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Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet are subject to
Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard
Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp.
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IF/RF MICROWAVE COMPONENTS
50Ω 0.02 to 30 MHz
RF Transformer
Surface Mount
CASE STYLE: W38
PRICE: $9.95 ea. QTY (1-9)
Outline Dimensions ( )
inch
mm
Maximum Ratings
Pin Connections
Operating Temperature -20°C to 85°C
Storage Temperature 55°C to 100°C
RF Power 250mW
DC Current 30mA
Outline Drawing
Transformer Electrical Specifications
REV. A
M98898
TT25-1
IG/TD/CP
070718
Typical Performance Data
Config. B
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications.
A
B
C
D
E
F
.30
.27
.23
.010
.042
.020
7.62 6.86 5.84 0.25 1.07 0.51
H
J
K
L
wt
.100
.05
.09
.31
.036
grams
2.54 1.27 2.29 7.87 0.91
0.50
Ω
RATIO
(Secondary/Primary)
FREQUENCY
(MHz)
INSERTION LOSS*
3 dB
MHz
2 dB
MHz
1 dB
MHz
25 0.02-30 0.02-30 0.05-20 0.1-10
* Below 0.05 MHz, Insertion Loss is specified for room temperature and above.
PRIMARY DOT 4
PRIMARY 6
PRIMARY CT 5
SECONDARY DOT 3
SECONDARY 1
SECONDARY CT 2
FREQUENCY
(MHz)
INSERTION
LOSS
(dB)
INPUT
R. LOSS
(dB)
Features
• excellent return loss
• also available with surface mount gull wing (KK81)
plug-in (X65) leads
Applications
• HF
• radio communication systems
• impedance matching
• ham radio
TT25-1+
TT25-1
0.02 2.72 6.13
0.03 1.86 7.95
0.05 1.18 10.45
0.07 0.80 13.16
0.15 0.48 19.05
0.30 0.37 25.11
1.01 0.27 28.34
4.66 0.30 12.69
20.13 1.46 2.94
30.00 2.60 2.00
TT25-1
INSERTION LOSS
0.0
1.0
2.0
3.0
4.0
5.0
0.01 0.1 1 10 100
FREQUENCY (MHz)
INSERTION LOSS (dB)
TT25-1
INPUT RETURN LOSS
0
10
20
30
40
50
0.01 0.1 1 10 100
FREQUENCY (MHz)
RETURN LOSS (dB)
Permanent damage may occur if any of these limits are exceeded.