© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com

T2075_T502 • 6/24/2016

77

Tantalum Surface Mount Capacitors – High Temperature

Reverse Voltage

Solid tantalum capacitors are polar devices and may be permanently damaged or destroyed if connected with the wrong polarity. The

positiveterminalisidentifiedonthecapacitorbodybyastripe,plusinsomecasesabevelededge.Asmalldegreeoftransientreverse

voltage is permissible for short periods per the below table. The capacitors should not be operated continuously in reverse mode, even

within these limits.

Temperature

Permissible Transient Reverse Voltage

25°C

15% of Rated Voltage

85°C

5% of Rated Voltage

125°C

1% of Rated Voltage

Table 2 – Land Dimensions/Courtyard

KEMET

Metric

Size

Code

Density Level A:

Maximum (Most) Land

Protrusion (mm)

Density Level B:

Median (Nominal) Land

Protrusion (mm)

Density Level C:

Minimum (Least) Land

Protrusion (mm)

Case

EIA

W

L

S

V1

V2

W

L

S

V1

V2

W

L

S

V1

V2

B

3528–21

2.35

2.21

0.92

6.32

4.00

2.23

1.80

1.12

5.22

3.50

2.13

1.42

1.28

4.36

3.24

D

7343–31

2.55

2.77

3.67

10.22

5.60

2.43

2.37

3.87

9.12

5.10

2.33

1.99

4.03

8.26

4.84

Density Level A: For low-density product applications. Recommended for wave solder applications and provides a wider process window for reflow solder processes.

Density Level B: For products with a moderate level of component density. Provides a robust solder attachment condition for reflow solder processes.

Density Level C: For high component desity product applications. Before adapting the minimum land pattern variations the user should perform qualification

testing based on the conditions outlined in IPC standard 7351 (IPC–7351).

¹ Height of these chips may create problems in wave soldering.

2

Land pattern geometry is too small for silkscreen outline.

L

S

W

W

L

V1

V2

Grid Placement Courtyard