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Vishay General Semiconductor - Diodes Division P6SMB43CAHE3_B/I
- Part No.:
- P6SMB43CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHE3_B/I.pdf
- Description:
- 600W,43V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,095
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Product details
Overview
P6SMB43CAHE3_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 43 V standoff voltage (VWM), 47.9–52.7 V breakdown voltage (VBR) at 1 mA, 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the P6SMB43CAHE3_B/I datasheet, P6SMB43CAHE3_B/I pinout, P6SMB43CAHE3_B/I application, or P6SMB43CAHE3_B/I equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, SMB (DO-214AA) package dimensions, clamping performance under standardized surge conditions, and direct alternatives for design-in validation and supply continuity planning.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response time (<1 ns), while the low incremental surge resistance supports robust energy absorption without thermal runaway.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its AEC-Q101 qualification (indicated by HE3 suffix and _B revision) confirms suitability for automotive-grade applications including engine control modules and ADAS sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36.8 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.9–45.2 V at 1 mA - Confirmed voltage range where device transitions from high-impedance to low-impedance state; ensures predictable turn-on during surges. |
| VC (Clamping Voltage) | 59.3 V at 10.1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity under standardized 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | <1 μA at 36.8 V - Minimal standby current ensures no loading of sensitive analog or low-power circuits during normal operation. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability per stress test requirements including HTOL, TC, HAST, and ESD; indicated by HE3 and _B suffixes. |
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); cathode band absent per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically under reverse or forward surge; no DC polarity dependency - simplifies PCB layout for AC-coupled or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge (open-circuit) or 2 kV line-to-ground events when mounted per recommended 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 qualified (HE3_B) | Validated for automotive electronics including body control modules, infotainment interfaces, and sensor signal conditioning circuits. |
| MSL Level 1, 260 °C reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling requirements. |
| Glass-passivated junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and lifetime stress conditions. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ±50 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to MCU GPIOs and analog front-ends while maintaining <1 μA leakage at 36.8 V operating voltage. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) against EFT and surge events in factory automation networks. IC Role / Device Role / Timing Role: Placed across differential pair (A/B) and ground to suppress common-mode and differential-mode transients simultaneously. Use Value: Maintains signal integrity up to 20 Mbps by limiting clamping voltage to 59.3 V, well below transceiver absolute maximum ratings. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Control |
|
Use Scenario: Shielding DSL/VDSL line drivers and POTS interface ICs from lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: First-stage protection device located at connector entry point, preceding gas discharge tube or MOV secondary protection. Use Value: Responds in <1 ns to limit let-through energy to <10 mJ, reducing stress on downstream polymeric varistors and enabling compact front-end designs. |
Use Scenario: Guarding microcontroller I/O pins and gate drivers in washing machine motor control boards against commutation spikes from BLDC motors. IC Role / Device Role / Timing Role: Mounted directly at motor driver IC inputs to suppress 100 V/μs edge-induced transients generated during PWM switching. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, ensuring reliability over 10,000+ motor start-stop cycles without parameter drift. |
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 43 V VWM and bidirectional configuration, but lower 400 W PPPM rating and SMA package (smaller thermal mass). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for IEC 61000-4-5 surge testing. | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE43CA | Higher 1500 W PPPM, axial-leaded DO-201 package; larger footprint and manual assembly requirement. | Better suited for primary-level AC mains protection or high-energy industrial drive systems where PCB real estate is less critical. | Choose when higher surge margin is required and through-hole assembly or heatsinking capability is available. |
Compared with SMAJ43CA and 1.5KE43CA, P6SMB43CAHE3_B/I delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB surface-mount compatibility - making it the preferred choice for automotive and industrial SMT designs requiring validated reliability and standardized reflow compatibility.
Availability
P6SMB43CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, and telecom line protection requiring stable component supply, full traceability, and lifecycle continuity assurance.
Supply support for P6SMB43CAHE3_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, efficiency, and application-specific optimization.
The P6SMB series was engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - combining AEC-Q101 qualification, robust 600 W surge handling, and industry-standard SMB packaging for automated manufacturing.
FAQ
What does the "CA" suffix mean in P6SMB43CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB43CAHE3_B/I provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB43A), it has no polarity marking and functions identically regardless of applied voltage polarity, making it ideal for AC-coupled or differential signal lines where directionality is undefined.
Is P6SMB43CAHE3_B/I AEC-Q101 qualified?
Yes, P6SMB43CAHE3_B/I is AEC-Q101 qualified. The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification, and the "_B" revision code confirms compliance with the automotive-grade version of the P6SMB series. This qualification covers stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge - validating its use in automotive ECUs and ADAS subsystems.
What is the clamping voltage of P6SMB43CAHE3_B/I at rated surge current?
The maximum clamping voltage (VC) of P6SMB43CAHE3_B/I is 59.3 V at 10.1 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value represents the highest voltage the protected circuit will experience during a full-rated surge event, and is critical for ensuring compatibility with downstream ICs rated for ≤60 V absolute maximum input voltage.
Can P6SMB43CAHE3_B/I replace P6SMB43A in an existing design?
No - P6SMB43CAHE3_B/I cannot directly replace unidirectional P6SMB43A without circuit review. While both share the same VWM (36.8 V) and VC (59.3 V), P6SMB43A conducts only in reverse bias and requires correct cathode orientation, whereas P6SMB43CAHE3_B/I is bidirectional with no polarity marking. Substitution may cause unintended conduction paths in DC-biased circuits.
What is the thermal resistance of P6SMB43CAHE3_B/I?
The typical junction-to-ambient thermal resistance (RθJA) of P6SMB43CAHE3_B/I is 100 °C/W when mounted on minimum recommended pad layout (0.2" × 0.2" copper pads). Its junction-to-lead resistance (RθJL) is 20 °C/W, supporting effective heat transfer to PCB copper during repetitive surge events - essential for maintaining reliability in thermally constrained automotive and industrial enclosures.
P6SMB43CAHE3_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):
- 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:
- 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)
P6SMB43CAHE3_B/I FAQ
1.How can I place an order for P6SMB43CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHE3_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 P6SMB43CAHE3_B/I reliable?
The price and inventory of P6SMB43CAHE3_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 P6SMB43CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHE3_B/I?
P6SMB43CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHE3_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 P6SMB43CAHE3_B/I?
For technical support, including P6SMB43CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB43CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHE3_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 P6SMB43CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHE3_B/I?
All P6SMB43CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHE3_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 P6SMB43CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB43CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHE3_B/I Tags
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