Lodestone Pacific - Shielded Coil Forms

L39 SERIES

Inches/mm
2 x size
±.005

Repeatable Inductance and High Q
Superior Temperature Stability
This Series a Cambion Equivalent
Winding Capacity table
Q vs Frequency Graphs
All Assemblies sold Un-wound

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)
L39-1-BT-F-4	BLUE	CARBONYL C	.15-2.0 MHz	20.0	11.5	115	54	280 ppm/° C
L39-2-BT-F-4	RED	CARBONYL E	.25-10 MHz	10.0	9.8	98	48	95 ppm/° C
L39-3-BT-F-4	GREY	CARBONYL HP	.02-1.0 MHz	35.0	13.3	133	60	370 ppm/° C
L39-6-BT-F-4	YELLOW	CARBONYL SF	2.0-50 MHz	8.5	8.5	85	44	35 ppm/° C
L39-7-BT-F-4	WHITE	CARBONYL TH	1.0-20 MHz	9.0	9.3	93	46	30 ppm/° C
L39-10-BT-F-4	BLACK	CARBONYL W	10-100 MHz	6.0	7.2	72	43	150 ppm/° C
L39-17-BT-F-4	LAVENDER	CARBONYL	20-200 MHz	4.0	5.6	56	43	50 ppm/° C

1) The iron powder 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.



B391w/CF112	CF112	TH25-1( )	C12-30( )	CN315CT

4 TERMINAL ASSEMBLY	BASE ONLY (6)	WINDING FORM (7)	BASE ASSEMBLY	COLOR CODE	THREADED CORE (8)	CUP CORE	SHIELD CAN
L39-1-BT-F-4	B391	CF112	B391-w/CF112	BLUE	TH25-101	C12-3001	CN325BT
L39-2-BT-F-4	B391	CF112	B391-w/CF112	RED	TH25-102	C12-3002	CN325BT
L39-3-BT-F-4	B391	CF112	B391-w/CF112	GREY	TH25-103	C12-3003	CN325BT
L39-6-BT-F-4	B391	CF112	B391-w/CF112	YELLOW	TH25-106	C12-3006	CN325BT
L39-7-BT-F-4	B391	CF112	B391-w/CF112	WHITE	TH25-107	C12-3007	CN325BT
L39-10-BT-F-4	B391	CF112	B391-w/CF112	BLACK	TH25-110	C12-3010	CN325BT
L39-17-BT-F-4	B391	CF112	B391-w/CF112	LAVENDER	TH25-117	C12-3017	CN325BT

6) The base is moulded from thermoset Diallyl Phthatlate (DAP). The 4 terminals available are half hard brass, .025 inches in diameter, tin plated to MIL-STD 202 Method 208 for solderability.

7) The CF112 coil form is a glass reinforced polyester tube with 8-32 internal threads.

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

Next

4769 Wesley Drive * Anaheim, California 92807 U.S.A.
Phone (714) 970-0900 * FAX (714) 970-0800
Internet: http://www.lodestonepacific.com

Back to Product Index