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Vishay General Semiconductor - Diodes Division P6SMB43A-E3/52
- Part No.:
- P6SMB43A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43A-E3/52.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB43A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 mA), and 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current - deployed to protect MOSFETs and sensor signal lines in industrial power supplies and automotive ECUs.
For engineers reviewing the P6SMB43A-E3/52 datasheet, P6SMB43A-E3/52 pinout, P6SMB43A-E3/52 application, or P6SMB43A-E3/52 equivalent, key selection criteria include verified unidirectional clamping performance, SMB package thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification eligibility (via HE3/HM3 variants), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage, it avalanches rapidly (response time < 1 ns) to divert surge current away from downstream ICs while maintaining low incremental surge resistance. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and long-term reliability across -65 °C to +150 °C junction temperature range.
The device is optimized for automated SMT assembly on standard PCB copper pads (0.2" × 0.2"), supports repetitive 0.01 % duty cycle surges, and meets UL 94 V-0 flammability requirements. Polarity is marked by a cathode band; no marking applies to bidirectional variants.
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 window for repeatable clamping behavior |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA, setting safe DC bias margin |
| VC @ IPPM | 59.3 V at 10.1 A - clamping voltage during 600 W 10/1000 μs surge, directly limiting stress on protected circuitry |
| PPPM | 600 W - peak pulse power handling capability per standard 10/1000 μs waveform, enabling robust ESD and lightning surge protection |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on minimum recommended pad layout, critical for thermal derating above 25 °C |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine), supporting high-energy inductive switch-off transients |
| TJ max. | +150 °C - maximum junction temperature, allowing operation in under-hood automotive or industrial ambient environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or low-side reference in unidirectional TVS configuration; enables clamping to GND during positive transients |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., sensor input); avalanche conduction occurs when cathode voltage exceeds anode by ≥VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating on standard PCB pads |
| Glass passivated chip junction | Ensures ±5 % VBR tolerance and < 1 nA leakage at 75 % VWM, improving long-term stability in humid environments |
| MSL level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements for production |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (< 1 ns response), reducing voltage stress on downstream CMOS inputs |
| AEC-Q101 qualification path | HE3/HM3 variants support automotive-grade deployment (e.g., body control modules) with full stress-test traceability |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V DC input rails of PLC I/O modules against inductive switching spikes from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and chassis ground, clamping transients within 1 ns to limit voltage excursion below 60 V. Use Value: Prevents latch-up or gate oxide damage in upstream DC-DC controllers and isolated RS-485 transceivers during 100 A/μs load dump events. |
Use Scenario: Safeguarding analog outputs of engine coolant temperature sensors exposed to battery disconnect transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Cathode tied to sensor output line, anode to ground - clamps negative-going transients to ≤ -0.7 V and positive surges to ≤ 59.3 V. Use Value: Maintains ADC input integrity and avoids false fault reporting during ISO 7637-2 Pulse 5a (load dump) events up to 60 V peak. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHY interface power pins (3.3 V/5 V) on base station line cards from induced lightning surges on nearby AC mains. IC Role / Device Role / Timing Role: TVS placed at connector entry point, conducting surge current to local ground plane before reaching PHY IC's internal ESD structures. Use Value: Reduces required board-level clearance distances by 40 % compared to discrete Zener+capacitor solutions while meeting GR-1089-CORE Level 3 surge immunity. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart washing machine main control boards. IC Role / Device Role / Timing Role: Mounted across motor terminals (anode to low-side switch, cathode to supply rail) to clamp flyback energy during PWM turn-off. Use Value: Extends lifespan of H-bridge MOSFETs by limiting VDS overshoot to < 65 V during 50 A inductive turn-off, preventing avalanche-induced wear-out. |
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 SMB package, identical VBR (40.9–45.2 V), but lower PPPM = 400 W and higher VC = 69.4 V at 5.8 A | Not suitable for IEC 61000-4-5 Level 4; limited to Level 2/3 surge testing due to reduced power handling | Select only if system-level surge energy is confirmed ≤ 400 W and layout allows tighter thermal management. |
| 1.5SMC43A | Larger SMC (DO-214AB) package, same electrical specs, RθJA = 60 °C/W, higher IFSM = 200 A | Requires larger PCB footprint; better suited for high-reliability industrial inverters where thermal margin is critical | Choose when board space permits and junction temperature must stay < 125 °C under sustained 100 kHz surge repetition. |
Compared with SMAJ43A and 1.5SMC43A, P6SMB43A-E3/52 delivers optimal balance of compact SMB footprint, 600 W surge capacity, and AEC-Q101 upgrade path - making it preferred for space-constrained automotive and industrial designs requiring validated high-energy clamping.
