Stripline Mounting Non-reflective Terminations
HT Series
s
Features
1.High Performance
These super wide bandwidth/ultra high matching
non-reflective termination use Hirose Electric
original high frequency matching technology.
HT-30-1
HT-50-1
HT-10-2
HT-20-3
2.Equipped with Tabs
Termination are equipped with tabs to permit direct
mounting to flat circuits.
HT-1-3
HT-1-2
HT-1-1
HT-025-1 HT-05-2 HT-025-2
3.Housing functions as a radiator to
permit small size and high-density
mounting.
s
Product Specifications
Ratings
Rated frequency range (Note)
Characteristic impedance
Maximum Input Power (Note)
DC to 15.0 GHz
50 ohms
0.25 to 50 W
Operating temperature range
Operating relative humidity
-10ç to +60ç
95% Max.
NOTE: The frequency range and the maximum input power will differ depending on the products.
HT-025-1, HT-025-2, HT-05-2, HT-1-1, HT-1-2, HT-1-3, HT-10-2, HT-20-3, and HT-50-1
Item
1.Vibration
No electrical discontinuity of 1
µs
or more
No damage, cracks, or parts dislocation
2.Shock
3.Temperature cycle
No damage, cracks, or parts dislocation
Standard
Conditions
Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm,
acceleration of 98 m/s
2
for 2 hours in each of 3 directions
Acceleration of 490 m/s
2
, sine half-wave waveform,
3 cycles in each of the 3 axis
Temperature: -55ç
¡
+5ç to +35ç
¡
+85ç
¡
+5ç to +35ç
Time: 30
¡
15 max.
¡
30
¡
15 max. (Minutes)
200 cycles
q
The test method conforms to MIL-STD-202.
HT-30-1
Item
1.Vibration
No electrical discontinuity of 1
µs
or more
No damage, cracks, or parts dislocation
2.Shock
3.Temperature cycle
No damage, cracks, or parts dislocation
Standard
Conditions
Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm,
acceleration of 98 m/s
2
for 2 hours in each of 3 directions
Acceleration of 294 m/s
2
, sine half-wave waveform,
3 cycles in each of the 3 axis
Temperature: -55ç
¡
+5ç to +35ç
¡
+120ç
¡
+5ç to +35ç
Time: 30
¡
15 max.
¡
30
¡
15 max. (Minutes)
200 cycles
q
The test method conforms to MIL-STD-202.
s
Materials
HT-025-1, HT-025-2, and HT-05-2
Part
Tabs
Resistor
Material
Copper
Metal film
Finish
Solder plating
----------
HT-1-1, HT-1-2, and HT-1-3
Part
Plate
Tabs
Resistor
Material
Aluminum
Copper
Metal film
Finish
Nickel plating
Solder plating
----------
HT-30-1
Part
Plate
Retaining plate
Tabs
Resistor
Material
Aluminum
Phosphor bronze
Copper
Metal film
Finish
Conductive alumite
Nickel plating
Tin plating
----------
HT-10-2, HT-20-3, and HT-50-1
Part
Plate
Tabs
Resistor
Material
Copper
Copper
Metal film
Finish
Nickel plating
Silver plating
----------
72
s
Ordering Information
HT - 025 - 1
1
2
3
1
Series Name: HT Series
2
Power
(Example)0.25:0.25W
1:1W
3
Suffix
s
Specifications
Part Number
HT-025-1
HT-025-2
HT-05-2
HT-1-1
HT-1-2
HT-1-3
HT-10-2
!
∆
Frequnency
Range
(GHz)
DC-8
DC-8
DC-1
DC-8
DC-6
DC-15
DC-1
DC-5
V.S.W.R.
(MAX)
1.30
1.30
1.20
1.30
1.20
1.15(DC-4GHz)
1.25(4-8GHz)
1.45(8-12.4GHz)
1.55(12.4-15GHz)
1.20
1.25
Impedance
(Ohms)
50
50
50
50
50
50
50
50
Power
(W)
1/4
1/4
1/2
1
10
20
30
50
Heat Sink
Temperature at
Maximum Load
(ç Max)
+65
+65
+65
+65
+65
+65
+65
+65
Heat
Resistance
(ç/ W)
50
50
150
50
9
3.8
3
1.6
Weight
(g)
0.1
0.1
0.3
0.3
0.3
0.6
3
1.5
HT-20-3
HT-30-1
!
