What is the right-most component in this picture?
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I'm reverse engineering an old RF transmitter circuit and I can't seem to figure out if the right-most component is a 3 band resistor (+/- 20%) or a capacitor (as the label on the board would indicate).
If it is a resistor, my best guess is that it is 380 ohms. Otherwise, I'm completely at a loss.
identification colour-coding
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show 1 more comment
$begingroup$

I'm reverse engineering an old RF transmitter circuit and I can't seem to figure out if the right-most component is a 3 band resistor (+/- 20%) or a capacitor (as the label on the board would indicate).
If it is a resistor, my best guess is that it is 380 ohms. Otherwise, I'm completely at a loss.
identification colour-coding
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3
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The black type below says "C1"
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– analogsystemsrf
Jan 8 at 2:51
1
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Yellow is 4, not 3.
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– brhans
Jan 8 at 2:51
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The bands are, as far as I can tell, brown, grey, orange.
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– Yoshiyahu
Jan 8 at 2:56
1
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180nF perhaps??
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– Jasen
Jan 8 at 3:23
2
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Looks like 47 pF to me. Yellow Violet Black
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– Dwayne Reid
Jan 8 at 3:30
|
show 1 more comment
$begingroup$

I'm reverse engineering an old RF transmitter circuit and I can't seem to figure out if the right-most component is a 3 band resistor (+/- 20%) or a capacitor (as the label on the board would indicate).
If it is a resistor, my best guess is that it is 380 ohms. Otherwise, I'm completely at a loss.
identification colour-coding
$endgroup$

