Overview
The SMAJ28A/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by YAGEO. This component is designed to protect electronic circuits from voltage spikes and transients, ensuring the reliability and longevity of the system. The SMAJ series is particularly suited for surface-mounted applications, optimizing board space with its low-profile package.
Key Specifications
| Parameter | Symbol | Value | Units |
|---|---|---|---|
| Reverse Stand-Off Voltage | VRWM | 28.0 | V |
| Breakdown Voltage @ IT | VBR | 31.10~34.40 | V |
| Test Current | IT | 1 | mA |
| Maximum Clamping Voltage @ IPP | VC | 45.4 | V |
| Peak Pulse Current @ IPP | IPP | 9.5 | A |
| Reverse Leakage @ VRWM | IR | 1 | μA |
| Peak Pulse Power Dissipation at 10/1000μs waveform | PPPM | Minimum 400 | Watts |
| 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 |
Key Features
- Low profile package (DO-214AC/SMA)
- Glass passivated junction for high reliability
- Low inductance design
- Tin plated terminals, solderable per MIL-STD-750, Method 2026
- Pb-Free assembly compatible
- Color band denotes cathode (except for bi-directional models)
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 SMAJ28A/TR13?
The primary function of the SMAJ28A/TR13 is to protect electronic circuits from voltage spikes and transients.
- What is the reverse stand-off voltage of the SMAJ28A/TR13?
The reverse stand-off voltage (VRWM) is 28.0 V.
- What is the breakdown voltage range for the SMAJ28A/TR13?
The breakdown voltage (VBR) range is 31.10 to 34.40 V.
- What is the maximum clamping voltage of the SMAJ28A/TR13?
The maximum clamping voltage (VC) is 45.4 V.
- What is the peak pulse current rating for the SMAJ28A/TR13?
The peak pulse current (IPP) is 9.5 A.
- What are the operating temperature ranges for the SMAJ28A/TR13?
The operating junction and storage temperature range is -55 to +150 ℃.
- Is the SMAJ28A/TR13 Pb-Free?
- What is the typical thermal resistance junction to ambient for the SMAJ28A/TR13?
The typical thermal resistance junction to ambient (RθJA) is 120 ℃/W.
- What are some common applications for the SMAJ28A/TR13?
- How is the SMAJ28A/TR13 packaged?
The SMAJ28A/TR13 is available in 7-inch and 13-inch reel packages, denoted by the suffixes /TR7 and /TR13 respectively.
