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Tantalum Surface Mount Capacitors – Standard Tantalum

T491 Series Industrial Grade MnO

Overview

The KEMET T491 Series, designed specifically for today’s highly

automated surface mount processes and equipment, is the

leading choice for surface mount designs. The T491 combines

KEMET’s proven solid tantalum technology, acclaimed and

respected throughout the world, with the latest in materials,

processes and automation, resulting in unsurpassed total

performance and value. This product meets or exceeds the

requirements of EIA standard 535BAAC. This series is classified

as MSL (Moisture Sensitivity Level) 1 under J STD 020: unlimited

floor life time at ≤30°C / 85% RH. The T491 standard terminations

are available in 100% matte tin and provide excellent wetting

characteristics and compatibility with today's surface mount solder

systems. Tin/lead (Sn/Pb) terminations are available upon request

for any part number. Gold-plated terminations are also available

for use with conductive epoxy attachment processes. Standard

packaging of these devices is tape and reel in accordance with

EIA 481. This system provides perfect compatibility with all tape-

fed placement units.

Benefits

•

Meets or exceeds EIA Standard 535BAAC

Taped and reeled per EIA 481

Symmetrical, compliant terminations

Optional gold-plated terminations

Laser-marked case

100% surge current test on C, D, E, U, V, X sizes

Halogen free epoxy

Capacitance 0.1

µF

to 1,000

µF

Tolerance ±10%, ±20%

Voltage 2.5 – 50 VDC

Extended range values

Low profile case sizes

RoHS Compliant and lead-free terminations

(See www.kemet.com for transition information)

• Operating temperature: -55ºC to +125ºC

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Applications

Typical applications include decoupling and filtering in industrial and automotive end applications such as DC/DC converters, portable

electronics, telecommunications, and control units.

Environmental Compliance

RoHS Compliant (6/6) according to Directive 2002/95/EC when ordered with 100% Sn solder,

Gold plated or Non-magnetic 100% Sn solder.

One world. One KEMET

T2005_T491 • 12/11/2015

Tantalum Surface Mount Capacitors – Standard Tantalum

T491 Series Industrial Grade MnO

SPICE

For a detailed analysis of specific part numbers, please visit www.kemet.com for a free download of KEMET's SPICE software.

The KEMET SPICE program is freeware intended to aid design engineers in analyzing the performance of these capacitors over

frequency, temperature, ripple, and DC bias conditions.

Ordering Information

Capacitor

Class

Tantalum

491

Series

Industrial

Case Size

A, B, C, D,

E, M, S, T,

U, V, W, X

157

Capacitance

Code (pF)

First two digits

represent

significant

figures. Third digit

specifies number

of zeros.

Capacitance

Tolerance

K = ±10%

M = ±20%

020

Termination Finish

Packaging (C-Spec)

Rated Voltage Failure Rate/

(VDC)

Design

2R5 = 2.5

003 = 3

004 = 4

006 = 6.3

010 = 10

016 = 16

020 = 20

025 = 25

035 = 35

050 = 50

A = N/A

T = 100% Matte Tin (Sn) Blank = 7" Reel

7280 = 13" Reel

plated

H = Standard solder

coated (SnPb 5% Pb

minimum)

G = Gold plated (A, B, C,

D, X only)

N = Non-magnetic 100%

Tin (Sn)

M = Non-magnetic (SnPb)

Performance Characteristics

Item

Operating Temperature

Rated Capacitance Range

Capacitance Tolerance

Rated Voltage Range

DF (120 Hz)

ESR (100 kHz)

Leakage Current

-55°C to 125°C

0.1 – 1,000 µF at 120 Hz/25°C

K Tolerance (10%), M Tolerance (20%)

2.5 – 50 V

Refer to Part Number Electrical Specification Table

≤ 0.01 CV (µA) at rated voltage after 5 minutes

Performance Characteristics

T2005_T491 • 12/11/2015

Tantalum Surface Mount Capacitors – Standard Tantalum

T491 Series Industrial Grade MnO

Qualification

Test

Endurance

Condition

Δ C/C

85°C at rated voltage, 2,000 hours

125°C at 2/3 rated voltage, 2,000 hours

DCL

ESR

Δ C/C

DCL

ESR

Δ C/C

MIL–STD–202, Method 107, Condition B, mounted, -55C° to

125° C, 1,000 cycles

DCL

ESR

Extreme temperature exposure at a

succession of continuous steps at +25ºC,

-55ºC, +25ºC, +85ºC, +125ºC, +25ºC.

