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Taiwan Semiconductor Corporation SMBJ9.0CA
- Part No.:
- SMBJ9.0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CA.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,075
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Product details
Overview
SMBJ9.0CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor diode (TVS) in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 9.0 V working stand-off voltage (VWM), 10.0–12.2 V breakdown voltage (VBR), 16.9 V maximum clamping voltage (VC) at 5 A peak impulse current, and 600 W peak pulse power rating per 10/1000 µs waveform.
For engineers reviewing the SMBJ9.0CA datasheet, SMBJ9.0CA pinout, SMBJ9.0CA application, or SMBJ9.0CA equivalent, key selection considerations include bidirectional clamping capability, sub-1 ps response time, <1 µA leakage above 10 V, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and suitability for automotive load-dump and EFT-immunity designs.
Technical Context
The SMBJ9.0CA implements a glass-passivated silicon junction optimized for fast transient suppression with minimal capacitance. Its bidirectional configuration enables symmetrical clamping across both polarities without external polarity management, supporting robust protection in AC-coupled or floating interfaces.
Thermal performance is defined by 10 °C/W junction-to-case and 55 °C/W junction-to-ambient resistance, enabling reliable operation up to 150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 12 V systems. |
| VBR min/max | 10.0 / 12.2 V @ 1 mA - Confirmed breakdown threshold range ensures consistent turn-on behavior across production lots. |
| VC @ IPP | 16.9 V @ 5 A - Clamping voltage under standardized 10/1000 µs surge; limits downstream IC stress during transients. |
| PPK | 600 W - Peak pulse power handling per single 10/1000 µs event; supports automotive load-dump and ISO 7637-2 Pulse 5a. |
| ID @ VWM | <1 µA - Ultra-low leakage at rated stand-off voltage preserves battery life and minimizes standby power loss. |
| Response time | <1.0 ps - Sub-picosecond junction response enables effective suppression of ESD events (IEC 61000-4-2) and fast EFT bursts. |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass, UL 94V-0 molding, and matte tin-plated leads. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; dual axial terminals suitable for reflow soldering per J-STD-002; polarity indicated by band for unidirectional variants - SMBJ9.0CA is bidirectional and symmetric, with no functional polarity distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on transient polarity; no PCB orientation dependency required. |
| Case | Non-electrical mechanical interface | No internal connection; provides thermal path to PCB copper and mechanical mounting stability. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime, with reduced parameter drift versus epoxy-passivated alternatives. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive electronics protection against battery disconnect, inductive switching, and coupling noise. |
| J-STD-020 Level 1 moisture sensitivity | Enables unlimited floor life and standard reflow without baking, reducing manufacturing overhead. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for industrial and automotive supply chains. |
| 150 °C max junction temperature | Supports operation in under-hood or enclosed industrial enclosures without derating in most ambient conditions. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V power inputs in body control modules, lighting drivers, and infotainment head units from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤16.9 V during 600 W pulses, preventing latch-up or gate oxide damage in downstream regulators. |
Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules from EFT and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on differential or single-ended signal traces. Use Value: Sub-1 ps response captures fast EFT edges (IEC 61000-4-4), while <1 µA leakage avoids signal offset errors in µA-level sensor circuits. |
| LED Driver Surge Suppression | USB/RS-485 Port ESD Protection |
Use Scenario: Safeguarding constant-current LED drivers in streetlight and signage applications from lightning-induced surges on long feeder cables. IC Role / Device Role / Timing Role: Primary clamping device across input bus, coordinated with MOV or GDT for staged protection. Use Value: 600 W PPK rating handles multi-kA induced surges; DO-214AA footprint allows compact placement near connector entry points. |
Use Scenario: Providing IEC 61000-4-2 Level 4 ESD protection on USB 2.0 data lines and RS-485 transceiver terminals. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into port-level protection network. Use Value: Symmetric clamping eliminates need for dual unidirectional devices; 16.9 V VC ensures transceivers remain within absolute maximum ratings during ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ9.0CA | Same DO-214AC (SMA) package; 16.7 V VC @ 5 A; 400 W PPK rating; higher thermal resistance (RθJA = 65 °C/W). | Lower power handling and larger thermal footprint limit use in high-repetition surge environments. | Select when footprint compatibility with SMA-based legacy designs is required and 400 W rating suffices. |
| ON Semiconductor SMCJ9.0CA | DO-214AB (SMC) package; 16.5 V VC @ 5.2 A; 1500 W PPK; RθJA = 35 °C/W; 0.29 g mass. | Higher surge capacity and better thermal dissipation, but requires larger PCB area and higher assembly cost. | Choose for mission-critical 24 V systems needing >1000 W surge margin or extended thermal cycling endurance. |
Compared with SMAJ9.0CA, SMBJ9.0CA delivers 50% higher peak power (600 W vs. 400 W) in a smaller DO-214AA footprint, while SMCJ9.0CA trades size for 2.5× power headroom and superior thermal performance - selection depends on board space, surge profile severity, and thermal budget.
Availability
SMBJ9.0CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver protection, and USB/RS-485 port hardening requiring stable component supply and full traceability.
Supply support for SMBJ9.0CA 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 ISO 9001 and IATF 16949 certification.
The SMBJ series was engineered for high-reliability transient suppression in automotive and industrial environments, emphasizing fast response, low leakage, and robust AEC-Q200-aligned construction.
FAQ
What is the clamping voltage of SMBJ9.0CA under a 10/1000 µs surge?
The SMBJ9.0CA has a maximum clamping voltage (VC) of 16.9 V when subjected to a 5 A peak impulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's R2104 datasheet, ensuring predictable voltage limiting during standardized surge events.
Is SMBJ9.0CA unidirectional or bidirectional?
SMBJ9.0CA is a bidirectional TVS diode, as indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping for both positive and negative transients without polarity sensitivity, making it ideal for AC-coupled lines or floating DC buses where polarity reversal may occur.
What package does SMBJ9.0CA use, and is it RoHS compliant?
SMBJ9.0CA uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads and UL 94V-0 molding compound. It is fully RoHS compliant and halogen-free per IEC 61249-2-21, meeting environmental requirements for automotive and industrial deployments.
Does SMBJ9.0CA meet automotive surge immunity standards?
Yes, SMBJ9.0CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for transient immunity in 12 V automotive systems. Its 600 W peak power rating and 16.9 V clamping voltage enable robust protection against load dump, inductive switching, and coupled noise per OEM specifications.
What is the maximum junction temperature rating for SMBJ9.0CA?
The SMBJ9.0CA has a maximum junction temperature (TJ) rating of +150 °C, validated across its full operating range. This allows deployment in under-hood automotive modules and sealed industrial enclosures without thermal derating under typical ambient conditions up to +125 °C.
SMBJ9.0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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)
SMBJ9.0CA FAQ
1.How can I place an order for SMBJ9.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CA 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 SMBJ9.0CA reliable?
The price and inventory of SMBJ9.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CA is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CA?
SMBJ9.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CA 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 SMBJ9.0CA?
For technical support, including SMBJ9.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CA requirements.
6.How does Aetrix verify that SMBJ9.0CA is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CA 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 SMBJ9.0CA meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CA?
All SMBJ9.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CA, 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 SMBJ9.0CA part is unused and in its original packaging.
Return procedure for SMBJ9.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CA Tags
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