CTB24-800B Crydom - TRIAC

CTB24-800B Description

The CTB24-800B is a solid state relay made by Crydom. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

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Summary of Features

Target Applications

Crydom CTB24-800B is used for AC switching and phase control in heaters, lighting dimmers, motor speed control, appliances and solid state relays.

Key Specifications

Crydom CTB24-800B is a 25 A, 800 V TRIAC in a TO-220AB non-isolated package, standard (4 quadrants) type. Source: Crydom CTA/CTB24 TRIAC datasheet. Values at 25°C unless noted.

Parameter	Value
RMS on-state current (full sine wave)	25 A (Tc = 100°C)
Repetitive peak off-state voltage (VDRM/VRRM)	800 V
Type	Standard (4 quadrants)
Gate trigger current IGT (max, VD = 12 V)	50 mA (QI-III), 100 mA (QIV)
Gate trigger voltage VGT (max)	1.3 V
Holding current IH (max)	80 mA
Critical rate of rise of off-state voltage dv/dt (min, Tj = 125°C)	500 V/µs
Non-repetitive surge peak on-state current	250 A (50 Hz) / 260 A (60 Hz)
I²t for fusing (10 ms)	340 A²s
On-state voltage VT (max)	1.55 V @ ITM = 35 A
Thermal resistance junction to case	0.8 °C/W
Operating junction temperature	-40 to 125°C
Package	TO-220AB non-isolated

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