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RF Variable Inductors Series 707

Variable Inductor

Dimensions DividerElectrical Specifications DividerNotes


Series 707 Dimensions

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Electrical Specifications - Series 707

Series 707 with Carbonyl J Core

Part Number * Inductance µH Q Test
Freq.
MHz
Suggested
Core		 Minimum
± 5%		 Maximum
± 10%		 At
Min. L		 At
Max L
70701  J4   0.042 0.052 84 93 40
70702  J4   0.067 0.094 102 117 40
70703  J4   0.097 0.152 116 130 40
70704  J4   0.132 0.218 96 126 25
70705  J4   0.170 0.296 110 133 25
70706  J4   0.210 0.380 120 137 25
70707  J4   0.250 0.465 124 137 25
70708  J4   0.291 0.550 128 130 25
70709  J4   0.336 0.635 129 133 25
70710  J4   0.380 0.720 133 126 25
70711  J4   0.430 0.820 140 123 25
70712  J4   0.473 0.900 139 115 25

* Part Number includes Core


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Series 707 with Carbonyl E Core

Part Number * Inductance µH Q Test
Freq.
MHz
Suggested
Core		 Minimum
± 5%		 Maximum
± 10%		 At
Min. L		 At
Max L
70701  E4   0.042 0.054 84 93 40
70702  E4   0.067 0.100 102 109 40
70703  E4   0.097 0.164 116 109 40
70704  E4   0.132 0.239 96 120 25
70705  E4   0.170 0.329 110 127 25
70706  E4   0.210 0.420 120 129 25
70707  E4   0.250 0.520 124 127 25
70708  E4   0.291 0.610 128 120 25
70709  E4   0.336 0.710 129 115 25
70710  E4   0.379 0.820 139 112 25
70711  E4   0.430 0.920 138 106 25
70712  E4   0.472 1.000 141 100 25

* Part Number includes Core


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Notes - Series 707

  1. Minimum inductance is measured with the core halfway out of the coil form.

  2. Carbonyl E & J material cores are available 1/4", 5/16", 3/8" or 1/2" long. Aluminum cores are available 5/16" long. Electrical measurements shown were made with 10-32, 3/8" long, carbonyl "E" or "J" core, as noted. Other core lengths and materials are available.

  3. Series 707 windings are 32 TPI, and have an O.D. of .285". Distance from the mounting surface to the first turn is .06".

  4. Series 707 is "closewound".

  5. Coil form material is polypropylene.

  6. These coils may be tuned with Standex tuning wrenches 160, 55, 95, 302 or 764.

  7. Standex specifications are subject to change without notice.