www.stancor.com
“Low Boy”
Low Profile
Split Bobbin-Printed Circuit Transformers
ELECTROCUTION HAZARD
Disconnect electric power to system at
main fuse or circuit breaker box before
servicing. Failure to do so could result
in death or serious injury.
FIRE HAZARD
Do not exceed transformer ratings.
Higher voltage may damage control
and could cause personal injury or
property damage.
SPECIFICATIONS:
WARNING
!
NOTES:
1. All dimensions in inches, unless otherwise specified.
2. All dimensions ±.062, unless otherwise specified.
PART NO. 37-6168B
Replaces 37-6168A
0838
INPUT:
OUTPUT:
INSULATION RATING:
TEMPERATURE RISE:
DIELECTRIC STRENGTH:
AGENCY STAND ARDS:
FILE NOs.:
115/230VAC, 50/60Hz
See table on reverse side
Class A (105˚C)
65˚C Max. rise
over 40˚C Max. ambient
2000 VRMS
UL Recognized to UL-506
UL File #E68100
Output
VA
2, 3
4, 5, 6
12
H
0.63
0.88
1.06
W
1.56
1.56
2.00
L
1.88
1.88
2.50
ML
1.62
1.62
2.00
MW
0.88
0.88
1.00
A
1.60
1.60
2.00
B
0.38
0.38
0.50
Wt.
Lb.
0.28
0.34
0.72
Dimensions – inches
.020 x.041 .002
.216 .039
1
5
LINE
Primary
115V
50/60Hz
LINE
LINE
Primary
230V
50/60Hz
LINE
LOAD
LOAD
LOAD
LOAD
Parallel Connections Series Connections
1
2
4
3
5
6
8
7
1
2
4
3
5
6
8
7
Connection Diagrams
L
H
W
.125 .015 DIA.
ML .020
MW
.020
B .010
A .020
“Low Boy” Low Profile
Split Bobbin-Printed Circuit Transformers
LB-210 2 10V C.T. @ 200 mA 5V @ 400 mA
LB-310 3 10V C.T. @ 300 mA 5V @ 600 mA
LB-410 4 10V C.T. @ 400 mA 5V @ 800 mA
LB-510 5 10V C.T. @ 500 mA 5V @ 1.0 A
LB-610 6 10V C.T. @ 600 mA 5V @ 1.2 A
LB-1210 12 10V C.T. @ 1.2 A 5V @ 2.4 A
LB-412 4 12V C.T. @ 333 mA 6V @ 667 mA
LB-512 5 12V C.T. @ 417 mA 6V @ 833 mA
LB-612 6 12.6V C.T. @ 450 mA 6.3V @ 900 mA
LB-1212 12 12.6V C.T. @ 900 mA 6.3V @ 1.8 A
LB-215 2 15V C.T. @ 150 mA 7.5V @ 300 mA
LB-315 3 15V C.T. @ 225 mA 7.5V @ 450 mA
LB-616 6 16V C.T. @ 350 mA 8V @ 700 mA
LB-1216 12 16V C.T. @ 700 mA 8V @ 1.4 A
LB-420 4 20V C.T. @ 200 mA 10V @ 400 mA
LB-520 5 20V C.T. @ 250 mA 10V @ 500 mA
LB-620 6 20V C.T. @ 300 mA 10V @ 600 mA
LB-1220 12 20V C.T. @ 600 mA 10V @ 1.2 A
LB-424 4 24V C.T. @ 167 mA 12V @ 333 mA
LB-524 5 24V C.T. @ 208 mA 12V @ 417 mA
LB-624 6 24V C.T. @ 250 mA 12V @ 500 mA
LB-1224 12 24V C.T. @ 500 mA 12V @ 1.0 A
LB-634 6 34V C.T. @ 170 mA 17V @ 340 mA
LB-1234 12 34V C.T. @ 340 mA 17V @ 680 mA
LB-240 2 40V C.T. @ 60 mA 20V @ 120 mA
LB-640 6 40V C.T. @ 150 mA 20V @ 300 mA
LB-1240 12 40V C.T. @ 300 mA 20V @ 600 mA
LB-256 2 56V C.T. @ 45 mA 28V @ 90 mA
LB-656 6 56V C.T. @ 100 mA 28V @ 200 mA
LB-1256 12 56V C.T. @ 200 mA 28V @ 400 mA
LB-288 2 88V C.T. @ 28 mA 44V @ 56 mA
LB-688 6 88V C.T. @ 65 mA 44V @ 130 mA
LB-1288 12 88V C.T. @ 130 mA 44V @ 260 mA
LB-2120 2 120V C.T. @ 20 mA 60V @ 40 mA
LB-4120 4 120V C.T. @ 33 mA 60V @ 66 mA
LB-5120 5 120V C.T. @ 41.7 mA 60V @ 83.3 mA
LB-6120 6 120V C.T. @ 50 mA 60V @ 100 mA
LB-12120 12 120V C.T. @ 100 mA 60V @ 200 mA
LB-2230 2 230V C.T. @ 10 mA 115V @ 20 mA
LB-6230 6 230V C.T. @ 25 mA 115V @ 50 mA
LB-12230 12 230V C.T. @ 50 mA 115V @ 100 mA
SECONDARY
V.A. Series Output Parallell Output
STANCOR or Across 5 & 8 Across
Part No. Watts Connect 6 & 7 5 & 7, 6 & 8
• Non-concentric winding provides isolation by design, elimi-
nating the need for an electrostatic shield.
• Semi-Toroidal Construction – Reduces radiated magnetic
fields and results in balanced windings.
Pri. Coil 1 1
2
5
6
3
4
7
8
Sec. Coil 1
Pri. Coil 2
Sec. Coil 2
Explanation of Low Boy Interconnections
Because of the toroidal effect, two identical coils
are connected in series or parallel, but one of the
coils must be connected in reverse in order to get
correct polarity and voltage.
