Power Transformers
Low-Profile Encapsulated
T
HE
P
OWER
P
ROFESSIONALS
The International On-Board Transformer
OB Range transformers are mounted in resin-filled, flat
thermoplastic cases with pins for soldering directly to
plated-through holes in P.C. boards.
For additional mounting strength, four holes are
molded into the corners of the case to accept optional
mounting screws.
The non-concentric twin primary and secondary
windings are wound on separate bobbins, which
provides maximum isolation and low inter-winding
capacitance.
The low height profile allows for close spacing
between boards.
Features and Benefits
•
International certifications: UL 506, CSA C22.2,
EN 60/742, EN 61 558, SEV 1003, VDE 0551,
VDE 0570. CE marked.
•
Also available in self-extinguishing materials
to UL 94V-0.
•
Low profile
•
•
•
•
•
•
PCB mounted
Resin filled under vacuum
5KV AC flash test
Custom designs available
Industry standard
High reliability
General Specification for OB types
Primaries:
115/230 V.
Frequency:
50/60 Hz.
Maximum ambient temperature:
40˚ C.
Secondary voltage tolerance:
Within 5% at normal input
and full load.
Flash tested:
at 5K VAC.
Mounting:
On P.C. board.
Certifications:
VDE 0551, VDE 0570, IEC 742, UL 506,
DIN/EN60 742, EN61 558, CSA C22.2, SEV 1003;
EN 60-950 available on request.
Transformer Connections
Primaries and Secondaries
Parallel Connected
2xI
V
230V
C.T. 2 x V
230V
Primaries and Secondaries
Series Connected
I
Primaries Series Connected,
Secondaries Independent
I
V
I
V
0
115V
page
14
860/355-4711 • FAX 860/354-8597
www.avellindberg.com • sales @avellindberg.com
Power Transformers
T
HE
P
OWER
P
ROFESSIONALS
Low-Profile Encapsulated
Figure 1
53 (2.09)
Height
(see chart)
5 (.197)
115V
10 (.254)
0V
44
(1.73)
37.5
(1.48)
15 (.59)
115V
10 (.254)
0V
8 (.315) hole depth
5 (1.97)
47.5 (1.87)
35 (1.38)
0
VSEC
Pin View
25 (.984)
5 (1.97)
5
VSEC
0
.8 (.003) dia (typ.)
Accepts #4 self-tapping screw (typ.)
Figure 2
67.8 (2.67)
Height
(see chart)
5
(.197)
115V
15 (.59)
0V
57
(2.24)
50
(1.97)
16 (.63)
115V
15 (.59)
0V
8 (.315) hole depth
.8 (.003) dia (typ.)
VSEC
10 (.254)
0
Accepts #4 self-tapping screw (typ.)
62.5 (2.46)
45 (1.77)
0
10 (.254)
VSEC
Pin View
26 (1.02)
Dimensions in mm (inches). • Proportions altered to illustrate detail.
Transformer Specifications
Load
(VA)
Secondary RMS
Rating Series
Secondary RMS
Rating Parallel
5V @ 160mA
6V @ 133mA
9V @ 88mA
12V @ 66mA
15V @ 54mA
18V @ 44mA
24V @ 33mA
5V @ 400mA
6V @ 340mA
9V @ 220mA
12V @ 170mA
15V @ 140mA
18V @ 110mA
24V @ 80mA
0550 only.
Regulation
(Typical)
30%
30%
30%
30%
30%
30%
30%
25%
25%
25%
25%
25%
25%
25%
Height
(mm / inches)
10.8
10.8
10.8
10.8
10.8
10.8
10.8
17.6
17.6
17.6
17.6
17.6
17.6
17.6
/
/
/
/
/
/
/
/
/
/
/
/
/
/
.425
.425
.425
.425
.425
.425
.425
.692
.692
.692
.692
.692
.692
.692
Weight
(g / pounds)
107
107
107
107
107
107
107
115
115
115
115
115
115
115
/
/
/
/
/
/
/
/
/
/
/
/
/
/
0.23
0.23
0.23
0.23
0.23
0.23
0.23
0.254
0.254
0.254
0.254
0.254
0.254
0.254
Drawing
Figure
2
2
2
2
2
2
2
1
1
1
1
1
1
1
AVEL
P/N
OB.8-5
OB.8-6
OB.8-9
OB.8-12
OB.8-15
OB.8-18
OB.8-24*
OB2-5
OB2-6
OB2-9
OB2-12
OB2-15
OB2-18
OB2-24*
0.8
10V @ 80mA
0.8
12V @ 67mA
0.8
18V @ 44mA
0.8
24V @ 33mA
0.8
30V @ 27mA
0.8
36V @ 22mA
0.8
48V @ 17mA
2
10V @ 200mA
2
12V @ 170mA
2
18V @ 110mA
2
24V @ 85mA
2
30V @ 70mA
2
36V @ 65mA
2
48V @ 40mA
* These transformers meet VDE
Continued on next page
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