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Taiwan Semiconductor Corporation SMBJ6.0CH
- Part No.:
- SMBJ6.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.0CH.pdf
- Description:
- 600W, 7.4V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,981
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Product details
Overview
SMBJ6.0CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for high-energy surge protection in automotive and industrial power rails. It features a 6.0 V working stand-off voltage, 600 W peak pulse power rating, 11.4 V maximum clamping voltage at 55 A peak current, and AEC-Q101 qualification for automotive-grade reliability. It protects CAN bus interfaces, microcontroller I/O lines, and DC-DC converter inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ6.0CH datasheet, SMBJ6.0CH pinout, SMBJ6.0CH application, or SMBJ6.0CH equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current at operating voltage, thermal derating above 25°C, and compliance with automotive ESD and surge immunity standards.
Technical Context
The SMBJ6.0CH operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (6.67–8.15 V at 10 mA). Its glass-passivated junction ensures stable VBR and low leakage (<1 µA at 6.0 V), while its DO-214AA (SMB) package provides 10 °C/W junction-to-case thermal resistance for reliable power dissipation during repetitive surges.
It meets ISO 7637-2 test pulses without external series impedance, delivering sub-1 ps response time and clamping transients to ≤11.4 V at 55 A (10/1000 µs waveform). Polarity is marked by cathode band; bidirectional variants use "CAH" suffix and identical packaging but symmetric breakdown in both directions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected circuit's nominal rail. |
| VBR @ IT=10 mA | 6.67–8.15 V - Breakdown voltage range confirming robust avalanche initiation; ensures consistent turn-on across production lots. |
| VC @ IPP=55 A | 11.4 V - Clamping voltage under 10/1000 µs surge; must remain below protected IC's absolute maximum rating. |
| PPK | 600 W - Peak pulse power handling per single transient; defines survivability against ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | <1 µA - Reverse leakage at 6.0 V; negligible power loss and signal integrity impact in always-on systems. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal thermal derating. |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal device with cathode band marking polarity. Dimensions: 4.57 × 3.94 × 2.29 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; completes clamping loop during overvoltage events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., CAN_H, 12V rail); conducts surge current to anode when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress-test requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift under thermal cycling and humidity exposure. |
| Clamping voltage ≤11.4 V @ 55 A | Provides sufficient margin below typical 13.5 V automotive microcontroller I/O absolute maximum ratings. |
| Response time <1.0 ps | Fast enough to suppress ESD and fast transients before sensitive logic states are corrupted. |
| Moisture sensitivity level 1 | Eliminates need for dry-pack or bake-out prior to reflow; compatible with standard SMT assembly processes. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between CAN_H and ground to clamp negative transients and absorb positive surges via common-mode choke coupling. Use Value: Maintains CAN signal integrity by limiting voltage excursions to ≤11.4 V, preventing transceiver latch-up or permanent damage during ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC ADC inputs in factory automation. IC Role / Device Role / Timing Role: Standoff protection on 24 V supply line feeding isolated sensor front-end; absorbs 10/1000 µs surges induced by nearby motor contactors. Use Value: Enables uninterrupted sensor data acquisition by suppressing transients before they reach precision op-amps or sigma-delta ADCs. |
| DC-DC Converter Input Protection | Microcontroller I/O Line Protection |
Use Scenario: Shielding buck converter input stage from battery line transients in automotive infotainment head units. IC Role / Device Role / Timing Role: Primary surge suppression ahead of input capacitor and controller IC; handles repetitive 600 W pulses without degradation. Use Value: Prevents MOSFET gate oxide failure and controller reset by clamping 12 V rail spikes to safe levels during cold-crank or jump-start conditions. | Use Scenario: Guarding GPIO pins of automotive-grade MCUs (e.g., NXP S32K) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) unidirectional clamp tied between I/O pin and ground, minimizing signal distortion. Use Value: Achieves IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) immunity without compromising rise time of digital control signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0AHE3/52 from Vishay | Identical DO-214AA package, same 6.0 V VWM, but tighter VBR range (6.67–7.37 V) and lower VC (10.3 V @ 61 A). | Better clamping margin for 5 V logic rails; slightly higher IPP (61 A vs. 55 A) enables longer surge duration tolerance. | Select when lower clamping voltage is critical and Vishay sourcing is preferred in dual-sourcing strategy. |
| P6SMB6.0A from ON Semiconductor | Same VWM and package, but rated for 600 W with VC = 10.5 V @ 57 A; RoHS-compliant but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial controls where AEC-Q101 is not mandated. | Choose for cost-sensitive non-automotive designs requiring identical electrical performance without automotive certification overhead. |
Compared with SMBJ6.0CH, SMBJ6.0AHE3/52 offers tighter VBR control and lower clamping, improving margin for 5 V systems, while P6SMB6.0A trades AEC-Q101 compliance for broader industrial availability-making SMBJ6.0CH the optimal choice when automotive qualification and Taiwan Semiconductor's supply chain continuity are required.
