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Vishay General Semiconductor - Diodes Division P6SMB43AHM3_A/H
- Part No.:
- P6SMB43AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB43AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of sensitive electronics. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 mA), 36.8 V stand-off voltage (VWM), 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P6SMB43AHM3_A/H datasheet, P6SMB43AHM3_A/H pinout, P6SMB43AHM3_A/H application, or P6SMB43AHM3_A/H equivalent, this page delivers verified package mapping (SMB/DO-214AA), polarity marking (cathode band), clamping performance under surge conditions, AEC-Q101 qualification status, and direct alternatives for ESD/lightning transient suppression in high-reliability embedded systems.
Technical Context
The P6SMB43AHM3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (40.9–45.2 V), with fast response time (<1 ns) and low incremental surge resistance to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for surface-mount assembly on standard PCB pads (0.2" × 0.2" copper), it meets MSL Level 1 per J-STD-020, supports lead-free reflow up to 260 °C peak, and is halogen-free and RoHS-compliant. The HM3 suffix confirms AEC-Q101 qualification for automotive-grade deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1.0 mA test current - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 59.3 V at 10.1 A - clamping voltage under 600 W 10/1000 µs surge, limiting downstream IC stress to safe levels |
| PPPM | 600 W - peak pulse power handling capability, enabling protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) |
| Junction Temp. Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial environments without derating |
| Package | SMB (DO-214AA) - compact 2-pin SMD outline with cathode band marking, optimized for automated placement and thermal dissipation |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, 2-terminal device with molded epoxy case meeting UL 94 V-0 flammability rating. Cathode identified by a visible band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward-biased transients or DC bias |
| Cathode | Reverse breakdown terminal | Marked with band; connected to protected line (e.g., 12 V rail or CAN_H); avalanches to clamp overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5 without external series impedance |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime, critical for automotive longevity |
| AEC-Q101 qualified (HM3) | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock - no additional qualification needed |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance mandates for global OEM supply chains, including EU and China RoHS |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontrollers and CAN transceivers from load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients above 36.8 V while remaining inert during nominal operation. Use Value: Limits voltage excursion to ≤59.3 V during 10.1 A surge, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital I/O (e.g., RS-485) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line to ground, responding within <1 ns to divert fast transients before reaching precision ADC or UART interface. Use Value: Maintains signal integrity with <1.0 µA leakage at 36.8 V, avoiding offset errors in µA-level current-loop circuits. |
| Telecom Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Front-end surge suppression on 48 V PoE-powered telecom equipment inputs subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC input rail, coordinated with upstream fuse and common-mode chokes. Use Value: Absorbs 600 W pulses without degradation, preserving system uptime in outdoor base station power supplies. |
Use Scenario: Secondary-level protection on VBUS line of USB-C ports in portable monitors and docking stations against hot-plug transients and ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector to shunt ESD before entering USB controller IC. Use Value: Clamps 8 kV contact ESD to <59.3 V in <1 ns, preventing data corruption or port disablement during user interaction. |
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 (40.9–45.2 V), same SMB package, but commercial-grade (not AEC-Q101 qualified); 5.0 W steady-state power rating identical | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMAJ43A-E3/5B for cost-sensitive non-automotive applications requiring identical electrical specs and footprint |
| 1.5SMC43AHE3/A | Same VBR/VC, but larger SMC (DO-214AB) package (7.11 mm x 6.22 mm vs. SMB's 4.57 mm x 3.94 mm); higher thermal mass but incompatible PCB layout | Offers marginally better thermal performance in high-duty-cycle scenarios but requires board redesign | Choose 1.5SMC43AHE3/A only if existing design uses SMC footprint or demands enhanced thermal derating beyond SMB limits |
Compared with SMAJ43A-E3/5B and 1.5SMC43AHE3/A, P6SMB43AHM3_A/H uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and halogen-free construction - making it the only drop-in solution for automotive Tier-1 suppliers requiring full compliance without layout change or material requalification.
Availability
P6SMB43AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power input protection requiring stable component supply across extended production lifecycles.
Supply support for P6SMB43AHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB series was engineered for high-energy transient suppression in space-constrained, high-reliability applications - particularly automotive power distribution, industrial control, and communications infrastructure where consistent clamping and long-term stability are mandatory.
FAQ
What is the exact breakdown voltage range for P6SMB43AHM3_A/H?
The P6SMB43AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 40.9 V to 45.2 V at a test current of 1.0 mA, as specified in the Vishay P6SMB datasheet revision 09-Jan-2024. This tight tolerance ensures consistent clamping behavior across production lots and temperature extremes, and is measured per ANSI/IEEE C62.35 standards. The P6SMB43AHM3_A/H maintains this specification under AEC-Q101 stress conditions.
Is P6SMB43AHM3_A/H suitable for automotive applications?
Yes, P6SMB43AHM3_A/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous automotive reliability tests including temperature cycling, humidity bias HAST, and mechanical shock. It is rated for operation from −65 °C to +150 °C and is commonly used in engine control units, body control modules, and ADAS sensor interfaces. The P6SMB43AHM3_A/H meets all requirements for under-hood and cabin-mounted electronics.
What does the "_A/H" suffix mean in P6SMB43AHM3_A/H?
The "_A" in P6SMB43AHM3_A/H indicates unidirectional polarity (cathode-banded device), while "/H" specifies packaging in 7-inch plastic tape and reel with 750 units per reel. The "HM3" portion confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification. This full suffix ensures traceability to Vishay's ordering matrix and guarantees compliance with automotive material and packaging standards for the P6SMB43AHM3_A/H.
How does P6SMB43AHM3_A/H compare to bidirectional TVS diodes like P6SMB43CA?
P6SMB43AHM3_A/H is unidirectional and intended for DC rail protection where polarity is fixed (e.g., 12 V supply to ground), offering lower leakage and sharper knee characteristics. In contrast, P6SMB43CA is bidirectional and suited for AC or differential signal lines (e.g., RS-485, CAN). They share identical VBR, VC, and PPPM, but P6SMB43AHM3_A/H cannot replace P6SMB43CA in symmetrical surge environments without circuit redesign.
What is the maximum clamping voltage of P6SMB43AHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB43AHM3_A/H is 59.3 V at a peak pulse current (IPPM) of 10.1 A, tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is guaranteed across the full operating temperature range. Designers use this figure to verify that downstream ICs remain within absolute maximum ratings when the P6SMB43AHM3_A/H is active.
P6SMB43AHM3_A/H 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:
- 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:
- 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)
P6SMB43AHM3_A/H FAQ
1.How can I place an order for P6SMB43AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3_A/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 P6SMB43AHM3_A/H reliable?
The price and inventory of P6SMB43AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3_A/H?
P6SMB43AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3_A/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 P6SMB43AHM3_A/H?
For technical support, including P6SMB43AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB43AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3_A/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 P6SMB43AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3_A/H?
All P6SMB43AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3_A/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 P6SMB43AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB43AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3_A/H Tags
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