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Vishay General Semiconductor - Diodes Division P6SMB47CAHE3_B/H
- Part No.:
- P6SMB47CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CAHE3_B/H.pdf
- Description:
- 600W,47V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,130
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Product details
Overview
P6SMB47CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 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 (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB47CAHE3_B/H datasheet, P6SMB47CAHE3_B/H pinout, P6SMB47CAHE3_B/H application, or P6SMB47CAHE3_B/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, 150 °C max junction temperature, low 1.0 μA reverse leakage at VWM, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding its breakdown threshold (VBR = 44.7–49.4 V), it avalanches to divert surge current away from downstream circuitry while maintaining clamped voltage ≤64.8 V. Its bidirectional structure enables symmetrical protection on AC-coupled or floating lines without polarity constraints.
Designed for high-reliability environments, P6SMB47CAHE3_B/H features glass-passivated junctions, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and is qualified to AEC-Q101 for automotive applications. Thermal resistance is RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting operation up to 150 °C junction temperature under defined PCB copper pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 44.7–49.4 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 64.8 V at 9.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| IPPM | 9.3 A - Maximum non-repetitive surge current the device can safely clamp; sized for common IEC 61000-4-5 Level 3/4 threats. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against 10/1000 μs transients at 0.01% duty cycle. |
| TJ max | 150 °C - Maximum allowable junction temperature; sets thermal derating limits for sustained power dissipation. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; guides PCB thermal design. |
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 | Current entry point during positive transient | One terminal of symmetrical PN junction; conducts when voltage exceeds +VBR relative to cathode. |
| Cathode | Current entry point during negative transient | Second terminal of symmetrical PN junction; conducts when voltage exceeds –VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal paths without polarity concerns-no cathode band marking required. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing per JEDEC standards. |
| 600 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 1 kV line-to-line (2 kV line-to-earth) with appropriate series impedance. |
| Low 1.0 μA reverse leakage at VWM | Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile use (peak 260 °C) without baking preconditioning. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to clamp transients before they reach signal conditioning ICs. Use Value: Maintains signal integrity under 12 V/24 V system surges up to ±100 V, leveraging bidirectional symmetry and AEC-Q101 qualification. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-wiring induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Limits clamped voltage to ≤64.8 V, preventing damage to precision op-amps and ADCs while adding <1 pF junction capacitance. |
| Telecom Line Interface | Consumer USB/UART Protection |
|
Use Scenario: Shielding RS-485/RS-422 differential data lines in base station equipment and network switches from lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to common-mode ground, absorbing common- and differential-mode energy. Use Value: Withstands repetitive 600 W pulses and maintains low clamping ratio (VC/VBR ≈ 1.4), preserving signal eye diagram integrity. |
Use Scenario: ESD and surge protection for USB 2.0 D+/D− lines and UART TX/RX pins in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt suppressor placed adjacent to connector, grounded via shortest possible trace. Use Value: Provides IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) immunity without degrading signal rise time due to minimal parasitic capacitance. |
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 VWM, but lower 400 W PPPM; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less suitable for IEC 61000-4-5; preferred where board space is constrained. | Select SMAJ47CA only if surge threat level is ≤400 W and PCB layout cannot accommodate SMB's larger pad area. |
| SMCJ47CA | Same 47 V VWM, higher 1500 W PPPM; SMC package (larger, lower RθJA = 50 °C/W). | Overqualified for 600 W needs; adds cost and board area; better for harsher environments (e.g., railway, heavy industrial). | Choose SMCJ47CA when future-proofing against higher surge levels or when thermal management is critical under sustained ambient >85 °C. |
Compared with SMAJ47CA and SMCJ47CA, P6SMB47CAHE3_B/H delivers optimal balance of 600 W surge rating, AEC-Q101 compliance, and SMB footprint-making it the preferred choice for automotive and industrial designs requiring validated reliability without over-engineering.
Availability
P6SMB47CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line interface circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified parts.
Supply support for P6SMB47CAHE3_B/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-designed for robust SMT manufacturability and consistent clamping performance under real-world surge conditions.
FAQ
What is the exact breakdown voltage range for P6SMB47CAHE3_B/H?
The breakdown voltage (VBR) for P6SMB47CAHE3_B/H is specified as 44.7 V to 49.4 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range reflects manufacturing tolerance and ensures reliable avalanche initiation during overvoltage events while maintaining margin above the 40.2 V stand-off voltage. The full specification is confirmed in Vishay document 88370, page 2.
Is P6SMB47CAHE3_B/H suitable for automotive applications?
Yes, P6SMB47CAHE3_B/H is AEC-Q101 qualified, as indicated by the "HE3" and "_B" suffixes in the part number. It undergoes rigorous stress testing-including temperature cycling, high-temperature operating life, and ESD-to meet automotive electronic module requirements. Its 150 °C max junction temperature and MSL Level 1 rating further support under-hood and infotainment system deployment.
What does the "CA" suffix mean in P6SMB47CAHE3_B/H?
The "CA" suffix in P6SMB47CAHE3_B/H denotes a bidirectional configuration. Unlike unidirectional variants (e.g., P6SMB47A), this device provides symmetrical clamping for both polarities-ideal for protecting AC-coupled signals, differential buses (e.g., RS-485), or floating nodes where voltage reversals occur. No cathode band marking is present, confirming its bidirectional nature.
What is the maximum clamping voltage of P6SMB47CAHE3_B/H at rated surge current?
The maximum clamping voltage (VC) of P6SMB47CAHE3_B/H is 64.8 V at 9.3 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across temperature and represents the highest voltage the protected circuit will experience during a worst-case transient, directly informing downstream component voltage ratings.
How does the SMB (DO-214AA) package of P6SMB47CAHE3_B/H affect thermal performance?
The SMB (DO-214AA) package of P6SMB47CAHE3_B/H delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. This enables reliable operation up to 150 °C junction temperature under pulsed conditions, though continuous power dissipation must remain below 5.0 W (PD) to avoid thermal runaway.
P6SMB47CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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)
P6SMB47CAHE3_B/H FAQ
1.How can I place an order for P6SMB47CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CAHE3_B/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 P6SMB47CAHE3_B/H reliable?
The price and inventory of P6SMB47CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB47CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CAHE3_B/H?
P6SMB47CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CAHE3_B/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 P6SMB47CAHE3_B/H?
For technical support, including P6SMB47CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB47CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB47CAHE3_B/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 P6SMB47CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB47CAHE3_B/H?
All P6SMB47CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CAHE3_B/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 P6SMB47CAHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB47CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47CAHE3_B/H Tags
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