For Immediate Release

For Details, Contact:
Derek Brooke
Prem Magnetics
Phone: 815-385-2700

New Switchmode Transformers for
AC to DC Converter Applications.

Prem Magnetics, Inc. has introduced a new printed circuit mount transformer for AC to DC Converter
applications. The SPP-3004 is designed for use in conjunction with the TNY254 TinySwitch™ integrated
off-line switching power supply chip from Power Integrations, Incorporated.

Possible applications include inputs of 85 to 265 Vac and 2 DC outputs ranging from 6.0 Vdc up to 10.0
Vdc, or 1 DC output ranging from 12.0 Vdc up to 24.0 Vdc at a maximum power of 4.0 W.

The SPP-3004 is designed to meet the creepage and clearance distance minimums of the IEC 950
EN60950 standard for reinforced insulation at rated working voltages on the input up to 250 Vrms. The
dielectric strength (HIPOT) is rated at 4,000 Vrms, and the bobbin material is classified UL 94V-0. The
dimensions for the SPP-3004 are 0.717” (18.20 mm) Length by 0.630” (16.00 mm) Width by 0.697”
(17.70 mm) Height.

All Prem standard transformers are 100% final tested prior to shipment. Pricing for the SPP-3004 is as
low as $1.05 each in production quantities. For further information, contact Derek Brooke at Prem
Magnetics, Inc. at 815-385-2700 or by fax at 815-385-8578. Email: sales@premmagnetics.com. Or visit
Prem’s interactive website: www.premmagnetics.com. PREM MAGNETICS, INC., 3521 Chapel
Hill Road, Johnsburg, IL 60051

For immediate online information: http://www.premmagnetics.com/SPP-3004.htm

3521 North Chapel Road, Johnsburg, Illinois 60050 • Phone: 815-385-2700 • Fax: 815-385-8578
Email: sales@premmagnetics.com • Web: www.PremMagnetics.com