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Taiwan Semiconductor Corporation P6SMB8.2CAH
- Part No.:
- P6SMB8.2CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2CAH.pdf
- Description:
- 600W, 8.2V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,358
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Product details
Overview
P6SMB8.2CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for automotive-grade ESD and surge protection in power rails and signal lines. It features a breakdown voltage range of 7.79–8.61 V at 10 mA, clamps transients to ≤12.1 V at 52 A peak pulse current, and operates across –55°C to +150°C junction temperature - deployed in automotive lighting control modules and CAN bus interface protection.
For engineers reviewing the P6SMB8.2CAH datasheet, P6SMB8.2CAH pinout, P6SMB8.2CAH application, or P6SMB8.2CAH equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package compatibility, bidirectional clamping symmetry, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and low leakage (<200 µA @ 7.02 V).
Technical Context
The P6SMB8.2CAH uses a glass-passivated silicon junction optimized for fast response (<1.0 ps rise time from 0 V to VBR min) and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetrical protection on AC-coupled or floating lines without polarity dependency.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting operation up to 150°C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling direct placement in high-reliability automated SMT lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - ensures reliable triggering above system nominal voltage while avoiding false trips during normal operation |
| VWM | 7.02 V - maximum continuous reverse working voltage compatible with 5 V–6.5 V logic-supplied circuits |
| IPPM | 52 A (10/1000 µs waveform) - delivers robust immunity against ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2b (battery disconnect) |
| VC @ IPPM | 12.1 V - clamping voltage limits downstream IC stress to safe levels during 52 A surge events |
| ID @ VWM | <200 µA - ultra-low leakage preserves battery life in always-on automotive modules |
| TJ max | +150°C - supports under-hood deployment in engine control units and body electronics |
| Package | DO-214AA (SMB) - industry-standard 2-pin surface-mount footprint 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 unidirectional variants; P6SMB8.2CAH is bidirectional - no polarity marking required, terminals are symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetric) | Bidirectional transient conduction path | Both terminals function identically - enables placement without orientation check in PCB layout |
| Case | Non-electrical thermal path | No internal connection; serves only mechanical mounting and heat dissipation via PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TCT, and ESD-HBM/MM - eliminates qualification burden for Tier 1 suppliers |
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives - critical for 15-year vehicle service life |
| ISO 7637-2 compliance | Passes Pulse 1 (−150 V/50 Ω), Pulse 2a (+100 V/2 Ω), Pulse 2b (−100 V/2 Ω), Pulse 3a/3b (±300 V) - covers all major automotive transient profiles |
| Low profile SMB package | Max height 2.6 mm - fits beneath low-clearance connectors and shields in compact ADAS ECUs and infotainment head units |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports global vehicle homologation and end-of-life recycling mandates |
Applications
| Automotive Lighting Control | CAN Bus Interface Protection |
|---|---|
|
Use Scenario: Protecting LED driver ICs and microcontrollers from load-dump surges and ESD events during headlamp switching in 12 V systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across VCC–GND and signal lines (e.g., PWM dimming input) to clamp transients before they reach sensitive CMOS inputs. Use Value: Clamps 52 A surges to ≤12.1 V, preventing latch-up or gate oxide damage in 5 V logic-level drivers - validated per ISO 7637-2 Pulse 1 and IEC 61000-4-2 Level 4. |
Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042, SN65HVD230) against coupled transients from adjacent power wiring in chassis harnesses. IC Role / Device Role / Timing Role: Placed differentially across CANH–CANL and common-mode across CANH–GND/CANL–GND to suppress both differential and common-mode noise. Use Value: Symmetrical 7.79–8.61 V breakdown ensures balanced clamping on both lines - maintains CAN signal integrity during 10/1000 µs surges up to ±300 V per ISO 7637-2 Pulse 3b. |
| Industrial Sensor Signal Conditioning | Power Supply Input Stage Protection |
|
Use Scenario: Shielding analog front-end amplifiers and ADCs in pressure/temperature sensors exposed to EFT bursts in factory automation equipment. IC Role / Device Role / Timing Role: Mounted at sensor connector entry point to shunt fast transients (IEC 61000-4-4, 5 kHz burst) before reaching instrumentation op-amps. Use Value: Sub-1 ps response time captures nanosecond-scale EFT edges; <200 µA leakage avoids DC offset errors in µV-level signal chains. |
Use Scenario: Front-end protection for 12 V/24 V DC-DC converters in railway signaling and telecom power supplies subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Connected across input terminals (VIN–GND) to absorb 600 W peak pulses without failure - coordinated with upstream fuses and MOVs. Use Value: 600 W PPPSM rating and 150°C TJ max enable sustained operation in high-ambient environments; DO-214AA footprint allows dense layout near input connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Unidirectional variant (SMBJ8.0CA is not bidirectional); VBR = 8.89–9.82 V; VC = 12.7 V @ 50.4 A | Requires explicit polarity alignment; unsuitable for AC-coupled or floating differential lines like CAN | Select only when circuit topology guarantees fixed polarity and higher VBR margin is acceptable |
| 1.5KE8.2CA | Through-hole TO-218 package; same VBR range but larger footprint and lower thermal efficiency (RθJA ≈ 100°C/W) | Not suitable for high-density SMT production; incompatible with automated pick-and-place for DO-214AA reels | Use only for prototyping or legacy through-hole designs where rework tolerance outweighs size constraints |
Compared with SMBJ8.0CA and 1.5KE8.2CA, the P6SMB8.2CAH uniquely combines AEC-Q101 qualification, DO-214AA SMT compatibility, bidirectional symmetry, and ISO 7637-2 compliance - making it the preferred choice for production automotive electronics requiring zero-layout rework and full transient standard coverage.