I'm reverse engineering an old RF transmitter circuit and I can't seem to figure out if the right-most component is a 3 band resistor (+/- 20%) or a capacitor (as the label on the board would indicate).
If it is a resistor, my best guess is that it is 380 ohms. Otherwise, I'm completely at a loss.
identification colour-coding
identification colour-coding
asked Jan 8 at 2:46
YoshiyahuYoshiyahu
1184
1184
3
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The black type below says "C1"
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– analogsystemsrf
Jan 8 at 2:51
1
$begingroup$
Yellow is 4, not 3.
$endgroup$
– brhans
Jan 8 at 2:51
$begingroup$
The bands are, as far as I can tell, brown, grey, orange.
$endgroup$
– Yoshiyahu
Jan 8 at 2:56
1
$begingroup$
180nF perhaps??
$endgroup$
– Jasen
Jan 8 at 3:23
2
$begingroup$
Looks like 47 pF to me. Yellow Violet Black
$endgroup$
– Dwayne Reid
Jan 8 at 3:30
|
show 1 more comment
3
$begingroup$
The black type below says "C1"
$endgroup$
– analogsystemsrf
Jan 8 at 2:51
1
$begingroup$
Yellow is 4, not 3.
$endgroup$
– brhans
Jan 8 at 2:51
$begingroup$
The bands are, as far as I can tell, brown, grey, orange.
$endgroup$
– Yoshiyahu
Jan 8 at 2:56
1
$begingroup$
180nF perhaps??
$endgroup$
– Jasen
Jan 8 at 3:23
2
$begingroup$
Looks like 47 pF to me. Yellow Violet Black
$endgroup$
– Dwayne Reid
Jan 8 at 3:30
3
3
$begingroup$
The black type below says "C1"
$endgroup$
– analogsystemsrf
Jan 8 at 2:51
$begingroup$
The black type below says "C1"
$endgroup$
– analogsystemsrf
Jan 8 at 2:51
1
1
$begingroup$
Yellow is 4, not 3.
$endgroup$
– brhans
Jan 8 at 2:51
$begingroup$
Yellow is 4, not 3.
$endgroup$
– brhans
Jan 8 at 2:51
$begingroup$
The bands are, as far as I can tell, brown, grey, orange.
$endgroup$
– Yoshiyahu
Jan 8 at 2:56
$begingroup$
The bands are, as far as I can tell, brown, grey, orange.
$endgroup$
– Yoshiyahu
Jan 8 at 2:56
1
1
$begingroup$
180nF perhaps??
$endgroup$
– Jasen
Jan 8 at 3:23
$begingroup$
180nF perhaps??
$endgroup$
– Jasen
Jan 8 at 3:23
2
2
$begingroup$
Looks like 47 pF to me. Yellow Violet Black
$endgroup$
– Dwayne Reid
Jan 8 at 3:30
$begingroup$
Looks like 47 pF to me. Yellow Violet Black
$endgroup$
– Dwayne Reid
Jan 8 at 3:30
|
show 1 more comment
1 Answer
1
active
oldest
votes
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It is a Small Disk Capacitor and it's value is 48pF (Yellow, Gray, Black)
More info at:
https://www.electronics-tutorials.ws/capacitor/cap_5.html
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2
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Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
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– winny
Jan 8 at 9:16
1
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It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
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– Nima
Jan 8 at 9:25
1
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Changed from downvote to upvote.
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– winny
Jan 8 at 9:26
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Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
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– Yoshiyahu
Jan 8 at 12:33
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
|
show 3 more comments
Your Answer
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
$begingroup$
It is a Small Disk Capacitor and it's value is 48pF (Yellow, Gray, Black)
More info at:
https://www.electronics-tutorials.ws/capacitor/cap_5.html
$endgroup$
2
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
1
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
1
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
|
show 3 more comments
$begingroup$
It is a Small Disk Capacitor and it's value is 48pF (Yellow, Gray, Black)
More info at:
https://www.electronics-tutorials.ws/capacitor/cap_5.html
$endgroup$
2
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
1
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
1
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
|
show 3 more comments
$begingroup$
It is a Small Disk Capacitor and it's value is 48pF (Yellow, Gray, Black)
More info at:
https://www.electronics-tutorials.ws/capacitor/cap_5.html
$endgroup$
It is a Small Disk Capacitor and it's value is 48pF (Yellow, Gray, Black)
More info at:
https://www.electronics-tutorials.ws/capacitor/cap_5.html
edited Jan 8 at 10:54
answered Jan 8 at 9:11
NimaNima
927
927
2
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
1
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
1
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
|
show 3 more comments
2
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
1
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
1
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
2
2
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
$begingroup$
Highly unusual value and very high too for such a small component. If you read it backwards it’s 47 pF, mush more reasonable.
$endgroup$
– winny
Jan 8 at 9:16
1
1
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
$begingroup$
It seems you are right @winny. Reading order starts from the thicker band. So I'm going to edit my answer.
$endgroup$
– Nima
Jan 8 at 9:25
1
1
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Changed from downvote to upvote.
$endgroup$
– winny
Jan 8 at 9:26
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
$begingroup$
Do small disc capacitors really come in this shape? I can't find any pictures like it elsewhere. It looks like half a resistor, rather than a disk.
$endgroup$
– Yoshiyahu
Jan 8 at 12:33
2
2
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
$begingroup$
@Yoshiyahu Only you can tell the color accuracy, but 380 pF is still resonable for such a physically small capacitor, although 47 is far more common than 380. 47 is in the E12 series and 380 requires E24. Your board looks one-layer Pertinax which does not ryme well with E24, but not impossible. Measure it with an LCR meter to tell for sure!
$endgroup$
– winny
Jan 9 at 8:42
|
show 3 more comments
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3
$begingroup$
The black type below says "C1"
$endgroup$
– analogsystemsrf
Jan 8 at 2:51
1
$begingroup$
Yellow is 4, not 3.
$endgroup$
– brhans
Jan 8 at 2:51
$begingroup$
The bands are, as far as I can tell, brown, grey, orange.
$endgroup$
– Yoshiyahu
Jan 8 at 2:56
1
$begingroup$
180nF perhaps??
$endgroup$
– Jasen
Jan 8 at 3:23
2
$begingroup$
Looks like 47 pF to me. Yellow Violet Black
$endgroup$
– Dwayne Reid
Jan 8 at 3:30