∆
HT-50-1
!
∆
CAUTION: Beryllia is used in this product. Please follow associated laws when disposing.
s
Typical Data
HT-1-3
HT-10-2
HT-20-3
HT-50-1
73
s
External Dimensions
HT-025-1
HT-025-2
HT-05-2
PCB Mounting Pattern
PCB Mounting Pattern
HT-1-1
•
HT-1-2
•
HT-1-3
HT-30-1
Part Number
HT-1-1
HT-1-2
HT-1-3
A
13
13
16
B
8
8
12
C
2.5
2.5
2
D
1.4
1.4
1.4
E
5.4
5.4
5.4
F
1.45
1.15
1.45
G
1.49
1.19
1.49
PCB Mounting Pattern
PCB Mounting Pattern
Part Number
A
1.65
2
B
1.7
2.05
HT-10-2
HT-20-3
HT-10-2
HT-20-3
HT-50-1
74
s
Mounting Method
q
Do not leave a space between the terminator and
the microstrip board.
q
Make the terminator tab height from the housing and
the thickness of the microstrip board the same
amount.
q
Note: The HT-025-1 type is attached with high
temperature solder (having a melting point of 280
ç
).
The soldering temperature to the microstrip board
must be less than this.
HT-025-1
q
Mounting is performed by soldering over the
microstrip line pattern.
q
The mounting should be completed by soldering
within 5 seconds using Sn-Pb type eutectic solder
containing 2 to 5% Ag with a soldering iron adjusted
to about 260
ç
.
q
The resoldering of an item that has already been
soldered once and then removed is not effective
since solder cracks will develop at the electrode
portion.
HT-05-2
q
Do not leave a space between the terminator and
the microstrip board.
q
Do not leave a space between the the microstrip
board.
q
Note: The HT-1-1, HT-1-2, HT-1-3, HT-10-2, HT-20-
3, and HT-50-1 tabs are attached with high
temperature solder (having a melting point of 280
ç
).
The soldering temperature to the microstrip board
must be less than this.
Note: Although the high frequency characteristics will
deteriorate somewhat, please attach with some slack
in the tabs in order to raise the thermal reliability.
HT-1-1, HT-1-2, HT-1-3, HT-10-2,
HT-20-3, HT-30-1, HT-50-1
75
Terminations for the Division Part of a Wilkinson Divider (100 ohms Type)
HT Series
s
Features
1.High Performance
These wide bandwidth/ultra high matching non-
reflective termination use Hirose Electric original
high frequency matching technology.
2.Equipped with Tabs
Termination are equipped with tabs to permit direct
mounting to Wilkinson type flat circuits.
3.High Power and Small Size
Beryllia is used for the material of the resistance
element to enable the termination to be of small
size and used with high power.
HT-20-3(100)
s
Product Specifications
Ratings
Rated frequency range
Characteristic impedance
Maximum Input Power
Resistance value
DC to 8.0 GHz
100 ohms
20W
100±2 ohms
Standard
Heat sink temperature
at maximum output
Operating temperature range
Operating relative humidity Weight
Conditions
Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm,
acceleration of 98 m/s
2
for 2 hours in each of 3 directions
Acceleration of 490 m/s
2
, sine half-wave waveform,
3 cycles in each of the 3 axis
Temperature: -55ç
¡
+5ç to +35ç
¡
+120ç
¡
+5ç to +35ç
Time: 30
¡
15 max.
¡
30
¡
15 max. (Minutes)
200 cycles
+65çMax.
10çto +65ç
95% Max.
0.4 g
Item
1.Vibration
No electrical discontinuity of 1
µs
or more
No damage, cracks, or parts dislocation
2.Shock
3.Temperature cycle
No damage, cracks, or parts dislocation
s
Material
Part
Plate
Tabs
Resistor
Material
Copper
Copper
Metal film
Finish
Nickel plating
Silver plating
----------
s
External Dimensions
!
∆
CAUTION: Beryllia is used in this product. Please follow associated laws when disposing.
76
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