SV6050xAx SCR Discrete Thyristor Series AEC-Q101 Qualified, 50 A High Junction Temperature
Description:
The SVxx50xAx series are AEC-Q101 qualified SCRs especially designed for automotive industry applications. This SCR thyristors series offers 600 V peak off-state voltage, and the rated gate trigger current range is 6 mA up to a maximum of 15 mA. The thyristors are available in both through hole and SMD type packages, a notch on one pin indicates the package is non-isolated.
Benefits_
- Good thermal performance
- Enable high temperature
operation @ 50 A - Prevents false-triggering caused
by electrical fast transient across
terminals in AC mains - High inrush current capability
Features:
- Innovative clip die-attach assembly
- Maximum Junction Temperature: TJ = 150º C
- dv/dt noise immunity up to 1000 V/µs
- di/dt capability up to 100 A/µs
Markets/Applications:
- Rectifier and voltage regulator
- AC solid-state switch
- Inrush current limit circuit
Overvoltage crowbar protection
This SV6050xAx high temperature SCR series is ideal for unidirectional switch applications such as phase controls, motor speed controls, Solid State Relays, and inrush current controllers.
Standard phase control SCRs are triggered with few milliamperes of current at less than 1.5 V potential.
The application of Thyristor helps discharge energy:
Power electronics make electric and hybrid vehicles safer for passengers in the event of a crash
High-voltage (HV) networks that are installed in electric or hybrid vehicles have a DC voltage of up to 500V or more and and High Voltage battery connected to them.
As a rule, there are also several HV function groups such as fuse boxes and power distribution units.
If a short circuit occurs these highvoltage networks potentially brings dangers to passengers.
Therefore it is needed to switch off the High Voltage Network and disconnecting the High Voltage battery from the High Voltage network in the case of a vehicle accident.
This a legal requirement for electric or hybrid vehicles.
To achieve this relays can switch off the High Voltage Network.
Also required by law HV networks should be discharged below a specific voltage of less than 60V within a few seconds.
Power electronics can control the discharge circuits.
Look on the circuit diagramm below.
Part of this is an filter capacitor connected in parallel between a high-voltage battery and an inverter.
The discharge circuit for the capacitor is connected in series with a resistor and a Littelfuse Thyristor.
This discharge circuit is used in the event of an accident or crash.
The discharge network is easily to controlled by a trigger signal.
Design Considerations:
Careful selection of the correct component for the parameters and environment will go a long way toward extending the operating life of the Thyristor. Good design practice should limit the
maximum continuous current through the main terminals to 75% of the component rating. Other ways to ensure long life for a power discrete semiconductor are proper heat sinking and selection
of voltage ratings for worst case conditions. Overheating, overvoltage (including dv/dt), and surge currents are the main killers of semiconductors. Correct mounting, soldering, and forming of the leads also help protect against component damage
For Datasheet and samples :
