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Taiwan Semiconductor Corporation SMBJ9V0CA
- Part No.:
- SMBJ9V0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9V0CA.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,915
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Product details
Overview
SMBJ9V0CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in 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 - suitable for automotive load-dump and industrial I/O port protection.
For engineers reviewing the SMBJ9V0CA datasheet, SMBJ9V0CA pinout, SMBJ9V0CA application, or SMBJ9V0CA equivalent, key selection criteria include bidirectional clamping capability, sub-1 ps response time, <1 µA leakage at 9 V, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and DO-214AA thermal performance (RθJA = 55 °C/W).
Technical Context
The SMBJ9V0CA implements a silicon avalanche diode structure with glass-passivated junction, enabling fast transient response (<1.0 ps) and stable clamping under repetitive surge stress. Its bidirectional configuration allows symmetric protection of AC-coupled or floating signal paths without polarity sensitivity.
Thermally, it supports continuous operation up to TJ = 150 °C with RθJC = 10 °C/W and RθJA = 55 °C/W, and withstands 100 A non-repetitive forward surge (8.3 ms half-sine) in unidirectional mode - though SMBJ9V0CA itself is bidirectional and rated for reverse surge only per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| VBR min/max | 10.0 / 12.2 V @ IT = 1 mA - Ensures reliable avalanche conduction onset within tight tolerance for predictable clamping. |
| VC @ IPP | 16.9 V @ 5 A (10/1000 µs) - Limits downstream voltage during surge to safe levels for 3.3 V or 5 V logic interfaces. |
| PPK | 600 W - Sustains high-energy transients such as ISO 7637-2 Pulse 2b (inductive switch-off) without failure. |
| ID @ VWM | <1 µA - Minimizes standby power loss and avoids false triggering in low-current sensor circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive or enclosed industrial enclosures without derating. |
| Package | DO-214AA (SMB) - Standardized surface-mount footprint compatible with automated assembly and IPC-7351B land patterns. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.090 g; moisture sensitivity level 1 (J-STD-020); UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current return path in bidirectional mode | Connects to protected line; conducts during positive or negative overvoltage events relative to cathode. |
| Cathode (banded end) | Transient current sink node in bidirectional mode | Reference terminal; ties to system ground or common rail; defines clamping reference for both polarities. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure (JESD22-A101). |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - critical for automotive ECUs. |
| Sub-1 ps response time | Clamps transients before sensitive ICs experience overstress - essential for protecting high-speed USB, CAN, or RS-485 receivers. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for export to EU, Japan, and China markets. |
| Level 1 MSL | Zero bake requirement prior to reflow; supports standard SMT processes without moisture-related popcorning risk. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from battery line transients during load dump or jump-start events. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed between LIN line and chassis ground, absorbing ±100 V/500 ms pulses per ISO 7637-2 Pulse 5a. Use Value: Prevents latch-up or gate oxide damage in 3.3 V MCU I/O cells while maintaining signal integrity during normal 12 V operation. |
Use Scenario: Shielding 24 V DC digital input channels from field-wiring induced surges (e.g., relay coil flyback, lightning-induced coupling). IC Role / Device Role / Timing Role: Primary surge suppression element across input terminals, operating in parallel with optocoupler input stage. Use Value: Enables >100,000 surge cycles at 600 W without parameter drift, reducing field failure rates in factory automation systems. |
| LED Streetlight Driver Output Stage | RS-485 Communication Port Protection |
Use Scenario: Safeguarding constant-current LED driver outputs against inductive kickback from long cable runs and nearby motor switching. IC Role / Device Role / Timing Role: High-power TVS connected across output terminals to clamp voltage spikes exceeding 16.9 V before reaching LED strings. Use Value: Eliminates need for oversized output capacitors by limiting transient overshoot to non-destructive levels for 700 mA drivers. |
Use Scenario: Securing full-duplex RS-485 transceivers (e.g., THVD1550) against ESD and EFT events on twisted-pair bus lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed between A/B differential lines and ground, suppressing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains data integrity at 250 kbps over 1200 m while surviving repeated 15 kV air discharge events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA (ON Semiconductor) | Identical VWM (9.0 V), VBR (10.0–12.2 V), VC (16.9 V), and DO-214AA package; minor variation in IR spec (≤1 µA vs ≤5 µA). | Same ISO 7637-2 compliance and thermal specs; validated in automotive Tier-1 BOMs alongside Taiwan Semiconductor parts. | Drop-in replacement where ON Semi sourcing is preferred; verify leakage spec alignment with low-power sleep-mode requirements. |
| P6SMB9.0CA (Littelfuse) | VWM = 9.0 V, VBR = 10.0–12.2 V, VC = 15.4 V @ 5.2 A - slightly lower clamping voltage but reduced PPK (600 W same); identical DO-214AA footprint. | Better clamping performance for margin-critical 3.3 V systems; however, lower IPP rating (5.2 A vs 5.0 A) requires verification against worst-case surge models. | Preferred when tighter VC margin is needed; confirm layout compatibility with Littelfuse's pad recommendations (slightly wider cathode band). |
Compared with SMBJ9V0CA, SMBJ9.0CA offers identical electrical behavior and direct supply-chain interchangeability, while P6SMB9.0CA trades marginally improved clamping for tighter IPP tolerance - making SMBJ9V0CA optimal for general-purpose 600 W surge handling with proven automotive qualification history.
