Mechanical Schematics
Bottom
View
.050
1,27
.100
2,54
.030
0,76
5X
.028
0,71
5X
SUGGESTED PAD LAYOUT
.100
2,54
.190
4,83
.060
1,52
.030
0,76
5X
.050
1,27
.150 ± .015
3,81 ± 0,38
Top
View
.150
3,81
+.020
.015
+0,51
0,38
.110 ± .015
2,79 ± 0,38
CX204X
Side
View
CX204XL
There are no plated areas
on side of substrate.
Pin 1
1
6
4
1
3
A
SEC : PRI
C
PRI : SEC
61
43
2
6
4
1
3
B
SEC : PRI
D
6
4
3
PRI
SEC
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
Part Impedance Ratio1Bandwidth 2, 3 Primary
Number Pri:Sec (MHz TYP) Schematic Pins
(±2%) 2 dB 1 dB
CX2038 CX2038L* 75 Ω:75 ΩUp to 1500 4.5-1000 C 4-6
CX2039 CX2039L* 50 Ω:50 ΩUp to 1500 4.5-1000 C 4-6
NOTE: Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number (ex: CX2040T).
RF TRANSFORMERS
Transformers for Wideband RF Applications
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Miniature surface mount package
Various impedance ratios available
Excellent insertion loss
Ideal for Balanced-to-Unbalanced applications
Products from .5 to 1500 MHz bandwidth
RAQ
C203.A (4/03)
U.S: 858 674 8100
••
U.K: 44 1483 401 700
••
France: 33 3 84 35 04 04
••
Singapore: 65 6287 8998
••
Taiwan: 886 2 2698 0228
••
http://www.pulseeng.com
Tape & Reel . . . . . . . . . . . . . . . . . . . . . .1000 /reel
Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 /tray
Power Rating . . . . . . . . .30 mA MAX; 0.25 W MAX
Part Impedance Ratio1Turns Ratio Bandwidth 2, 3 Insertion Loss Primary
Number Pri:Sec Pri:Sec (MHz TYP) @ Midband Schematic Pins
Regular Low Cost (±2%) (±2%) 3 dB 2 dB 1 dB (dB TYP)
–CX2041 1:1 1:1 0.05-450 0.75-300 0.1-200 0.6 B 4-6
CX2040 CX2040L 1:1 1:1 1.5-500 2.5-400 5-350 0.9 A 4-6
CX2043 CX2043L 1.5:1 √1.5:1 – – 1-1000 0.2 D 3-6
CX2044 CX2044L 1.5:1 √1.5:1 – 1.0-500 5-100 0.2 A 1-3
CX2045 CX2045L 1:2 1:1.414 – – 3-300 0.8 B 4-6
CX2047 CX2047L 1:4CT 1:2CT – .5-300 1.5-100 0.24 B 4-6
–CX2049L 1:8CT 1:2.83CT 2-500 – – TBD B 4-6
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Printed on recycled paper. ©2003, Pulse Engineering, Inc. C203.A(4/03)
Application Notes
A. Bandwidth specifications for CX2040 and CX2047 are for a 50 Ωsystem.
B. Materials used in the products are UL94-V0 recognized. Products meet
requirements of IEC 695-2-2 (Needle Flame Test).
C. CX2038, CX2039 and CX2043 transformer configurations do not provide
DC isolation between primary and secondary windings.
D. For additional impedance ratios and frequency ranges, please contact
Applications Engineering.
E. Pick and place operation: smooth upper surface of device allows automatic
pick and place.
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 TRANSFORMERS
Transformers for Wideband RF Applications
CX2038 & CX2038L
0
0.1 110 100 1000
Frequency (MHz)
Insertion Loss (dB)
1
2
3
4
1500
CX2047 & CX2047L
0
0.1 110 100 500
Frequency (MHz)
1
2
3
4
CX2040 & CX2040L
0
110 100 500
Frequency (MHz)
1
2
3
4
CX2044 & CX2044L
0
110 100 500
Frequency (MHz)
1
2
3
4
CX2043 & CX2043L
0
0.1 110 100 1000
Frequency (MHz)
Insertion Loss (dB)
1
2
3
4
1500
CX2039 & CX2039L
0
0.1 110 100 1000
Frequency (MHz)
1
2
3
4
1500
Insertion Loss (dB)
CX2045 & CX2045L
0
110 100 500
Frequency (MHz)
1
2
3
4
Typical Insertion Loss @ 25°C
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 products and/or registered trademarks of their respective owners.
For More Information :
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 6287 8998
FAX: 65 6280 0080
HONG KONG
(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
6 Wong Chuk Yeung Street
Fotan, Shatin, Hong Kong
TEL: 852 2788 6588
FAX: 852 2776 1055
DISTRIBUTOR
