CLASS 2/3 TRANSFORMER
FS28-085-C2
Description:
The FS28-085-C2 is a series/parallel primary and dual secondary, split bobbin
design which operates with either a parallel input of 115V or a series input of 230V.
The secondaries are 14V @ 0.085A each. They can be used independently (up to
300V difference between them) or in series for double the voltage or in parallel for
double the current. The split bobbin design eliminates the need for costly
electrostatic shielding.
Electrical Specifications (@25C)
1. Maximum Power: 2.5VA
2. Primary: Series: 230V; Parallel: 115V
3. Secondaries: 14.0V @ 0.085A each
4. Voltage Regulation: 25% TYP @ full load to no load
5. Operating Temperature: -40C to 105C
6. Storage Temperature: -55C to 150C
7. Hipot tested 100% at 4200 VRMS pri to sec
8. Hipot tested 100% at 2160 VRMS sec to sec
9. Inherently Limited. No fusing required.
W
Construction:
Three flange bobbin construction with primaries and secondaries wound side by
side for low capacitive coupling. UL Class F Insulation System (155°C).
E
Agency File:
UL: File E65390, UL 5085-1 & 3 (1585), Class 2 not wet / Class 3 wet Transformer
cUL: File E65390, UL 5085-1 & 3 (1585) For Canadian Use (CSA 22.2, No.66.3-06)
TUV Certificate No.: R72120839, EN61558, Safety Isolating xfmr, general use
L
H
Max Dimensions:
H
W
1.260 1.201
Weight: 0.25 lbs
L
1.398
A
0.265
B
0.265
C
1.200
D
0.041
Units in inches.
E
0.020
F
0.236
1
2
3
4
D
F
A
8
Schematic:
PARALLEL
1
115V
50/60Hz
2
3
4
230V
50/60Hz
SERIES
1
2
3
4
4
1
5
14V @ 0.085A
2
3
6
7
14V @ 0.085A
8
A
5
B
C
RoHS Compliance:
As of manufacturing date February 2005, all standard products meet
the requirements of 2011/65/EU, known as the RoHS initiative.
Note:
Order and shipping documentation may have a “-B” suffix; this indicates Bulk
packaging but does not show on the actual part number marked on the transformer.
*Upon printing, this document is considered “uncontrolled”. Please contact Triad Magnetics
website for the most current version.
For soldering and washing information please see
http://www.triadmagnetics.com/faq.html
1
4
0.06" DIAMETER
HOLE
Board Layout
www.TriadMagnetics.com
Phone: (951) 277-0757
Fax: (951) 277-2757
460 Harley Knox Blvd.
Perris, CA 92571
Publish Date: March 6, 2017
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