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Taiwan Semiconductor Corporation SMCJ100CAH
- Part No.:
- SMCJ100CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100CAH.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,715
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Product details
Overview
SMCJ100CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 100V working stand-off voltage (VWM), 111–123V breakdown voltage (VBR), and 162V maximum clamping voltage (VC) at 9.7A peak pulse current. It is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and ESD protection.
For engineers reviewing the SMCJ100CAH datasheet, SMCJ100CAH pinout, SMCJ100CAH application, or SMCJ100CAH equivalent, this device is selected for high-energy transient suppression in automotive power-line interfaces, industrial DC bus lines, and telecom surge protection where bidirectional clamping, sub-1ps response, and <1µA leakage above 10V are critical.
Technical Context
The SMCJ100CAH is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional transient suppression without polarity dependency. Its clamping action begins at VBR min = 111V and limits induced surges to ≤162V at IPPM = 9.7A under 10/1000µs waveform per IEC 61000-4-5 and ISO 7637-2.
It operates across –55°C to +150°C junction temperature range, features 10°C/W junction-to-case thermal resistance, and maintains <1µA reverse leakage at rated VWM = 100V - enabling low-power standby compatibility in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC bias margin in 12V/24V/48V systems. |
| VBR @ IT=1mA | 111–123 V - Breakdown voltage range at 1mA test current; ensures reliable turn-on during fast transients while avoiding false triggering. |
| VC @ IPPM | 162 V - Clamped voltage at 9.7A peak pulse current (10/1000µs); determines protected circuit's maximum overvoltage exposure. |
| PPK | 1500 W - Peak pulse power rating; supports single-event surge immunity up to ISO 7637-2 Pulse 5a (load dump). |
| IR @ VWM | <1 µA - Reverse leakage at 100V; enables minimal quiescent current draw in battery-backed or low-power monitoring circuits. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| Package | DO-214AB (SMC) - Surface-mount outline with 2.5mm lead pitch and 7.1mm x 6.2mm footprint; compatible with automated reflow assembly. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation renders polarity marking non-functional for circuit role).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | Both terminals serve as interchangeable surge conduction paths; no fixed anode/cathode function - enables placement without orientation check. |
| Case (exposed metal pad) | Thermal interface / mechanical anchor | Non-electrical; provides thermal dissipation path to PCB copper pour and mechanical stability during board flex or vibration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for engine control, body electronics, and ADAS power rails. |
| ISO 7637-2 compliance | Tested against Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (line impedance transients) - eliminates need for external test validation. |
| Glass-passivated junction | Enhances long-term stability of VBR and leakage under humidity and thermal stress - critical for 15+ year automotive service life. |
| Sub-1ps response time | Clamps transients within <1 picosecond from 0V to VBR min - protects sensitive CAN, LIN, and sensor ICs ahead of slower protection stages. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance for global OEMs. |
Applications
| Automotive Power Distribution | Industrial DC Bus Protection |
|---|---|
Use Scenario: 24V battery-fed ECUs exposed to load dump pulses up to 120V for 400ms per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers to limit input rail overshoot. Use Value: Clamps to 162V at 9.7A, limiting downstream voltage stress below 180V - sufficient to protect 200V-rated MOSFETs and 5V LDOs with margin. |
Use Scenario: 48V telecom rectifier output subjected to lightning-induced surges on outdoor cabinet feed lines. IC Role / Device Role / Timing Role: Bidirectional shunt protector on DC output bus, coordinated with upstream MOVs and gas discharge tubes. Use Value: Sub-1ps response captures initial surge edge before slower protectors activate, reducing total let-through energy by >30% vs. MOV-only designs. |
| Telecom Line Interface | Consumer Equipment AC/DC Input |
Use Scenario: Ethernet PoE++ (90W) switch port with integrated DC-DC conversion, vulnerable to ESD and cable-coupled transients. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated 54V secondary side, protecting DC-DC controller and sense resistors. Use Value: 1µA leakage at 100V prevents drift in precision current-sense amplifiers; bidirectional symmetry simplifies layout in full-bridge topologies. |
Use Scenario: USB-C PD charger front-end with active clamp flyback, requiring low-leakage transient suppression on 20V PPS output rail. IC Role / Device Role / Timing Role: Final-stage clamping device after bulk filtering and before connector, guarding against hot-plug transients. Use Value: 162V clamping voltage ensures protected 20V rail stays within ±10% tolerance during 1kV EFT bursts - preserving USB PD handshake integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Lower PPK = 600W; same VWM/VBR/VC specs but reduced surge handling; SMB package (smaller footprint, higher RθJA = 85°C/W). | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not ISO 7637-2 Pulse 5a load dump. | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE100CA | Through-hole TO-218 package; PPK = 1500W; identical VWM/VBR/VC but slower response (~1ns) and higher IR (5µA). | Requires manual or wave soldering; unsuitable for high-density SMT lines or vibration-prone mounting. | Choose only for legacy through-hole designs or where thermal mass from TO-218 improves sustained pulse handling in non-automated assemblies. |
Compared with SMBJ100CA and 1.5KE100CA, the SMCJ100CAH delivers automotive-grade surge immunity in a compact SMT package with best-in-class leakage and response speed - making it the preferred choice for new AEC-Q101-compliant designs requiring 1500W clamping in space-constrained layouts.
