B674-2T Crydom - Power Transistor Module

B674-2T Description

The B674-2T is a solid state relay made by Crydom. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.

Need the B674-2T? USComponent stocks and sources power modules for repair shops, OEMs and maintenance teams worldwide. Request a quote and we'll confirm availability and lead time. Always compare against the datasheet before ordering.

Summary of Features

Target Applications

Crydom B674-2T is used for AC/DC power conversion and control: controlled rectifiers, DC motor drives, heater and power control, battery chargers and power supplies.

Key Specifications

Crydom B674-2T is a B-2T Series power module (B6, 42.5 A), circuit type 7, 480 VAC line, standard case, for AC or DC variable voltage output. Source: Crydom B-2T, B-2 Series datasheet (Rev 121411). Values at 25°C unless noted.

Parameter	Value
Maximum DC output current (Tc = 85°C)	42.5 A
AC line input voltage	480 Vrms (1200 VRRM)
Circuit type	7 (see datasheet schematic)
Maximum voltage drop (VF)	1.65 V @ 42.5 A
Maximum non-repetitive surge current (1/2 cycle, 60 Hz)	600 A
Maximum I²t for fusing (8.3 ms)	1500 A²s
Critical rate of rise of on-state current (Tj = 125°C)	100 A/µs
Critical rate of rise of off-state voltage	500 V/µs
Gate trigger current / voltage (25°C)	80 mA / 3.0 V
Average gate power	0.5 W
Maximum peak reverse gate voltage	5.0 V
Maximum thermal resistance, junction to ceramic base per chip	0.7 °C/W
Operating junction temperature	-40 to 125°C
Isolation voltage	2500 Vrms
Weight (typical)	1.5 oz (42.5 g)

Technical document (PDF)  |  Request a quote for B674-2T (reply within 24 hours)