COILCRAFT - Inductors, Transformers, Filters

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Surface Mount Wideband RF Transformers

Photo

SPECIFICATIONS

Frequency Response curves - 1:1 transformers

Frequency Response curves - 2:1 transformers

Dimensions     Tape and reel specifications

View data sheet in Acrobat PDF format

1:1 Transformers
Part number L per
winding
(µH)		 Test
freq.
(MHz)		 Impe-
dance
ratio		 DCR
max
(Ohms)		 IDC
(mA)		 Isolation
(Vrms)		 Insertion
loss (dB)		 Bandwidth
(MHz)
1812WBT-1 14 10 1:1 4.8 200 50 <1 .340 - 22
1812WBT-2 5.3 10 1:1 1.8 400 50 <1 .800 - 60
1812WBT-3 1.25 50 1:1 0.7 500 50 <1 4 - 200
1812WBT-4 .220 50 1:1 0.3 700 50 <1 11 - 480
1812WBT-5 .090 50 1:1 0.15 700 50 <1.5 48 - 645

2:1 Transformers
Part number

L per
winding (µH)

 Test
freq.
(MHz)		 Impe-
dance
ratio

DCR max
(Ohms)

 IDC
(mA)		 Isolation
(Vrms)		 Insertion
loss (dB)		 Bandwidth
(MHz)
Prim. Sec. Prim. Sec.
1812WBT2-1 13.80 6.90 10 2:1 4.6 3.2 200 50 <1.5 .800 - 23
1812WBT2-2 5.850 2.925 10 2:1 1.25 0.95 400 50 <1.5 2.2 - 65
1812WBT2-3 2.60 1.30 10 2:1 0.52 0.42 600 50 <1.5 4 - 105
1812WBT2-4 .910 .455 50 2:1 0.27 0.23 700 50 <1.5 11 - 200

Operating temperature range -40° C to +85° C.
Electrical specifications at 25° C.

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Copyright © 1999, Coilcraft, Inc.
Updated: July 21, 1999



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