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Taiwan Semiconductor Corporation P6SMB51CA
- Part No.:
- P6SMB51CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51CA.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,359
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Product details
Overview
P6SMB51CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with a standoff voltage of 43.6 V, breakdown voltage range 48.5–53.6 V at 1 mA, and clamping voltage of 70.1 V at 8.9 A peak pulse current. It protects DC power rails and signal lines in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2.
For engineers reviewing the P6SMB51CA datasheet, P6SMB51CA pinout, P6SMB51CA application, or P6SMB51CA equivalent, key selection criteria include bidirectional clamping capability, 70.1 V max clamping at 8.9 A, 1 μA max reverse leakage at 43.6 V, compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and DO-214AA mechanical compatibility for automated SMT assembly.
Technical Context
The P6SMB51CA is a bipolar (bidirectional) TVS diode designed for symmetric transient suppression across both polarities without external polarity management. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM), while fast response time (<1.0 ps) enables effective protection against nanosecond-scale ESD transients.
Thermally, it features RθJC = 10 °C/W and RθJA = 55 °C/W, supporting reliable operation up to TJ = 150 °C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, confirming suitability for standard reflow processes without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC rail margin. |
| VBR (min/max) | 48.5 V / 53.6 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 70.1 V at 8.9 A (10/1000 µs) - Clamped voltage seen by protected circuit under worst-case surge; limits downstream stress. |
| PPPSM | 600 W - Peak pulse power handling per single 10/1000 µs waveform; validates robustness against automotive load dump surges. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage at rated standoff voltage; prevents power loss and false triggering in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in enclosed industrial or automotive ambient environments. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass; compatible with JEDEC-compliant pick-and-place and reflow profiles. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (not applicable for bidirectional P6SMB51CA; terminals are symmetrical). Weight ≈ 0.090 g. UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; connects across protected line and return-functions identically in either orientation. |
| Case | Non-electrical mechanical body | Provides thermal path to PCB copper; no electrical isolation requirement beyond standard SMB creepage/clearance. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validates immunity to real-world automotive electrical disturbances including battery disconnect, inductive load switching, and capacitive coupling noise. |
| Moisture Sensitivity Level 1 (J-STD-020) | Enables direct placement onto PCB without pre-baking; reduces manufacturing complexity and cost in high-volume SMT lines. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for consumer, industrial, and automotive end equipment without compromising electrical performance. |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drive and secondary-side rectifier inputs against flyback spikes and line transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input/output rails to limit voltage excursions during switching transitions and surge events. Use Value: Prevents destructive overvoltage on controller ICs and rectifiers by clamping to ≤70.1 V during 600 W pulses, maintaining system uptime and reducing field failure rates. | Use Scenario: Input-stage surge suppression in wall-mounted AC-DC adapters subjected to lightning-induced surges and ESD contact discharge. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between L/N lines or L/N-to-PE to absorb differential-mode transients before they reach bridge rectifier and bulk capacitor. Use Value: Enables compliance with IEC/EN 61000-4-5 Level 3 (2 kV/1 kA) testing using a single DO-214AA device, minimizing BOM count and board space. |
| Television Power Board | Monitor Backlight Inverter |
Use Scenario: DC bus protection on main power board where 48 V or 54 V rails feed local DC-DC converters and audio amplifiers. IC Role / Device Role / Timing Role: Transient shunt placed across bulk capacitor terminals to clamp load-dump spikes from internal relays or fan motors. Use Value: Limits voltage overshoot to <70.1 V during 8.9 A surges, preventing premature electrolytic capacitor degradation and avoiding audible pop/noise in audio subsystems. | Use Scenario: Protection of CCFL or LED backlight driver outputs against open-circuit arcing and transformer ringing in LCD monitor inverters. IC Role / Device Role / Timing Role: Bidirectional TVS connected across high-voltage output windings to clamp resonant peaks and ESD-induced voltage reversals. Use Value: Suppresses >1 kV ring voltages to <70.1 V within sub-nanosecond response, eliminating lamp flicker and extending inverter transformer insulation life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA (Bourns) | Same DO-214AA package, identical VWM = 43.6 V, VC = 70.1 V @ 8.9 A, but higher typical IR (≤5 µA vs. ≤1 µA). | Acceptable in most adapter/SMPS designs where leakage sensitivity is low; not recommended for ultra-low-power standby circuits. | Select SMBJ51CA if sourcing flexibility is prioritized and leakage budget allows ≤5 µA. |
| 1.5SMC51CA (ON Semiconductor) | Same electrical specs and DO-214AA footprint, but rated for 1500 W peak power (vs. 600 W); larger case volume may affect layout density. | Over-specified for 600 W use cases; suitable when future design scaling to higher surge levels is anticipated. | Choose 1.5SMC51CA only if system-level surge testing exceeds ISO 7637-2 or requires margin beyond 600 W. |
Compared with SMBJ51CA and 1.5SMC51CA, the P6SMB51CA offers optimal balance of low leakage (<1 µA), precise 600 W rating, and MSL-1 manufacturability-making it ideal for cost-sensitive, high-volume consumer power electronics where exact surge energy matching and reflow simplicity are critical.
