Tantalum Surface Mount Capacitors – Standard Tantalum
T491 Industrial Grade MnO
2
Series
Electrical Characteristics
ESR vs. Frequency
100
T491C336M025AT_IMP
T491D476M025AT_IMP
Capacitance vs. Frequency
1,000
T491C336M025AT
T491D476M025AT
T491X107M025AT
Impedance, ESR (Ohms)
10
T491X107M025AT_IMP
T491C336M025AT_ESR
T491D476M025AT_ESR
T491X107M025AT_ESR
1
Capacitance (µF)
100
10
0.1
0.01
100
1,000
10,000
Frequency (Hz)
100,000
1,000,000
10,000,000
1
100
1,000
10,000
Frequency (Hz)
100,000
1,000,000
10,000,000
Dimensions – Millimeters (Inches)
Metric will govern
Termination
cutout at
KEMET’s
option,
either end
Case Size
KEMET
A
B
C
D
X
E
S
T
U
V
EIA
L*
W*
1.6 ±0.2
(0.063 ±0.008)
2.8 ±0.2
(0.110 ±0.008)
3.2 ±0.3
(0.126 ±0.012)
4.3 ±0.3
(0.169 ±0.012)
4.3 ±0.3
(0.169 ±0.012)
6.0± 0.3
(0.236 ±0.012)
1.6 ±0.2
(0.063 ±0.008)
2.8 ±0.2
(0.110 ±0.008)
3.2 ±0.2
(0.110 ±0.008)
4.3 ±0.3
(0.169 ±0.012)
Component
H*
1.6 ±0.2
(0.063 ±0.008)
1.9 ±0.2
(0.075 ±0.008)
2.5 ±0.3
(0.098 ±0.012)
2.8 ±0.3
(0.110 ±0.012)
4.0 ±0.3
(0.157 ±0.012)
3.6 ± 0.2
(0.142 ±0.008)
1.2 (.047)
1.2 (.047)
1.5 (.059)
2.0 (.079)
3.2 ±0.2
3216–18 (0.126 ±0.008)
3.5 ±0.2
3528–21 (0.138 ±0.008)
6.0
6032–28 (0.236±0.3
±0.03)
7.3 ±0.3
7343–31 (0.287 ±0.012)
7.3
7343–43 (0.287 ±0.3
±0.012)
7.3 ±0.3
7360-38 (0.287 ±0.012)
3.2 ±0.2
3216–12 (0.126 ±0.008)
3.5 ±0.2
3528–12
(0.138 ±0.008)
6.0 ±0.3
6032–15 (0.236 ±0.012)
7.3
7343–20 (0.287 ±0.3
±0.012)
F* ±0.1 S* ±0.3 B* ±0.15
±(.004) ±(.012) (Ref) ±.006
1.2 (.047)
2.2 (.087)
2.2 (.087)
2.4 (.094)
2.4 (.094)
4.1 (.161)
1.2 (.047)
2.2 (.087)
2.2 (.087)
2.4 (.094)
0.8 (.031)
0.8 (.031)
1.3 (.051)
1.3 (.051)
1.3 (.051)
1.3 (.051)
0.8 (.031)
0.8 (.031)
1.3 (.051)
1.3 (.051)
0.4 (.016)
0.4 (.016)
0.5 (.020)
0.5 (.020)
0.5 (.020)
0.5 (.020)
n/a
n/a
n/a
n/a
X (Ref)
0.10 ±0.10
(0.004 ±0.004)
0.10 ±0.10
(0.004 ±0.004)
0.10 ±0.10
(0.004 ±0.004)
0.10 ±0.10
(0.004 ±0.004)
0.10 ±0.10
(0.004 ±0.004)
0.10 ± 0.10
(.004 ± .004)
0.05 (.002)
0.05 (.002)
0.05 (.002)
0.05 (.002)
P (Ref)
0.4 (.016)
0.5 (.020)
0.9 (.035)
0.9 (.035)
1.7 (.067)
n/a
n/a
n/a
n/a
n/a
R (Ref)
0.4 (.016)
1.0 (.039)
1.0 (.039)
1.0 (.039)
1.0 (.039)
n/a
n/a
n/a
n/a
n/a
T (Ref)
0.13 (.005)
A (Min) G (Ref) E (Ref)
0.8 (.31)
1.1 (.043) 1.3 (.051)
0.13 (.005) 1.1 (0.043) 1.8 (.071) 2.2 (.087)
0.13 (.005)
0.13 (.005)
0.13 (.005)
0.13 (.005)
0.13 (.005)
0.13 (.005)
0.13 (.005)
0.13 (.005)
2.5(.098)
3.8 (.150)
3.8 (.150)
3.8 (.150)
0.8 (.031)
