RHOMBUS-IND T-1291

"U" INTERFACE TRANSFORMER
Turns Ratio ( + 5% )
1.6 : 1.6 : 1 : 1
Electrical Specifications at 25OC
Parameter
Min.
Inductance (1-4), Shorted pins 2-3 (1)
Inductance (1-4), Shorted pins 2-3 (2)
Typ.
17.5
90
DC Resistance
With pins 2-3, Shorted
(1-4)
DC Resistance
With pins 6-7, Shorted
(5-8)
3.9
3.8
Pins (1-4) to (5-8)
Schematic Diagram
1
5
µH
2
6
pF
3
7
4
8
mH
70
Interwinding Capacitance (1)
Units
mH
13.3
Leakage Inductance (1)
Hi-Pot
Max.
4.9
4.8
5.8
5.7
1500
Ω
Ω
VRM
1. Measured at 10 kHz, 100 Vrms, 0 mAdc.
2. Measured at 10 kHz, 100 Vrms, 60 mAdc.
.740
(18.8)
1
8
7
6
5
2
Bottom
View
3
4
T-1291
YYWW
Physical
Dimensions
.024
(0.60)
..024
(0.60)
8
.150
(3.81)
7
.200
(5.08)
6
.150
(3.81)
5
Suggested Solder Pad Layout
for both Surface Mount Versions
inches (mm)
1
2
3
4
.866
(22.0)
.700
(17.8)
0.77
(19.6)
Max.
.492
(12.5)
.024
(0.60)
TYP.
.200 .150
(5.08) ((3.81)
TYP.
.010
(0.25)
TYP.
0.06
(1.6)
RHOMBUS P/N: T-1291
CUST P/N:
DATE: 05-09-2001
Rhombus
Industries Inc.
Transformers & Magnetic Products
NAME:
SHEET:
15801 Chemical Lane, Huntington Beach, CA 92649
Phone: (714) 898-0960
FAX: (714) 896-0971
www.rhombus-ind.com