Overview
The SMAJ48CA/TR7 is a Transient Voltage Suppressor (TVS) diode produced by YAGEO, designed for surface-mounted applications to optimize board space. This component is part of the SMAJ series, which offers robust protection against voltage transients and electrostatic discharges (ESD). The SMAJ48CA/TR7 is particularly suited for applications requiring high reliability and compact design.
Key Specifications
| Rating | Symbol | Value | Units |
|---|---|---|---|
| Peak Pulse Power Dissipation at 10/1000μs waveform | PPPM | Minimum 400 | Watts |
| Peak Pulse Current at 10/1000μs waveform | IPPM | See Table | Amps |
| Steady State Power Dissipation at TA=50℃ | PM(AV) | 3.3 | Watts |
| Peak Forward Surge Current, 8.3ms single half sine-wave | IFSM | 40 | Amps |
| 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 |
| Reverse Stand-Off Voltage (VRWM) | VRWM | 48.0 | V |
| Breakdown Voltage (VBR) | VBR | 53.30~58.90 | V |
| Maximum Clamping Voltage @IPP | VC | 77.4 | V |
| Peak Pulse Current @IPP | IPP | 5.2 | A |
| Reverse Leakage @VRWM | IR | 1 | μA |
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 dissipation at 10/1000μs waveform.
- Fast response time to transient voltages.
- Typical IR less than 1μA above 10V.
- High Temperature soldering: 260℃/10 seconds at terminals.
- Plastic package with Underwriters Laboratory flammability 94V-0.
- Meets MSL level 1, per J-STD-020.
- Safety certification: UL 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 SMAJ48CA/TR7? The peak pulse power dissipation is a minimum of 400 Watts at a 10/1000μs waveform.
- What is the operating junction and storage temperature range for this component? The operating junction and storage temperature range is -55 to +150℃.
- What is the typical thermal resistance junction to ambient for the SMAJ48CA/TR7? The typical thermal resistance junction to ambient is 120℃/W.
- What are the dimensions of the SMAJ48CA/TR7 package? The package dimensions are in accordance with JEDEC DO-214AC, with specific measurements provided in the datasheet.
- What is the reverse stand-off voltage (VRWM) for the SMAJ48CA/TR7? The reverse stand-off voltage (VRWM) is 48.0 V.
- What is the breakdown voltage (VBR) range for this component? The breakdown voltage (VBR) range is 53.30~58.90 V.
- What is the maximum clamping voltage @IPP for the SMAJ48CA/TR7? The maximum clamping voltage @IPP is 77.4 V.
- Does the SMAJ48CA/TR7 meet any specific safety certifications? Yes, it meets UL and IEC61000-4-2 ESD 30KV Air, 30KV contact compliance.
- What is the typical reverse leakage current @VRWM for this component? The typical reverse leakage current @VRWM is less than 1 μA.
- How is the SMAJ48CA/TR7 packaged? It is packaged in 12mm tape (EIA STD RS-481) and available in 7-inch and 13-inch reel packages.
