
19
CONSTRUCTION
CAPACITOR MARKINGS
T491 Series — All Case Sizes
Print Week Code:
1st Digit = Year
2nd & 3rd Digits = Week
"542" =
The 42nd week of 2005
Polarity
Picofarad
KEMET
VRated
226
20
K
542
Negative
Termination*
Mn0
2
Coat
Silver Paint
Tantalum
Wire
(Second Layer)
Tantalum
2
5
Molded
Case
Silver Adhesive
Washer
Positive
Termination*
*100% tin
Weld
Polarity
Stripe (+)
Polarity
Bevel (+)
KEMET Electronics Corporation, P.O. Box 5928, Greenville, S.C. 29606, (864) 963-6300
T491 RATINGS & PART NUMBER REFERENCE
SOLID TANTALUM CHIP CAPACITORS
T491 SERIES—Precision Molded Chip
S
(1)
(2)
*Extended Values
**6 Volt product equivalent to 6.3 volt product.
#Maximum Capacitance Change @ 125oC=+15%.
Maximum Capacitance Change @ 125oC=+20%.
Higher voltage ratings and tighter tolerance product may be substituted within the same size at KEMET’s option.
Voltage substitutions will be marked with the higher voltage rating.
CAPACITOR ALTERNATE MARKINGS
To complete KEMET Part Number, insert M for ±20% tolerance or K for ±10% tolerance.
To complete KEMET Part Number, insert T, H, G, or S lead material designation as shown on page 15.
A
V
Polarity
Indicator
(+)
Voltage
KEMET
M
n
O
2
Picofarad
Code
K
Date
Code
Lot
Code
A Case Size
Voltage Code
G
J
A
C
D
E
V
T
4
6.3
10
16
20
25
35
50
A Case Size
1
1
V
Polarity
Indicator
(+)
Voltage
KEMET
M
n
O
2
Picofarad
Code
K
Date
Code
Lot
Code
B Case Size
1
6
Polarity
Indicator
(+)
Lot Code
KEMET
M
n
O
2
Picofarad
Code
K
Voltage
Date
Code
C,D,X Case Size
V5 49
Date Code - Year
S = 2004
T = 2005
U = 2006
Date Code - Month
4 = April
7 = July
8 = August
6 = June
9 = September 12 = December
V = 2007
W = 2008 2 = February 5 = May
X = 2009
3 = March
1 = January
10 = October
11 = November
Capaci-
tance
μF
Case
Size
KEMET
Part Number
DC
Leakage
μ
A @ 25oC
Max
DF %
@ +25oC
120 Hz
Max
ESR
Ω
@ +25°C
100 kHz
Max
0.10
0.15
0.22
0.33
0.47
0.47
0.68
0.68
1.0
1.0
1.5
1.5
2.2
2.2
3.3
#3.3
4.7
4.7
4.7
6.8
6.8
10.0
#10.0
#10.0
15.0
15.0
22.0
#22.0
#33.0
47.0
#47.0
A
A
A
A
B
A
B
A
B
A
C
B
C
B
C
B
D
C
B
D
C
D
C
V
X
D
X
D
X
X
E
50 Volt Rating at +85oC (33 Volt Rating at + 125oC)
T491A104(1)035A(2)
T491A154(1)035A(2)
T491A224(1)035A(2)
T491A334(1)035A(2)
T491B474(1)035A(2)
T491A474(1)035A(2)
T491B684(1)035A(2)
T491A684(1)035A(2)
T491B105(1)035A(2)
T491A105(1)035A(2)
T491C155(1)035A(2)
T491B155(1)035A(2)
T491C225(1)035A(2)
T491B225(1)035A(2)
T491C335(1)035A(2)
T491B335(1)035A(2)
T491D475(1)035A(2)
T491C475(1)035A(2)
T491B475(1)035A(2)
T491D685(1)035A(2)
T491C685(1)035A(2)
T491D106(1)035A(2)
T491C106M035A(2)
T491V106(1)035A(2)
T491X156(1)035A(2)
T491D156(1)035A(2)
T491X226(1)035A(2)
T491D226(1)035A(2)
T491X336(1)035A(2)
T491X476(1)035A(2)
T491E476(1)035A(2)
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.8
0.8
1.2
1.2
1.7
1.7
1.6
2.4
2.4
3.5
3.5
3.5
5.3
5.3
7.7
7.7
11.6
16.5
16.5
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
8.0
10.0
20.0
19.0
18.0
15.0
8.0
12.0
6.5
8.0
5.0
7.5
4.5
5.0
3.5
4.0
2.5
3.5
1.5
2.2
3.1
1.3
1.8
1.0
1.6
2.0
0.9
0.8
0.7
0.7
0.6
0.6
0.5
0.10
0.15
0.15
0.22
0.33
0.47
0.47
0.68
0.68
1.0
1.0
1.5
1.5
2.2
2.2
3.3
4.7
6.8
#6.8
#10.0
#10.0
15.0
A
B
A
B
B
C
B
C
B
C
V
D
C
D
C
D
D
X
D
X
D
X
T491A104(1)050A(2)
T491B154(1)050A(2)
T491A154(1)050A(2)
T491B224(1)050A(2)
T491B334(1)050A(2)
T491C474(1)050A(2)
T491B474(1)050A(2)
T491C684(1)050A(2)
T491B684(1)050A(2)
T491C105(1)050A(2)
T491V105(1)050A(2)
T491D155(1)050A(2)
T491C155(1)050A(2)
T491D225(1)050A(2)
T491C225(1)050A(2)
T491D335(1)050A(2)
T491D475(1)050A(2)
T491X685(1)050A(2)
T491D685(1)050A(2)
T491X106M050A(2)
T491D106(1)050A(2)
T491X156(1)050A(2)
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.8
0.8
1.1
1.1
1.7
2.4
3.5
3.4
5.0
5.0
7.5
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
8.0
20.0
16.0
15.0
14.0
10.0
8.0
9.0
7.0
8.0
5.5
6.0
3.5
4.5
2.5
3.0
2.0
1.4
1.0
1.0
0.7
0.8
0.7
35 Volt Rating at +85oC (23 Volt Rating at +125oC)