. |
| 600 W 10/1000 μs peak pulse rating | Withstands repeated lightning-induced surges per IEC 61000-4-5 Level 3 (1 kV line-to-ground) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream ICs-critical for protecting 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow processing without baking, reducing production overhead. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ESD events in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt transient energy to ground. Use Value: Maintains signal integrity during 12 V system load dump (ISO 7637-2 Pulse 5a) with clamping voltage below transceiver absolute maximum ratings. |
Use Scenario: Safeguarding PLC analog input channels (4–20 mA, 0–10 V) against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on terminal block inputs, coordinated with upstream fusing and filtering. Use Value: Limits transient voltage to ≤64.8 V during 1 kV/500 A surge, preventing damage to precision ADC front-ends and op-amp buffers. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from induced surges on outdoor cabling in security camera systems. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy post-GDT conduction. Use Value: Fast response (<1 ns) ensures clamping occurs before GDT arc stabilization, reducing let-through voltage to <65 V. |
Use Scenario: Guarding USB 2.0 data lines (D+/D−) and VBUS against ESD and hot-plug transients in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, referenced to ground. Use Value: Junction capacitance <100 pF (typ.) avoids signal distortion at 480 Mbps; clamps ±15 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47CA | Same 47 V VWM and bidirectional configuration, but lower 400 W PPPM rating and SMA package (higher RθJA). | Limited to lower-energy transients; unsuitable for automotive load dump where 600 W rating is required. | Select P6SMB47CAHM3_B/I when higher surge endurance and AEC-Q101 qualification are mandatory. |
| SMCJ47CA | Higher 1500 W PPPM rating and same SMB package, but larger footprint (DO-214AB) and non-AEC-Q101 commercial grade (M3 suffix only). | Better for industrial surge immunity, but lacks automotive qualification and has longer lead time for HM3 variants. | Choose P6SMB47CAHM3_B/I for space-constrained automotive designs needing guaranteed AEC-Q101 compliance. |
Compared with SMAJ47CA and SMCJ47CA, P6SMB47CAHM3_B/I uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB footprint, and halogen-free construction-making it optimal for next-generation automotive ECUs and industrial edge controllers where reliability, size, and regulatory compliance are jointly constrained.
Availability
P6SMB47CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P6SMB47CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping behavior and long-term stability under surge stress are essential.
FAQ
What does the "CA" suffix indicate in P6SMB47CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration-meaning the P6SMB47CAHM3_B/I provides symmetrical clamping in both polarities, making it ideal for protecting AC signals, differential buses like CAN or RS-485, and ungrounded power rails. Unlike unidirectional variants (e.g., P6SMB47A), it requires no polarity alignment during placement.
Is P6SMB47CAHM3_B/I suitable for automotive under-hood applications?
Yes. P6SMB47CAHM3_B/I is AEC-Q101 qualified, rated for TJ = -65 °C to +150 °C, and built with halogen-free, RoHS-compliant materials. Its 600 W surge rating and low clamping voltage ensure reliable protection of engine control units, battery management sensors, and radar modules exposed to load dump and ISO 7637-2 pulses.
How does the SMB (DO-214AA) package of P6SMB47CAHM3_B/I compare thermally to SMA or SMC packages?
The SMB package of P6SMB47CAHM3_B/I offers RθJA = 100 °C/W on standard 0.2" × 0.2" copper pads-better than SMA (RθJA ≈ 140 °C/W) but higher than SMC (RθJA ≈ 50 °C/W). This makes P6SMB47CAHM3_B/I well-suited for moderate-power surge handling in space-constrained layouts where SMC's larger footprint is impractical.
What is the maximum reverse leakage current for P6SMB47CAHM3_B/I at its VWM?
The maximum reverse leakage current for P6SMB47CAHM3_B/I is 1.0 μA at 40.2 V (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor circuits and minimizes standby power loss in battery-powered automotive modules using the P6SMB47CAHM3_B/I.
Does P6SMB47CAHM3_B/I require special handling or baking before reflow soldering?
No. P6SMB47CAHM3_B/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be subjected to standard lead-free reflow profiles (peak 260 °C) without prior baking. Its moisture-resistant molding compound eliminates production delays associated with humidity-sensitive components.
P6SMB47CAHM3_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):
- 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_B/I FAQ
1.How can I place an order for P6SMB47CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CAHM3_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 P6SMB47CAHM3_B/I reliable?
The price and inventory of P6SMB47CAHM3_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 P6SMB47CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB47CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CAHM3_B/I?
P6SMB47CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CAHM3_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 P6SMB47CAHM3_B/I?
For technical support, including P6SMB47CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB47CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB47CAHM3_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 P6SMB47CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB47CAHM3_B/I?
All P6SMB47CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CAHM3_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 P6SMB47CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB47CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47CAHM3_B/I Tags
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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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