72
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.
2.Equipped with Tabs
Termination are equipped with tabs to permit direct
mounting to flat circuits.
3.Housing functions as a radiator to
permit small size and high-density
mounting.
s
Product Specifications
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
q
The test method conforms to MIL-STD-202.
s
Materials
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
-10
to +60
95% Max.
Item
Standard
Conditions
1.Vibration
2.Shock
3.Temperature cycle
No electrical discontinuity of 1
s or more
No damage, cracks, or parts dislocation
No damage, cracks, or parts dislocation
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: -55
+5
to +35
+85
+5
to +35
Time: 30
15 max.
30
15 max. (Minutes)
200 cycles
Part
Tabs
Copper
Solder plating
Resistor
Metal film
----------
Material
Finish
HT-1-3
HT-30-1
HT-50-1
HT-10-2
HT-20-3
HT-1-2
HT-1-1
HT-025-1 HT-05-2 HT-025-2
HT-30-1
HT-025-1, HT-025-2, and HT-05-2
q
The test method conforms to MIL-STD-202.
Item
Standard
Conditions
1.Vibration
2.Shock
3.Temperature cycle
No electrical discontinuity of 1
s or more
No damage, cracks, or parts dislocation
No damage, cracks, or parts dislocation
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: -55
+5
to +35
+120
+5
to +35
Time: 30
15 max.
30
15 max. (Minutes)
200 cycles
Part
Plate
Aluminum
Nickel plating
Tabs
Copper
Solder plating
Resistor
Metal film
----------
Material
Finish
HT-1-1, HT-1-2, and HT-1-3
Part
Plate
Copper
Nickel plating
Tabs
Copper
Silver plating
Resistor
Metal film
----------
Material
Finish
HT-10-2, HT-20-3, and HT-50-1
Part
Plate
Aluminum
Conductive alumite
Retaining plate
Phosphor bronze
Nickel plating
Tabs
Copper
Tin plating
Resistor
Metal film
----------
Material
Finish
HT-30-1
75
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
).
The soldering temperature to the microstrip board
must be less than this.
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
.
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.
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
).
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-025-1
HT-05-2
HT-1-1, HT-1-2, HT-1-3, HT-10-2,
HT-20-3, HT-30-1, HT-50-1
76
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
s
Material
s
External Dimensions
Ratings
Rated frequency range
Characteristic impedance
Maximum Input Power
Resistance value
DC to 8.0 GHz
100 ohms
20W
100
2 ohms
Heat sink temperature
at maximum output
Operating temperature range
Operating relative humidity Weight
+65
Max.
10
to +65
95% Max.
0.4 g
Item
Standard
Conditions
1.Vibration
2.Shock
3.Temperature cycle
No electrical discontinuity of 1
s or more
No damage, cracks, or parts dislocation
No damage, cracks, or parts dislocation
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: -55
+5
to +35
+120
+5
to +35
Time: 30
15 max.
30
15 max. (Minutes)
200 cycles
Part
Plate
Copper
Nickel plating
Tabs
Copper
Silver plating
Resistor
Metal film
----------
Material
Finish
CAUTION: Beryllia is used in this product. Please follow associated laws when disposing.
!
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