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Taiwan Semiconductor Corporation P6SMB6.8C
- Part No.:
- P6SMB6.8C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8C.pdf
- Description:
- 600W, 6.8V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,257
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Product details
Overview
P6SMB6.8C from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for surge protection in DC power rails and signal lines. It features a breakdown voltage of 6.12–7.48 V at 10 mA, clamps to ≤10.8 V at 58 A peak pulse current, and operates within -55°C to +150°C junction temperature range. Used in switching mode power supplies, adapters, and consumer displays for IEC 61000-4-2/4-5 compliance.
For engineers reviewing the P6SMB6.8C datasheet, P6SMB6.8C pinout, P6SMB6.8C application, or P6SMB6.8C equivalent, key selection criteria include unidirectional/bidirectional configuration (C suffix = bidirectional), DO-214AA (SMB) surface-mount package compatibility, clamping voltage under 10.8 V at 58 A, low leakage (<1000 µA at 5.5 V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance.
Technical Context
The P6SMB6.8C implements a glass-passivated silicon avalanche junction optimized for fast transient suppression with <1.0 ps response time from 0 V to VBR(min). Its bidirectional architecture enables symmetrical clamping in both polarities, supporting robust protection against ESD, EFT, and surge events without polarity sensitivity.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation at up to 150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, confirming suitability for lead-free reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.12 V / 7.48 V at 10 mA - defines guaranteed avalanche initiation window for predictable clamping onset |
| VWM | 5.50 V - maximum continuous reverse operating voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.8 V at 58 A (10/1000 µs) - peak clamped voltage limiting stress on downstream ICs |
| PPPSM | 600 W - non-repetitive surge power handling capability per standard waveform |
| IR @ VWM | <1000 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150°C - supports operation in thermally constrained industrial and automotive under-hood environments |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with 0.090 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for polarity identification (bidirectional symmetry eliminates functional polarity dependence). Dimensions comply with JEDEC DO-214AA standard; recommended pad layout provided in TSC package drawing Q2209.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional polarity - either terminal accepts positive or negative transients; cathode band is mechanical reference only |
| Case | Non-electrical thermal path | Plastic body provides thermal conduction to PCB copper; no electrical isolation requirement beyond creepage/clearance rules |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| ISO 7637-2 compliance | Validated protection against automotive load dump (Pulse 2b), coupled transients (Pulse 1/3a/3b), and supply line noise |
| Fast 1.0 ps response | Clamps ESD events before sensitive CMOS inputs reach destructive voltage thresholds |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and end-of-life processing |
| MSL Level 1 | Zero bake requirement prior to reflow - compatible with standard SMT assembly lines without moisture sensitivity concerns |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Protection of primary-side controller ICs and secondary-side rectifiers against line surges and MOSFET switching spikes. IC Role / Device Role: Bidirectional TVS placed across input bulk capacitor and output DC rail to clamp differential-mode transients. Use Value: Limits voltage excursions to ≤10.8 V during 600 W 10/1000 µs surges, preventing latch-up or gate oxide rupture in PWM controllers and synchronous rectifiers. | Use Scenario: Input-stage surge suppression in universal-input (90–264 VAC) wall adapters for consumer electronics. IC Role / Device Role: P6SMB6.8C deployed across bridge rectifier output to absorb energy from lightning-induced surges and inductive kickback. Use Value: Withstands 58 A peak pulse current while maintaining clamping below 11 V, preserving safety isolation margins and enabling compact Y-cap sizing. |
| Television Power Board | Monitor DC-DC Converter |
Use Scenario: Protection of main 12 V/24 V distribution bus feeding backlight inverters and audio amplifiers. IC Role / Device Role: Bidirectional placement between power rail and chassis ground to suppress common-mode transients coupled via EMI filters. Use Value: Low 5.5 V stand-off voltage allows integration without interfering with 5 V logic monitoring circuits, while 10.8 V clamping prevents overvoltage damage to display timing controllers. | Use Scenario: Output rail protection in multi-output buck converters supplying logic, interface, and panel bias voltages. IC Role / Device Role: P6SMB6.8C mounted directly at point-of-load regulators to suppress board-level ESD and crosstalk-induced spikes. Use Value: Sub-1 µs response ensures clamping occurs before 3.3 V/5 V LDOs enter dropout or sustain gate-source overvoltage, improving system-level EMC pass rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Same DO-214AA package, identical VBR (6.12–7.48 V), but higher PPPSM = 600 W and lower VC = 10.5 V at 58 A | Marginally tighter clamping; preferred where sub-10.8 V headroom is critical for 5 V rail protection | Select SMBJ6.8CA if lower clamping voltage is required without changing layout or thermal design |
| 1.5KE6.8CA | Higher PPPSM = 1500 W, larger DO-204AC (DO-15) through-hole package, VC = 10.5 V at 132 A | Not surface-mount compatible; requires PCB redesign and wave solder process; suited for high-energy industrial mains inputs | Choose 1.5KE6.8CA only when surge energy exceeds 600 W and through-hole mounting is acceptable |
Compared with SMBJ6.8CA and 1.5KE6.8CA, the P6SMB6.8C offers optimal balance of SMB footprint, 600 W rating, and 10.8 V clamping for space-constrained consumer power designs - avoiding over-engineering while ensuring compliance with IEC 61000-4-5 Level 3.
