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Taiwan Semiconductor Corporation P6SMB6.8CAH
- Part No.:
- P6SMB6.8CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAH.pdf
- Description:
- 600W, 6.8V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
P6SMB6.8CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 6.46–7.14 V at 10 mA, stand-off voltage 5.80 V, clamping voltage 10.5 V at 60 A peak pulse current, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the P6SMB6.8CAH datasheet, P6SMB6.8CAH pinout, P6SMB6.8CAH application, or P6SMB6.8CAH equivalent, key selection criteria include bidirectional clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, low leakage (<1 µA @ 5.8 V), fast response (<1.0 ps), and compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1.
Technical Context
The P6SMB6.8CAH is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional surge suppression in DC power rails and signal lines. Its symmetrical breakdown behavior (VBR min/max = 6.46/7.14 V, ±5% tolerance) enables identical clamping in both polarities without external polarity management.
It operates across –55°C to +150°C junction temperature range with RθJC = 10°C/W and RθJA = 55°C/W, supporting high-reliability automotive and industrial applications where thermal derating per Fig.2 and peak pulse power handling per Fig.1 must be validated against system-level transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.46 V / 7.14 V - Ensures reliable conduction onset within tight 5% tolerance at 10 mA test current |
| VWM | 5.80 V - Maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 60 A - Peak pulse current capability with 10/1000 µs waveform, defining surge energy absorption limit |
| VC @ IPPM | 10.5 V - Clamped voltage during full-rated surge, limiting downstream IC stress to safe margin |
| PPPSM | 600 W - Non-repetitive peak pulse power rating, critical for ISO 7637-2 Pulse 1 and Pulse 2b immunity |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and signal integrity in always-on circuits |
| TJ max | +150°C - Enables operation in under-hood automotive environments without thermal shutdown |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity marked by cathode band; bidirectional configuration means both terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No fixed anode/cathode designation - either terminal serves as input or return path during transient events in either polarity |
| Cathode band marking | Reference orientation only | Used for physical alignment during placement; does not define functional polarity in CAH variant |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) requirements |
| MSL Level 1 | Zero floor-life limitation - can be mounted directly from reel without baking or dry-pack handling |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | LED Driver Input Stage |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping device placed across power input to absorb >600 W surges without failure. Use Value: Limits voltage to ≤10.5 V during 60 A pulses, preventing damage to downstream PMICs and microcontrollers rated for 16 V absolute max. | Use Scenario: Safeguarding constant-current LED drivers from ESD and switching noise in automotive lighting modules. IC Role / Device Role / Timing Role: Fast-response TVS placed at driver IC input to shunt sub-nanosecond ESD events before propagation. Use Value: Sub-1 ps response ensures clamping activation prior to IC gate oxide breakdown, preserving driver lifetime under repeated 8 kV contact discharge. |
| Industrial Sensor Interface | USB-C Power Delivery Line |
Use Scenario: Shielding analog sensor front-ends (e.g., pressure, temperature) connected to long harnesses in factory automation. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS on supply and signal lines to prevent false triggering and offset drift. Use Value: Stand-off voltage of 5.80 V allows use with 5 V logic rails while maintaining <1 µA leakage, avoiding measurement error or bias current injection. | Use Scenario: Transient suppression on VBUS line of USB-C receptacles exposed to hot-plug and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp protecting PD controller and port power switches from ±15 kV ESD and 10/1000 µs line surges. Use Value: Symmetrical 6.46–7.14 V breakdown ensures equal clamping on positive and negative VBUS excursions, meeting USB-IF ESD compliance thresholds. |
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, 600 W rating, but VBR = 6.46–7.14 V and VC = 10.5 V match P6SMB6.8CAH exactly; differs in JEDEC registration and minor thermal resistance (RθJA = 50°C/W vs. 55°C/W) | Identical clamping performance; preferred where tighter thermal budget exists | Select SMBJ6.8CA if board layout requires lower ambient-to-junction thermal resistance |
| 1.5SMC6.8CA | Higher power rating (1500 W), larger DO-214AB (SMC) package, VBR = 6.46–7.14 V, VC = 10.5 V - same electrical specs but physically incompatible | Used where higher single-pulse energy absorption is required and PCB space permits larger footprint | Choose 1.5SMC6.8CA only when surge threat exceeds 600 W and DO-214AA size constraint is relaxed |
Compared with SMBJ6.8CA and 1.5SMC6.8CA, the P6SMB6.8CAH offers identical electrical clamping and AEC-Q101 qualification in the smallest surface-mount form factor (DO-214AA), making it optimal for space-constrained automotive modules where thermal margin allows RθJA = 55°C/W.
