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Vishay General Semiconductor - Diodes Division P6SMB47CA-E3/5B
- Part No.:
- P6SMB47CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CA-E3/5B.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
P6SMB47CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 40.2 V stand-off voltage (VWM), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB47CA-E3/5B datasheet, P6SMB47CA-E3/5B pinout, P6SMB47CA-E3/5B application, or P6SMB47CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMB package thermal and mechanical data, AEC-Q101 qualification status, and real-world protection use cases for surge-prone signal paths.
Technical Context
The P6SMB47CA-E3/5B operates as a symmetrical, bidirectional avalanche diode - conducting in both polarities once reverse or forward voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad conditions.
It delivers 600 W transient suppression capability per 10/1000 µs waveform at 0.01% duty cycle, with fast response time (<1.0 ns) and low incremental surge resistance - enabling effective protection against ESD, lightning-induced surges, and inductive switching transients without affecting normal signal integrity in bidirectional data or power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 64.8 V at 9.3 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 600 W - Sustained transient energy absorption capacity; validated per IEC 61000-4-5 surge standard waveforms. |
| IPPM | 9.3 A - Peak surge current handled at VC; determines minimum trace width and PCB copper area needed for reliable dissipation. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.205" × 0.220" footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow). Bidirectional construction has no polarity marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles in bidirectional clamping; no cathode band marking required - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without derating on standard 0.2" × 0.2" copper pads. |
| Bidirectional symmetry | Eliminates need for polarity-aware routing on AC-coupled or differential signal lines (e.g., RS-485, CAN, USB D+/D−). |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime - critical for battery-powered sensor nodes. |
| AEC-Q101 qualified variant available | P6SMB47CA-E3/5B itself is commercial-grade; HE3/HM3 suffix versions meet automotive reliability requirements for engine control and ADAS subsystems. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping - preserves timing margins and logic thresholds in high-speed digital interfaces. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from 24 V DC solenoids and BLDC motor controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed across isolated analog inputs and PWM gate drive outputs to clamp ±100 V transients. Use Value: Prevents latch-up and permanent damage to op-amps and half-bridge drivers during load dump or relay coil de-energization. |
Use Scenario: Shielding LIN bus and analog pressure/temperature sensor outputs in engine bay modules exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-clamp device on bidirectional LIN data line and unidirectional sensor supply rail. Use Value: Maintains signal fidelity under 100 V/50 ms load dump events while adding <0.5 pF parasitic capacitance to preserve 20 kbps LIN timing. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
|
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against lightning-induced common-mode surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary clamping element on each DC input pair, coordinated with GDT and series impedance. Use Value: Limits surge voltage to <65 V during 10/1000 µs events - within safe operating range of 75 V-rated DC-DC converters. |
Use Scenario: Secondary-level transient suppression on USB-C CC and VCONN lines after primary ESD array. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp handling slow surges (e.g., hot-swap inrush, cable coupling) not covered by ESD diodes. Use Value: Adds 600 W surge margin without compromising USB-C 10 Gbps signal integrity due to sub-1 pF junction capacitance at zero bias. |
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 SMB package, 40 V VWM, but lower 400 W PPPM rating and higher VC (69.4 V at 5.8 A); ±5% VBR tolerance. | Limited to lower-energy transients (IEC 61000-4-5 Level 3); less margin for sustained 24 V industrial surges. | Select when cost sensitivity outweighs peak surge headroom - verify clamping voltage compatibility with protected IC absolute maximum ratings. |
| 1.5SMC47CA | Higher-power SMC package (same VWM/VBR), 1500 W PPPM, 64.8 V VC at 23.3 A; larger 0.305" × 0.250" footprint. | Required where system-level surge tests exceed 600 W - e.g., outdoor telecom enclosures or railway power supplies. | Choose only if PCB space allows SMC and thermal design accommodates higher IPPM; otherwise P6SMB47CA-E3/5B offers optimal density/performance balance. |
Compared with SMAJ47CA and 1.5SMC47CA, the P6SMB47CA-E3/5B delivers the highest power density among SMB-form-factor bidirectional TVS diodes - enabling compact, cost-effective protection for 24–48 V systems without sacrificing clamping performance or thermal robustness.
Availability
P6SMB47CA-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer USB-C port protection requiring stable component supply and RoHS-compliant manufacturing.
Supply support for P6SMB47CA-E3/5B 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification matter.
FAQ
What does the "CA" suffix mean in P6SMB47CA-E3/5B?
The "CA" suffix in P6SMB47CA-E3/5B indicates a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., P6SMB47A), it has no cathode marking and is used where AC signals, differential buses, or undefined polarity lines require symmetrical protection without orientation constraints.
Is P6SMB47CA-E3/5B AEC-Q101 qualified?
No, P6SMB47CA-E3/5B is the commercial-grade version with RoHS compliance. AEC-Q101 qualification is available in the HE3 and HM3 variants (e.g., P6SMB47CAHE3_B), which include additional stress testing for automotive under-hood use. For non-automotive industrial or telecom designs, P6SMB47CA-E3/5B meets all standard reliability requirements.
What is the maximum clamping voltage of P6SMB47CA-E3/5B and at what current is it specified?
The maximum clamping voltage of P6SMB47CA-E3/5B is 64.8 V, measured at a peak pulse current (IPPM) of 9.3 A using the standardized 10/1000 µs double-exponential waveform. This value defines the worst-case voltage imposed on protected circuitry during a surge event and must be compared directly to the absolute maximum ratings of downstream ICs.
Can P6SMB47CA-E3/5B be used in place of a unidirectional TVS like P6SMB47A?
P6SMB47CA-E3/5B can replace P6SMB47A only in circuits where bidirectional clamping is acceptable and required - such as AC-coupled lines or differential pairs. In unidirectional DC rails (e.g., 5 V supply), using the CA variant introduces unnecessary conduction during forward-biased transients and may reduce noise immunity; always verify polarity alignment and system-level surge directionality before substitution.
What PCB pad layout is recommended for optimal thermal performance of P6SMB47CA-E3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P6SMB47CA-E3/5B to achieve rated 600 W pulse power and maintain junction temperature within limits. Use internal ground/power planes connected via multiple thermal vias under each pad to enhance heat spreading - especially critical in enclosed or high-ambient-temperature deployments.
P6SMB47CA-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB47CA-E3/5B FAQ
1.How can I place an order for P6SMB47CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CA-E3/5B 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 P6SMB47CA-E3/5B reliable?
The price and inventory of P6SMB47CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB47CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CA-E3/5B?
P6SMB47CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CA-E3/5B 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 P6SMB47CA-E3/5B?
For technical support, including P6SMB47CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB47CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB47CA-E3/5B 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 P6SMB47CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB47CA-E3/5B?
All P6SMB47CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CA-E3/5B, 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 P6SMB47CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB47CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47CA-E3/5B Tags
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Diodes Incorporated
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