B552-2 Crydom - Power Transistor Module
B552-2 Description
The B552-2 from Crydom is a solid state relay. Solid state relays like this switch heaters, motors, lamps and other loads quietly and without contact wear.
USComponent has been supplying power semiconductors since 2001, including discontinued and hard-to-find part numbers. Send us an RFQ for the B552-2 and we will reply with price, condition and lead time. Please check the manufacturer's datasheet to confirm ratings, package and pin-out before you order.
Summary of Features
Crydom B552-2 is a B-2 Series power module (B5, 25 A), circuit type 5, 240 VAC line, case with isolation barriers, for AC or DC variable voltage output.
Target Applications
Crydom B552-2 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 B552-2 is a B-2 Series power module (B5, 25 A), circuit type 5, 240 VAC line, case with isolation barriers, 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) | 25 A |
| AC line input voltage | 240 Vrms (600 VRRM) |
| Circuit type | 5 (see datasheet schematic) |
| Maximum voltage drop (VF) | 1.65 V @ 25 A |
| Maximum non-repetitive surge current (1/2 cycle, 60 Hz) | 250 A |
| Maximum I²t for fusing (8.3 ms) | 260 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) | 60 mA / 2.5 V |
| Average gate power | 0.5 W |
| Maximum peak reverse gate voltage | 5.0 V |
| Maximum thermal resistance, junction to ceramic base per chip | 0.9 °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 B552-2 (reply within 24 hours)