Availability
P6SMB6.8CAH is available at Aetrix Electronics and suitable for automotive ECU protection, LED lighting systems, industrial sensor interfaces, and USB-C power delivery designs requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for P6SMB6.8CAH 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 automotive qualification capabilities.
The P6SMB series is part of TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for robustness in automotive 12 V/24 V power networks and industrial environments subject to ISO 7637-2 and IEC 61000-4-2 stress.
FAQ
What does the "CAH" suffix indicate in P6SMB6.8CAH?
The "CAH" suffix denotes a bidirectional configuration with tightened breakdown voltage tolerance (±5%, 6.46–7.14 V) and AEC-Q101 qualification. Unlike "CH" variants, "CAH" specifies enhanced process control for automotive applications, including JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity - all confirmed in TSC's A2102 datasheet revision for P6SMB6.8CAH.
Is P6SMB6.8CAH compatible with lead-free reflow soldering profiles?
Yes, P6SMB6.8CAH supports standard lead-free reflow per J-STD-020. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AA package withstands peak temperatures up to 260°C for 30 seconds. The device's MSL Level 1 rating eliminates need for dry packing or baking prior to assembly - a verified characteristic documented in the mechanical data section of the P6SMB6.8CAH datasheet.
How does P6SMB6.8CAH perform under ISO 7637-2 Pulse 1 (load dump)?
P6SMB6.8CAH is explicitly rated for ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. With 600 W peak pulse power and 10.5 V clamping at 60 A, it limits induced voltage on protected lines to well below typical 16 V IC absolute maximum ratings during simulated 35 V/100 ms load dump events - a capability confirmed in TSC's application notes and curve Fig.1 for P6SMB6.8CAH.
What is the maximum junction temperature and thermal resistance of P6SMB6.8CAH?
P6SMB6.8CAH has a maximum junction temperature (TJ) of +150°C and thermal resistances of RθJC = 10°C/W and RθJA = 55°C/W, measured per standard JEDEC test conditions. These values are specified in the Thermal Performance table of the official P6SMB6.8CAH datasheet (Version A2102) and enable accurate derating calculations using Fig.2 for ambient temperatures above 25°C.
Does P6SMB6.8CAH require polarity-aware PCB layout?
No - P6SMB6.8CAH is a bidirectional TVS diode, meaning its electrical behavior is identical regardless of terminal orientation. While the DO-214AA package includes a cathode band marking for mechanical reference, the CAH variant functions symmetrically in both directions, eliminating need for polarity-specific routing or silkscreen indicators in PCB layout - a design feature confirmed in the "Devices for Bipolar Applications" section of the P6SMB6.8CAH datasheet.
P6SMB6.8CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB6.8CAH FAQ
1.How can I place an order for P6SMB6.8CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAH 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 P6SMB6.8CAH reliable?
The price and inventory of P6SMB6.8CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8CAH is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAH?
P6SMB6.8CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAH 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 P6SMB6.8CAH?
For technical support, including P6SMB6.8CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAH requirements.
6.How does Aetrix verify that P6SMB6.8CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAH 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 P6SMB6.8CAH meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAH?
All P6SMB6.8CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAH, 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 P6SMB6.8CAH part is unused and in its original packaging.
Return procedure for P6SMB6.8CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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