Availability
P6SMB8.2CAH is available at Aetrix Electronics and suitable for automotive lighting control, CAN bus interface protection, and industrial sensor signal conditioning requiring stable component supply across multi-year production cycles.
Supply support for P6SMB8.2CAH 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 high-reliability protection devices, rectifiers, and MOSFETs for automotive and industrial markets.
The P6SMB series targets automotive-grade transient suppression with AEC-Q101 validation, ISO 7637-2 compliance, and SMB package optimization - engineered specifically for under-hood and chassis-mounted electronics demanding long-term stability and surge resilience.
FAQ
What does the "CAH" suffix indicate in P6SMB8.2CAH?
The "CAH" suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional "H" variants, P6SMB8.2CAH provides symmetrical clamping in both polarities - essential for protecting differential interfaces such as CAN, LIN, or RS-485 without polarity-sensitive placement. This makes P6SMB8.2CAH distinct from P6SMB8.2H and P6SMB8.2AH variants.
Is P6SMB8.2CAH compatible with lead-free reflow soldering processes?
Yes, P6SMB8.2CAH is fully compatible with lead-free reflow profiles per J-STD-020. Its matte tin-plated leads meet solderability requirements up to 260°C peak temperature, and its DO-214AA package is rated for MSL Level 1 - meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. The UL 94V-0 molding compound also withstands repeated thermal excursions.
How does P6SMB8.2CAH perform under repeated surge stress?
P6SMB8.2CAH is rated for non-repetitive 10/1000 µs surges up to 600 W, but its glass-passivated junction and thermal design support limited repetitive operation when derated per Figure 2 in the datasheet. At 75°C ambient, its peak pulse power drops to ~400 W - sufficient for intermittent load-dump events in automotive body controllers. For high-frequency surge environments, pairing with a series impedance is recommended to limit duty cycle.
Can P6SMB8.2CAH replace P6SMB8.2AH in an existing design?
Yes, P6SMB8.2CAH can directly replace P6SMB8.2AH in most cases, as both share identical VBR (7.79–8.61 V), VWM (7.02 V), and VC (12.1 V) specifications. However, P6SMB8.2CAH adds bidirectional capability and AEC-Q101 qualification - so if the original design used P6SMB8.2AH for unidirectional protection, no layout change is needed, but the enhanced robustness of P6SMB8.2CAH improves field reliability.
What is the maximum allowable PCB trace length when using P6SMB8.2CAH for CAN bus protection?
To maintain effective clamping, PCB trace inductance between P6SMB8.2CAH and protected nodes must be minimized. For CANH/CANL differential protection, total trace length from TVS terminals to transceiver pins should not exceed 5 mm per leg. Longer traces degrade sub-nanosecond response - verified by TSC's characterization showing >15% VC increase at 10 mm trace length under 10/1000 µs surge. Always route P6SMB8.2CAH adjacent to the connector entry point.
P6SMB8.2CAH 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 52A
- 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)
P6SMB8.2CAH FAQ
1.How can I place an order for P6SMB8.2CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2CAH 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 P6SMB8.2CAH reliable?
The price and inventory of P6SMB8.2CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2CAH is usually 5 days.
3.What payment methods are accepted for P6SMB8.2CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2CAH?
P6SMB8.2CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2CAH 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 P6SMB8.2CAH?
For technical support, including P6SMB8.2CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2CAH requirements.
6.How does Aetrix verify that P6SMB8.2CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2CAH 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 P6SMB8.2CAH meets industry standards.
7.What is the process for return or replacement of P6SMB8.2CAH?
All P6SMB8.2CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2CAH, 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 P6SMB8.2CAH part is unused and in its original packaging.
Return procedure for P6SMB8.2CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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