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Taiwan Semiconductor Corporation P6SMB43C
- Part No.:
- P6SMB43C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43C.pdf
- Description:
- 600W, 43V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,440
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Product details
Overview
P6SMB43C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a standoff voltage of 34.8 V, breakdown voltage range of 38.7–47.3 V at 1 mA, clamping voltage of 61.9 V at 10 A peak pulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b automotive surge immunity standards.
For engineers reviewing the P6SMB43C datasheet, P6SMB43C pinout, P6SMB43C application, or P6SMB43C equivalent, this device is selected for high-reliability surge suppression where fast response (<1.0 ps), low leakage (<1 µA @ 34.8 V), and DO-214AA (SMB) package compatibility with automated SMT assembly are critical design requirements.
Technical Context
The P6SMB43C operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±38.7 V in either polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage, while its thermal resistance (RθJA = 55 °C/W) supports operation up to +150 °C junction temperature under pulsed conditions.
Designed for unidirectional or bidirectional use (C suffix denotes bidirectional), it delivers 600 W non-repetitive peak pulse power per 10/1000 µs waveform, with clamping performance validated at 10 A IPPM and a temperature coefficient of VBR at 0.101 %/°C - enabling predictable voltage tolerance across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 34.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 38.7 V / 47.3 V @ 1 mA - guaranteed avalanche initiation range defining protection threshold |
| VC @ IPPM | 61.9 V @ 10 A - clamped voltage during worst-case 10/1000 µs surge, limiting downstream stress |
| IPPM | 10 A - peak pulse current capability under standard 10/1000 µs transient waveform |
| PPPSM | 600 W - non-repetitive peak pulse power rating, defining single-event surge energy handling |
| ID @ VWM | <1 µA - ultra-low reverse leakage at rated standoff, minimizing standby power loss |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood or enclosed industrial environments |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals - bidirectional clamping allows placement without polarity orientation |
| Case | Thermal and mechanical interface | DO-214AA body provides 10 °C/W junction-to-case thermal resistance for effective heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - enables clamping before sensitive downstream circuitry experiences overvoltage damage |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b - validated for automotive load-dump and inductive-switching surge immunity |
| Glass passivated junction | Stable VBR and low IR drift over temperature and lifetime - critical for long-term reliability |
| Automated placement compatibility | Low-profile DO-214AA package with J-STD-002 solderable terminations - supports high-yield SMT manufacturing |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive - meets environmental compliance for global electronics |
Applications
| Automotive Power Line Protection | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails and ECU supply inputs against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across input terminals to clamp surges to ≤61.9 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or destruction of downstream DC/DC controllers and microcontrollers by limiting transient voltage within safe operating area. | Use Scenario: Safeguarding AC-DC adapter primary-side rectifier outputs and secondary-side 12–48 V DC rails. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive switching spikes and lightning-induced surges on isolated DC outputs. Use Value: Maintains system uptime by eliminating field failures caused by cumulative voltage overstress on optocouplers and feedback ICs. |
| Consumer Monitor Power Supply | Telecom DSL/POE Interface |
Use Scenario: Securing internal 19 V or 24 V LCD backlight and logic supply lines against ESD and board-level coupling. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) bidirectional clamp ensuring no standby current penalty while providing sub-100 ns response. Use Value: Enables slim form factor designs by replacing bulkier MOVs without sacrificing clamping performance or efficiency. | Use Scenario: Protecting Ethernet PHY power pins and data line bias networks in PoE-powered devices against induced surges. IC Role / Device Role / Timing Role: Symmetrical clamping element integrated into front-end filter stage to shunt common-mode transients before magnetics. Use Value: Ensures IEEE 802.3af/at compliance by maintaining <61.9 V clamping across both polarities during multi-kV surge testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same DO-214AA package, identical VWM/VBR/VC specs, but manufactured by Vishay; RθJA = 50 °C/W vs. 55 °C/W | Marginally better thermal performance; same ISO 7637-2 compliance and leakage behavior | Select SMBJ43CA when tighter thermal margin is required in high-density layouts |
| 1.5SMC43CA | Higher power rating (1500 W), larger DO-214AB (SMC) package, VC = 69.4 V @ 21.7 A | Used where higher single-pulse energy absorption is needed, e.g., main DC input vs. local rail protection | Choose 1.5SMC43CA only if PCB space permits larger footprint and system requires >600 W surge handling |
Compared with SMBJ43CA and 1.5SMC43CA, the P6SMB43C offers optimal balance of compact DO-214AA footprint, 600 W rating, and automotive-grade surge immunity - making it preferred for space-constrained, cost-sensitive, and ISO-compliant end-equipment designs.