Availability
SMBJ9V0CA is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED lighting drivers, and RS-485 communication ports requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMBJ9V0CA 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, serving global automotive, industrial, and consumer markets since 1979.
The SMBJ series is part of TSC's high-reliability TVS portfolio, engineered specifically for robust transient immunity in harsh environments - emphasizing low clamping voltage, repeatable surge endurance, and AEC-Q101 readiness.
FAQ
What is the maximum clamping voltage of SMBJ9V0CA under standard test conditions?
The SMBJ9V0CA has a maximum clamping voltage (VC) of 16.9 V when subjected to a 10/1000 µs surge current pulse of 5 A, as specified in the Taiwan Semiconductor datasheet Rev. R2104. This value ensures downstream 5 V or 3.3 V circuitry remains within safe operating limits during transient events. The SMBJ9V0CA achieves this clamping performance consistently across its qualified temperature range (−55 °C to +150 °C).
Is SMBJ9V0CA unidirectional or bidirectional, and how does that affect circuit placement?
SMBJ9V0CA is a bidirectional TVS diode, indicated by the "CA" suffix, meaning it provides symmetrical clamping for both positive and negative transients without polarity constraints. Unlike unidirectional variants (e.g., SMBJ9.0A), SMBJ9V0CA can be placed across floating or AC-coupled lines - such as RS-485 differential pairs or transformer-isolated power rails - without requiring orientation verification. This simplifies layout and eliminates risk of reverse installation.
Does SMBJ9V0CA meet automotive surge immunity standards like ISO 7637-2?
Yes, SMBJ9V0CA is explicitly rated to meet ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b - covering key automotive threats including load dump, inductive switching, and coupled noise. Taiwan Semiconductor validates this compliance through standardized surge waveform testing per ANSI/IEEE C62.35. The SMBJ9V0CA's 600 W peak power rating and 16.9 V clamping directly support Pulse 2b (50 V/2 Ω/50 ms) and Pulse 1 (−150 V/2 Ω/400 ms) requirements in 12 V systems.
What is the leakage current specification for SMBJ9V0CA at its working voltage?
At its rated working stand-off voltage (VWM) of 9.0 V and TA = 25 °C, SMBJ9V0CA exhibits a maximum blocking leakage current (ID) of less than 1 µA. This ultra-low leakage minimizes power loss in always-on circuits and prevents false triggering in high-impedance sensing nodes. The SMBJ9V0CA maintains this performance across its full operating temperature range, supporting battery-powered and energy-sensitive designs.
Can SMBJ9V0CA be used in place of SMBJ9.0CA or P6SMB9.0CA without board modifications?
SMBJ9V0CA shares identical DO-214AA (SMB) package dimensions, pinout, and solder pad requirements with SMBJ9.0CA and P6SMB9.0CA, enabling physical drop-in replacement. However, while SMBJ9V0CA and SMBJ9.0CA are electrically identical, P6SMB9.0CA has a lower clamping voltage (15.4 V) but slightly different IPP rating - requiring validation against system-level surge models. The SMBJ9V0CA remains the baseline for design-in where Taiwan Semiconductor qualification is mandated.
SMBJ9V0CA 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):
- 39A
- 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)
SMBJ9V0CA FAQ
1.How can I place an order for SMBJ9V0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9V0CA 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 SMBJ9V0CA reliable?
The price and inventory of SMBJ9V0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9V0CA is usually 5 days.
3.What payment methods are accepted for SMBJ9V0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9V0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9V0CA?
SMBJ9V0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9V0CA 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 SMBJ9V0CA?
For technical support, including SMBJ9V0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9V0CA requirements.
6.How does Aetrix verify that SMBJ9V0CA is sourced from the original manufacturer or authorized distributors?
All SMBJ9V0CA 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 SMBJ9V0CA meets industry standards.
7.What is the process for return or replacement of SMBJ9V0CA?
All SMBJ9V0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9V0CA, 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 SMBJ9V0CA part is unused and in its original packaging.
Return procedure for SMBJ9V0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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