IRON POWDER SHIELDED COIL FORMS

Adjustable/Slug Tuned
L-33 Coil Forms

    

pin spacing

    Sub miniature size
    Slug tuning
    Copper shield, tin plated
    Easy to wind
    Good Q
    Freq. range 10 KHz - 200 MHz
    Inductance range .08 - 180 uh

 

Part
number

Frequency
range (MHz)

AL (µh/100 t)
at max L

L ratio
max to min

Wire

Turns

L (µh)

Q max

L-33-1

0.30 - 1.0

76

1.7 - 1

3/44

75

42.50

80

L-33-2

1.00 - 10.0

68

1.5 - 1

9/44

75

42.50

80

L-33-3

0.01 - 0.5

80

1.8 - 1

3/44

150

180.00

70

L-33-6

10.00 - 50.0

60

1.5 - 1

26

7

0.36

100

L-33-10

25.00 - 100.0

54

1.4 - 1

26

5

0.18

120

L-33-17

50.00 - 200.0

48

1.3 - 1

26

3

0.08

130


Solid magnet wire may be substituted for the Litz wire, but somewhat lower Q may result.

Most efficient when tuning slug is set at maximum L. For Tuning flexibility calculate so that slug will be about 90% maximum L when at operating frequency.

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