Product Overview

The Model 04770x Series Common Mode Chokes are designed for broadband noise suppression, offering excellent attenuation for both symmetric and asymmetric noise. These chokes feature a compact size, glue-free construction, and a wide operating temperature range, making them suitable for demanding applications. They are compliant with EN 138100 standards and are RoHS compliant and halogen free. Ideal for use in frequency converters, wall boxes, power supplies, and drives and control circuits.

Product Attributes

• Brand: Bourns
• Construction: Glue-free
• Compliance: RoHS compliant*, Halogen free**
• Standards: Compliant with EN 138100

Technical Specifications

Additional Technical Data

Dimensions

22.86 0.50 (.900 .020)

3.5 0.50 (.138 .020)

15.24 0.50 (.600 .020)

36 (1.417) MAX.

40 (1.575) MAX.

38 (1.496) MAX.

22 (.866) MAX.

Schematic

Windings: 2

Terminals:

• AI, AII: Start of winding
• EI, EII: End of winding

Part Marking

CW/YY MODEL NUMBER MANUFACTURER CALENDAR WEEK (e.g., 047700)

Applications

• Frequency converters
• Wall boxes
• Power supplies
• Drives and control circuits

Solder Profile

Pb-Free Assembly

• Average ramp-up rate ~ 200 C/second
• Heating rate during preheat typical 1-2 /second max. 4 /second
• Final preheat temperature within 125 C of soldering temperature
• Peak temperature Tp 260 C
• Time within +0 C / -5 C of actual peak temperature 10 seconds
• Ramp-down rate 5 C/second max.

* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** Bourns considers a product to be halogen free if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.