Bel's MRT Microfuse Now UL Rated at 277 VAC; Devices Additionally Boast International Approvals From CSA, SEMKO and MITI.

Business Editors

JERSEY CITY, N.J.--(BUSINESS WIRE)--May 23, 2001

Bel Fuse Inc., a premier developer of fuses, LAN and telecom networking components, delay lines and thick film hybrids, has announced enhanced UL ratings for the Type MRT time-lag, radial lead, microfuse series.

The UL Component Recognition now rates the MRT at 277 VAC (80 mA to 6.3 A) with an interrupting (short circuit) rating of 100 Amps, making it an excellent choice for use in specific domestic lighting ballasts. Moreover, as the device is CSA certified, VDE/SEMKO approved to IEC 127-3/SS4, and carries the safety approval of MITI, designers may specify a single part number to satisfy the requirements of U.S., Asian and European markets.

With its enhanced UL rating, Bel's time-lag fuse is appropriate for use in wall-mount power supplies needed for cell phone battery chargers, as well as a wide range of board level, secondary circuit (primary circuits to 277 VAC max.) protection applications, including computer boards and audio/video circuits. The microfuse measures just 8.35 mm x 7.7 mm, and is provided in either long (18.8 mm) or short (4.3 mm) radial lead versions for maximum space saving, and design flexibility.

The MRT Series may be ordered in bulk (short lead version) or on tape in ammo packs. Prices start at 14 cents each in quantities of 5,000. Delivery is from stock to three weeks.

An industry leader in the design, engineering and manufacturing of magnetics, fuses, delay lines and thick film hybrids, Bel produces quality electronic components for the global market. Bel's products are widely specified for use in telecommunication and data communication (LAN/WAN) networks, computer and power supply applications, audio/visual equipment, consumer electronics, and home appliances worldwide.

Testifying to Bel's commitment to quality, all components are manufactured in ISO 9000-certified facilities in Hong Kong, Macau and China.

Except for historical information contained in this news release, the matters discussed (including information regarding the Type MRT Fuse Series) are forward-looking statements that involve risks and uncertainties. Among the factors that could cause actual results to differ materially are the following: the effect of business and economic conditions; the impact of competitive products and pricing; capacity and supply constraints or difficulties; product development, commercializing or technological difficulties; the regulatory and trade environment; and the risk factors reported from time to time in the company's Securities and Exchange Commission reports.