BT258S-800LT
SCR logic level, high temperature
12 October 2016 Product data sheet
1. General description
Passivated sensitive gate Silicon Controlled Rectifier (SCR) in a SOT428 (DPAK) surface
mountable plastic package intended for use in applications requiring high bidirectional blocking
voltage capability and high thermal cycling performance. These devices are intended to be
interfaced directly to microcontrollers, logic integrated circuits and other low power gate trigger
circuits.
2. Features and benefits
• Direct interfacing with low power drivers and microcontrollers
• High bidirectional blocking voltage capability
• High junction operating temperature capability
• High thermal cycling performance
• Planar passivated for voltage ruggedness and reliability
• Surface mountable package
• Very sensitive gate for logic level controls
3. Applications
• General purpose switching and phase control
• Ignition circuits, CDI for 2- and 3-wheelers
• Motor control - e.g. small kitchen appliances
• Protection circuits for Switched-Mode Power Supplies (SMPS)
• Protection circuits in lighting ballasts
4. Quick reference data
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
V
DRM
repetitive peak off-
state voltage
- - 800 V
V
RRM
repetitive peak reverse
voltage
- - 800 V
half sine wave; T
j(init)
= 25 °C;
t
p
= 10 ms; Fig. 4; Fig. 5
- - 75 AI
TSM
non-repetitive peak on-
state current
half sine wave; T
j(init)
= 25 °C;
t
p
= 8.3 ms
- - 82 A
T
j
junction temperature [1] - - 150 °C
I
T(AV)
average on-state
current
half sine wave; T
mb
≤ 135 °C; Fig. 1 - - 5 A
