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Vishay General Semiconductor - Diodes Division P6SMB43AHM3_B/H
- Part No.:
- P6SMB43AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3_B/H.pdf
- Description:
- 600W,43V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,867
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Product details
Overview
P6SMB43AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. 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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB43AHM3_B/H datasheet, P6SMB43AHM3_B/H pinout, P6SMB43AHM3_B/H application, or P6SMB43AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by transient overvoltage events exceeding its reverse stand-off voltage (36.8 V). Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, ensuring reliable suppression of ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports continuous power dissipation of 5.0 W at TA = 50 °C, and maintains stable operation across -65 °C to +150 °C junction temperature range - validated per JESD22-B102 solderability and J-STD-020 reflow profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1.0 mA - defines precise voltage threshold at which clamping begins under standardized test conditions |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets safe DC bias margin |
| VC @ IPPM | 59.3 V at 10.1 A - clamped voltage during 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 600 W - peak transient power handling capability; defines survivability against standardized lightning/surge waveforms |
| RθJA | 100 °C/W - thermal resistance from junction to ambient; governs derating requirements for sustained power dissipation |
| TJ max. | +150 °C - maximum allowable junction temperature; constrains layout copper area and airflow in high-reliability designs |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Cathode indicated by band marking; polarity is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or bias |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); blocks normal operation but avalanches to clamp transients above VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial electronics without compromising surge robustness |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85 % RH; no bake required prior to reflow, simplifying SMT manufacturing flow |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events when properly laid out with 0.2" × 0.2" copper pads per terminal |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA at VWM) over lifetime and temperature extremes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) and body control modules (BCMs) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Limits voltage excursion to ≤59.3 V during 10/1000 μs surges, preventing latch-up or permanent damage to 3.3 V/5 V logic powered from buck converters. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to absorb ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. Use Value: Maintains signal integrity by limiting induced overvoltage to <60 V while adding <0.5 pF junction capacitance - negligible impact on loop bandwidth. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment (e.g., IP cameras, access points) against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary clamping device on input DC bus, coordinated with upstream fuse and downstream LC filter. Use Value: Absorbs up to 600 W transient energy without degradation, enabling compliance with IEC 61000-4-5 Ed.3 Class B immunity requirements. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to divert flyback energy away from H-bridge MOSFETs during PWM commutation. Use Value: Withstands repetitive 100 A surge currents (8.3 ms half-sine), extending MOSFET lifetime and eliminating need for snubber RC networks. |
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 SMA package (DO-214AC); RθJA = 110 °C/W; not AEC-Q101 qualified | Limited to commercial-grade industrial use; unsuitable for automotive under-hood environments | Select when cost or legacy footprint compatibility outweighs automotive qualification and thermal performance needs |
| 1.5SMC43A | Same electrical specs, but larger SMC (DO-214AB) package; higher PPPM = 1500 W; RθJA = 70 °C/W; AEC-Q101 available only in HE3 variant | Better thermal margin and surge headroom; requires larger PCB area and different pad layout | Choose for high-energy surge environments (e.g., outdoor telecom cabinets) where space permits and 1500 W rating is required |
Compared with SMAJ43A-E3/5B, P6SMB43AHM3_B/H offers superior thermal performance and automotive qualification in a compact SMB footprint; versus 1.5SMC43A, it trades surge capacity and thermal efficiency for space-constrained layouts where 600 W suffices.
Availability
P6SMB43AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power inputs, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB43AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and application-specific validation.
The P6SMB series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, halogen-free compliance, and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of P6SMB43AHM3_B/H?
P6SMB43AHM3_B/H is a unidirectional TVS diode, meaning it functions as a reverse-biased avalanche device during transient events. The cathode is marked by a band on the SMB package body and must be connected toward the protected line (e.g., 24 V rail), while the anode connects to ground or the lower-potential reference. This configuration blocks normal forward current but clamps overvoltage in the reverse direction - critical for protecting DC power rails where polarity is fixed.
Does P6SMB43AHM3_B/H meet automotive qualification standards?
Yes, P6SMB43AHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance per the AEC-Q101 standard - making it suitable for under-hood and chassis-mounted automotive applications such as body control modules and ADAS sensor power conditioning.
What is the maximum clamping voltage of P6SMB43AHM3_B/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB43AHM3_B/H is 59.3 V, measured at a peak pulse current (IPPM) of 10.1 A using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage that will appear across the device - and thus across the protected circuit - during a worst-case transient event, directly determining whether downstream components like 3.3 V LDOs or 5 V microcontrollers remain within safe operating limits.
How does the SMB package of P6SMB43AHM3_B/H affect thermal performance?
The SMB (DO-214AA) package of P6SMB43AHM3_B/H delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This thermal performance enables reliable operation at 5.0 W continuous power dissipation up to TA = 50 °C, but requires careful PCB layout - including adequate copper area and minimal trace length - to avoid junction overheating during repetitive surge events or elevated ambient temperatures.
Is P6SMB43AHM3_B/H compatible with lead-free reflow processes?
Yes, P6SMB43AHM3_B/H is fully compatible with lead-free reflow soldering, meeting J-STD-020 moisture sensitivity level (MSL) 1 with a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads comply with JESD22-B102 for solderability, and the halogen-free, RoHS-compliant molding compound ensures process compatibility and environmental compliance - eliminating the need for pre-bake or special handling in standard SMT assembly lines.
P6SMB43AHM3_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:
- 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_B/H FAQ
1.How can I place an order for P6SMB43AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3_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 P6SMB43AHM3_B/H reliable?
The price and inventory of P6SMB43AHM3_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 P6SMB43AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3_B/H?
P6SMB43AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3_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 P6SMB43AHM3_B/H?
For technical support, including P6SMB43AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB43AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3_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 P6SMB43AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3_B/H?
All P6SMB43AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3_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 P6SMB43AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB43AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3_B/H Tags
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