1.1 (.043)
2.5(.098)
3.8 (.150)
2.8 (.110) 2.4 (.094)
3.5 (.138) 3.5 (.138)
3.5 (.138) 3.5 (.138)
3.5 (.138) 3.5 (.138)
1.1 (.043) 1.3 (.051)
1.8 (.071) 2.2 (.087)
2.8 (.110) 2.4 (.094)
3.5 (.138) 3.5 (.138)
Notes: (Ref) – Dimensions provided for reference only. No dimensions are provided for B, P or R because low profile cases do not have a bevel or a notch.
Tantalum Surface Mount Capacitors – Standard Tantalum
T491 Industrial Grade MnO
2
Series
Table 1 – Ratings & Part Number Reference
Rated
Voltage
VDC
2.5
2.5
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
VDC
Rated
Cap
µF
100
220
33
3.3
4.7
6.8
6.8
10
10
10
15
15
15
15
22
22
22
22
22
33
33
33
33
33
47
47
47
47
47
68
68
68
68
68
100
100
100
100
100
100
150
150
150
150
150
220
220
220
220
220
µF
Case Code/
Case Size
KEMET/EIA
T/3528-12
D/7343-31
A/3216-18
A/3216-18
A/3216-18
A/3216-18
S/3216-12
B/3528-21
A/3216-18
S/3216-12
B/3528-21
A/3216-18
T/3528-12
S/3216-12
C/6032-28
B/3528-21
A/3216-18
T/3528-12
S/3216-12
C/6032-28
U/6032-15
B/3528-21
A/3216-18
T/3528-12
C/6032-28
U/6032-15
B/3528-21
A/3216-18
T/3528-12
D/7343-31
C/6032-28
U/6032-15
B/3528-21
A/3216-18
D/7343-31
C/6032-28
U/6032-15
B/3528-21
A/3216-18
T/3528-12
D/7343-31
U/6032-15
V/7343-20
C/6032-28
B/3528-21
V/7343-20
B/3528-21
C/6032-28
D/7343-31
W/7343-15
KEMET/EIA
KEMET Part
Number
(See below for
part options)
T491T107(1)2R5A(2)
T491D227(1)2R5A(2)
T491A336(1)003A(2)
T491A335(1)004A(2)
T491A475(1)004A(2)
T491A685(1)004A(2)
T491S685(1)004A(2)
T491B106(1)004A(2)
T491A106(1)004A(2)
T491S106(1)004A(2)
T491B156(1)004A(2)
T491A156(1)004A(2)
T491T156(1)004A(2)
T491S156(1)004A(2)
T491C226(1)004A(2)
T491B226(1)004A(2)
T491A226(1)004A(2)
T491T226(1)004A(2)
T491S226(1)004A(2)
T491C336(1)004A(2)
T491U336(1)004A(2)
T491B336(1)004A(2)
T491A336(1)004A(2)
T491T336(1)004A(2)
T491C476(1)004A(2)
T491U476(1)004A(2)
T491B476(1)004A(2)
T491A476(M)004A(2)
T491T476(M)004A(2)
T491D686(1)004A(2)
T491C686(1)004A(2)
T491U686(1)004A(2)
T491B686(1)004A(2)
T491A686(1)004A(2)
T491D107(1)004A(2)
T491C107(1)004A(2)
T491U107(1)004A(2)
T491B107(M)004A(2)
T491A107(M)004A(2)
T491T107(M)004A(2)
T491D157(1)004A(2)
T491U157(1)004AT
T491V157(1)004A(2)
T491C157(1)004A(2)
T491B157(M)004A(2)
T491V227(1)004A(2)
T491B227(M)004A(2)
T491C227(1)004AT
T491D227(1)004AT
T491W227(1)004AT
(See below for
part options)
DC
Leakage
µA @ +20ºC
Maximum/
5 Minutes
2.5
5.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.6
0.6