Availability
SMCJ100CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC bus protection, and telecom line interface applications requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for SMCJ100CAH 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 power devices since 1979.
The SMCJ series is part of TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for automotive and industrial environments demanding high-reliability, high-energy clamping in surface-mount form factors.
FAQ
What does the "CAH" suffix indicate in SMCJ100CAH?
The "CAH" suffix denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and halogen-free construction (H). Unlike unidirectional SMCJ100H variants, SMCJ100CAH provides symmetrical clamping in both polarities - eliminating polarity-aware routing and enabling use in AC-coupled or floating-bus applications without orientation constraints. This makes SMCJ100CAH ideal for differential signal lines and dual-rail power domains.
How does SMCJ100CAH differ from SMCJ100AH?
SMCJ100AH is unidirectional with a cathode band marking and forward voltage drop (~5.0V @ 100A), whereas SMCJ100CAH is bidirectional with no functional polarity marking and no defined forward voltage. The "C" in SMCJ100CAH enables clamping on both positive and negative transients, while SMCJ100AH only clamps reverse-polarity surges. For automotive CAN or LIN bus protection where transients may swing either polarity, SMCJ100CAH is required.
Is SMCJ100CAH suitable for ISO 7637-2 Pulse 5a (load dump) protection?
Yes - SMCJ100CAH is explicitly rated for ISO 7637-2 Pulse 5a with its 1500W peak pulse power and 162V clamping voltage at 9.7A. When used with appropriate series impedance (e.g., 10Ω inline resistor), it limits the 120V/400ms load dump transient to <180V on protected circuitry. Its 150°C TJ max and AEC-Q101 qualification further confirm suitability for under-hood automotive deployment.
What is the thermal performance of SMCJ100CAH in standard PCB layout?
With a junction-to-case thermal resistance (RθJC) of 10°C/W and typical RθJA of 55°C/W on 1-inch² 2oz copper, SMCJ100CAH can dissipate up to 5W continuously at 25°C ambient. In pulsed operation, its 1500W PPK rating assumes short-duration (≤1ms) events; sustained power must remain below derated PD limits shown in Fig.2 of the datasheet. Thermal relief pads and internal copper pours are recommended for high-reliability automotive use.
Does SMCJ100CAH meet moisture sensitivity requirements for lead-free reflow?
Yes - SMCJ100CAH is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH and requires no baking prior to lead-free reflow (peak 260°C). Its DO-214AB molding compound also meets UL 94V-0 flammability and passes JESD201 Class 2 whisker testing, ensuring robustness in automated SMT assembly lines.
SMCJ100CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ100CAH FAQ
1.How can I place an order for SMCJ100CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100CAH 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 SMCJ100CAH reliable?
The price and inventory of SMCJ100CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100CAH is usually 5 days.
3.What payment methods are accepted for SMCJ100CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100CAH?
SMCJ100CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100CAH 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 SMCJ100CAH?
For technical support, including SMCJ100CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100CAH requirements.
6.How does Aetrix verify that SMCJ100CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ100CAH 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 SMCJ100CAH meets industry standards.
7.What is the process for return or replacement of SMCJ100CAH?
All SMCJ100CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100CAH, 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 SMCJ100CAH part is unused and in its original packaging.
Return procedure for SMCJ100CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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