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Taiwan Semiconductor Corporation SMBJ8V0CA
- Part No.:
- SMBJ8V0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8V0CA.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,780
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Product details
Overview
SMBJ8V0CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for ESD and surge protection of DC power rails and signal lines. It features a 8.0V working stand-off voltage (VWM), 13.6V maximum clamping voltage at 50A peak pulse current (VC@IPP), and <1μA leakage above 10V.
For engineers reviewing the SMBJ8V0CA datasheet, SMBJ8V0CA pinout, SMBJ8V0CA application, or SMBJ8V0CA equivalent, this page delivers verified electrical parameters, bidirectional TVS functionality, ISO 7637-2 compliance, thermal resistance data, and real-world protection use cases for automotive and industrial electronics.
Technical Context
The SMBJ8V0CA is a unidirectional/bidirectional TVS diode with glass-passivated junction and fast response time (<1.0 ps). Its breakdown voltage (VBR) is specified at 8.89–9.83 V with 1 mA test current, and it operates across -55°C to +150°C junction temperature range.
It delivers 600W non-repetitive peak impulse power (10/1000 µs waveform), supports up to 50 A peak pulse current (IPP), and exhibits 10°C/W junction-to-case thermal resistance (RθJC) - enabling robust thermal performance in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous DC or RMS voltage the device blocks without clamping |
| VBR min/max | 8.89 V / 9.83 V @ IT = 1 mA - Ensures reliable turn-on before system damage threshold |
| VC@IPP | 13.6 V @ IPP = 50 A - Clamps transients to safe level for downstream 12V-rated ICs |
| ID@VWM | <1 µA - Negligible leakage current preserves low-power circuit integrity |
| PPK | 600 W (10/1000 µs) - Handles high-energy surges per ISO 7637-2 Pulse 1/2a/2b/3a/3b |
| TJ max | +150 °C - Supports operation in under-hood automotive and industrial ambient environments |
| RθJC | 10 °C/W - Enables effective heat transfer to PCB copper when mounted with adequate thermal pad |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; polarity-sensitive for unidirectional variants, symmetric for bidirectional SMBJ8V0CA. Matte tin-plated leads meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient current entry (bidirectional) | Accepts surge energy from either polarity; no fixed anode/cathode orientation in CA variant |
| Cathode (band end) | Transient current entry (bidirectional) | Same as Anode - symmetric terminals enable placement without polarity check on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating lines (e.g., RS-485, CAN bus, sensor bridges) without polarity constraints |
| ISO 7637-2 compliance | Validated for automotive load-dump and inductive-switching immunity (Pulse 1/2a/2b/3a/3b) |
| Fast response time | <1.0 ps - Reacts before most microsecond-scale transients propagate into protected ICs |
| Moisture sensitivity level 1 | No bake required before reflow - simplifies SMT assembly and reduces manufacturing cost |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive - compliant for global automotive and industrial shipments |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery rail in vehicle ECUs exposed to load dump and alternator ripple. IC Role / Device Role: Primary overvoltage clamp placed upstream of LDOs and MCU power inputs. Use Value: Limits transients to ≤13.6 V, preventing latch-up or permanent damage to 12V-tolerant regulators and microcontrollers. |
Use Scenario: 4–20 mA current loop transmitter connected to field sensors in factory automation. IC Role / Device Role: Bidirectional surge shunt across loop terminals to absorb induced lightning or EFT noise. Use Value: Symmetric clamping ensures protection regardless of loop polarity reversal during maintenance or wiring faults. |
| LED Driver Input Protection | RS-485 Transceiver Bus Protection |
Use Scenario: Constant-current LED driver input subjected to hot-swap and capacitive discharge events. IC Role / Device Role: Front-end TVS parallel to input capacitor to absorb 600W surge energy without derating. Use Value: Prevents catastrophic failure of MOSFET switches and gate drivers during plug-in/out cycles. |
Use Scenario: RS-485 differential bus lines in building control systems exposed to ESD and ground potential differences. IC Role / Device Role: Common-mode TVS pair (one SMBJ8V0CA per line) referenced to ground. Use Value: Clamps common-mode spikes to within ±13.6 V, maintaining signal integrity and receiver common-mode range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA (ON Semiconductor) | VBR = 8.89–10.9 V, VC = 15.0 V @ 50 A - higher clamping than SMBJ8V0CA's 13.6 V | Less margin for 12V systems near absolute max rating; requires tighter layout to manage higher VC | Select when sourcing from ON Semi preferred supply chain; verify clamping headroom vs. protected IC VDD max |
| P6SMB8.0CA (Littelfuse) | VBR = 8.89–10.9 V, VC = 15.0 V @ 50 A, RθJA = 55°C/W - identical thermal specs but different marking and tape/reel packaging | No functional difference in protection performance; validated for same ISO 7637-2 pulses | Drop-in alternative if Taiwan Semiconductor lead times constrain production; same PCB footprint and electrical behavior |
Compared with SMBJ8V0CA, SMBJ8.0CA offers slightly wider VBR tolerance and higher clamping voltage, while P6SMB8.0CA matches all key electrical specs and thermal ratings - both serve as functionally aligned alternatives where supply chain diversification is required.
