Overview
The SMCJ18CA/TR7 is a Transient Voltage Suppressor (TVS) diode produced by YAGEO, designed for surface mount applications to optimize board space. This component is part of the SMCJ-AT series, which features a low profile package and built-in strain relief, making it suitable for various circuit protection needs.
The SMCJ18CA/TR7 is AEC-Q101 qualified and meets several safety and compliance standards, including UL and IEC61000-4-2 ESD compliance. It is also RoHS compliant, ensuring environmental sustainability.
Key Specifications
| Rating | Symbol | Value | Units |
|---|---|---|---|
| Peak Pulse Power Dissipation at 10/1000μs Waveform | PPPM | Minimum 1500 | Watts |
| Peak Pulse Current at 10/1000μs Waveform | IPPM | See Table | Amps |
| Steady State Power Dissipation at TA=50℃ | PM(AV) | 6.5 | Watts |
| Peak Forward Surge Current, 8.3ms Single Half Sine-Wave | IFSM | 200 | Amps |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 to +150 | ℃ |
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | ℃/W |
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | ℃/W |
| Reverse Stand-Off Voltage (VRWM) | VRWM | 18 | V |
| Breakdown Voltage (VBR) at IT=1mA | VBR | 20.0~22.0 | V |
| Maximum Clamping Voltage (VC) at IPP=51.4A | VC | 29.2 | V |
| Reverse Leakage Current at VRWM=18V | IR | 1μA | μA |
Key Features
- Low profile package (DO-214AB) to optimize board space
- Built-in strain relief for enhanced durability
- Glass passivated junction for reliable performance
- Low inductance and excellent clamping capability
- 1500W peak pulse power capability at 10/1000μs waveform
- Fast response time and typical IR less than 1μA above 10V
- High temperature soldering: 260℃/10 seconds at terminals
- Plastic package with UL flammability 94V-0 rating
- Meets MSL level 1, per J-STD-020
- AEC-Q101 qualified and IEC61000-4-2 ESD 30KV Air, 30KV contact compliance
Applications
- I/O interface protection
- AC/DC power supply protection
- Low frequency signal transmission lines (e.g., RS232, RS485)
Q & A
- What is the peak pulse power dissipation of the SMCJ18CA/TR7?
The peak pulse power dissipation is a minimum of 1500 Watts at a 10/1000μs waveform.
- What is the maximum clamping voltage of the SMCJ18CA/TR7?
The maximum clamping voltage is 29.2V at a peak pulse current of 51.4A.
- What are the operating junction and storage temperature ranges for this component?
The operating junction and storage temperature range is -55 to +150℃.
- Is the SMCJ18CA/TR7 RoHS compliant?
- What is the typical thermal resistance junction to ambient for this component?
The typical thermal resistance junction to ambient is 75℃/W.
- What are the recommended soldering conditions for the SMCJ18CA/TR7?
The recommended soldering conditions include a peak temperature of 260℃, with a ramp-up rate of 3℃/second max, and a ramp-down rate of 6℃/second max.
- What safety certifications does the SMCJ18CA/TR7 meet?
The component meets UL and IEC61000-4-2 ESD compliance, and is AEC-Q101 qualified.
- What is the package type and dimensions of the SMCJ18CA/TR7?
The package type is DO-214AB, with dimensions specified in the datasheet.
- What are the typical applications of the SMCJ18CA/TR7?
- How is the polarity indicated on the SMCJ18CA/TR7?