Availability
P6SMB43C is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial switch-mode power supplies, and consumer display power management requiring stable component supply and full traceability.
Supply support for P6SMB43C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The P6SMB43C belongs to TSC's P6SMBx series of 600 W SMB-packaged TVS diodes, engineered specifically for high-reliability, automated-soldering-ready overvoltage protection in harsh electromagnetic environments.
FAQ
What is the polarity configuration of the P6SMB43C?
The P6SMB43C is a bidirectional TVS diode, meaning it has symmetrical anode/cathode terminals with no polarity marking required. This allows it to clamp transient overvoltages equally in both directions - essential for protecting AC-coupled lines or differential buses like CAN or RS-485. Its C suffix explicitly denotes bidirectional functionality per TSC's ordering convention.
Does the P6SMB43C meet automotive surge immunity standards?
Yes, the P6SMB43C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements - covering key automotive transient scenarios including battery disconnect, inductive load switching, and capacitive coupling. Its 61.9 V clamping voltage at 10 A and fast <1.0 ps response ensure robust protection for ECUs, body control modules, and infotainment power rails.
What is the maximum junction temperature rating for the P6SMB43C?
The P6SMB43C has a maximum junction temperature (TJ) rating of +150 °C, verified per absolute maximum ratings in the TSC datasheet. This enables reliable operation in under-hood automotive environments, enclosed industrial enclosures, and high-ambient-temperature power supply designs - provided PCB copper area and airflow support thermal dissipation per its RθJA = 55 °C/W specification.
How does the P6SMB43C compare to unidirectional variants like P6SMB43A?
The P6SMB43C differs from P6SMB43A in polarity: P6SMB43C is bidirectional (clamps both polarities), while P6SMB43A is unidirectional (cathode-marked, clamps only reverse polarity). Their VWM, VBR, and VC values are identical, but P6SMB43C replaces two unidirectional devices in differential or AC applications - simplifying layout and reducing BOM count without compromising protection level.
Is the P6SMB43C compatible with lead-free reflow soldering processes?
Yes, the P6SMB43C features matte tin-plated leads compliant with J-STD-002 and rated for lead-free reflow soldering. Its DO-214AA (SMB) package withstands peak temperatures up to 260 °C for 10 seconds, and its moisture sensitivity level is rated at Level 1 per J-STD-020 - eliminating bake requirements and supporting high-throughput automated assembly.
P6SMB43C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 10A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43C FAQ
1.How can I place an order for P6SMB43C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43C 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 P6SMB43C reliable?
The price and inventory of P6SMB43C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43C is usually 5 days.
3.What payment methods are accepted for P6SMB43C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43C?
P6SMB43C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43C 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 P6SMB43C?
For technical support, including P6SMB43C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43C requirements.
6.How does Aetrix verify that P6SMB43C is sourced from the original manufacturer or authorized distributors?
All P6SMB43C 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 P6SMB43C meets industry standards.
7.What is the process for return or replacement of P6SMB43C?
All P6SMB43C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43C, 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 P6SMB43C part is unused and in its original packaging.
Return procedure for P6SMB43C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43C Tags
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