AN1523 APPLICATION NOTE
ANNEX 2 - Switch Mode Transformer Specification (continued)
1.0 GENERAL INFORMATION
The magnetic circuit comprises two soft ferrite E-cores glued together and gapped on the central leg.
The windings are placed concentrically on single plastic bobbin made in self extinguish material.
The transformer comply with the standard (Refer to pharagraf “3.0 SAFETY”) for the component connected to the
the use of triple insulation wire (three different layers) for the secondary winding.
the thickness of insulation that exceed 0.40 mm.
the shape of coilformer that maintain the safety creeping distance from the core , that is consired
belong the primary side, and the secondary output pins and the circuit components.
Winding outputs are made through 8 pins placed in two parallel rows (Refer to page 6).
The transformer is designed for use in a switch mode flyback power supply.
1.2.1 Operating conditions
Operating ambient temperature:
Operating humidity range non condensing
0°C to +60°C
10% to 85%RH
Ambient temperature is the medium value measured at 30 mm. of distance from the surface of the transformer.
When the transformer is placed inside a metallic shield the above temperature value will be referred to the inside of
the shield even if it is closer then 30 mm to the SMT.
1.3 Storage conditions
-20°C to +50°C
After storage to allow a minimum of 24 hours recovery time before testing.
The component is marked with:
- Eldor part number and customer part number (if required).
- Production date.
The transformer weight is approx 15g.
SWITCH MODE TRANSFORMER SPECIFICATION
This document and its content are property of ELDOR CORPORATION S.p.A. No part of this document may be
DOC.N.reproduced, published, disclosed or used in any form with out written permission of ELDOR CORPORATION S.p.A.
PAG. 2 / 6