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Taiwan Semiconductor Corporation P6SMB68CA
- Part No.:
- P6SMB68CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CA.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,682
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Product details
Overview
P6SMB68CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 64.6–71.4V, clamping voltage of 92.0V at 6.8A peak pulse current, and DO-214AA (SMB) package. It protects DC power rails in switching mode power supplies, adapters, and display electronics against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB68CA datasheet, P6SMB68CA pinout, P6SMB68CA application, or P6SMB68CA equivalent, key selection criteria include bidirectional clamping capability, 92.0V max VC@IPPM, 1μA max IR at 58.1V, 1.0ps response time, and compliance with automotive transient immunity standards.
Technical Context
The P6SMB68CA uses a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. Its 600W peak pulse power rating (10/1000μs waveform) and 10°C/W junction-to-case thermal resistance support sustained surge handling in compact SMB layouts.
Designed for unidirectional and bidirectional configurations (C/CA suffix), it delivers symmetrical electrical characteristics in both directions, with VBR min/max of 64.6V/71.4V at 1mA test current and temperature coefficient of 0.104%/°C - critical for stable clamping across automotive (-55°C to +150°C) operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6V / 71.4V at IT = 1mA - defines reliable conduction onset under surge conditions |
| VWM | 58.1V - maximum continuous reverse working voltage before leakage exceeds 1μA |
| VC @ IPPM | 92.0V at 6.8A - clamped voltage during worst-case 10/1000μs transient, limiting downstream stress |
| PPPSM | 600W - non-repetitive peak pulse power handling per standard 10/1000μs waveform |
| IR @ VWM | <1μA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Response time | <1.0ps - enables suppression before sensitive ICs experience overvoltage damage |
| TJ max | +150°C - supports operation in under-hood or enclosed power supply environments |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal, molded plastic case with matte tin-plated leads; polarity indicated by cathode band (bidirectional symmetry means no functional anode/cathode distinction).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | Both terminals serve identical clamping roles - no directional installation required |
| Case | Thermal and mechanical interface | Non-electrical; provides 10°C/W RθJC path to PCB copper for surge energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR and low leakage (<1μA) over lifetime and temperature cycling |
| ISO 7637-2 compliance | Validated for automotive load dump and inductive switching transients (Pulse 1/2a/2b/3a/3b) |
| Moisture sensitivity level 1 | Zero bake requirement before reflow - compatible with standard SMT assembly lines |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in fault conditions |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Infotainment Display |
|---|---|
Use Scenario: Protection of 48V input rails in AC/DC adapters and DC/DC converters against line-induced surges and ESD. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across input terminals to shunt transients before they reach primary-side controller ICs. Use Value: 92.0V clamping voltage limits stress on 100V-rated MOSFETs and bridge rectifiers while maintaining 58.1V working margin. | Use Scenario: Surge protection on LVDS or FPD-Link video interfaces between head unit and TFT display modules. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential pairs to suppress common-mode transients without distorting high-speed signals. Use Value: Sub-1ps response preserves signal integrity up to 100MHz; symmetric VBR ensures equal clamping on both polarities of transient events. |
| Industrial Monitor Power Input | Point-of-Sale (POS) Terminal DC Jack |
Use Scenario: Input-stage protection for 24V-powered commercial monitors exposed to field wiring transients and hot-plug events. IC Role / Device Role / Timing Role: Primary overvoltage guard on bulk input capacitor, absorbing repetitive 600W pulses without degradation. Use Value: 600W PPPSM rating and 150°C TJ max enable reliable operation in sealed enclosures with limited airflow. | Use Scenario: DC input protection on 12V/5V POS terminals connected to wall adapters subject to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense at barrel jack entry point, diverting energy before it reaches USB-C PD controllers or microcontrollers. Use Value: 1μA IR at 58.1V prevents battery drain in always-on retail devices; SMB footprint allows placement directly at connector pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Same DO-214AA package; 64V VBR min (64.0–70.4V), 91.0V [email protected] - slightly tighter VBR tolerance | Identical ISO 7637-2 compliance; lower 0.099%/°C tempco vs. P6SMB68CA's 0.104%/°C | Preferred where tighter VBR consistency is needed across temperature; same layout and thermal performance |
| 1.5KE68CA | Through-hole DO-201 package; 68V VBR min (64.6–71.4V), 100V [email protected] - higher clamping but lower power density | Larger footprint and lower surge repetition rate due to higher RθJA (75°C/W vs. 55°C/W) | Use only when through-hole assembly is mandated; not drop-in due to package and thermal derating differences |
Compared with SMBJ64CA and 1.5KE68CA, the P6SMB68CA offers optimal balance of SMT compatibility, 600W surge capacity, and 92.0V clamping in space-constrained designs - making it preferred for modern adapter and display power stages where board area and thermal management are critical.