Availability
P6SMB6.8C is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB6.8C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The P6SMB6.8C belongs to TSC's P6SMB series of surface-mount TVS diodes engineered specifically for cost-sensitive, high-volume surge protection in consumer power electronics - emphasizing reliability, JEDEC-compliant packaging, and automotive-grade transient immunity.
FAQ
What does the 'C' suffix indicate in P6SMB6.8C?
The 'C' suffix in P6SMB6.8C denotes bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB6.8), the P6SMB6.8C has no functional anode/cathode distinction - its avalanche junction operates identically in either polarity, making it ideal for AC-coupled lines or floating DC rails where polarity reversal may occur.
What is the maximum clamping voltage of P6SMB6.8C under standard test conditions?
The maximum clamping voltage of P6SMB6.8C is 10.8 V when subjected to a 10/1000 µs waveform with a peak pulse current of 58 A. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by protected circuitry during worst-case surge events - critical for verifying safe operating margins of downstream 5 V or 3.3 V ICs.
Is P6SMB6.8C compatible with lead-free reflow soldering processes?
Yes, P6SMB6.8C is fully compatible with lead-free reflow soldering. It is rated MSL Level 1 per J-STD-020, requiring no dry-pack or baking prior to assembly. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the UL 94V-0 molding compound withstands peak reflow temperatures up to 260°C, ensuring robust intermetallic formation and joint reliability in modern SMT lines.
How does P6SMB6.8C differ from the 'A' version (P6SMB6.8A)?
P6SMB6.8C and P6SMB6.8A differ in breakdown voltage tolerance: P6SMB6.8C has VBR = 6.12–7.48 V (±10%), while P6SMB6.8A tightens this to 6.46–7.14 V (±5%). Both share identical package, power rating, clamping voltage, and bidirectional functionality. The 'A' variant is selected when tighter VBR control is needed to avoid false triggering near system VCC, whereas P6SMB6.8C offers broader tolerance for cost-sensitive applications.
Does P6SMB6.8C meet automotive transient immunity standards?
Yes, P6SMB6.8C meets ISO 7637-2 Pulse 1 (inductive load disconnect), Pulse 2a (sudden load dump suppression), Pulse 2b (alternator field decay), and Pulses 3a/3b (capacitive coupling and supply line noise), making it suitable for 12 V automotive infotainment and body electronics. Its 600 W rating and 10.8 V clamping provide margin against battery line transients up to ±100 V, though system-level validation per ISO 16750-2 remains required.
P6SMB6.8C 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):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 58A
- 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)
P6SMB6.8C FAQ
1.How can I place an order for P6SMB6.8C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8C 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 P6SMB6.8C reliable?
The price and inventory of P6SMB6.8C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8C is usually 5 days.
3.What payment methods are accepted for P6SMB6.8C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8C?
P6SMB6.8C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8C 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 P6SMB6.8C?
For technical support, including P6SMB6.8C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8C requirements.
6.How does Aetrix verify that P6SMB6.8C is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8C 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 P6SMB6.8C meets industry standards.
7.What is the process for return or replacement of P6SMB6.8C?
All P6SMB6.8C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8C, 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 P6SMB6.8C part is unused and in its original packaging.
Return procedure for P6SMB6.8C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8C Tags
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