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Vishay General Semiconductor - Diodes Division P6SMB43AHE3/5B
- Part No.:
- P6SMB43AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHE3/5B.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,691
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Product details
Overview
P6SMB43AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 mA), 36.8 V stand-off voltage (VWM), and 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current (IPPM). It delivers 600 W peak pulse power (10/1000 μs waveform) and is AEC-Q101 qualified for automotive-grade reliability.
For engineers reviewing the P6SMB43AHE3/5B datasheet, P6SMB43AHE3/5B pinout, P6SMB43AHE3/5B application, or P6SMB43AHE3/5B equivalent, this device serves as a robust overvoltage protection solution for DC power rails and signal lines in harsh environments-particularly where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.31), and high surge immunity are required.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient voltages above its reverse stand-off voltage (36.8 V), limiting downstream circuit exposure to damaging surges. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive stress.
Designed for unidirectional operation, it features cathode-band polarity marking and exhibits low incremental surge resistance (Rdyn ≈ 2.3 Ω derived from ΔV/ΔI = (59.3 V − 36.8 V)/10.1 A), enabling effective energy diversion during ESD or lightning-induced transients. Thermal resistance is rated at RθJA = 100 °C/W on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9–45.2 V at 1.0 mA test current - defines precise turn-on threshold for transient clamping |
| Stand-off Voltage VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| Clamping Voltage VC | 59.3 V at 10.1 A IPPM - limits peak voltage seen by protected ICs during 600 W surge events |
| Peak Pulse Power PPPM | 600 W (10/1000 μs waveform) - sustains high-energy transients without failure under defined duty cycle (0.01 %) |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements including temperature cycling and HTRB |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly; meets UL 94 V-0 flammability |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during reverse-biased transient clamping |
| Cathode | High-side connection point | Connected to protected line (e.g., 36 V rail); avalanche conduction initiates when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables protection against severe ISO 7637-2 Pulse 1/2a/5a transients in 12 V/24 V automotive systems |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring extended lifetime under thermal cycling |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream MOSFETs or CAN transceivers during surge events |
| Fast response time (<1 ns) | Clamps transients before sensitive logic or analog circuits experience destructive overvoltage |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak without baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients above 36.8 V. Use Value: Limits peak voltage to 59.3 V during 600 W surges, preventing damage to upstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector to suppress ESD and cable discharge events before reaching ADC front-end. Use Value: Sub-1 ns response ensures clamping occurs before 12-bit precision amplifiers saturate or latch up. |
| Telecom DC Power Input Protection | Consumer USB-C Power Delivery Line |
|
Use Scenario: Securing −48 V telecom rectifier outputs against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS installed on primary side of isolated DC/DC stage to absorb common-mode transients. Use Value: 150 °C max junction temperature rating enables reliable operation in sealed, fanless telecom enclosures. |
Use Scenario: Adding secondary-level surge protection on VBUS lines of USB-C PD adapters rated for 20 V/5 A output. IC Role / Device Role / Timing Role: TVS placed after primary OVP circuit to catch fast-rising transients missed by slower crowbar devices. Use Value: 36.8 V VWM allows safe operation across full USB PD 3.0 voltage range (5–20 V) while clamping at 59.3 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5B | Same VBR range (40.9–45.2 V), but lower PPPM (400 W) and higher VC (63.0 V at 6.4 A); SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not recommended for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with layout |
| 1.5SMC43A | Same electrical specs but in larger SMC (DO-214AB) package; RθJA = 60 °C/W; identical VBR, VWM, VC, and PPPM | Better thermal performance for high-duty-cycle applications; requires larger PCB area | Choose when sustained surge repetition or elevated ambient temperatures demand lower thermal resistance |
Compared with SMAJ43A-E3/5B, P6SMB43AHE3/5B offers 50 % higher surge power handling and tighter clamping; versus 1.5SMC43A, it saves 30 % board area while trading 40 °C/W higher junction-to-ambient thermal resistance-making it optimal for space-constrained automotive modules where 600 W single-event immunity is mandatory.
Availability
P6SMB43AHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and USB-C PD adapters requiring stable component supply with AEC-Q101 assurance and tape-and-reel delivery.
Supply support for P6SMB43AHE3/5B 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications infrastructure, engineered for robustness against real-world surge threats including load dump, ESD, and lightning-induced transients.
FAQ
What is the maximum clamping voltage of P6SMB43AHE3/5B at its rated peak pulse current?
The maximum clamping voltage (VC) of P6SMB43AHE3/5B is 59.3 V at 10.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event. The P6SMB43AHE3/5B maintains this clamping performance across its specified operating temperature range.
Is P6SMB43AHE3/5B suitable for bidirectional signal line protection?
No, P6SMB43AHE3/5B is a unidirectional TVS diode, intended for DC power rail or single-polarity signal protection. Its cathode-band marking and asymmetric IV curve mean it conducts only in reverse bias. For bidirectional protection (e.g., RS-485, CAN bus), use the CA-suffixed variant P6SMB43CAHE3/5B. The P6SMB43AHE3/5B must not be used on AC-coupled or differential lines without external polarity conditioning.
Does P6SMB43AHE3/5B require derating at elevated ambient temperatures?
Yes, P6SMB43AHE3/5B must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its peak pulse power drops to approximately 420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %). Derating ensures junction temperature remains within the −65 °C to +150 °C limit. Layout with adequate copper pour is essential to maintain thermal performance for P6SMB43AHE3/5B in high-temperature environments.
What does the "HE3" suffix indicate in P6SMB43AHE3/5B?
The "HE3" suffix in P6SMB43AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification. "H" indicates AEC-Q101 compliance, "E3" specifies RoHS-compliant matte tin plating and halogen-free molding compound. This distinguishes it from commercial-grade variants like P6SMB43A-E3/5B (RoHS only) and confirms suitability for automotive applications where stress testing and long-term reliability are mandated.
Can P6SMB43AHE3/5B replace P6SMB43A-E3/5B in an existing design?
Yes, P6SMB43AHE3/5B is a direct functional and mechanical replacement for P6SMB43A-E3/5B, sharing identical electrical specifications, SMB package dimensions, and pinout. The only enhancement is AEC-Q101 qualification-no layout or schematic changes are needed. However, users should verify that the enhanced reliability and qualification of P6SMB43AHE3/5B align with their application's quality and audit requirements before migration.
P6SMB43AHE3/5B 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB43AHE3/5B FAQ
1.How can I place an order for P6SMB43AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHE3/5B 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 P6SMB43AHE3/5B reliable?
The price and inventory of P6SMB43AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB43AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHE3/5B?
P6SMB43AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHE3/5B 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 P6SMB43AHE3/5B?
For technical support, including P6SMB43AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHE3/5B requirements.
6.How does Aetrix verify that P6SMB43AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHE3/5B 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 P6SMB43AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB43AHE3/5B?
All P6SMB43AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHE3/5B, 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 P6SMB43AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB43AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHE3/5B Tags
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