Common Mode Inductors
SEMI-POTTED VERTICAL STYLE
PARAMETER
MIN.
TYP.
MAX.
UNITS
Inductance
@ 0.20 Vrms / 1 kHz
DCR Max. of each Winding
Current
Leakage Inductance
Dielectric Strength
Creepage Between Windings
2.0
20
7.5
25
1250
3.0
mH
mΩ
A
µH
Vrms
mm
Single Layer Windings with
Spacers specially designed by
Rhombus Industries to provide
3mm Creepage and Clearance
for International Safety
Compliance.
Operating Temperature:
These
parts are made
with materials rated for 130
0
C
minimum, and these
components can be safely
operated up to 130
O
C.
Designed to prevent noise emission
in switching power supplies at input.
Windings balanced to 1%
Isolation 1250 VRMS
Materials used in the construction
of these parts are UL 94 VO and
are rated at 130
o
C or better
Temperature Range -40
0
C to +130
0
C
H
E
F
G
C
B
* AMBIENT + TEMPERATURE
RISE. In addition, inductance
will be effected by an increase
in temperature. Typically:
20% increase to 50
0
C
40% increase to 100
0
C
65% increase to 130
0
C
D
A
Leads #17 AWG
1
Bottom View
3
4
2
Dimensions in Inches (mm)
Min.
Typ.
Max.
A
B
C
D
E
F
G
H
0.200 (5.08)
0.035 (0.9)
0.600 (15.2)
0.900 (22.9)
0.600 (15.2)
1.45 (36.8)
0.90 (22.9)
Schematic Diagram
1.50 (38.1)
RHOMBUS P/N:
L-257L
CUST P/N:
NAME:
DATE:
10/20/00
SHEET:
1 OF 1
Rhombus
Industries Inc.
Transformers & Magnetic Products
15801 Chemical Lane, Huntington Beach, CA 92649
Phone: (714) 898-0960
FAX: (714) 896-0971
www.rhombus-ind.com
stm32/stm8
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