General Specifications
Surface Mount Attenuators
8 Watts
Model RFP-250250-4AAXX
Resistive Element: Thick film
Substrate: Beryllium oxide ceramic
Terminals: Thick film silver
Outline Drawing
Notes: Tolerance is ±.010, unless otherwise specified. Operating
temperature is -55°C to +150°C (see chart). Designed to meet or
exceed applicable portions of MIL-E-5400. All dimensions are in inches.
Specifications subject to change without notice.
Electrical Specifications
Attenuation Value: 1, 2, 3, 4, 5, 6, 9, 10, 20 or
30 dB
Frequency Range: DC - 2.5 GHz
Power: 8 Watts
Surface Mount Attenuators
Features
•DC - 2.5 GHz
•8 Watts
•BeO Ceramic
•Non-Nichrome Resistive
Element
•Low VSWR
•100% Tested
1
Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121
Sales Desk Europe: Voice: (+44) 23 92 232392 Fax: (+44) 23 92 251369
.250
.230
.250
.115
.170
.085
.165
.055
.040
.060
TOP VIEW SIDE VIEW BOTTOM VIEW
XXdB
AA
RFP
HATCHED AREA INDICATES
LOCATION OF
PROTECTIVE COATING
Note: XX denotes attenuation value.
Available on Tape and Reel for Pick and Place Manufacturing.
VER. 12/5/01
Surface Mount Attenuators
Model RFP-250250-4AAXX
Specifications
2
Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121
Sales Desk Europe: Voice: (+44) 23 92 232392 Fax: (+44) 23 92 251369
Power Derating Suggested Mounting Procedures
1. Solder part in place using 60/40 type solder with controlled
temperature iron (700°F).
2. Drill thermal vias through PCB and fill with solder, such as
60/40 type.
3. To ensure good thermal connectivity to heat sink, drill and
tap heatsink and mount PCB board to heat sink using
screws.
FILLED VIA
SOLDER
HEATSINK
PC BOARD
PASTE
SOLDER
SCREW
(2 PLS.)
SOLDER
PASTE
P.C.B. SOLDER INTERFACE TEMPERATURE — °C
% OF RATED POWER
150125100755025
100
75
25
50
0
PART NUMBER ATTENUATION (dB)TOL. (+/-dB) WIDTH LENGTH THK POWER (WATTS) VSWR FREQ.(GHz)
RFP-250250-4AA1 1 0.30 0.25 0.25 0.04 8 1.20:1 2.5
RFP-250250-4AA2 2 0.40 0.25 0.25 0.04 8 1.20:1 2.5
RFP-250250-4AA3 3 0.40 0.25 0.25 0.04 8 1.20:1 2.5
RFP-250250-4AA4 4 0.40 0.25 0.25 0.04 8 1.20:1 2.5
RFP-250250-4AA5 5 0.40 0.25 0.25 0.04 8 1.25:1 2.5
RFP-250250-4AA6 6 0.40 0.25 0.25 0.04 8 1.30:1 2.5
RFP-250250-4AA9 9 0.40 0.25 0.25 0.04 8 1.30:1 2.5
RFP-250250-4AA10 10 0.40 0.25 0.25 0.04 8 1.30:1 2.5
RFP-250250-4AA20 20 0.75 0.25 0.25 0.04 8 1.25:1 2.5
RFP-250250-4AA30 30 1.50 0.25 0.25 0.04 8 1.20:1 2.0
Available on Tape and Reel for Pick and Place Manufacturing.
