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Taiwan Semiconductor Corporation SMCJ7.0CH
- Part No.:
- SMCJ7.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0CH.pdf
- Description:
- 1500W, 8.6V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,170
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Product details
Overview
SMCJ7.0CH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 7.78V min / 9.51V max breakdown voltage, 10V working stand-off voltage, and 13.3V clamping voltage at 200A peak pulse current. It protects automotive and industrial power rails against ESD, load dump, and ISO 7637-2 transients.
For engineers reviewing the SMCJ7.0CH datasheet, SMCJ7.0CH pinout, SMCJ7.0CH application, or SMCJ7.0CH equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance values, and direct alternatives for automotive-grade surge protection design.
Technical Context
The SMCJ7.0CH is a glass-passivated, unidirectional/bidirectional TVS diode optimized for fast transient suppression with sub-1ps response time and <1μA reverse leakage above 10V. Its junction-to-case thermal resistance is 10°C/W, enabling robust 1500W peak pulse handling under 1ms pulses per Fig.5 waveform.
Designed for bidirectional use (denoted by "CH" suffix), it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements and operates across -55°C to +150°C junction temperature range. The device uses a single-die configuration in UL 94V-0 molded DO-214AB package with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.78V / 9.51V - Ensures reliable conduction onset above 10V system rail while avoiding false triggering |
| VWM | 10V - Matches nominal 12V automotive supply with 20% margin before clamping begins |
| VC@IPPM | 13.3V @ 200A - Limits downstream voltage stress to safe levels during 1ms transients |
| PPK | 1500W - Handles high-energy surges such as ISO 7637-2 Pulse 1 (inductive switch-off) |
| IR@VWM | <1μA - Minimizes standby power loss and avoids interference with low-current sensor circuits |
| TJ max | +150°C - Supports under-hood deployment without derating in engine control units |
| RθJC | 10°C/W - Enables effective heat transfer to PCB copper when mounted with thermal pad |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Reversible polarity terminals | Identical electrical behavior in both directions; no orientation required during placement |
| Case | Non-electrical mechanical body | UL 94V-0 molded compound; provides insulation and mechanical stability on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test conditions including temperature cycling, HTRB, and ESD |
| ISO 7637-2 compliance | Guarantees immunity to standardized vehicle-level transients (Pulse 1, 2a, 2b, 3a, 3b) |
| Glass passivated junction | Enhances long-term reliability and moisture resistance in harsh under-hood environments |
| Fast response time <1ps | Clamps transients before sensitive ICs experience overvoltage damage |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus and 12V power inputs in door modules and lighting controllers from load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching MCU and transceivers. Use Value: Maintains VC ≤13.3V during 200A transients, ensuring downstream 16V-rated components remain within safe operating area. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage protection element on 24V DC input terminals, coordinated with series impedance. Use Value: Withstands repeated 1500W pulses without degradation, supporting >100,000 surge events per MIL-STD-883H Class H lifetime spec. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Front-end protection for AC/DC adapters and PoE injectors subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor on secondary-side 12V/24V distribution rails. Use Value: Clamps 10/1000μs transients to 13.3V while maintaining <1μA leakage-critical for low-power standby modes. | Use Scenario: Shielding microcontroller power pins in washing machine motor control boards from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS adjacent to MCU VDD pins to suppress fast-rising inductive kickback. Use Value: Sub-1ps response ensures clamping activation before 5V rail exceeds absolute maximum rating of embedded flash memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | 600W peak power rating, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 | Select when board space is constrained and surge energy does not exceed 600W |
| 1.5KE7.0CA | Through-hole TO-218 package, 1500W rating, slower response (~1ns) | Requires wave soldering; incompatible with fully SMT production | Choose for legacy designs or where manual repair access is prioritized over automated assembly |
Compared with SMCJ7.0CH, SMBJ7.0CA offers reduced surge capacity and thermal performance in a smaller package, while 1.5KE7.0CA matches power rating but sacrifices SMT compatibility and speed-making SMCJ7.0CH optimal for AEC-Q101-compliant, high-volume automotive SMT lines.
Availability
SMCJ7.0CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and telecom power supply inputs requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ7.0CH 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, specializing in TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The SMCJ series was developed specifically for AEC-Q101-compliant, high-power transient suppression in 12V/24V automotive systems, with emphasis on ISO 7637-2 immunity, thermal robustness, and SMT manufacturability.
FAQ
What does the "CH" suffix indicate in SMCJ7.0CH?
The "CH" suffix denotes bidirectional configuration-meaning the SMCJ7.0CH functions identically in both polarities, with symmetric breakdown and clamping characteristics. This eliminates polarity marking requirements during PCB layout and assembly, simplifying design for differential or AC-coupled signal lines and dual-rail power domains where transient direction is unpredictable.
Is SMCJ7.0CH compliant with AEC-Q101 and ISO 7637-2?
Yes, SMCJ7.0CH is explicitly AEC-Q101 qualified and certified to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity standards. These qualifications are documented in Taiwan Semiconductor's official A2102 datasheet revision and confirmed via third-party test reports available upon request for automotive program validation.
What is the maximum clamping voltage of SMCJ7.0CH and at what current is it specified?
The maximum clamping voltage of SMCJ7.0CH is 13.3V, measured at 200A peak pulse current (IPPM) under the 10/1000μs waveform defined in Fig.5 of the datasheet. This value is guaranteed across the full operating temperature range (-55°C to +150°C) and ensures downstream 16V-rated components remain within safe operating limits during worst-case transients.
Can SMCJ7.0CH replace unidirectional SMCJ7.0H in an existing design?
No-SMCJ7.0CH cannot directly replace unidirectional SMCJ7.0H without circuit review. While both share identical VBR, VWM, and VC specs, the CH version lacks polarity marking and conducts in both directions. Using it in place of a unidirectional part may cause unintended conduction paths in DC-biased circuits, especially where reverse blocking is required for signal integrity or power sequencing.
What is the thermal resistance profile of SMCJ7.0CH and how does it affect PCB layout?
SMCJ7.0CH has RθJC = 10°C/W and RθJA = 55°C/W. To maintain TJ ≤150°C during repetitive 1500W pulses, the PCB must provide ≥40mm² of 2oz copper connected to both terminals. Thermal vias under the pad and internal ground/power planes significantly reduce effective RθJA; insufficient copper will cause premature thermal shutdown or parametric shift in clamping performance.
SMCJ7.0CH 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 118A
- 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)
SMCJ7.0CH FAQ
1.How can I place an order for SMCJ7.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0CH 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 SMCJ7.0CH reliable?
The price and inventory of SMCJ7.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.0CH is usually 5 days.
3.What payment methods are accepted for SMCJ7.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0CH?
SMCJ7.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0CH 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 SMCJ7.0CH?
For technical support, including SMCJ7.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0CH requirements.
6.How does Aetrix verify that SMCJ7.0CH is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0CH 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 SMCJ7.0CH meets industry standards.
7.What is the process for return or replacement of SMCJ7.0CH?
All SMCJ7.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0CH, 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 SMCJ7.0CH part is unused and in its original packaging.
Return procedure for SMCJ7.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0CH Tags
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