1
Data Sheet
!Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifi cations are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifi cations because there is no space for detailed specifi cations. Therefore, please approve our product
specifi cations or transact the approval sheet for product specifi cations before ordering.
http://www.murata.com/
1
Microwave Components/Modules > Microchip Transformer (Balun) > Wire Wound Type
2011.11.2
oThis data sheet is applied for Micro Chip Transformer used for General Electronics equipment for your design.
Microchip Transformer (Balun) Wire Wound Type
DXW21B Series (0805 Size)
c Dimensions
2.0±0.2
(0.4)(0.4)
1.2±0.2
1.2±0.2
(0.45) (0.45)
(1) (2)
(3)(4)
(0.17)
(in mm)
(1)
(2) (3)
(4)
: Unbalance port
: Balance port
: GND
: Electrode
c Equivalent Circuit
(1)
(4)
(2)
Unbalanced Balanced 1
Balanced 2
(3)
No polarity.
c Packaging
Code Packaging Minimum Quantity
L180mm Embossed Tape 2000
K330mm Embossed Tape 10000
BBulk(Bag) 500
c Rated Value (p: packaging code)
Part Number Frequency Range Port Impedance Insertion Loss
at Freq. Range (max.)
CMRR
at Freq. Range (min.) Rated Power Operating Temperature Range
DXW21BN7511Sp1 to 1.5GHz 75 ohm - 75 ohm 1.4dB 20dB 27dBm -40 to +85°C
DXW21BN7511Tp50 to 870MHz 75 ohm - 75 ohm 1.0dB 20dB 27dBm -40 to +85°C
Only for refl ow soldering.
c Insertion Loss Characteristics
DXW21BN7511S
-3
-2.5
-2
-1.5
-1
-0.5
0
1000 1200 1400 1600 1800 2000
Frequency (MHz)
Insertion Loss (dB)
c CMRR Characteristics
DXW21BN7511S
20
25
30
35
40
45
1000 1200 1400 1600 1800 2000
Frequency (MHz)
CMRR (dB)
Continued on the following page.
2
Data Sheet
!Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifi cations are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifi cations because there is no space for detailed specifi cations. Therefore, please approve our product
specifi cations or transact the approval sheet for product specifi cations before ordering.
http://www.murata.com/
2
Microwave Components/Modules > Microchip Transformer (Balun) > Wire Wound Type
2011.11.2
oThis data sheet is applied for Micro Chip Transformer used for General Electronics equipment for your design.
Continued from the preceding page.
c Insertion Loss Characteristics
DXW21BN7511T
0
1
2
3
4
5
6
Insertion Loss (dB)
Frequency (MHz)
100010050 2000
c CMRR Characteristics
DXW21BN7511T
40
30
20
45
35
25
CMRR (dB)
Frequency (MHz)
100010050 2000
c !Caution/Notice
!Caution (Rating)
Do not use products beyond the rated current and rated
voltage as this may create excessive heat and
deteriorate the insulation resistance.
Notice
Solderability of Tin plating termination chip might be
deteriorated when low temperature soldering profi le
where peak solder temperature is below the Tin melting
point is used. Please confi rm the solderability of Tin
plating termination chip before use.
