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© 2001 Wilco Corporation | All Rights Reserved
       
 
  Notes:
  All choke coils in this series are Durez covered and EIA color coded. They have an inductance of +/- 10% and leads are No. 20 AWG tinned copper 1-1/2" long. Parts U150 through U501 are wound on 0.156" dia. phenolic forms with body length dimensions 7/16". Parts U601 through U102 are wound on the same form with body length dimensions 1/2". Parts U252 through U752 use 0.156" dia powered iron forms, with body length dimensions 7/16". Parts U103 through U503 use 0.187" dia. iron forms, with body length dimens ions 5/8". Diameters of coils vary from 1/4" to 5/8" depending on inductance value.
 
  Features:
• Small Board Space
• High L
• Conformal Coated
 
  Applications:
• High Voltage
• RFI Suppression
• Tuners
• Telecommunications
• Radio
 
Wilco Part Number

L
(uH)

 Test Frequency
(MHz)		 Tol. Q (Nom) SRF Typ
(MHz)		 RDC (Nom) Amps
(mA)		 Diameter
(Nom)		 A
(Nom)		  
U150 15.00 2.5 10% 24.9 20 1.7 480 0.218 0.437
U250 25.00 2.5 10% 22.3 16 2.2 440 0.25 0.437
U350 35.00 2.5 10% 20.5 14 2.6 420 0.25 0.437
U450 45.00 2.5 10% 18.8 12.4 2.8 400 0.281 0.437
U550 55.00 2.5 10% 18.1 11.4 3.4 380 0.281 0.437
U750 75.00 2.5 10% 16.8 9.9 3.8 360 0.281 0.437
U101 100.00 2.5 10% 15.6 8.8 4.4 350 0.312 0.437
U121 120.00 0.79 10% 25.8 8 5 340 0.343 0.437
U141 140.00 0.79 10% 24.7 7.21 5.5 330 0.343 0.437
U161 160.00 0.79 10% 25.3 6.9 5.9 330 0.375 0.437
U181 180.00 0.79 10% 24.4 6.52 6.3 320 0.375 0.437
U201 200.00 0.79 10% 25 6.12 6.8 320 0.375 0.437
U301 300.00 0.79 10% 24.2 5.11 8.5 290 0.437 0.437
U401 400.00 0.79 10% 24.1 4.65 10 280 0.437 0.437
U501 500.00 0.79 10% 23.6 4.02 11 270 0.5 0.437
U601 600.00 0.79 10% 39.1 3.49 25 170 0.562 0.5
U701 700.00 0.79 10% 38.4 3.33 27 160 0.562 0.5
U801 800.00 0.79 10% 36.9 3.05 29 160 0.562 0.5
U901 900.00 0.79 10% 36.4 2.87 31 150 0.562 0.5
U102 1000.00 0.79 10% 38 2.63 32 150 0.562 0.5
U252 2500.00 0.25 10% 70.8 1.02 32 150 0.5 0.5
U502 5000.00 0.25 10% 68 0.73 50 140 0.5 0.5
U752 7500.00 0.25 10% 64.6 0.62 65 130 0.5 0.5
U103 10000.00 0.25 10% 55 0.51 42 115 0.351 0.625
U153 15000.00 0.079 10% 72 0.44 65 110 0.418 0.625
U203 20000.00 0.079 10% 71 0.37 77.9 100 0.453 0.625
U253 25000.00 0.079 10% 70 0.34 88 100 0.512 0.625
U503 50000.00 0.079 10% 65 0.25 140 90 0.612 0.625