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Taiwan Semiconductor Corporation P6SMB6.8A
- Part No.:
- P6SMB6.8A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
P6SMB6.8A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a 6.8V nominal breakdown voltage (6.46–7.14V), 5.80V stand-off voltage, 1000µA max reverse leakage at VWM, 600W peak pulse power rating (10/1000µs), and clamps to ≤10.5V at 60A peak pulse current. It is used in switching mode power supplies to protect downstream ICs from ESD and load-dump transients.
For engineers reviewing the P6SMB6.8A datasheet, P6SMB6.8A pinout, P6SMB6.8A application, or P6SMB6.8A equivalent, key selection criteria include its DO-214AA (SMB) package compatibility with automated placement, low clamping voltage relative to VWM, compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and verified thermal performance (RθJA = 55°C/W).
Technical Context
The P6SMB6.8A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR range (6.46–7.14V at 10mA). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1µA above 10V), while fast response time (<1.0ps) enables effective suppression of nanosecond-scale transients.
It is rated for 600W non-repetitive peak pulse power under 10/1000µs waveform, with thermal limits defined by TJ(max) = 150°C and RθJC = 10°C/W. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.46V / 7.14V at IT = 10mA - defines reliable conduction onset window for overvoltage detection |
| VWM | 5.80V - maximum continuous reverse operating voltage before significant leakage begins |
| IR @ VWM | ≤1000µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| VC @ IPPM | ≤10.5V at 60A - clamping voltage limiting stress on protected ICs during surge events |
| PPPSM | 600W (10/1000µs) - surge energy handling capacity for automotive and industrial transient immunity |
| TJ(max) | +150°C - supports operation in enclosed power supply environments without derating below 125°C ambient |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline enabling automated pick-and-place and IPC-compliant soldering |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and approximate weight of 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., +12V rail); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Clamping ratio (VC/VBR) | ~1.47 (10.5V / 7.14V) - low ratio minimizes voltage overshoot on protected nodes |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Moisture sensitivity level | Level 1 per J-STD-020 - zero floor life limitation; no baking required prior to reflow |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Installed across input bulk capacitor or post-rectifier DC bus to absorb line-induced surges and ringing. IC Role / Device Role: Unidirectional TVS clamp protecting bridge rectifier, controller IC, and bulk capacitor from >100V transients. Use Value: Limits peak rail voltage to ≤10.5V during 600W 10/1000µs pulses, preventing controller latch-up or capacitor overvoltage failure. | Use Scenario: Placed at secondary-side DC output to suppress flyback spikes and ESD from connected devices. IC Role / Device Role: Output-rail protector for USB-powered peripherals and low-voltage logic interfaces. Use Value: Maintains 5.80V stand-off while clamping 60A transients to 10.5V, preserving 5V system integrity without crowbar action. |
| Television Power Board | Monitor DC Input Stage |
Use Scenario: Mounted on main board near PFC stage to mitigate surge coupling from AC mains during lightning events. IC Role / Device Role: Primary-side transient suppressor upstream of PWM controller and gate drivers. Use Value: Withstands 1000µA leakage at 5.80V and triggers within <1ps, ensuring no false trips during normal 6.3V nominal operation. | Use Scenario: Integrated into 12V/19V DC input filter to guard against hot-plug transients and cable discharge events. IC Role / Device Role: Input-line TVS for display controller, backlight driver, and interface ICs. Use Value: Delivers 600W surge absorption in SMB footprint-enabling compact layout without heatsinking or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Same DO-214AA package, identical VBR (6.46–7.14V), but rated for 600W with slightly higher VC (11.2V @ 60A) | Marginally higher clamping voltage reduces protection margin for 5V-tolerant ICs | Select SMBJ6.8A only if legacy design uses it; P6SMB6.8A offers tighter VC spec (10.5V vs. 11.2V) |
| 1.5SMC6.8A | Higher-power SMC package (1500W), same VBR, but larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm) | Not suitable for space-constrained layouts; requires PCB redesign | Choose 1.5SMC6.8A only when surge duty cycle demands >600W or extended thermal mass is needed |
Compared with SMBJ6.8A and 1.5SMC6.8A, the P6SMB6.8A provides optimal balance of low-clamp performance (10.5V), SMB footprint compatibility, and ISO 7637-2 validation-making it preferred for high-density consumer power designs where layout area and precise voltage limiting are critical.
Availability
P6SMB6.8A is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply and full traceability through production ramps.
Supply support for P6SMB6.8A 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, specializing in TVS diodes, rectifiers, MOSFETs, and power management components.
The P6SMB6.8A belongs to TSC's P6SMB series of 600W surface-mount TVS diodes, engineered specifically for cost-sensitive, high-volume consumer and industrial power supply applications demanding robust ISO 7637-2 compliance and automated assembly readiness.
FAQ
What is the polarity configuration of the P6SMB6.8A?
The P6SMB6.8A is a unidirectional TVS diode, marked with a cathode band indicating the terminal that connects to the protected line (e.g., +12V rail), while the anode connects to ground. This configuration allows it to clamp only reverse-polarity transients, making it ideal for DC power rail protection where forward conduction is not required.
Does the P6SMB6.8A meet automotive transient standards?
Yes, the P6SMB6.8A is explicitly validated to meet ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b-covering common automotive electrical disturbances including load dump, supply interruption, and coupled noise. Its 600W rating and 10.5V clamping voltage make it suitable for 12V system front-end protection in infotainment and body control modules.
What is the maximum peak pulse current the P6SMB6.8A can handle?
The P6SMB6.8A supports a maximum peak pulse current (IPPM) of 60A under the standard 10/1000µs waveform. This value is derived directly from its 600W peak pulse power rating and 10.5V clamping voltage (IPPM = PPPSM/VC = 600W / 10.5V ≈ 57.1A, rounded to 60A per datasheet specification).
Is the P6SMB6.8A compatible with lead-free reflow soldering processes?
Yes, the P6SMB6.8A features matte tin-plated leads compliant with J-STD-002 and is rated for moisture sensitivity level 1 per J-STD-020-meaning it can be subjected to standard Pb-free reflow profiles (peak temperature up to 260°C) without baking or special handling, simplifying manufacturing integration.
How does the P6SMB6.8A differ from the P6SMB6.8 variant?
The P6SMB6.8A has tighter breakdown voltage tolerance (6.46–7.14V) versus P6SMB6.8 (6.12–7.48V), lower clamping voltage (10.5V vs. 10.8V at 60A), and higher stand-off voltage (5.80V vs. 5.50V). These improvements provide enhanced noise immunity and more precise overvoltage thresholding, making P6SMB6.8A preferable for designs sensitive to leakage and clamping margin.
P6SMB6.8A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.46V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 60A
- 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)
P6SMB6.8A FAQ
1.How can I place an order for P6SMB6.8A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8A 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 P6SMB6.8A reliable?
The price and inventory of P6SMB6.8A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8A is usually 5 days.
3.What payment methods are accepted for P6SMB6.8A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8A?
P6SMB6.8A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8A 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 P6SMB6.8A?
For technical support, including P6SMB6.8A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8A requirements.
6.How does Aetrix verify that P6SMB6.8A is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8A 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 P6SMB6.8A meets industry standards.
7.What is the process for return or replacement of P6SMB6.8A?
All P6SMB6.8A units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8A, 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 P6SMB6.8A part is unused and in its original packaging.
Return procedure for P6SMB6.8A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8A Tags
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