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Taiwan Semiconductor Corporation SMCJ8V0CA
- Part No.:
- SMCJ8V0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8V0CA.pdf
- Description:
- 1500W, 9.4V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,249
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Product details
Overview
SMCJ8V0CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 8.0 V working stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR), and 13.6 V maximum clamping voltage (VC) at 50 A peak pulse current - designed for ESD and surge protection of automotive power rails and industrial I/O interfaces.
For engineers reviewing the SMCJ8V0CA datasheet, SMCJ8V0CA pinout, SMCJ8V0CA application, or SMCJ8V0CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1 ps response time, <1 µA reverse leakage above 10 V, and DO-214AB thermal performance (RθJA = 55°C/W).
Technical Context
The SMCJ8V0CA employs a glass-passivated silicon junction optimized for fast transient suppression in bidirectional configurations. Its clamping behavior is characterized by a defined 10/1000 µs waveform per REA standards, with guaranteed VC ≤ 13.6 V at IPPM = 50 A and TJ ≤ 150°C operation.
It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, and supports automated placement due to matte tin-plated leads compliant with J-STD-002. Polarity is marked via cathode band - though unused in bidirectional CA variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 8.89 V / 9.83 V @ IT = 1 mA - ensures reliable turn-on within tight tolerance band |
| VC @ IPPM | 13.6 V @ 50 A - limits downstream voltage stress during 10/1000 µs transients |
| PPK | 1500 W - peak pulse power handling capacity under standardized surge conditions |
| IR @ VWM | <1 µA - negligible leakage current preserves low-power circuit integrity |
| TJ max | +150°C - enables use in under-hood automotive and high-ambient industrial environments |
| RθJA | 55°C/W - defines thermal derating slope for PCB layout and heatsinking decisions |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with no polarity-sensitive terminals - cathode band marking is present but functionally inactive for CA suffix devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as input/output; clamps voltage excursions above ±13.6 V regardless of polarity |
| Case (cathode band marking) | Manufacturing polarity indicator | Non-functional for SMCJ8V0CA - included for process consistency with unidirectional variants |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| Sub-1 ps response time | Enables protection of high-speed logic and analog front-ends before damage occurs |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing cost and risk |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU directives for environmentally constrained applications |
| UL 94V-0 molding compound | Prevents flame propagation in safety-critical enclosures and power systems |
Applications
| Automotive Power Rail Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of DC-DC converters and microcontroller power inputs. Use Value: Limits transient voltage to ≤13.6 V, preventing latch-up or gate oxide damage in downstream ICs rated for 16 V absolute max. | Use Scenario: Shielding PLC digital input modules from field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Primary surge shunt on signal lines connected to optocoupler or isolator inputs. Use Value: Absorbs 1500 W pulses without degradation, maintaining signal integrity and enabling >100,000 surge cycles per device lifetime. |
| LED Driver Overvoltage Clamp | USB/RS-485 Transceiver Protection |
Use Scenario: Safeguarding constant-current LED drivers from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp flyback spikes. Use Value: Clamps spikes within 13.6 V, preserving LED string forward voltage margin and avoiding overvoltage shutdown. | Use Scenario: Adding robustness to industrial communication ports exposed to ground potential differences and lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protection placed after common-mode chokes and before transceiver ICs. Use Value: Withstands repeated 1 kV EFT bursts per IEC 61000-4-4 while maintaining <1 µA leakage at 8 V operating point. |
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 | 600 W PPK rating, same VWM/VBR/VC specs, SMB package (smaller footprint, higher RθJA = 75°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and surge energy does not exceed 600 W |
| 1.5KE8.0CA | Through-hole DO-201 package, 1500 W PPK, identical electrical specs but slower response (~1 ns vs sub-1 ps) | Not suitable for high-frequency transient environments or automated SMT assembly | Choose only for legacy through-hole designs where rework or manual assembly is acceptable |
Compared with SMBJ8.0CA and 1.5KE8.0CA, the SMCJ8V0CA delivers superior thermal dissipation (RθJA = 55°C/W), faster response for high-edge-rate threats, and full SMT compatibility - making it optimal for new automotive and industrial designs requiring robust, automated, and scalable surge protection.
Availability
SMCJ8V0CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial I/O hardening, LED driver overvoltage clamping, and USB/RS-485 transceiver safeguarding requiring stable component supply across production lifecycles.
Supply support for SMCJ8V0CA 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 SMCJ series is part of TSC's high-reliability TVS portfolio engineered specifically for ISO 7637-2 and IEC 61000-4-x compliant transient suppression in harsh-environment electronics.
FAQ
What is the clamping voltage of SMCJ8V0CA at its rated peak pulse current?
The SMCJ8V0CA has a maximum clamping voltage (VC) of 13.6 V at 50 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value is guaranteed across temperature and ensures protected circuits remain below critical overvoltage thresholds during surge events. The SMCJ8V0CA maintains this clamping performance with minimal derating up to +125°C ambient.
Is SMCJ8V0CA unidirectional or bidirectional, and how is polarity marked?
The SMCJ8V0CA is a bidirectional TVS diode, indicated by the "CA" suffix per TSC's naming convention. Though it retains the cathode band marking typical of DO-214AB packaging, that marking is non-functional - both terminals behave identically under positive or negative transients. The SMCJ8V0CA provides symmetrical clamping above ±13.6 V without requiring orientation during placement.
Does SMCJ8V0CA meet automotive transient immunity standards?
Yes, the SMCJ8V0CA is explicitly rated to meet ISO 7637-2 for automotive applications, covering Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling). Its 1500 W peak power rating and sub-1 ps response time make it suitable for protecting 12 V vehicle networks against load dump and alternator ripple. The SMCJ8V0CA data sheet confirms compliance without external conditioning components.
What is the maximum steady-state power dissipation of SMCJ8V0CA at 25°C?
The SMCJ8V0CA has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, as specified in its Absolute Maximum Ratings table. This value reflects continuous DC or low-frequency power handling - distinct from its 1500 W peak pulse rating. Derating begins above 25°C per the published thermal curve (RθJA = 55°C/W), and the SMCJ8V0CA must be mounted on adequate copper area to sustain rated PD in real-world layouts.
How does SMCJ8V0CA compare to SMCJ8.0A in terms of electrical performance?
The SMCJ8V0CA is the bidirectional version, while SMCJ8.0A is unidirectional. Both share identical VWM (8.0 V), VBR (8.89–9.83 V), and VC (13.6 V) ratings, but the SMCJ8V0CA clamps symmetrically in both directions, whereas SMCJ8.0A only protects against reverse polarity transients. The SMCJ8V0CA's bidirectional behavior eliminates orientation concerns and simplifies layout - a key advantage in compact, high-density automotive and industrial PCBs where the SMCJ8V0CA is commonly deployed.
SMCJ8V0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- 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):
- 110.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ8V0CA FAQ
1.How can I place an order for SMCJ8V0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8V0CA 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 SMCJ8V0CA reliable?
The price and inventory of SMCJ8V0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8V0CA is usually 5 days.
3.What payment methods are accepted for SMCJ8V0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8V0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8V0CA?
SMCJ8V0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8V0CA 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 SMCJ8V0CA?
For technical support, including SMCJ8V0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8V0CA requirements.
6.How does Aetrix verify that SMCJ8V0CA is sourced from the original manufacturer or authorized distributors?
All SMCJ8V0CA 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 SMCJ8V0CA meets industry standards.
7.What is the process for return or replacement of SMCJ8V0CA?
All SMCJ8V0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8V0CA, 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 SMCJ8V0CA part is unused and in its original packaging.
Return procedure for SMCJ8V0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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