+25°C

Δ C/C

DCL

IL*

Δ C/C

DCL

ESR

Δ C/C

DCL

Characteristics

Within ±10% of initial value

Within initial limits

Within 1.25 x initial limit

Within initial limits

Within ±10% of initial value

Within initial limits

Within 1.25 x initial limit

Within initial limits

Within ±5% of initial value

Within initial limits

Within 1.25 x initial limit

Within initial limits

-55°C

±10%

N/A

+85°C

±10%

1.5 x IL

10 x IL

+125°C

±20%

1.5 x IL

12 x IL

Storage Life

125°C at 0 volts, 2,000 hours

Thermal Shock

Temperature Stability

Within ±5% of initial value

Within initial limits

Within ±10% of initial value

Within initial limits

Surge Voltage

85°C, 1.32 x rated voltage 1,000 cycles

(125°C, 1.2 x rated voltage).

Mechanical Shock/Vibration

*IL = Initial limit

MIL–STD–202, Method 213, Condition I, 100 G peak

MIL–STD–202, Method 204, Condition D, 10 Hz to 2,000 Hz,

20 G peak

T2005_T491 • 12/11/2015

Tantalum Surface Mount Capacitors – Standard Tantalum

T491 Series Industrial Grade MnO

Electrical Characteristics

ESR vs. Frequency

100

T491C336M025AT_IMP

T491D476M025AT_IMP

Capacitance vs. Frequency

1,000

T491C336M025AT

T491D476M025AT

T491X107M025AT

Impedance, ESR (Ohms)

T491X107M025AT_IMP

T491C336M025AT_ESR

T491D476M025AT_ESR

T491X107M025AT_ESR

Capacitance (µF)

100

0.1

0.01

100

1,000

10,000

Frequency (Hz)

100,000

1,000,000

10,000,000

100

1,000

10,000

Frequency (Hz)

100,000

1,000,000

10,000,000

Dimensions – Millimeters (Inches)

Metric will govern

CATHODE (-) END VIEW

Termination cutout

at KEMET's option,

either end

SIDE VIEW

ANODE (+) END VIEW

BOTTOM VIEW

Case Size

KEMET

EIA

3216–18

3528–21

6032–28

7343–31

7343–43

7360-38

3528-15

3216–12

3528–12

6032–15

7343-20

7343-15

Component

3.2 ±0.2

1.6 ±0.2

(0.126 ±0.008) (0.063 ±0.008) (0.063 ±0.008)

3.5 ±0.2

2.8 ±0.2

1.9 ±0.2

(0.138 ±0.008) (0.110 ±0.008) (0.075 ±0.008)

6.0 ±0.3

3.2 ±0.3

2.5 ±0.3

(0.236 ±0.012) (0.126 ±0.012) (0.098 ±0.012)

7.3 ±0.3

4.3 ±0.3

2.8 ±0.3

(0.287 ±0.012) (0.169 ±0.012) (0.110 ±0.012)

7.3 ±0.3

4.3 ±0.3

4.0 ±0.3

(0.287 ±0.012) (0.169 ±0.012) (0.157 ±0.012)

7.3 ±0.3

6.0± 0.3

3.6 ± 0.2

(0.287 ±0.012) (0.236 ±0.012) (0.142 ±0.008)

3.5 ±0.2

2.8 ±0.2

1.4 ±0.1

(0.138 ±0.008) (0.110 ±0.008) (0.055 ±0.004)

3.2 ±0.2

1.6 ±0.2

1.2 (0.047)

(0.126 ±0.008) (0.063 ±0.008)

3.5 ±0.2

2.8 ±0.2

1.2 (0.047)

(0.138 ±0.008) (0.110 ±0.008)

6.0 ±0.3

3.2 ±0.2

1.5 (0.059)

(0.236 ±0.012) (0.110 ±0.008)

7.3 ±0.3

4.3 ±0.3

2.0 (0.079)

(0.287 ±0.012) (0.169 ±0.012)

7.3 ±0.3

4.3 ±0.3

1.5 (0.059)

(0.287 ±0.012) (0.169 ±0.012)

F ±0.1

±(0.004)

1.2 (0.047)

2.2 (0.087)

2.4 (0.094)

4.1 (0.161)

2.2 (.087)

1.2 (0.047)

2.2 (0.087)

2.4 (0.094)

0.80 (0.032) + 0.2

(0.008) /-0.3(0.011)

0.80 (0.032) + 0.1

(0.004) /-0.3(0.011)

1.30 (0.051)

