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CHF3020CBF500L Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – Power RF Terminations / Resistors | |||
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*RoHS COMPLIANT
Features
â DC to 2 GHz
â Flanged model
â Low VSWR
Applications
â High power RF transmission
CHF3020CBF Series Power RF Terminations / Resistors
General Speciï¬cations
Substrate ......................................... Beo
Resistive Film ........................ Thick Film
Tab..................................................... Ag
Cover Substrate ...........................AL203
Mounting Flange......... Cu plated with Ni
Resistance
Termination.................... 50 ohms only
Resistor ...See Resistance Value Table
Tolerance ....................................... ±5 %
Packaging..........................100 pcs./box
Absolute Ratings
Power ............... See Rated Power Table
Frequency..................................2.0 GHz
VSWR ............................. 1.30 Maximum
Capacitance .................................0.8 pF
Resistance Value Table
R Value (Ohms)
50
100
200
250
300
Code
500
101
201
251
301
Rated Power
Version
C
D
Power (W)
10
25
How to Order
CHF 3020 C B F 500 L
Model
Size
Version
C = 10 W
D = 25 W
Substrate
Mount
F = Flange
Value (see Resistance Value Table)
Function
L = Termination (50 ohms only)
R = Resistor
Characteristic Curve
100
80
60
40
20
0
-55
Product Dimensions
1.0
(0.039)
6.5
(0.256)
6.35
(0.250)
0
100
150
Heat Sink Temperature (°C)
5.08
(0.200)
MAX.
3.7
(0.146)
2.57
(0.101)
âLâ TERMINATION
1 TAB
(Available only in 50 ohm)
2.54
(0.100)
7.62
(0.300)
1.0
(0.039)
2.54
(0.100)
3.0
(0.118)
DIA.
DIMENSIONS = MILLIMETERS
(INCHES)
6.5
(0.256)
5.08
(0.200)
2.54
(0.100)
1.57
(0.062)
MAX.
3.7
(0.146)
2.57
(0.101)
0.1
(0.004)
2.54
(0.100)
6.35
(0.250)
âRâ RESISTOR
2 TABS
7.62
(0.300)
2.54
(0.100)
3.0
(0.118)
DIA.
2.54
(0.100)
1.57
(0.062)
0.1
(0.004)
Mounting High Power Devices
The mounting surface must be ï¬at to less
than 0.0254 mm (0.001 â) and devoid of
scratches or burrs. The underside of the
ï¬ange should be brushed with thermal
grease prior to being fastened to the heat
sink with mounting screws. The thermal
grease will ï¬ll any air gaps and help to
keep a good thermal contact.
Termination/Resistor Tabs (1 for Termination, 2 for Resistors)
Heat Sink/Ground Plane Flange
Circuit Board
Pre-tin the tab prior to installation. Position the tab over the circuit and solder in place.
Ensure that the temperature on the surface of the ï¬ange does not exceed 110 ËC when
running at 100 % of load. If the temperature increases then derate the power.
REV. 09/09
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Speciï¬cations are subject to change without notice.
Customers should verify actual device performance in their speciï¬c applications
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