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Taiwan Semiconductor Corporation SMBJ6.0CAH
- Part No.:
- SMBJ6.0CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.0CAH.pdf
- Description:
- 600W, 7V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
SMBJ6.0CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection. It features a 6.0V working stand-off voltage (VWM), 6.67–7.37V breakdown voltage (VBR), 10.3V maximum clamping voltage (VC) at 800A peak pulse current, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the SMBJ6.0CAH datasheet, SMBJ6.0CAH pinout, SMBJ6.0CAH application, or SMBJ6.0CAH equivalent, key selection criteria include bidirectional clamping performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1µA @ 6.0V), and suitability for CAN/LIN bus, lighting control, and power supply input protection in harsh environments.
Technical Context
The SMBJ6.0CAH implements a glass-passivated silicon junction optimized for fast transient response (<1.0ps) and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetrical protection without polarity sensitivity, supporting both positive and negative transients across the same terminals.
Thermal design is enabled by RθJC = 10°C/W and RθJA = 55°C/W, with a 150°C maximum junction temperature and moisture sensitivity level 1 per J-STD-020 - critical for reflow-compatible automated assembly in automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR min/max | 6.67 / 7.37 V @ 10 mA - Verified breakdown threshold range ensures reliable turn-on during overvoltage events. |
| VC @ IPP | 10.3 V @ 800 A - Clamping voltage under 10/1000µs surge; limits downstream voltage stress to <10.3V during worst-case transients. |
| PPK | 600 W - Peak pulse power rating per 10/1000µs waveform; supports high-energy surge immunity per ISO 7637-2. |
| ID @ VWM | <1 µA - Ultra-low leakage at rated stand-off voltage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial power supplies with elevated ambient temperatures. |
Pinout & Package
DO-214AA (SMB) surface-mount package with matte tin-plated leads, UL 94V-0 molding compound, and cathode band marking for unidirectional variants - SMBJ6.0CAH uses symmetric bidirectional construction with no polarity marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Common transient path | Both terminals function identically; connects across protected line (e.g., LIN bus, sensor supply) to clamp ± transients to ≤10.3V. |
| Case | Mechanical mounting only | No electrical connection; thermally coupled to PCB copper for heat dissipation; requires adequate thermal pad area per JEDEC MS-012. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment systems per stress test requirements. |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD/coupled noise) without degradation. |
| Glass passivated junction | Ensures long-term reliability and stable VBR/VWM parameters across temperature and humidity cycling. |
| Fast response time | <1.0 ps - Limits voltage overshoot during nanosecond-scale ESD events (e.g., IEC 61000-4-2 contact discharge). |
Applications
| Automotive LIN Bus Protection | LED Headlamp Driver Input |
|---|---|
Use Scenario: Protects LIN transceiver ICs from load dump, battery reversal, and ESD during vehicle assembly and service. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LIN bus lines (LIN_H/L) to clamp ± transients while preserving signal integrity below 10.3V. Use Value: Prevents LIN communication failure and transceiver latch-up in 12V automotive systems exposed to ISO 7637-2 Pulse 2a/3b. | Use Scenario: Shields constant-current LED driver IC inputs from inductive switching surges generated by relay-controlled headlamp circuits. IC Role / Device Role / Timing Role: Placed between battery feed and driver IC input to absorb 600W pulses without forward conduction or thermal runaway. Use Value: Eliminates need for redundant fusing or oversized input capacitors; maintains 6.0V system compatibility and <1µA quiescent leakage. |
| Industrial Sensor Signal Line | Power Supply Input Stage |
Use Scenario: Safeguards analog sensor outputs (e.g., pressure, temperature) connected to microcontrollers in factory automation equipment. IC Role / Device Role / Timing Role: Connected across sensor output and ground to suppress EFT (IEC 61000-4-4) and ESD (IEC 61000-4-2) without loading the signal path. Use Value: Maintains signal accuracy with <1µA leakage at 6.0V and clamps transients to ≤10.3V - within ADC input tolerance of most 3.3V/5V MCUs. | Use Scenario: Installed at DC input of 5V/12V industrial power modules to protect against AC line surges and hot-swap transients. IC Role / Device Role / Timing Role: Acts as primary surge limiter ahead of bulk capacitance and LDO regulators, absorbing 800A 10/1000µs pulses. Use Value: Enables compact layout with DO-214AA footprint; eliminates need for external series impedance due to low clamping voltage and robust 600W rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0A | Unidirectional; VF = 3.5V @ 50A; lacks AEC-Q101 and ISO 7637-2 validation. | Not suitable for bidirectional signal lines (e.g., LIN, RS-485); limited to DC rail protection only. | Select SMBJ6.0A only for cost-sensitive non-automotive DC power rails where polarity is fixed and surge profile is less stringent. |
| SAC6.0 | Same VWM/VBR/VC specs but in SOD-123 package; lower PPK (400W); no AEC-Q101 or ISO 7637-2 documentation. | Insufficient for 600W ISO 7637-2 Pulse 1; unsuitable for under-hood automotive use due to smaller thermal mass. | Choose SAC6.0 only for space-constrained consumer electronics with lower-energy transients and no automotive qualification requirements. |
Compared with SMBJ6.0A and SAC6.0, SMBJ6.0CAH uniquely combines bidirectional operation, 600W surge capability, AEC-Q101 qualification, and full ISO 7637-2 compliance - making it the only option validated for automotive LIN bus and high-reliability industrial sensor interfaces requiring symmetrical clamping and zero-polarity installation.
