Inches/mm
2 x size
±.005

L57 SERIES

ASSEMBLY PART NO.
COLOR CODE
MAGNETIC MATERIAL (1)
FREQUENCY RANGE (2)
MATERIAL PERMEABILITY
ASSEMBLY ALnH/turns2 (3)
MAX µh
100 turns
MIN µh (4)
100 Turns
TEMPERATURE STABILITY (5)
L57-1-PCT-B-4
BLUE
CARBONYL C
.15-2.0 MHz
20.0
18.5
185
60
280 ppm/° C
L57-2-PCT-B-4
RED
CARBONYL E
.25-10 MHz
10.0
13.0
130
54
95 ppm/° C
L57-3-PCT-B-4
GREY
CARBONYL HP
.02-1.0 MHz
35.0
21.5
215
70
370 ppm/° C
L57-3F-PCT-B-4
GREY/ORANGE
HP/ FERRITE
.01-1.0 MHz
80.0
32.0
320
81
1000 ppm/° C
L57-6-PCT-B-4
YELLOW
CARBONYL SF
10-50 MHz
8.5
12.0
120
51
35 ppm/° C
L57-7-PCT-B-4
WHITE
CARBONYL TH
1.0-20 MHz
9.0
12.5
125
52
30 ppm/° C
L57-10-PCT-B-4
BLACK
CARBONYL W
10-100 MHz
6.0
10.5
105
50
150 ppm/° C
L57-17-PCT-B-4
LAVENDER
CARBONYL
20-200 MHz
4.0
7.0
70
50
50 ppm/° C

1) The iron powder or ferrite materials are used in a portion of the base, the tuning core and cup core. Mix 3F is a combination of a ferrite tuning core and an iron powder cup core.

2) This represents the frequency range for Q optimization in tuned or resonant circuits. The inductive properties of the material is effective over a considerably wider frequency range.

3) Nanohenries (10-9Henries) per turn squared.

4) The minimum inductance is measured in microhenries (10-6 Henries) per 100 turns with the tuning core tuned out of the winding area but still a part of the assembly.

5) The temperature stability is of the magnetic material, measured in parts per million per degree Celsius (ppm/° C) on a toroidal core and winding. This is only an indication of the temperature stability for a complete wound assembly.


L57-( )-4
TH27-2( )
PB100
CF110
C17-21( )
M107
CN101CT

4 TERMINAL ASSEMBLY
BASE ONLY (6)
TUNING CORE (7)
BASE ASSEMBLY
COLOR CODE
WINDING FORM (8)
CUP CORE
RUBBER PAD (9)
SHIELD CAN
L57-1-PCT-B-4
B202-1
TH27-201
L57-1-4
BLUE
PB100
C17-2101
M107
CN101CT
L57-2-PCT-B-4
B202-2
TH27-202
L57-2-4
RED
PB100
C17-2102
M107
CN101CT
L57-3-PCT-B-4
B202-3
TH27-203
L57-3-4
GREY
PB100
C17-2103
M107
CN101CT
L57-3F-PCT-B-4
B202-3
TH27-268
L57-3F-4
GREY/ORANGE
PB100
C17-2103
M107
CN101CT
L57-6-PCT-B-4
B202-6
TH27-206
L57-6-4
YELLOW
PB100
C17-2106
M107
CN101CT
L57-7-PCT-B-4
B202-7
TH27-207
L57-7-4
WHITE
PB100
C17-2107
M107
CN101CT
L57-10-PCT-B-4
B202-10
TH27-210
L57-10-4
BLACK
PB100
C17-2110
M107
CN101CT
L57-17-PCT-B-4
B202-17
TH27-217
L57-17-4
LAVENDER
PB100
C17-2117
M107
CN101CT

4 TERMINAL ASSEMBLY WITH PAPER COIL FORM

L5701-( )-PCT-F-4
B202-( )
TH27-2( )
L5701-( )-4
AS ABOVE
CF110
C17-21( )
M107
CN101CT

6 TERMINAL ASSEMBLY

L57-( )-PCT-B-6
B200-( )
TH27-2( )
L57-( )-6
AS ABOVE
PB100
C17-21( )
M107
CN101CT

6 TERMINAL ASSEMBLY WITH PAPER COIL FORM

L5701-( )-PCT-B-6
B200-( )
TH27-2( )
L5701-( )-6
AS ABOVE
CF110
C17-21( )
M107
CN101CT

6) The base is moulded from thermoset Diallyl Phthalate (DAP). The 4 or 6 terminals available are half hard brass, .032 inches in diameter, tin plated to MIL-STD 202 Method 208 for solderability. In 1991 the terminal diameters will be revised to match the L45 diameter of .024 inches.

7) The tuning core is 8-40 shallow thread coated with Teflon. Tuning-Tool-A is the recommended adjustment tool.

8) The winding bobbin PB100 is moulded nylon 6/6. CF110 is a phenolic impregnated paper tube.

9) The anti-vibration silicon rubber pad M107 is optional. It will be excluded from assemblies when the "P" is excluded from the assembly number. (ie: L57-2-CT-B-4)


 

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Phone (714) 970-0900 * FAX (714) 970-0800
Internet: http://www.lodestonepacific.com

 


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