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Vishay General Semiconductor - Diodes Division P6SMB43CAHE3_B/H
- Part No.:
- P6SMB43CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHE3_B/H.pdf
- Description:
- 600W,43V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,327
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Product details
Overview
P6SMB43CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 43 V breakdown voltage (VBR min/max = 40.9–45.2 V at 1.0 mA), 36.8 V stand-off voltage (VWM), and 59.3 V clamping voltage (VC) at 10.1 A peak pulse current - designed to protect automotive-grade signal lines and power rails against ESD and lightning-induced transients.
For engineers reviewing the P6SMB43CAHE3_B/H datasheet, P6SMB43CAHE3_B/H pinout, P6SMB43CAHE3_B/H application, or P6SMB43CAHE3_B/H equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, 600 W peak pulse power (10/1000 µs), low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for robust protection in automotive sensor interfaces and industrial I/O modules.
Technical Context
This device operates as a bidirectional voltage-clamping protector: it conducts symmetrically in both polarities above its breakdown threshold, delivering consistent transient suppression without polarity dependency. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while the SMB package enables automated placement on high-density PCBs.
Thermally, it features RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The AEC-Q101 qualification (denoted by HE3_B suffix) confirms reliability under automotive temperature cycling, humidity, and mechanical stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min–max) | 40.9–45.2 V at 1.0 mA test current - defines precise conduction onset for bidirectional overvoltage events |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 59.3 V at 10.1 A - clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy handling capacity per industry standard |
| TJ max | +150 °C - junction temperature limit enabling use in under-hood automotive environments |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint with matte tin leads, J-STD-002 solderable |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (temperature, humidity, vibration) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | Either terminal serves as anode or cathode depending on transient polarity - no orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V/24 V automotive buses |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn cracking or delamination |
| Glass passivated junction | Ensures <1.0 µA leakage at VWM and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs in door module ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes before they reach the transceiver's input pins. Use Value: Maintains signal integrity below 59.3 V clamp during 10.1 A surges, preventing latch-up or permanent damage to 5 V tolerant PHYs. | Use Scenario: Safeguarding RS-485/CAN FD data lines in factory automation PLCs subject to EFT and surge noise. IC Role / Device Role / Timing Role: Fast-response voltage limiter placed across differential bus lines (CAN_H/CAN_L). Use Value: Limits common-mode transients to ≤59.3 V within <1 ns, preserving bit error rate under 10/1000 µs 1 kV surges. |
| Consumer Power Adapter Input | Telecom PoE Port Protection |
Use Scenario: Secondary-side overvoltage protection on 12 V/24 V DC outputs of wall adapters used in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated suppressor absorbing induced switching transients from nearby relay loads. Use Value: Blocks >36.8 V spikes while drawing <1.0 µA at nominal output, eliminating standby power penalty. | Use Scenario: Primary-side transient protection on 48 V PoE (IEEE 802.3af/at) injector ports exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp shunting surge energy away from Ethernet magnetics and PHY ICs. Use Value: Handles 600 W peak pulses without degradation, maintaining 36.8 V hold-off during normal 48 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VBR/VC, but 400 W PPPM and SMA package (larger RθJA = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Select when cost sensitivity outweighs peak power requirement and board space allows larger footprint |
| 1.5KE43CA | Through-hole TO-204AA (DO-15), 600 W rating, but not AEC-Q101 qualified | Not approved for automotive production; requires manual assembly | Choose only for prototyping or non-automotive industrial use where reflow compatibility is not required |
Compared with SMAJ43CA and 1.5KE43CA, P6SMB43CAHE3_B/H uniquely combines AEC-Q101 qualification, SMB surface-mount compatibility, and full 600 W surge capability - making it the only drop-in solution for production automotive PCBs requiring zero layout change and guaranteed qualification status.
Availability
P6SMB43CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer power adapters, and telecom PoE injectors requiring stable component supply, AEC-Q101 compliance, and surface-mount manufacturability.
Supply support for P6SMB43CAHE3_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 protection devices with emphasis on reliability and automotive-grade performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for fast clamping, low leakage, and robust thermal behavior in compact SMB packages.
FAQ
What does the "CA" suffix indicate in P6SMB43CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration: P6SMB43CAHE3_B/H conducts symmetrically in both directions above its breakdown voltage, unlike unidirectional "A" variants. This eliminates polarity concerns during PCB placement and enables protection of AC-coupled or floating signal paths - a key design advantage for CAN, RS-485, and sensor bridge circuits where voltage polarity reverses.
Is P6SMB43CAHE3_B/H suitable for automotive applications?
Yes, P6SMB43CAHE3_B/H is AEC-Q101 qualified (indicated by the "HE3_B" suffix), meaning it has passed rigorous stress tests for temperature cycling, humidity, mechanical shock, and lifetime reliability required for automotive electronics. It is explicitly rated for under-hood and body-control module use, supporting junction temperatures up to +150 °C and surviving repeated 10/1000 µs surges at full 600 W rating.
What is the clamping voltage of P6SMB43CAHE3_B/H and why does it matter?
The clamping voltage (VC) of P6SMB43CAHE3_B/H is 59.3 V at 10.1 A peak pulse current (10/1000 µs). This value defines the maximum voltage imposed on protected circuitry during a surge event. A lower VC relative to the protected IC's absolute maximum rating (e.g., 65 V for many 48 V PoE PHYs) ensures safe operation - here, the 5.7 V margin prevents overstress while maintaining system functionality.
How does the SMB package of P6SMB43CAHE3_B/H compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB43CAHE3_B/H measures 0.220" × 0.130", smaller than SMA (DO-214AC) and significantly smaller than SMC (DO-214AB). Its compact size supports high-density layouts, while its RθJA = 100 °C/W and MSL Level 1 rating enable reliable lead-free reflow. Unlike SMAJ or SMCJ series, P6SMB43CAHE3_B/H achieves full 600 W rating in this small outline - a key differentiator for space-constrained automotive modules.
Does P6SMB43CAHE3_B/H require a heatsink for standard operation?
No, P6SMB43CAHE3_B/H does not require an external heatsink for transient suppression duty cycles (e.g., <0.01 % duty cycle per datasheet). Its thermal resistance (RθJA = 100 °C/W) is sufficient when mounted on standard 0.2" × 0.2" copper pads per JEDEC layout. Continuous power dissipation is limited to 5.0 W - well below its 600 W pulsed rating - so heatsinking is unnecessary unless operating near TJ = +150 °C in sustained high-ambient environments.
P6SMB43CAHE3_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):
- 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/H FAQ
1.How can I place an order for P6SMB43CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHE3_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 P6SMB43CAHE3_B/H reliable?
The price and inventory of P6SMB43CAHE3_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 P6SMB43CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHE3_B/H?
P6SMB43CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHE3_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 P6SMB43CAHE3_B/H?
For technical support, including P6SMB43CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB43CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHE3_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 P6SMB43CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHE3_B/H?
All P6SMB43CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHE3_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 P6SMB43CAHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB43CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHE3_B/H Tags
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