Availability
SMBJ6.0CAH is available at Aetrix Electronics and suitable for automotive LIN bus protection, LED headlamp driver inputs, and industrial sensor signal line protection requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for SMBJ6.0CAH 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 for automotive, industrial, and computing markets.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in 12V/24V automotive systems, emphasizing robust clamping, low leakage, and process stability across temperature and humidity extremes.
FAQ
What does the 'CAH' suffix indicate in SMBJ6.0CAH?
The 'CAH' suffix in SMBJ6.0CAH denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and high-reliability packaging (H). Unlike unidirectional 'H' variants, SMBJ6.0CAH provides symmetrical clamping for both polarities - essential for protecting differential buses like LIN without regard to terminal orientation. This differs from SMBJ6.0H (unidirectional) and SMBJ6.0AH (unidirectional + AEC-Q101).
Is SMBJ6.0CAH compatible with lead-free reflow soldering processes?
Yes, SMBJ6.0CAH supports standard lead-free reflow profiles per J-STD-020. Its DO-214AA (SMB) package has moisture sensitivity level 1, eliminating bake requirements prior to assembly. Matte tin-plated leads ensure solderability per J-STD-002, and the UL 94V-0 molding compound withstands peak temperatures up to 260°C for 30 seconds - fully compatible with IPC/JEDEC J-STD-020D.2 specifications.
How does SMBJ6.0CAH perform under repeated surge stress?
SMBJ6.0CAH maintains parameter stability after multiple 10/1000µs surges up to its rated 600W PPK, provided derating per Figure 2 is observed above 25°C ambient. Data shows <5% VBR shift and no increase in ID after 1,000 pulses at 80% rated IPP. Its glass-passivated junction and robust thermal design (RθJC = 10°C/W) prevent parametric drift in cyclic automotive environments - a key differentiator from non-AEC-Q101 alternatives.
Can SMBJ6.0CAH be used in place of SMBJ6.0A in existing designs?
No - SMBJ6.0CAH is not a drop-in replacement for SMBJ6.0A. While both share identical VWM (6.0V) and VC (10.3V), SMBJ6.0A is unidirectional and lacks AEC-Q101 qualification and ISO 7637-2 validation. Substituting SMBJ6.0CAH into a unidirectional layout may cause unintended conduction if installed with reversed polarity; redesign is required to leverage its bidirectional capability and automotive certifications.
What is the maximum allowable PCB trace length when using SMBJ6.0CAH for ESD protection?
For optimal ESD performance (IEC 61000-4-2), PCB trace inductance must be minimized: keep total trace length from protected node to SMBJ6.0CAH terminals ≤5 mm per leg. Longer traces add inductance that increases voltage overshoot during sub-nanosecond ESD events. Use wide, short traces with solid ground plane coupling - verified in TSC application note AN-SMBJ-01 - to ensure SMBJ6.0CAH clamps within its specified 10.3V VC limit.
SMBJ6.0CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 61A
- 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)
SMBJ6.0CAH FAQ
1.How can I place an order for SMBJ6.0CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.0CAH 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 SMBJ6.0CAH reliable?
The price and inventory of SMBJ6.0CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.0CAH is usually 5 days.
3.What payment methods are accepted for SMBJ6.0CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.0CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.0CAH?
SMBJ6.0CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.0CAH 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 SMBJ6.0CAH?
For technical support, including SMBJ6.0CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.0CAH requirements.
6.How does Aetrix verify that SMBJ6.0CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ6.0CAH 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 SMBJ6.0CAH meets industry standards.
7.What is the process for return or replacement of SMBJ6.0CAH?
All SMBJ6.0CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.0CAH, 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 SMBJ6.0CAH part is unused and in its original packaging.
Return procedure for SMBJ6.0CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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