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RF Variable Inductors - 10mm Series 950

Variable Inductors
  • Standex 950 series inductors are precision wound on a plastic bobbin. This results in an inductor that is much more thermally stable than competing coils with similar "Q" and tuning range characteristics.

Dimensions DividerElectrical Specifications DividerNotes


Dimensions for Series 950
Additional Dimensions - Series 950

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Electrical Specifications - 10mm - Series 950

Series 950 Unshielded

Part Number * Inuctance µH Q (Minimum) Test
Freq.
MHz
Suggested
Core		  
Minimum		  
Maximum		  
@Min L		  
@Max L
950102X  E2   0.11 0.12 46 52 25
950104X  E2   0.24 0.28 52 65 25
950106X  E2   0.43 0.54 57 72 25
950108X  E2   0.66 0.84 59 75 25
950110X  E2   0.92 1.16 65 56 **
950112X  E2   1.24 1.67 43 59 7.9
950114X  E2   1.55 2.16 46 62 7.9
950116X  E2   1.88 2.70 49 65 7.9
950118X  E2   1.23 3.33 50 66 7.9
950120X  E2   2.60 4.05 52 67 7.9
950122X  E2   3.02 4.68 55 68 7.9
950124X  E2   3.41 5.40 58 68 7.9
950126X  E2   3.85 6.12 59 68 7.9
950128X  E2   4.29 6.84 60 68 7.9
950130X  E2   4.73 7.65 61 68 7.9
950132X  E2   5.17 8.01 63 68 7.9
950134X  E2   5.61 8.73 65 68 7.9
950136X  E2   6.05 9.45 67 68 7.9 
* Part Number includes Core.

  "X" in part number must be replaced by the number of pins
  required.

** Q at minimum inductance is measured at 25 MHz.  Q at
  maximum is measured at 7.9 MHz.

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Series 950 Shielded

Part Number * Inuctance µH Q (Minimum) Test
Freq.
MHz
Suggested
Core		  
Minimum		  
Maximum		  
@Min L		  
@Max L
950202X  E2   0.11 0.12 42 47 25
950204X  E2   0.23 0.25 49 56 25
950206X  E2   0.40 0.46 52 59 25
950208X  E2   0.60 0.72 55 62 25
950210X  E2   0.84 0.96 58 62 25
950212X  E2   1.12 1.37 38 44 7.9
950214X  E2   1.40 1.75 41 45 7.9
950216X  E2   1.69 2.16 42 47 7.9
950218X  E2   1.99 2.62 43 47 7.9
950220X  E2   2.31 3.10 45 48 7.9
950222X  E2   2.62 3.60 46 49 7.9
950224X  E2   2.97 4.14 49 49 7.9
950226X  E2   3.27 4.59 50 49 7.9
950228X  E2   3.63 5.13 50 49 7.9
950230X  E2   4.01 5.67 50 48 7.9
950232X  E2   4.29 6.12 50 47 7.9
950234X  E2   4.62 6.57 50 46 7.9
950236X  E2   5.06 6.93 50 44 7.9 
  * Part Number includes Core.

  "X" in part number must be replaced by the number of pins
  required.

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Notes - 10mm - Series 950

  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", or 3/8" long. Aluminum cores are available 5/16" long only. The core used for electrical specifications shown was a 10-32, .250" long, carbonyl "E" core. Other core lengths and materials are available.

  3. Inductance and Q shown were measured on an H.P. 4342A "Q" meter with the leads directly connected to the Q meter terminals. The start lead is connected to the low side and the shield can is grounded. Test frequency for inductances less than 1µH is 25 MHz. Test frequency for inductances more than 1µH is 7.9MHz.

  4. Start lead is connected to pin C. Finish is connected to pin F. Connections, taps and additional windings may be configured in almost any combination desired.

  5. These coils may be tuned by means of Standex tuning wrenches 55, 95, 302 or 764.

  6. Shield can may be in installed in alternate positions. Contact the factory for details.

  7. Distance from mounting surface to first turn is .22". I.D. of winding .218". Wire gauge is #36 AWG. Other wire sizes are available.

  8. Bobbin portion of coil form is polypropylene. Base material is dialphylate. Bobbin portion of coil form is available in higher temperature plastic.

  9. Standex specifications are subject to change without notice.