Overview
The SMAJ7.0CA-AT/TR13 is a Transient Voltage Suppressor (TVS) produced by YAGEO, designed to protect electronic circuits from voltage spikes and transient events. This component is part of the SMAJ-AT series, which is optimized for surface-mounted applications to minimize board space. The SMAJ7.0CA-AT/TR13 is a bidirectional TVS, offering protection in both directions of the circuit.
Key Specifications
| Parameter | Symbol | Value | Units |
|---|---|---|---|
| Reverse Stand-Off Voltage | VRWM | 7.0 | V |
| Breakdown Voltage @ IT | VBR | 7.78~8.60 | V |
| Test Current | IT | 10 | mA |
| Maximum Clamping Voltage @ IPP | VC | 12.0 | V |
| Peak Pulse Current @ IPP | IPP | 200 | A |
| Reverse Leakage @ VRWM | IR | 100 | μA |
| Peak Pulse Power Dissipation at 10/1000μs waveform | PPPM | 400 | Watts |
| Steady State Power Dissipation at TA=50℃ | PM(AV) | 3.3 | Watts |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 to +150 | ℃ |
| Typical Thermal Resistance Junction to Lead | RθJL | 30 | ℃/W |
| Typical Thermal Resistance Junction to Ambient | RθJA | 120 | ℃/W |
Key Features
- Low profile package (JEDEC DO-214AC) to optimize board space.
- Glass passivated junction for enhanced reliability.
- Low inductance design.
- Excellent clamping capability with 400W peak pulse power at 10/1000μs waveform.
- Fast response time to transient events.
- Typical IR less than 1μA above 10V.
- High temperature soldering capability: 260℃/10 seconds at terminals.
- Plastic package with Underwriters Laboratory flammability rating 94V-0.
- Meets MSL level 1, per J-STD-020.
- Safety certification: UL: E244458.
- AEC-Q101 qualified for automotive applications.
- Compliant with IEC61000-4-2 ESD 30KV Air, 30KV contact.
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 SMAJ7.0CA-AT/TR13?
The primary function is to protect electronic circuits from transient voltage spikes and surges.
- What is the reverse stand-off voltage of the SMAJ7.0CA-AT/TR13?
The reverse stand-off voltage is 7.0V.
- What is the peak pulse power dissipation capability of this TVS?
The peak pulse power dissipation is 400W at a 10/1000μs waveform.
- 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 SMAJ7.0CA-AT/TR13 suitable for automotive applications?
Yes, it is AEC-Q101 qualified.
- What is the typical thermal resistance junction to ambient for this TVS?
The typical thermal resistance junction to ambient is 120℃/W.
- What are the recommended soldering conditions for this component?
The recommended soldering conditions include a peak temperature of 260℃ for 20-40 seconds and a ramp-up rate of 3℃/second max.
- Does the SMAJ7.0CA-AT/TR13 meet any specific safety certifications?
Yes, it has UL safety certification (E244458) and meets MSL level 1 per J-STD-020.
- What is the package type and dimensions of the SMAJ7.0CA-AT/TR13?
The package type is JEDEC DO-214AC with dimensions specified in the datasheet.
- Is the SMAJ7.0CA-AT/TR13 bidirectional or unidirectional?
The SMAJ7.0CA-AT/TR13 is a bidirectional TVS.
