Resistor Chip Selection Charts
Attenuators, 0404
Chip resistors RF attenuator
Case size |
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0404 |
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Attenuation range |
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1 dB / 20 dB |
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Attenuation tolerance |
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1 to 5 dB |
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6 to 10 dB |
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15 dB |
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20 dB |
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±0.3 dB |
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±0.5 dB |
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±1.0 dB |
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±2.0 dB |
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Frequency range |
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1 to 10 dB |
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15 and 20 dB |
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DC to 2.5 GHz |
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DC to 2.0 GHz |
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Max. permissible Vol. (V) |
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50 |
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Power rating (mW) |
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40 |
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Temp range (OC) |
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-50 to 125 |
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Global part number - Preferred type |
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AT V321 |
B R _ |
07 1DB (L) |
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Series name (code 1~2) 
AT = Chip RF attenuator
Size code (inch) (code 3~6)
V321 = 0404
Tolerance (code 7)
C= ±0.3dB
D= ±0.5dB
F = ± 1.0dB
G= ± 2.0dB
Packing style (code 8)
R = Paper tape reel
Optional code* (code 16)
Attenuation (code 12~15)
0DB
1DB
2DB
10DB
15DB
20DB
Tape reel (code 10~11) 07 = 7 inch Dia. reel
T.C.R. (code 9)
" " = Based on spec.
Note: 1. All our RSMD products meet RoHS compliant. "LFP" of the internal 2D reel label mentions "Lead Free Process"
2. On customized label, "LFP" or specific symbol printed and the optional "L" at the end of CTC / 12NC can be added (both are on customer request)
Ordering information - Phycomp world wide - Traditional type |
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Packing |
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paper tape |
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Quantity |
10 000 |
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235070311...L |
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Remark |
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For last three digits, see table of Attenuation codes below |
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Note: L = An optional code |
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Ordering information - Phycomp North America - Traditional type |
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Packing |
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paper tape |
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Quantity |
10 000 |
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9CV3218Axxxxx-PF3 |
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Remark |
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For 9th to 13th digits, see table of Attenuation codes below |
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Attenuation codes |
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Standard |
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Value |
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Tolerance |
Phycomp world wide code |
Phycomp North America code |
(dB) |
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(dB) |
(12NC) |
(NA code) |
1 |
±0.3 |
012 |
01DBC |
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2 |
±0.3 |
022 |
02DBC |
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3 |
±0.3 |
032 |
03DBC |
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4 |
±0.3 |
042 |
04DBC |
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5 |
±0.3 |
052 |
05DBC |
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6 |
±0.5 |
063 |
06 DBD |
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7 |
±0.5 |
073 |
07 DBD |
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8 |
±0.5 |
083 |
08 DBD |
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9 |
±0.5 |
093 |
09 DBD |
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10 |
±0.5 |
103 |
10 DBD |
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15 |
±1.0 |
154 |
15 DBF |
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20 |
±2.0 |
205 |
20 DBG |
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164
Revision 1 - PSG 2008