Availability
P6SMB43A-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom line cards, and consumer appliance motor controls requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6SMB43A-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, precision, and high-volume manufacturability.
The P6SMB Series targets cost-sensitive, high-volume transient protection applications across automotive, industrial, and consumer markets - engineered for automated SMT assembly, tight VBR tolerance, and consistent clamping performance under repetitive surge stress.
FAQ
What is the maximum clamping voltage of the P6SMB43A-E3/52 under a 10/1000 μs surge?
The P6SMB43A-E3/52 has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB43A-E3/52 maintains this clamping performance across its specified operating temperature range (-65 °C to +150 °C) with minimal drift.
Is the P6SMB43A-E3/52 RoHS-compliant and lead-free?
Yes, the P6SMB43A-E3/52 is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It uses matte tin-plated leads and conforms to JEDEC J-STD-020 reflow standards with a maximum peak temperature of 260 °C. The device meets JESD 201 Class 2 whisker resistance requirements and carries UL 94 V-0 flammability certification for the molding compound.
Does the P6SMB43A-E3/52 have AEC-Q101 qualification?
The base P6SMB43A-E3/52 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers AEC-Q101-qualified versions under the HE3 and HM3 suffixes (e.g., P6SMB43AHE3_B). These variants undergo full automotive stress testing including temperature cycling, humidity bias, and accelerated life testing. For automotive use, specify the HE3 or HM3 variant - the P6SMB43A-E3/52 itself is intended for industrial and consumer applications.
What is the thermal resistance of the P6SMB43A-E3/52, and how does it affect power derating?
The P6SMB43A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" copper pads. This value governs power derating: above 25 °C ambient, the device's 5.0 W steady-state power dissipation must be linearly reduced by 40 mW/°C, per Figure 2 in the datasheet. Accurate thermal modeling using this RθJA ensures reliable operation in enclosed enclosures or high-temperature environments.
How does the P6SMB43A-E3/52 differ from bidirectional variants like P6SMB43CA?
The P6SMB43A-E3/52 is unidirectional, with polarity marked by a cathode band and designed to clamp only positive transients relative to ground; it conducts forward current below ~0.7 V. In contrast, P6SMB43CA is bidirectional - symmetrical in both directions, with no polarity marking, and used where AC-coupled or differential signal lines require protection from both polarities. The P6SMB43A-E3/52 cannot substitute for P6SMB43CA in AC applications without circuit redesign.
P6SMB43A-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:
- 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 (SMB)
P6SMB43A-E3/52 FAQ
1.How can I place an order for P6SMB43A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43A-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 P6SMB43A-E3/52 reliable?
The price and inventory of P6SMB43A-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 P6SMB43A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB43A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43A-E3/52?
P6SMB43A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43A-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 P6SMB43A-E3/52?
For technical support, including P6SMB43A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43A-E3/52 requirements.
6.How does Aetrix verify that P6SMB43A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB43A-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 P6SMB43A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB43A-E3/52?
All P6SMB43A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43A-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 P6SMB43A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB43A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43A-E3/52 Tags
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