ISO 9001 ISO 14001 AS 9100 CERTIFIED
Mini-Circuits
®
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
The Design Engineers Search Engine Provides ACTUAL Data Instantly at
®
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.
For detailed performance specs
& shopping online see web site
minicircuits.com
IF/RF MICROWAVE COMPONENTS
A
B
C
D
E
F
G
H
J
.010
.042
.020
.100
7.62 6.86 5.84 0.25 1.07 0.51 2.54 1.27 1.27
K
L
M
N
P
Q
R
S
wt
.020
.036
.575
.600
.125
.050
.100
grams
0.51 0.91 6.60 14.61 15.24 3.18 1.27 2.54
0.50
50Ω 0.1 to 300 MHz
RF Transformer
Surface Mount
CASE STYLE: KK81
PRICE: $6.95 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
TT4-1A-KK81
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.
Ω
RATIO
(Secondary/Primary)
FREQUENCY
(MHz)
INSERTION LOSS*
3 dB
MHz
2 dB
MHz
1 dB
MHz
4 0.1-300 0.1-300 0.2-250 0.3-180
* Insertion Loss is referenced to mid-band loss, 0.3 dB typ.
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
• wideband, 0.1 to 300 MHz
• good return loss
• also available with plug-in (X65)
and flat-pack (W38) leads
Applications
• VHF/UHF
• impedance matching
• receivers/transmitters
TT4-1A-KK81+
TT4-1A-KK81
0.10 1.17 10.70
0.85 0.44 23.68
4.00 0.29 30.12
18.93 0.26 27.31
53.35 0.32 17.29
99.34 0.43 10.23
175.64 0.49 3.69
223.68 0.60 1.96
261.29 0.99 1.36
300.00 2.21 1.09
TT4-1A-KK81
INSERTION LOSS
0.0
0.5
1.0
1.5
2.0
2.5
0.1 1 10 100 1000
FREQUENCY (MHz)
INSERTION LOSS (dB)
TT4-1A-KK81
INPUT RETURN LOSS
0
10
20
30
40
50
0.1 1 10 100 1000
FREQUENCY (MHz)
RETURN LOSS (dB)
Permanent damage may occur if any of these limits are exceeded.