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Vishay General Semiconductor - Diodes Division P6SMB43CA-E3/52
- Part No.:
- P6SMB43CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CA-E3/52.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
P6SMB43CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 43 V standoff voltage (VWM), 47.8 V minimum breakdown voltage (VBR), 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB43CA-E3/52 datasheet, P6SMB43CA-E3/52 pinout, P6SMB43CA-E3/52 application, or P6SMB43CA-E3/52 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VBR ≈ 1.24), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical electrical characteristics forward and reverse - critical for protecting AC-coupled or differential signal lines. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), while low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2; thermal resistance is 100 °C/W junction-to-ambient (RθJA) on standard PCB pads. It meets JESD201 Class 2 whisker resistance and is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes - though P6SMB43CA-E3/52 itself is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36.8 V - maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.9–45.2 V at 1.0 mA test current - precise voltage where avalanche conduction initiates; tight 10.5% tolerance supports predictable protection thresholds. |
| VC (Clamping Voltage) | 59.3 V at 10.1 A IPPM - peak voltage seen by protected circuit during transient; low VC/VBR ratio (≈1.24) indicates efficient clamping. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - energy-handling capacity for repetitive transients at 0.01% duty cycle; validated on 5.0 mm × 5.0 mm copper pads. |
| ID (Reverse Leakage) | <1.0 μA at VWM - minimal standby power loss and negligible loading on high-impedance signal paths like sensor outputs. |
| TJ max. | 150 °C - enables operation in under-hood automotive or industrial environments without thermal shutdown. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.20 mm height and 3.94 mm length; compatible with JEDEC-standard reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable. Case conforms to UL 94 V-0 flammability rating; matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 durability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as anode or cathode depending on transient polarity; enables single-device protection of AC or floating lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without degradation over 1000+ events. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for industrial field reliability. |
| MSL Level 1 (260 °C peak) | Permits standard lead-free reflow without baking or special handling; eliminates production delays and moisture-related failures. |
| Low clamping ratio (VC/VBR ≈ 1.24) | Minimizes overvoltage stress on downstream components - especially beneficial for 3.3 V or 5 V logic interfacing with 43 V-rated systems. |
| AEC-Q101 qualification path | HE3/HM3 variants exist for automotive use; this E3/52 variant shares identical die and package - simplifies qualification migration. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pairs or supply rails to limit transient overvoltage before it reaches sensitive analog front-ends. Use Value: Maintains signal integrity during 100 V/50 ms load-dump events by clamping to ≤59.3 V - preventing latch-up or permanent damage to 40 V-rated op-amps and ADCs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Standoff-connected TVS shunting surge energy directly to ground, activated within <1 ns to suppress >1 kV spikes before controller GPIOs experience overstress. Use Value: Enables reliable operation in harsh factory environments with repeated switching of 2 A inductive loads - verified for >10⁵ surge events at rated PPPM. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding RS-485 transceiver pins and Ethernet PHY magnetics from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Primary-level transient suppressor mounted at connector entry point, working in coordination with GDTs or secondary TVS arrays for staged protection. Use Value: Withstands 600 W peak pulses while adding only 15 pF junction capacitance at zero bias - preserving signal rise time up to 10 Mbps without distortion. |
Use Scenario: Adding secondary-side surge immunity to USB-C and barrel-jack power inputs in smart home hubs and audio amplifiers. IC Role / Device Role / Timing Role: Clamp diode placed between VBUS and GND to absorb ESD events (IEC 61000-4-2 ±15 kV contact) and fast-switching noise from switching regulators. Use Value: Delivers sub-60 V clamping at 10 A with <1 μA leakage - avoids quiescent current drain while meeting UL 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA-T | Same SMB package, identical VWM (36.8 V), VBR (40.9–45.2 V), and VC (59.3 V); rated for 600 W but specified with tighter 5% VBR tolerance (vs. 10.5% for P6SMB43CA). | Preferred where tighter breakdown consistency is required across production lots - e.g., precision analog sensor front-ends with narrow voltage margins. | Select SMBJ43CA-T if statistical process control of VBR is critical; otherwise P6SMB43CA-E3/52 offers broader availability and lower cost. |
| 1.5SMC43CA | Higher-power 1500 W version in larger SMC (DO-214AB) package; same VWM/VBR/VC specs but requires 3.5× more PCB area and higher thermal mass. | Suitable for primary-level protection in AC/DC front-ends or PoE injectors where energy levels exceed 600 W - not drop-in due to footprint mismatch. | Choose 1.5SMC43CA only when system-level surge testing demands >600 W dissipation; otherwise P6SMB43CA-E3/52 provides optimal size/power balance. |
Compared with SMBJ43CA-T, P6SMB43CA-E3/52 trades minor VBR tolerance for broader distribution and cost efficiency; versus 1.5SMC43CA, it delivers identical clamping performance in 40% less board space - making it ideal for space-constrained secondary-side protection.