Availability
SMBJ6.0CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and DC-DC converter input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBJ6.0CH 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 Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 validation capability.
The SMBJH series was developed specifically for automotive and industrial transient protection, emphasizing robustness under ISO 7637-2 pulse stress, low leakage, and compatibility with automated SMT assembly lines.
FAQ
What is the polarity configuration of SMBJ6.0CH?
The SMBJ6.0CH is a unidirectional TVS diode with cathode band marking. It conducts only when the cathode is at a higher potential than the anode by ≥6.67 V, making it suitable for protecting positive rails referenced to ground. Bidirectional operation requires the SMBJ6.0CAH variant, which has symmetric breakdown in both directions.
Does SMBJ6.0CH meet automotive qualification standards?
Yes, SMBJ6.0CH is AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. Its construction-including glass passivation, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1-ensures reliability in under-hood automotive environments up to +150 °C junction temperature.
What is the maximum clamping voltage of SMBJ6.0CH under surge conditions?
The SMBJ6.0CH has a maximum clamping voltage (VC) of 11.4 V when subjected to a 10/1000 µs surge current of 55 A. This value is guaranteed across temperature and process variation and defines the upper voltage limit imposed on the protected circuit during transient events.
Can SMBJ6.0CH be used in bidirectional signal lines like RS-485?
No-SMBJ6.0CH is unidirectional and unsuitable for bidirectional data lines without additional circuitry. For RS-485 or CAN bus protection, use the bidirectional SMBJ6.0CAH variant, which provides symmetrical clamping for both polarities and is explicitly designated for bipolar applications in the datasheet.
What is the leakage current specification for SMBJ6.0CH at its working voltage?
SMBJ6.0CH exhibits a maximum blocking leakage current (ID) of less than 1 µA at its rated working stand-off voltage of 6.0 V. This ultra-low leakage ensures minimal power drain in always-on automotive modules and avoids false triggering in high-impedance sensor circuits.
SMBJ6.0CH 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:
- 11.4V
- Current - Peak Pulse (10/1000µs):
- 55A
- 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)
SMBJ6.0CH FAQ
1.How can I place an order for SMBJ6.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.0CH 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 SMBJ6.0CH reliable?
The price and inventory of SMBJ6.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.0CH is usually 5 days.
3.What payment methods are accepted for SMBJ6.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.0CH?
SMBJ6.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.0CH 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 SMBJ6.0CH?
For technical support, including SMBJ6.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.0CH requirements.
6.How does Aetrix verify that SMBJ6.0CH is sourced from the original manufacturer or authorized distributors?
All SMBJ6.0CH 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 SMBJ6.0CH meets industry standards.
7.What is the process for return or replacement of SMBJ6.0CH?
All SMBJ6.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.0CH, 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 SMBJ6.0CH part is unused and in its original packaging.
Return procedure for SMBJ6.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.0CH Tags
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