New Industry Products

CALEX Announces the SMT Series of DC/DC Converters

July 09, 2001 by Jeff Shepard

CALEX Mfg. Co. Inc. (Concord, CA) announced the new SMT Series of 1W and 3W single- and dual-output dc/dc converter families. All models come in a surface-mount package compatible with a CECC00802 reflow. The 1W single-output SMT Series offers 5Vdc and 12Vdc nominal outputs with 5Vdc, 9Vdc, 12Vdc and 15Vdc outputs. The 1W dual-output SMT Series offers 5Vdc and 12Vdc nominal inputs with +/-5Vdc, +/-9Vdc, +/-12Vdc and +/-15Vdc outputs. The input range for both the SMT 1W singles and duals is +/-10 percent.

The 1W SMT single- and dual-output converters are isolated from input to output with an isolation voltage of 1,000Vdc. CALEX claims that efficiencies run as high as 82 percent for the single-output versions and 80 percent for the dual-output models. The switching frequency is typically 100kHz. Line regulation is typically +/-1.2 percent and output noise is typically 60mV peak to peak. Load regulation varies by model, but is as low as five percent maximum for the 15Vdc single- and dual-output models. The operating temperature is -25 to 85 degrees C ambient. The package size for the 1W singles and duals is 0.31in x 0.6in x 0.27in.

The 3W single- and dual-output SMT models are housed in a 0.58in x 1.27in x 0.4in package. The 3W SMT Series offers nominal inputs of 12Vdc, 24Vdc and 48Vdc. The input range is 9 to 18, 18 to 36 and 36 to 75, respectively. Single-output options include 3.3Vdc, 5Vdc, 12Vdc and 15Vdc. Dual-output options are +/-5Vdc, +/-12Vdc and +/-15Vdc. The isolation voltage for the 3W SMT singles and duals is 1,500Vdc. CALEX cites efficiencies as high as 83 percent for the single-output 3W models, and 82 percent for the dual-output 3W models.

All of the new SMT models are available from stock. List price for the 1W single- and dual-output SMT models is $9.95 each. List price for the 3W single- and dual-output models is $19.95 each.