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Vishay General Semiconductor - Diodes Division P6SMB43A-M3/52
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- Part No.:
- P6SMB43A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43A-M3/52.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,986
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Product details
Overview
P6SMB43A-M3/52 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), and clamps to 59.3 V at 10.1 A peak pulse current (10/1000 µs), delivering 600 W peak pulse power for surge protection in automotive and industrial electronics.
For engineers reviewing the P6SMB43A-M3/52 datasheet, P6SMB43A-M3/52 pinout, P6SMB43A-M3/52 application, or P6SMB43A-M3/52 equivalent, this part is selected for robust ESD and lightning-induced transient suppression where low clamping voltage, fast response time, and halogen-free RoHS compliance are required in space-constrained SMB layouts.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable leakage performance (ID ≤ 1.0 µA at VWM) and low incremental surge resistance, enabling precise overvoltage limiting during transient events.
It is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operation from −65 °C to +150 °C junction temperature, and meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow compatibility - confirming suitability for automated SMT assembly in high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1.0 mA test current - defines reliable avalanche initiation range under controlled DC bias |
| VWM | 36.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 59.3 V at 10.1 A (10/1000 µs) - clamping voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient power dissipation capability without failure under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| Construction | Halogen-free, RoHS-compliant, matte tin-plated leads - compliant with JESD201 Class 2 whisker resistance and J-STD-002 solderability |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked with cathode band. Dimensions: 5.59 mm × 4.06 mm × 2.20 mm (L × W × H). Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side (e.g., GND or signal reference); conducts during forward surge or clamp recovery |
| Cathode | Avalanche clamping node / protected line connection | Connected to line being protected (e.g., 36 V rail); reverse-biased during transients to initiate clamping at VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 36 V systems |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream ICs like microcontrollers or CAN transceivers during clamping |
| 100 °C/W junction-to-ambient thermal resistance | Supports derated power handling up to 5.0 W at 50 °C ambient with standard PCB copper area |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and enables direct placement into lead-free reflow profiles |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for automotive and industrial end equipment without sacrificing reliability |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Protecting 36 V battery-fed ECUs (e.g., body control modules) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between power rail and ground, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤59.3 V, preventing damage to 40 V-rated MOSFETs and 3.3 V/5 V logic supplies downstream. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure or temperature sensors in PLC I/O modules) from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) shunt suppressor on differential or single-ended signal traces. Use Value: Maintains signal fidelity with ≤1.0 µA leakage at 36.8 V while clamping 8 kV contact ESD (IEC 61000-4-2) to safe levels. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Feedback Protection |
|
Use Scenario: Safeguarding 48 V PoE-powered network switches and base station RF front-end supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on input bulk capacitor rail, coordinated with upstream fuses and secondary-stage TVS arrays. Use Value: Absorbs 600 W transient energy without degradation, preserving system uptime and reducing need for redundant protection stages. |
Use Scenario: Protecting hall-effect sensor feedback lines in BLDC motor drives from commutation spikes and back-EMF coupling. IC Role / Device Role / Timing Role: Point-of-use suppressor mounted directly at sensor connector, minimizing loop inductance for sub-ns response. Use Value: Prevents false triggering and latch-up in 3.3 V microcontroller ADC inputs by clamping transients to <60 V within nanoseconds. |
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 | Same VBR range (40.9–45.2 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to ≤300 W PPPM; less suitable for repeated 600 W surges or high-temperature environments | Select when board space is critical and thermal margin allows reduced power rating |
| 1.5SMC43A | Same electrical specs, but larger SMC (DO-214AB) package with 125 °C/W RθJA and 1.5 kW PPPM rating | Over-spec'd for 600 W needs; adds cost and area without benefit unless future-proofing for higher surges | Select only if design anticipates upgrade to IEC 61000-4-5 Level 5 or requires extended thermal headroom |
Compared with SMAJ43A and 1.5SMC43A, P6SMB43A-M3/52 delivers optimal balance of 600 W surge capability, SMB footprint compatibility, and halogen-free compliance - making it the preferred choice for volume automotive and industrial designs where reliability, manufacturability, and regulatory alignment are jointly prioritized.
Availability
P6SMB43A-M3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and consumer appliance motor control systems requiring stable component supply across long production lifecycles.
Supply support for P6SMB43A-M3/52 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, efficiency, and application-specific optimization.
The P6SMB Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance, AEC-Q101 readiness, and SMT manufacturability are essential.
FAQ
What is the maximum clamping voltage of P6SMB43A-M3/52 under a 10/1000 µs surge?
The P6SMB43A-M3/52 clamps to a maximum of 59.3 V at 10.1 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Vishay's datasheet Figure 1 and Table on page 2, and reflects the actual voltage imposed on the protected circuit during worst-case transient conditions - critical for verifying compatibility with downstream 40 V-rated components.
Is P6SMB43A-M3/52 suitable for automotive applications?
Yes, P6SMB43A-M3/52 is halogen-free and RoHS-compliant (M3 suffix), and the P6SMB family offers AEC-Q101 qualified variants (e.g., P6SMB43AHM3_B/H). While the -M3/52 variant itself is commercial-grade, its construction, thermal rating (TJ max = 150 °C), and surge robustness align with automotive subsystem requirements - especially when used in non-safety-critical modules like body electronics or infotainment power rails.
What does the "/52" suffix mean in P6SMB43A-M3/52?
The "/52" suffix in P6SMB43A-M3/52 indicates packaging: 7-inch diameter plastic tape and reel, with a standard quantity of 750 units per reel. This format is optimized for high-speed pick-and-place SMT assembly and is compatible with industry-standard feeder systems used in automotive and industrial electronics manufacturing lines.
How does the thermal resistance of P6SMB43A-M3/52 affect its power handling?
P6SMB43A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. At 50 °C ambient, this limits continuous power dissipation to 5.0 W - but its 600 W peak pulse rating applies only for short-duration transients (≤1 ms), not steady-state. Thermal design must ensure adequate copper area to sustain repetitive surges without exceeding 150 °C junction temperature.
Can P6SMB43A-M3/52 replace a bidirectional TVS in a circuit?
No - P6SMB43A-M3/52 is unidirectional, with polarity indicated by a cathode band. It conducts only in reverse breakdown and blocks forward current above ~1.5 V. For AC or bipolar signal lines (e.g., RS-485, USB D+/D−), a bidirectional variant such as P6SMB43CA-M3/52 must be used. Substituting P6SMB43A-M3/52 in bidirectional applications risks forward conduction and failure during normal signal swing.
P6SMB43A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB43A-M3/52 FAQ
1.How can I place an order for P6SMB43A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43A-M3/52 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 P6SMB43A-M3/52 reliable?
The price and inventory of P6SMB43A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB43A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43A-M3/52?
P6SMB43A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43A-M3/52 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 P6SMB43A-M3/52?
For technical support, including P6SMB43A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43A-M3/52 requirements.
6.How does Aetrix verify that P6SMB43A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB43A-M3/52 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 P6SMB43A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB43A-M3/52?
All P6SMB43A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43A-M3/52, 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 P6SMB43A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB43A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43A-M3/52 Tags
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