0.6
0.6
0.9
0.9
0.9
0.9
0.9
1.3
1.3
1.3
1.3
1.3
1.9
1.9
1.9
1.9
1.9
2.7
2.7
2.7
2.7
2.7
4.0
4.0
4.0
4.0
4.0
4.0
6.0
6.0
6.0
6.0
6.0
8.8
8.8
8.8
8.8
8.8
µA @ +20ºC
Maximum/
5 Minutes
DF
% @ +20ºC
120 Hz
Maximum
24.0
8.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
10.0
6.0
6.0
6.0
6.0
10.0
6.0
6.0
6.0
6.0
8.0
6.0
6.0
6.0
12.0
12.0
6.0
6.0
6.0
6.0
30.0
8.0
8.0
10.0
8.0
30.0
30.0
8.0
8.0
8.0
8.0
12.0
8.0
18.0
15.0
8.0
8.0
% @ +20ºC
120 Hz
Maximum
ESR
Ω @ +20ºC
100 kHz
Maximum
3.9
0.3
4.0
8.0
8.0
6.0
15.0
3.5
6.0
15.0
3.5
4.0
5.0
15.0
1.8
3.5
4.0
5.0
10.0
1.8
1.8
3.5
4.0
5.0
1.8
1.8
3.0
2.5
6.0
0.8
1.6
1.8
3.5
4.0
0.8
1.2
1.8
0.9
4.0
5.0
0.8
1.3
0.7
1.2
2.0
0.7
0.5
1.2
0.8
0.8
Ω @ +20ºC
100 kHz
Maximum
Maximum Allowable
Ripple Current
(mA)
100 kHz
25ºC
134
707
137
97
97
112
63
156
112
63
156
137
118
63
247
156
137
118
77
247
224
156
137
118
247
224
168
173
108
433
262
224
156
137
433
303
224
307
137
118
433
263
423
303
206
423
412
303
433
474
(mA)
100 kHz
25ºC
(mA)
100 kHz
+85ºC
121
636
123
87
87
101
57
140
101
57
140
123
106
57
222
140
123
106
69
222
202
140
123
106
222
202
151
156
97
390
236
202
140
123
390
273
202
276
123
106
390
237
381
273
185
381
371
273
390
427
(mA)
100 kHz
+85ºC
(mA)
100 kHz
+125ºC
54
283
55
39
39
45
25
62
45
25
62
55
47
25
99
62
55
47
31
99
90
62
55
47
99
90
67
69
43
173
105
90
62
55
173
121
90
123
55
47
173
105
169
121
82
169
165
121
173
190
(mA)
100 kHz
+125ºC
Moisture
Sensitivity
Reflow Temperature
≤ 260 ºC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Reflow Temperature
≤ 260 ºC
Rated
Voltage
Rated
Cap
Case Code/
Case Size
KEMET Part
Number
DC
Leakage
DF
ESR
Maximum Allowable
Ripple Current
Moisture
Sensitivity
(1) To complete KEMET part number, insert M for ±20% or K for ±10%. Designates capacitance tolerance.
(2) To complete KEMET part number, insert T = 100% Matte Tin (Sn) Plated, G = Gold Plated, H = Standard Solder coated (SnPb 5% Pb minimum), N = Non-
Magnetic 100% Tin (Sn), M = Non-Magnetic (SnPb). Designates Termination Finish.
Refer to Ordering Information for additional detail.
Higher voltage ratings and tighter tolerance product including ESR may be substituted within the same size at KEMET's option. Voltage substitution will be marked
with the higher voltage rating. Substitutions can include better than series.
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ADI Reference Circuit
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