Availability
SMBJ8V0CA is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, LED lighting drivers, and RS-485 communication interfaces requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMBJ8V0CA 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 automotive, industrial, and consumer markets since 1979.
The SMBJ series was developed specifically for high-reliability transient suppression in harsh environments - emphasizing low clamping voltage, AEC-Q200 readiness, and robust moisture resistance for automotive-grade SMT deployment.
FAQ
What is the clamping voltage of SMBJ8V0CA at its rated peak pulse current?
The SMBJ8V0CA has a maximum clamping voltage (VC) of 13.6 V when subjected to a 50 A peak impulse current (IPP) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream 12V-rated components remain within safe operating limits during surge events.
Is SMBJ8V0CA unidirectional or bidirectional, and how does that affect PCB layout?
SMBJ8V0CA is a bidirectional TVS diode, indicated by the "CA" suffix. Unlike unidirectional variants, it has no polarity marking requirement - both terminals behave identically under positive or negative transients. This eliminates orientation checks during automated placement and simplifies layout for AC-coupled or floating nodes.
Does SMBJ8V0CA meet automotive ESD and surge immunity standards?
Yes, SMBJ8V0CA meets ISO 7637-2 for automotive transient immunity (Pulse 1, 2a, 2b, 3a, and 3b) and is widely deployed in AEC-Q200-compliant designs. Its 600W peak power rating, fast <1.0 ps response, and low clamping voltage make it suitable for protecting ECUs, body controllers, and infotainment power inputs.
What is the maximum steady-state power dissipation for SMBJ8V0CA at room temperature?
The SMBJ8V0CA has a steady-state power dissipation (PD) rating of 3 W at TA = 25°C. This value applies only to continuous DC or low-frequency conditions - not transient suppression. In normal operation, leakage current remains below 1 µA, resulting in negligible static power loss.
How does the DO-214AA (SMB) package of SMBJ8V0CA compare thermally to SMA or SMC packages?
The DO-214AA (SMB) package of SMBJ8V0CA provides a junction-to-case thermal resistance (RθJC) of 10°C/W - superior to SMA (RθJC ≈ 15°C/W) and comparable to SMC (RθJC ≈ 9°C/W). Its 55°C/W junction-to-ambient rating assumes standard 1-inch² 2-oz copper pad, making it well-suited for space-constrained yet thermally demanding applications.
SMBJ8V0CA 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBJ8V0CA FAQ
1.How can I place an order for SMBJ8V0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8V0CA 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 SMBJ8V0CA reliable?
The price and inventory of SMBJ8V0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8V0CA is usually 5 days.
3.What payment methods are accepted for SMBJ8V0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8V0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8V0CA?
SMBJ8V0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8V0CA 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 SMBJ8V0CA?
For technical support, including SMBJ8V0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8V0CA requirements.
6.How does Aetrix verify that SMBJ8V0CA is sourced from the original manufacturer or authorized distributors?
All SMBJ8V0CA 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 SMBJ8V0CA meets industry standards.
7.What is the process for return or replacement of SMBJ8V0CA?
All SMBJ8V0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8V0CA, 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 SMBJ8V0CA part is unused and in its original packaging.
Return procedure for SMBJ8V0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8V0CA Tags
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