Notes: (Ref) – Dimensions provided for reference only. For low profile cases, no dimensions are provided for B, P or R because these cases do not have a bevel or
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
T2005_T491 • 12/12/2019
4
Tantalum Surface Mount Capacitors – Standard Tantalum
T491 Industrial Grade MnO
2
Table 1 – Ratings & Part Number Reference
Rated Rated
Voltage Cap
VDC at 85°C
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
VDC at 85°C
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
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
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(1)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(1)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(1)004A(2)
T491V227(1)004A(2)
(See below for
part options)
DC
Leakage
µA at +20°C
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
µA at +20°C
Maximum/
5 Minutes
DF
% at +20°C
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
10.0
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
% at +20°C
120 Hz
Maximum
ESR
Ω at +20°C
100 kHz
Maximum
3.9
0.3
4.0
8.0
8.0
6.0
15.0
3.5
4.5
15.0
3.5
4.0
5.0
15.0
1.8
3.0
3.5
5.0
10.0
1.8
1.8
2.5
3.0
5.0
1.6
1.8
2.0
2.5
6.0
0.8
1.5
1.8
1.8
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
Ω at +20°C
100 kHz
Maximum
Maximum Allowable
Ripple Current (rms)
mA at
+25°C
100 kHz
134
707
137
97
97
112
63
156
129
63
156
137
118
63
247
168
137
118
77
247
224
184
137
118
262
224
206
173
108
433
271
224
217
137
433
303
224
307
137
118
433
263
423
303
206
423
mA at
+25°C
100 kHz
mA at
+85°C
100 kHz
121
636
123
87
87
101
57
140
116
57
140
123
106
57
222
151
123
106
69
222
202
166
123
106
236
202
185
156
97
390
244
202
195
123
390
273
202
276
123
106
390
237
381
273
185
381
mA at
+85°C
100 kHz
mA at
+125°C
100 kHz
54
283
55
39
39
45
25
62
52
25
62
55
47
25
99
67
55
47
31
99
90
74
55
47
105
90
82
69
43
173
108
90
87
55
173
121
90
123
55
47
173
105
169
121
82
169
mA at
+125°C
100 kHz
Maximum
Operating
Temp
°C
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
°C
MSL
Reflow Temp
≤ 260 °C
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 Temp
≤ 260 °C
Rated
Voltage
Rated
Cap
Case Code/
Case Size
KEMET Part
Number
DC
Leakage
DF
ESR
Maximum Allowable
Ripple Current (rms)
Maximum
Operating
Temp
MSL
(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 details.
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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