Overview
The SMBJ18CA/TR7 is a transient voltage suppressor (TVS) produced by YAGEO, designed for surface-mounted applications to optimize board space. This component is part of the SMBJ series, which is known for its low profile package and built-in strain relief. The SMBJ18CA/TR7 is specifically a bidirectional TVS, offering protection against both positive and negative voltage transients.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Reverse Stand-Off Voltage (VRWM) | 18.0 | V |
| Breakdown Voltage (VBR) @ IT Test Current | 20.0 - 22.0 | V |
| Test Current (IT) | 1 | mA |
| Maximum Clamping Voltage (VC) @ IPP | 32.4 | V |
| Peak Pulse Current (IPP) | 18.6 | A |
| Reverse Leakage Current (IR) @ VRWM | 1 | μA |
| Peak Pulse Power Dissipation at 10/1000μs Waveform | 600 | Watts |
| Operating Junction and Storage Temperature Range | -55 to +150 | °C |
| Typical Thermal Resistance Junction to Lead (RθJL) | 20 | °C/W |
| Typical Thermal Resistance Junction to Ambient (RθJA) | 100 | °C/W |
| Package Type | DO-214AA (SMB) | |
| Safety Certification | UL, IEC61000-4-2 ESD 30KV Air, 30KV contact compliance |
Key Features
- Low profile package to optimize board space
- Built-in strain relief for enhanced durability
- Glass passivated junction for reliable performance
- Low inductance and excellent clamping capability
- 600W peak pulse power capability at 10/1000μs waveform
- Fast response time and typical IR less than 1μA above 10V
- High temperature soldering: 260°C/10 seconds at terminals
- Plastic package with Underwriters Laboratory flammability 94V-0
- Meets MSL level 1, per J-STD-020
Applications
- I/O interface protection
- AC/DC power supply protection
- Low frequency signal transmission lines (e.g., RS232, RS485)
Q & A
- What is the primary function of the SMBJ18CA/TR7?
The SMBJ18CA/TR7 is a transient voltage suppressor designed to protect electronic circuits from voltage spikes and transients.
- What is the reverse stand-off voltage (VRWM) of the SMBJ18CA/TR7?
The reverse stand-off voltage (VRWM) is 18.0V.
- What is the breakdown voltage (VBR) range for the SMBJ18CA/TR7?
The breakdown voltage (VBR) range is 20.0 to 22.0V.
- What is the peak pulse power dissipation capability of the SMBJ18CA/TR7?
The peak pulse power dissipation capability is 600W at a 10/1000μs waveform.
- What are the operating and storage temperature ranges for the SMBJ18CA/TR7?
The operating and storage temperature ranges are -55 to +150°C.
- Is the SMBJ18CA/TR7 RoHS compliant and halogen-free?
- What safety certifications does the SMBJ18CA/TR7 have?
The SMBJ18CA/TR7 has UL and IEC61000-4-2 ESD 30KV Air, 30KV contact compliance certifications.
- What is the typical thermal resistance junction to ambient (RθJA) for the SMBJ18CA/TR7?
The typical thermal resistance junction to ambient (RθJA) is 100°C/W.
- What package type does the SMBJ18CA/TR7 use?
The SMBJ18CA/TR7 uses the DO-214AA (SMB) package type.
- What are some common applications for the SMBJ18CA/TR7?
