L42 SERIES

Inches/mm
2 x size
±.005


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)
L42-2-CT-F-2
RED
CARBONYL E
.25-1 MHz
10.0
12.5
125
52
95 ppm/° C
L42-3-CT-F-2
GREY
CARBONYL HP
.02-1.0 MHz
35.0
20.4
204
64
370 ppm/° C
L42-6-CT-F-2
YELLOW
CARBONYL E
2.0-1.0 MHz
8.5
11.5
115
47
1000 ppm/° C
L42-10-CT-F-2
BLACK
CARBONYL E
10-100 MHz
6.0
10
100
46
150 ppm/° C
L42-17-CT-F-2
LAVENDER
CARBONYL E
20-200 MHz
4.0
6.7
61
45
50 ppm/° C

1) The iron powder or ferrite materials are used in the tuning core and 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.

B342-w/CF120
CF120
PB142
B342-w/PB142
TH23-4( )
C12-42( )
CN342CT

5 TERMINAL ASSEMBLY (6)
COILFORM BASE ASSEMBLY (7)
BASE ONLY
BOBBIN WINDING FORM (8)
COLOR CODE
TUNING CORE (9)
CUP CORE
SHIELD CAN
L42-2-CT-F-2
B342-w/CF120
B342
B342w/PB142
RED
TH23-402
C12-4002
CN325BT
L42-3-CT-F-2
B342-w/CF120
B342
B342w/PB142
GREY
TH23-403
C12-4003
CN325BT
L42-6-CT-F-2
B342-w/CF120
B342
B342w/PB142
YELLOW
TH23-406
C12-4003
CN325BT
L42-10-CT-F-2
B342-w/CF120
B342
B342w/PB142
BLACK
TH23-410
C12-4006
CN325BT
L42-17-CT-F-2
B342-w/CF120
B342
B342w/PB142
LAVENDER
TH23-417
C12-4010
CN325BT

6) The base is molded in Rynite. The base will position two tinned winding leads up to #24 AVG (.200 Dia.) for IR reflow surface mounting directly to the printed circuit board. The CF120 coiform is glass reinforced polyester tube with 8-32 internal threads. Coplanearity is not an issue due to three contact points.

7) The optional PB142 snap in bobbin is self threading polypropylene. To order, substitute "B" for "F" in the assembly part number

8) The tuning core is a 8-32 shallow thread coated with Teflon. Tuning-Tool-A is the recommended adjustment tool.


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