Availability
P6SMB51CA is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for P6SMB51CA 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, with global distribution and AEC-Q200 qualified product lines.
The P6SMB series is part of TSC's surface-mount TVS platform engineered for high-reliability transient suppression in automotive, industrial, and consumer power systems-designed to meet stringent ISO 7637-2 and IEC 61000-4-5 requirements without derating.
FAQ
What is the maximum clamping voltage of the P6SMB51CA under a 10/1000 µs surge?
The P6SMB51CA has a maximum clamping voltage (VC) of 70.1 V when subjected to an 8.9 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during standardized surge events-critical for ensuring downstream ICs remain within absolute maximum ratings. The P6SMB51CA achieves this clamping performance while dissipating 600 W of transient energy.
Is the P6SMB51CA unidirectional or bidirectional, and how is polarity identified?
The P6SMB51CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. Unlike unidirectional variants (e.g., P6SMB51A), it has no cathode band or polarity marking-the two terminals are functionally identical and provide symmetric clamping in both voltage polarities. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or floating-rail protection schemes using the P6SMB51CA.
Does the P6SMB51CA meet automotive surge immunity standards?
Yes, the P6SMB51CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling noise), making it suitable for 12 V and 24 V automotive power networks. Its 600 W peak power rating, 70.1 V clamping voltage, and glass-passivated junction ensure robust performance under repeated surge stress-validated in Taiwan Semiconductor's qualification testing for the P6SMB51CA family.
What is the reverse leakage current specification for the P6SMB51CA at its standoff voltage?
The P6SMB51CA specifies a maximum reverse leakage current (IR) of 1 µA at its standoff voltage (VWM) of 43.6 V and TA = 25°C. This ultra-low leakage ensures minimal standby power loss and avoids false triggering in high-impedance sensing or control circuits. The P6SMB51CA maintains this spec across its full operating temperature range (−55°C to +150°C), supporting reliable operation in thermally demanding environments.
What package type and moisture sensitivity level does the P6SMB51CA use?
The P6SMB51CA uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. It is rated at Moisture Sensitivity Level 1 per J-STD-020-meaning it can be stored indefinitely at ambient conditions and placed directly into reflow without baking. This simplifies manufacturing logistics and reduces process risk for high-volume production of boards using the P6SMB51CA.
P6SMB51CA 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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.9A
- 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)
P6SMB51CA FAQ
1.How can I place an order for P6SMB51CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51CA 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 P6SMB51CA reliable?
The price and inventory of P6SMB51CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB51CA is usually 5 days.
3.What payment methods are accepted for P6SMB51CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51CA?
P6SMB51CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51CA 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 P6SMB51CA?
For technical support, including P6SMB51CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51CA requirements.
6.How does Aetrix verify that P6SMB51CA is sourced from the original manufacturer or authorized distributors?
All P6SMB51CA 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 P6SMB51CA meets industry standards.
7.What is the process for return or replacement of P6SMB51CA?
All P6SMB51CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51CA, 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 P6SMB51CA part is unused and in its original packaging.
Return procedure for P6SMB51CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51CA Tags
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