Availability
P6SMB68CA is available at Aetrix Electronics and suitable for switching mode power supplies, automotive infotainment displays, and industrial monitor power inputs requiring stable component supply and full traceability.
Supply support for P6SMB68CA 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 power management and protection markets since 1979.
The P6SMB68CA belongs to TSC's P6SMB series of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in automotive, industrial, and consumer power systems - emphasizing robustness, AEC-Q200 readiness, and SMT manufacturability.
FAQ
What does the 'CA' suffix indicate in P6SMB68CA?
The 'CA' suffix in P6SMB68CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with identical VBR, VC, and leakage characteristics across polarity. This eliminates the need for orientation-specific placement on PCBs and ensures protection against voltage reversals such as load dump or inductive kickback in automotive and industrial systems. The P6SMB68CA is fully specified for bidirectional use per TSC documentation.
What is the maximum clamping voltage of P6SMB68CA and under what test condition?
The maximum clamping voltage of P6SMB68CA is 92.0V, measured at a peak pulse current (IPPM) of 6.8A using the standardized 10/1000μs double-exponential surge waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is guaranteed across the full operating temperature range (−55°C to +150°C). It directly determines the safe voltage margin for protected components like MOSFETs or controllers in the P6SMB68CA-protected circuit.
Is P6SMB68CA compliant with automotive transient standards?
Yes, P6SMB68CA meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b - covering key automotive transient waveforms including battery disconnect, alternator load dump, and capacitive coupling noise. Its 600W peak pulse power rating, 92.0V clamping, and −55°C to +150°C operating range align with AEC-Q200 stress testing expectations. While not AEC-Q200 certified out-of-box, the P6SMB68CA's construction and characterization support qualification-ready designs for automotive power and interface protection.
How does the thermal performance of P6SMB68CA affect PCB layout?
The P6SMB68CA has a junction-to-ambient thermal resistance (RθJA) of 55°C/W and junction-to-case (RθJC) of 10°C/W, meaning effective heat dissipation relies heavily on copper area connected to its terminals. For repeated surge events, designers must provide ≥40 mm² of 1-oz copper pour per terminal - especially on the ground side - to avoid thermal runaway. The DO-214AA package's low profile allows tight placement near connectors, but thermal relief patterns should be minimized to preserve thermal conductivity. This thermal behavior is intrinsic to the P6SMB68CA's silicon and packaging design.
Can P6SMB68CA replace P6SMB68C in a design?
No - P6SMB68CA and P6SMB68C are not interchangeable. P6SMB68C is the non-automotive-grade version with looser VBR tolerance (61.2–74.8V vs. 64.6–71.4V for P6SMB68CA) and unspecified ISO 7637-2 compliance. The 'A' suffix in P6SMB68CA indicates tighter parametric control, verified transient performance, and qualification for harsher environments. Substituting P6SMB68C may result in inconsistent clamping, higher failure rates under surge stress, and non-compliance in automotive or industrial applications where the P6SMB68CA is specified.
P6SMB68CA 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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.8A
- 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)
P6SMB68CA FAQ
1.How can I place an order for P6SMB68CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CA 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 P6SMB68CA reliable?
The price and inventory of P6SMB68CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CA is usually 5 days.
3.What payment methods are accepted for P6SMB68CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CA?
P6SMB68CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CA 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 P6SMB68CA?
For technical support, including P6SMB68CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CA requirements.
6.How does Aetrix verify that P6SMB68CA is sourced from the original manufacturer or authorized distributors?
All P6SMB68CA 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 P6SMB68CA meets industry standards.
7.What is the process for return or replacement of P6SMB68CA?
All P6SMB68CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CA, 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 P6SMB68CA part is unused and in its original packaging.
Return procedure for P6SMB68CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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