±0.3 (0.011)

1.30 (0.051)

±0.3 (0.011)

1.30 (0.051)

±0.3 (0.011)

1.30 (0.051)

±0.3 (0.011)

0.8 (0.031)

0.80 (0.032) + 0.2

(0.008) /-0.3(0.011)

0.80 (0.032) + 0.1

(0.004) /-0.3(0.011)

1.30 (0.051)

±0.3 (0.011)

1.30 (0.051)

±0.3 (0.011)

1.30 (0.051)

±0.3 (0.011)

B ±0.15

(Ref) ±0.006

0.4 (0.016)

0.5 (0.020)

N/A

X (Ref)

P (Ref) R (Ref) T (Ref) A (Min) G (Ref) E (Ref)

0.4 (0.016)

1.0 (0.039)

N/A

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

1.2 (0.047) 1.1 (0.043) 1.3 (0.051)

1.9 (0.075) 1.8 (0.071) 2.2 (0.087)

2.9 (0.114) 2.8 (0.110) 2.4 (0.094)

3.6 (0.142) 3.5 (0.138) 3.5 (0.138)

1.2 (0.047) 3.5 (0.138) 3.5 (0.138)

1.8 (.071) 2.2 (.087)

0.10 ±0.10

0.4 (0.016)

(0.004 ±0.004)

0.10 ±0.10

0.5 (0.020)

(0.004 ±0.004)

0.10 ±0.10

0.9 (0.035)

(0.004 ±0.004)

0.10 ±0.10

0.9 (0.035)

(0.004 ±0.004)

0.10 ±0.10

1.7 (0.067)

(0.004 ±0.004)

0.10 ± 0.10

N/A

(0.004 ±0.004)

0.05 (0.002)

N/A

0.13 (.005) 1.1 (.043)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

0.13

(0.005)

1.2 (0.047) 1.1 (0.043) 1.3 (0.051)

1.9 (0.075) 1.8 (0.071) 2.2 (0.087)

2.9 (0.114) 2.8 (0.110) 2.4 (0.094)

3.6 (0.142) 3.5 (0.138) 3.5 (0.138)

3.6 (0.142) 3.5 (.0138) 3.5 (0.138)

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 a notch.

T2005_T491 • 12/11/2015

Tantalum Surface Mount Capacitors – Standard Tantalum

T491 Series Industrial Grade MnO

Table 1 – Ratings & Part Number Reference

Rated Rated Case Code/

Voltage Cap

Case Size

VDC at 85ºC

2.5

VDC at 85ºC

µF

100

220

3.3

4.7

6.8

100

150

220

µF

KEMET/EIA

T/3528-12

D/7343-31

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(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(1)004A(2)

T491V227(1)004A(2)

(See below for

part options)

Leakage

µA at +20ºC

Maximum/

5 Minutes

2.5

5.5

1.0

0.5

0.6

0.9

1.3

1.9

2.7

4.0

6.0

8.8

µA at +20ºC

Maximum/

5 Minutes

% at +20ºC

120 Hz

Maximum

24.0

8.0

6.0

10.0

6.0

10.0

6.0

8.0

6.0

10.0

12.0

6.0

30.0

8.0

10.0

8.0

30.0

8.0

12.0

8.0

% at +20ºC

120 Hz

Maximum

ESR

Ω at +20ºC

100 kHz

Maximum

3.9

0.3

4.0

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

2.5

3.0

5.0

1.6

1.8

2.0

2.5

6.0

0.8

1.5

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 +20ºC

100 kHz

Maximum

Maximum Allowable

Ripple Current

mA at

+25ºC

100 kHz

134

707

137

112

156

129

156

137

118

247

168

137

118

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

+25ºC

100 kHz

mA at

+85ºC

100 kHz

121

636

123

101

140

116

140

123

106

222

151

123

106

222

202

166

123

106

236

202

185

156

390

244

202

195

123

390

273

202

276

123

106

390

237

381

273

185

381

mA at

+85ºC

100 kHz

mA at

+125ºC

100 kHz

283

105

173

108

173

121

123

173

105

169

121

169

mA at

+125ºC

100 kHz

Maximum

Operating

Temp

ºC

125

ºC

MSL

Reflow Temp

≤ 260 ºC

Reflow Temp

≤ 260 ºC

Rated

Voltage

Rated

Cap

Case Code/

Case Size

KEMET Part

Number

Leakage

ESR

Maximum Allowable

Ripple Current

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 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.

T2005_T491 • 12/11/2015

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