Overview
The SM15T12A-E3/9AT is a surface mount Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is part of the SM15T series, designed to provide protection against voltage transients in sensitive electronic circuits. It is ideal for use in various applications including consumer, computer, industrial, automotive, and telecommunication systems.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Peak Pulse Power Dissipation (10/1000 µs waveform) | PPPM | 1500 | W |
| Peak Pulse Current (10/1000 µs waveform) | IPPM | See specific device ratings | A |
| Breakdown Voltage (VBR) | VBR | 12.4 V (unidirectional), 12.4 V (bidirectional) | V |
| Forward Surge Current (10 ms single half sine-wave, unidirectional only) | IFSM | 200 A | A |
| Maximum Junction Temperature | TJ | 150 °C | °C |
| Package Type | - | DO-214AB (SMC) | - |
| Thermal Resistance (Junction to Ambient Air) | RθJA | 75 °C/W | °C/W |
| Thermal Resistance (Junction to Leads) | RθJL | 15 °C/W | °C/W |
Key Features
- Low profile package ideal for automated placement
- Glass passivated chip junction
- Available in unidirectional and bidirectional configurations
- 1500 W peak pulse power capability with a 10/1000 µs waveform
- Excellent clamping capability and low inductance
- Meets MSL level 1, per J-STD-020, with a maximum peak temperature of 260 °C
- AEC-Q101 qualified available
- RoHS-compliant and halogen-free options
- Molding compound meets UL 94 V-0 flammability rating
Applications
The SM15T12A-E3/9AT is used for protecting sensitive electronics against voltage transients induced by inductive load switching and lightning. It is suitable for various applications including:
- Consumer electronics
- Computer systems
- Industrial equipment
- Automotive systems
- Telecommunication devices
Q & A
- What is the peak pulse power dissipation of the SM15T12A-E3/9AT?
The peak pulse power dissipation is 1500 W with a 10/1000 µs waveform. - What are the available package types for this component?
The component is available in the DO-214AB (SMC) package type. - Is the SM15T12A-E3/9AT RoHS-compliant?
Yes, the component is RoHS-compliant. - What is the maximum junction temperature for this diode?
The maximum junction temperature is 150 °C. - Can the SM15T12A-E3/9AT be used in bidirectional applications?
Yes, for bidirectional applications, use the CA suffix (e.g., SM15T12CA). - What is the thermal resistance from junction to ambient air?
The thermal resistance from junction to ambient air is 75 °C/W. - Is the SM15T12A-E3/9AT AEC-Q101 qualified?
Yes, AEC-Q101 qualified versions are available. - What is the forward surge current rating for this diode?
The forward surge current rating is 200 A for a 10 ms single half sine-wave pulse. - What flammability rating does the molding compound meet?
The molding compound meets the UL 94 V-0 flammability rating. - What are the typical applications of the SM15T12A-E3/9AT?
Typical applications include protection of sensitive electronics in consumer, computer, industrial, automotive, and telecommunication systems.
