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Taiwan Semiconductor Corporation SMCJ8.0CH
- Part No.:
- SMCJ8.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0CH.pdf
- Description:
- 1500W, 9.9V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,701
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Product details
Overview
SMCJ8.0CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor in DO-214AB (SMC) package, with 8.0V working stand-off voltage, 8.89–10.9V breakdown voltage at 1mA test current, and 15.0V maximum clamping voltage at 50A peak impulse current. It protects automotive and industrial power rails against ESD, load dump, and lightning-induced transients.
For engineers reviewing the SMCJ8.0CH datasheet, SMCJ8.0CH pinout, SMCJ8.0CH application, or SMCJ8.0CH equivalent, key selection criteria include clamping ratio (VC/VWM = 1.88), AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and bidirectional capability enabled by CH suffix - critical for robust automotive signal line protection.
Technical Context
The SMCJ8.0CH uses a glass-passivated silicon junction to achieve fast response (<1.0 ps from 0 V to VBR min) and low leakage (<1 µA above 10 V). Its unidirectional configuration features a cathode band marking and supports peak forward surge current up to 200 A (8.3 ms half-sine).
Thermally, it delivers RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation from –55°C to +150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its molded DO-214AB case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.89–10.9 V @ 1 mA - Confirmed breakdown range ensuring predictable turn-on under surge |
| VC @ IPPM | 15.0 V @ 50 A - Clamping voltage limits downstream IC stress during 10/1000 µs transients |
| PPK | 1500 W - Peak pulse power handling per single 1 ms waveform, derated above 25°C |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and signal integrity in always-on circuits |
| TJ max | +150 °C - Enables placement near hot components in engine control units and power converters |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 0.210 g mass and matte tin-plated leads |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance; polarity indicated by band on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; completes conduction path during reverse-biased transient clamp |
| Cathode | High-side connection terminal | Connected to protected line (e.g., 12 V supply); marked with band; carries full surge current into ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| Fast response time | <1.0 ps rise to VBR ensures clamping initiates before sensitive logic or analog circuitry sustains damage |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach LDOs and microcontrollers. Use Value: 15.0 V clamping voltage prevents overvoltage damage to 16 V-rated input stages while maintaining <1 µA standby leakage. | Use Scenario: 4–20 mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection (enabled by CH suffix) across signal lines to absorb ESD and inductive kickback from solenoid drivers. Use Value: Symmetrical clamping in both directions ensures equal protection for positive/negative transients without polarity sensitivity. |
| Telecom DC Power Input | Consumer USB-C Power Delivery Port |
Use Scenario: -48 V telecom rectifier outputs subject to lightning-induced surges on outdoor plant equipment. IC Role / Device Role / Timing Role: Primary-level TVS on DC input bus, coordinated with upstream fuses and secondary-stage polymer PTCs. Use Value: 1500 W peak power rating handles multi-kA induced currents while maintaining thermal margin via 10°C/W junction-to-case resistance. | Use Scenario: USB-C PD port VBUS line in portable monitors requiring ±15 kV contact ESD immunity (IEC 61000-4-2). IC Role / Device Role / Timing Role: Fast-response TVS placed immediately after connector to shunt ESD energy before reaching buck controller and Type-C CC logic. Use Value: Sub-1 ps response time ensures clamping activation prior to 1 ns rise-time ESD events, limiting voltage overshoot to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | 600 W rating, SMB package (smaller footprint, higher RθJA = 85°C/W), bidirectional only | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and peak surge energy ≤600 W |
| TPSMD8.0A | 1500 W rating, same DO-214AB package, but AEC-Q101 not claimed; IR = 5 µA @ 8 V | Higher leakage may impact ultra-low-power sensor nodes; no automotive qualification documentation | Select for cost-sensitive industrial applications where AEC-Q101 is not mandated |
Compared with SMBJ8.0CA and TPSMD8.0A, the SMCJ8.0CH provides superior surge robustness (1500 W), automotive qualification, and lowest leakage-making it optimal for safety-critical 12 V rail protection where thermal margin and reliability are non-negotiable.
Availability
SMCJ8.0CH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power supplies, and consumer USB-C power delivery systems requiring stable component supply across extended production lifecycles.
Supply support for SMCJ8.0CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and communications markets since 1979.
The SMCJ series is part of TSC's AEC-Q101-qualified TVS portfolio designed specifically for harsh-environment transient suppression in 12 V/24 V automotive power networks and industrial I/O interfaces.
FAQ
What does the "CH" suffix indicate in SMCJ8.0CH?
The "CH" suffix in SMCJ8.0CH denotes a unidirectional TVS diode with cathode-band polarity marking and optimized for high-energy clamping in DC power line applications. Unlike "CAH" variants, SMCJ8.0CH is not bidirectional-it conducts only during reverse-biased surges, making it ideal for protecting grounded 12 V rails. This configuration ensures minimal leakage and precise clamping behavior consistent with the SMCJ8.0CH datasheet specifications.
Is SMCJ8.0CH AEC-Q101 qualified?
Yes, SMCJ8.0CH is explicitly AEC-Q101 qualified per the manufacturer's documentation, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per the AEC-Q101 standard. This qualification confirms its suitability for automotive powertrain and body electronics applications where reliability under thermal and electrical stress is mandatory-directly supporting design-in for SMCJ8.0CH in ECU and ADAS subsystems.
What is the maximum clamping voltage of SMCJ8.0CH at rated surge current?
The maximum clamping voltage of SMCJ8.0CH is 15.0 V at 50 A peak impulse current (IPPM), measured under the standardized 10/1000 µs double-exponential waveform. This value is confirmed in the Electrical Specifications table for SMCJ8.0H devices and defines the upper voltage limit imposed on protected circuitry during worst-case transients-critical for ensuring compatibility with 16 V-tolerant IC inputs in systems using SMCJ8.0CH.
Can SMCJ8.0CH be used in bidirectional signal line protection?
No, SMCJ8.0CH is a unidirectional TVS and must not be used for bidirectional signal line protection without external circuitry. For symmetrical transient suppression (e.g., RS-485, CAN), the SMCJ8.0CA variant is specified. Using SMCJ8.0CH on AC-coupled or floating lines risks forward conduction during negative excursions, potentially damaging downstream components. Always verify polarity alignment before placing SMCJ8.0CH in any design.
What is the thermal resistance from junction to ambient for SMCJ8.0CH?
The junction-to-ambient thermal resistance (RθJA) of SMCJ8.0CH is 55°C/W under standard JEDEC conditions (single device on 1-inch² FR-4 board with 2 oz copper). This value enables accurate thermal modeling when sizing PCB copper area or estimating power derating above 25°C ambient-essential for maintaining SMCJ8.0CH within its 150°C maximum junction temperature limit during repeated surge events.
SMCJ8.0CH 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:
- 15V
- Current - Peak Pulse (10/1000µs):
- 105A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ8.0CH FAQ
1.How can I place an order for SMCJ8.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0CH 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 SMCJ8.0CH reliable?
The price and inventory of SMCJ8.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0CH is usually 5 days.
3.What payment methods are accepted for SMCJ8.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0CH?
SMCJ8.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0CH 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 SMCJ8.0CH?
For technical support, including SMCJ8.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0CH requirements.
6.How does Aetrix verify that SMCJ8.0CH is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0CH 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 SMCJ8.0CH meets industry standards.
7.What is the process for return or replacement of SMCJ8.0CH?
All SMCJ8.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0CH, 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 SMCJ8.0CH part is unused and in its original packaging.
Return procedure for SMCJ8.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0CH Tags
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