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Vishay General Semiconductor - Diodes Division P6SMB43CAHE3_A/I
- Part No.:
- P6SMB43CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHE3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,275
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Product details
Overview
P6SMB43CAHE3_A/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 43 V breakdown voltage (VBR min/max = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), and clamps to ≤59.3 V at 10.1 A peak pulse current (10/1000 μs waveform), delivering 600 W peak pulse power for surge protection in automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB43CAHE3_A/I datasheet, P6SMB43CAHE3_A/I pinout, P6SMB43CAHE3_A/I application, or P6SMB43CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and low incremental surge resistance for robust ESD and lightning-induced transient suppression in harsh environments.
Technical Context
The P6SMB43CAHE3_A/I operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics 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 peak pulse power per the standardized 10/1000 μs double-exponential waveform, with derating above 25 °C ambient per Figure 2. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for automotive electronics where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise clamping onset threshold for overvoltage events |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | ≤59.3 V at 10.1 A - clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W - peak surge power handling with 10/1000 μs waveform, duty cycle ≤0.01 % |
| Junction Temp Range | −65 °C to +150 °C - enables deployment in under-hood automotive or industrial control enclosures |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and 0.2" × 0.2" copper pads |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling and humidity testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated. Bidirectional construction means no polarity marking; terminals are symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts avalanche current in either direction when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns |
| 600 W peak pulse power | Withstands high-energy surges such as ISO 7637-2 Pulse 1/2a/5a or IEC 61000-4-5 Level 4 without failure |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes voltage overshoot during transients, reducing risk of latch-up or damage to protected 3.3 V/5 V logic |
| MSL Level 1 rating | Allows unlimited floor life and reflow soldering at peak 260 °C without preconditioning or baking |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential signal pair or supply rail to limit voltage excursions during ESD or surge events. Use Value: Prevents permanent damage to sensitive analog front-ends and digital transceivers by clamping transients to ≤59.3 V while maintaining <1 μA leakage at 36.8 V operating voltage. |
Use Scenario: Safeguarding PLC analog input channels and digital I/O ports against field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff voltage suppressor mounted at connector entry point to shunt transient energy before it reaches isolation barriers or ADCs. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements using a single, AEC-Q101-qualified component. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level transient suppressor placed before common-mode chokes and transformer coupling to absorb common-mode energy. Use Value: Provides 600 W surge handling with fast response (<1 ns) and low clamping voltage, preserving signal integrity on 100BASE-TX and Gigabit links. |
Use Scenario: Secondary-side overvoltage protection on DC outputs of wall adapters used in smart home devices and audio equipment. IC Role / Device Role / Timing Role: Bidirectional clamp across regulated 5 V/12 V output to prevent damage from reverse-polarity connection or regulator fault. Use Value: Ensures fail-safe operation with no polarity dependency and maintains <1 μA leakage at nominal output voltage, avoiding standby power penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VBR range (40.9–45.2 V) and SMB package, but rated for 400 W PPPM, not AEC-Q101 qualified | Limited to commercial-grade industrial or consumer use; lacks automotive reliability validation | Select when cost sensitivity outweighs automotive qualification requirements and 400 W surge margin suffices |
| 1.5KE43CA | Through-hole DO-201 package, same 43 V bidirectional rating, 600 W PPPM, but no AEC-Q101 qualification | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated production | Choose only for legacy through-hole designs or prototyping where board space and assembly method permit larger footprint |
Compared with SMAJ43CA and 1.5KE43CA, the P6SMB43CAHE3_A/I uniquely combines 600 W surge capability, SMB surface-mount compatibility, and AEC-Q101 qualification-making it the only option among the three validated for automotive serial production without layout or reliability trade-offs.
Availability
P6SMB43CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB43CAHE3_A/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 high-reliability and automotive-grade solutions.
The P6SMB Series is engineered for robust transient suppression in demanding environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB43CAHE3_A/I?
The "CA" suffix denotes that the P6SMB43CAHE3_A/I is a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P6SMB43A), this device provides symmetrical clamping in both polarities-ideal for protecting AC-coupled signals, differential buses, or floating power rails without requiring polarity-aware placement on the PCB.
Is P6SMB43CAHE3_A/I suitable for automotive applications?
Yes, the P6SMB43CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock-making P6SMB43CAHE3_A/I appropriate for engine control units, ADAS sensors, and body electronics in production vehicles.
What is the maximum clamping voltage of P6SMB43CAHE3_A/I under surge conditions?
The P6SMB43CAHE3_A/I clamps to a maximum of 59.3 V at its rated peak pulse current of 10.1 A (10/1000 μs waveform). This value is measured per standard test conditions and represents the upper bound of voltage seen by downstream circuitry during a full 600 W transient event, ensuring safe operation for 3.3 V, 5 V, and 12 V logic interfaces.
Does P6SMB43CAHE3_A/I require polarity-specific PCB layout?
No-P6SMB43CAHE3_A/I is a bidirectional TVS diode with no cathode marking or polarity designation. Its symmetrical construction allows placement in either orientation across protected lines, simplifying layout and eliminating risk of misorientation during automated assembly. This contrasts with unidirectional variants like P6SMB43A, which require correct anode/cathode alignment.
What thermal derating applies to P6SMB43CAHE3_A/I above 25 °C ambient?
The P6SMB43CAHE3_A/I must be derated linearly above 25 °C ambient per Figure 2 in the Vishay datasheet (Document Number: 88370). Its peak pulse power drops from 600 W at 25 °C to zero at 150 °C junction temperature, with a typical thermal resistance of 100 °C/W junction-to-ambient-requiring adherence to the recommended 0.2" × 0.2" copper pad layout for specified performance.
P6SMB43CAHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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)
P6SMB43CAHE3_A/I FAQ
1.How can I place an order for P6SMB43CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHE3_A/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 P6SMB43CAHE3_A/I reliable?
The price and inventory of P6SMB43CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHE3_A/I?
P6SMB43CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHE3_A/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 P6SMB43CAHE3_A/I?
For technical support, including P6SMB43CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB43CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHE3_A/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 P6SMB43CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHE3_A/I?
All P6SMB43CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHE3_A/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 P6SMB43CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB43CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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