Description
These standard SCRs are suitable for applications where in-rush current conditions are critical, such as overvoltage crowbar protection circuits in power supplies, in-rush current limiting circuits, solid state relays (in back to back configuration), welding equipment, high power motor control circuits.
Features
- On-state rms current, IT(RMS): 40 A.
 
- Repetitive peak off-stat voltage, VDRM, VRRM:.
 
- 600 V.
 
- 800 V.
 
- Triggering gate current, IGT: 35 mA
November 2013
This is information on a product in full production. DocID6944 Rev 6
1/8
www. st. com
Characteristics
1
Characteristics
TYN640, TYN840
Table 2. Absolute ratings (limiting values)
Symbol
Parameter
Value
IT(RMS) IT(AV) ITSM
I²t dI/dt
IGM
On-state rms current (180° conduction angle)
Tc = 95 °C
Average on-st.