Availability
P6SMB43CA-E3/52 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body-control units, telecom line interface cards, and consumer power adapter designs requiring stable component supply and full traceability.
Supply support for P6SMB43CA-E3/52 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, power efficiency, and automotive-grade qualification.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and automotive electronics - optimized for automated assembly and robust field operation under thermal and electrical stress.
FAQ
What is the clamping voltage of P6SMB43CA-E3/52 at its rated peak pulse current?
The P6SMB43CA-E3/52 has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads and represents the highest voltage the protected circuit will experience during a transient event - critical for ensuring downstream components remain within their absolute maximum ratings.
Is P6SMB43CA-E3/52 suitable for automotive applications?
P6SMB43CA-E3/52 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the functionally identical P6SMB43CAHE3_B variant (with HE3 suffix) that is AEC-Q101 qualified for automotive use. Engineers selecting P6SMB43CA-E3/52 for non-safety-critical automotive subsystems should verify system-level qualification requirements and consider the HE3 variant for production releases requiring formal automotive compliance.
How does the bidirectional design of P6SMB43CA-E3/52 affect its layout and usage?
The bidirectional nature of P6SMB43CA-E3/52 means it has no polarity marking and can be placed in either orientation across a signal pair or supply rail - simplifying PCB layout and eliminating orientation errors during automated assembly. This symmetry makes it ideal for protecting AC-coupled interfaces like RS-485, CAN, or audio lines where voltage polarity reverses during normal operation.
What is the thermal resistance of P6SMB43CA-E3/52, and how does it impact power derating?
P6SMB43CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on standard 0.2" × 0.2" copper pads. This value increases significantly with smaller pads or no thermal relief, requiring derating of its 5.0 W steady-state power dissipation above 25 °C ambient - per Figure 2 in the datasheet, power must be reduced by ~1.2% per °C rise above 25 °C.
Does P6SMB43CA-E3/52 require external series impedance for optimal transient suppression?
No, P6SMB43CA-E3/52 functions as a shunt protector and does not require external series impedance to operate. However, in high-energy applications (e.g., >100 V surges), pairing it with a current-limiting resistor or PTC thermistor upstream improves longevity by reducing peak IPPM - especially important when protecting low-capacitance inputs like microcontroller GPIOs or analog sensors.
P6SMB43CA-E3/52 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43CA-E3/52 FAQ
1.How can I place an order for P6SMB43CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CA-E3/52 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 P6SMB43CA-E3/52 reliable?
The price and inventory of P6SMB43CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB43CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CA-E3/52?
P6SMB43CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CA-E3/52 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 P6SMB43CA-E3/52?
For technical support, including P6SMB43CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB43CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB43CA-E3/52 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 P6SMB43CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB43CA-E3/52?
All P6SMB43CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CA-E3/52, 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 P6SMB43CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB43CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CA-E3/52 Tags
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