With current ratings from 20A to 30A, the square, ceramic surface-mountable 3812-size SMM Series medium-blow fuses carry voltage ratings up to 250 Vac and 65 Vdc. RoHs-compliant, they are reliably resistant to chemical solvents and aqueous cleaning. Other features include an operating temperature range from -55°C to +85°C with proper derating and an opening time of four hours minimum at 100% current rating or 60 seconds maximum at 200%. Price ranges from $0.25 to $0.40 each. BEL FUSE INC., Jersey City, NJ. (201) 432-0463.