Overview
The SM6T18CAHM3/I is a surface-mount transient voltage suppressor (TVS) produced by Vishay General Semiconductor - Diodes Division. This component is part of the SM6T series, designed to protect sensitive electronics from voltage transients and electrostatic discharges. It is available in both unidirectional and bidirectional configurations, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (10/1000 μs) | 600 W | - |
| Stand-off Voltage (VWM) | 15.3 to 18.9 V | V |
| Breakdown Voltage (VBR) | 17.1 to 20.1 V | V |
| Leakage Current at 25 °C | 0.2 μA | A |
| Maximum Junction Temperature | 150 °C | °C |
| Power Dissipation on Infinite Heatsink | 5.0 W | W |
| Peak Pulse Current (10/1000 μs) | See datasheet for specific values | A |
| Package Type | SMB (DO-214AA) | - |
| Lead Finishing | Matte tin plated leads | - |
Key Features
- Low profile package ideal for automated placement.
- Glass passivated chip junction for reliability.
- Available in unidirectional and bidirectional configurations.
- High power capability with 600 W peak pulse power dissipation (10/1000 μs waveform).
- Excellent clamping capability and low inductance.
- Meets MSL level 1, per J-STD-020, with a maximum peak of 260 °C.
- AEC-Q101 qualified for automotive applications.
- Compliant with UL94 V-0 flammability rating and JESD 201 class 2 whisker test.
Applications
The SM6T18CAHM3/I is used in various applications to protect sensitive electronics against voltage transients and electrostatic discharges. These include:
- Protection of ICs, MOSFETs, and signal lines in consumer electronics.
- Industrial and automotive systems requiring surge protection.
- Telecommunication equipment and sensor units.
- High-end equipment and switch-mode power supplies (SMPS) where low leakage current and high junction temperature are critical.
Q & A
- What is the peak pulse power capability of the SM6T18CAHM3/I?
The SM6T18CAHM3/I has a peak pulse power capability of 600 W with a 10/1000 μs waveform. - What are the stand-off and breakdown voltage ranges for this component?
The stand-off voltage (VWM) ranges from 15.3 to 18.9 V, and the breakdown voltage (VBR) ranges from 17.1 to 20.1 V. - Is the SM6T18CAHM3/I available in both unidirectional and bidirectional configurations?
Yes, it is available in both unidirectional and bidirectional configurations. - What is the maximum junction temperature for this component?
The maximum junction temperature is 150 °C. - Does the SM6T18CAHM3/I meet any specific automotive standards?
Yes, it is AEC-Q101 qualified for automotive applications. - What is the package type and lead finishing of the SM6T18CAHM3/I?
The package type is SMB (DO-214AA), and the leads are matte tin plated. - What are some typical applications for the SM6T18CAHM3/I?
It is used in consumer electronics, industrial and automotive systems, telecommunication equipment, and high-end SMPS. - Does the SM6T18CAHM3/I comply with any specific flammability and whisker tests?
Yes, it complies with UL94 V-0 flammability rating and JESD 201 class 2 whisker test. - What is the power dissipation on an infinite heatsink for this component?
The power dissipation on an infinite heatsink is 5.0 W at TA = 50 °C. - Is the SM6T18CAHM3/I RoHS-compliant and halogen-free?
Yes, it is RoHS-compliant and halogen-free, denoted by the HM3 suffix.
