Mechanical Schematics
5X 0° 8°
5X .030
0,76
SUGGESTED PAD LAYOUT
5X .039
1,00
.059
1,50
.118
3,00
.114
2,90
.236
6,00
CX2078/81
Date Code Country of Origin
.169
±
.004
4,30
±
0,10
.106
2,69
.059
1,50
.118
3,00
.209
±
.004
5,30
±
0,10
.028
±
.004
0,71
±
0,10
Pin 1
.002/0,05
5 SURFACES
+.018
.012
.003
±
.002
0,08
±
0,05
.118
3,00
+0,46
0,30
RF TRANSFORMER
For Wideband RF Applications
For single-ended to balanced applications
Value-oriented construction
Small surface mount package
Excellent insertion loss
Various impedance ratios available
CX2078/CX2081
PRELIMINARY C215.P (1/02)
US 858 674 8100
··
··
UK 44 1483 401 700
··
··
France 33 3 84 35 04 04
··
··
Singapore 65 287 8998
··
··
Taiwan 886 2 2698 0228
··
··
Hong Kong 852 2788 6588
··
··
http://www.pulseeng.com
Weight . . . . . . . . . . . . . .0.43 grams
Tape & Reel . . . . . . . . . .2200 /reel
Tray . . . . . . . . . . . . . . . . .100 /tray
A
4
6
3
1
4
6
3
1
SEC:PRI
2
B
Part Impedance Ratio1Turns Ratio1Bandwidth 2, 3 Insertion Loss
Number Pri:Sec Pri:Sec (MHz TYP) @ Midband Schematic
(±2%) (±2%) (dB)
CX2078 1:1 1:1 5-500 0.6 A
CX2081 1:1.5CT 1:1.2CT 5-125 0.9 B
NOTE: Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number (ex: CX2078T).
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Dimensions: Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
UNITED STATES
(Worldwide)
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
http://www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
UNITED KINGDOM
(Northern Europe)
1 & 2 Huxley Road
The Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
FRANCE
(Southern Europe)
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
TAIWAN, R.O.C.
(Northern Asia)
3F-4, No. 81, Sec. 1
HsinTai Wu Road
Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
SINGAPORE
(Southern Asia)
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 287 8998
FAX: 65 280 0080
HONG KONG
(China/Hong Kong)
19/F, China United Plaza
1008 Tai Nan West Street
Cheung Sha Wan, Kowloon
Hong Kong, China
TEL: 852 2788 6588
FAX: 852 2776 1055
DISTRIBUTOR
For More Information :
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Printed on recycled paper. ©2002, Pulse Engineering, Inc. PRELIMINARY C215.P (1/02)
Application Notes
A. Bandwidth specifications are typical in a 75
W
system.
B. Materials used in the products are UL94-V0 recognized.
Products meet requirements of IEC 695-2-2 (Needle Flame Test).
C. For additional impedance ratios and frequency ranges, please
contact Applications Engineering.
D. CX2031 is designed to support 190 mA dc bias at center tap.
Notes from Tables
1. Impedance and turns ratios are specified primary:secondary.
(CT=Center Tap).
2. Bandwidth is referenced to midband loss.
3. These transformers are verified to operate from -40°C to
+85°C. Contact Applications Engineering for performance data.
RF TRANSFORMER
For Wideband RF Applications
CX2081 - Typical Insertion Loss
Frequency (MHz)
Insertion Loss (dB)
0
0.1 110 100 500
1
2
3
4
CX2078 - Typical Insertion Loss
Frequency (MHz)
Insertion Loss (dB)
0
0.1 110 100 500
1
2
3
4
