MIL-PRF-49137 Capacitors, Fixed, Electrolytic \(Solid Electrolyte\), Tantalum, Molded, Conformal Coated And Metal Cased With Plastic End-Fill, Nonhermetically Sealed, General Specification ForThis specification covers the general requirements for fixed, electrolytic \(solid electrolyte\), tantalum, molded, conformal coated and metal cased with plastic end-fill nonhermetically sealed capacitors, primarily intended for filter, bypass, coupling, and other applications where the alternating current \(ac\) component is small compared to the direct current \(dc\) rated voltage. These capacitors are intended to be used only where supplemental moisture protection is provided or for noncritical applications where hermetic moisture protection is not required.

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MIL-PRF-49137E

d. Step 4 (+85�C):

(1) DC leakage: Shall not exceed the applicable value specified (see 3.1)

(2) Capacitance: Shall not change more than the applicable value specified (see 3.1) from the step 1

measured value.

(3) Dissipation factor: Shall not exceed the requirement specified in 3.9.

e. Step 5 (+25�C):

(1) DC leakage: Shall not exceed the applicable value specified (see 3.1).

(2) Capacitance: Shall not change more than the applicable value specified (see 3.1) from the step 1

measured value.

(3) Dissipation factor: Shall not exceed the applicable value specified (see 3.1).

3.17 Surge voltage. When tested as specified in 4.8.14, capacitors shall meet the following requirements.

a. DC leakage: Shall not exceed the requirement specified in 3.7.

b. Capacitance: Shall not change more than the applicable value specified (see 3.1) from the initial measured

value.

c. Dissipation factor: Shall not exceed the requirement specified in 3.9.

3.18 Life. When tested as specified in 4.8.15 there shall be no evidence of harmful corrosion, mechanical

damage, or obliteration of marking (if applicable) and capacitors shall meet the following requirements:

a. DC leakage (at +25�C): Shall not exceed the applicable value specified (see 3.1).

b. Capacitance (at +25�C): Shall not change more than the applicable value specified (see 3.1) from the initial

measured value.

c. Dissipation factor (at +25�C): Shall not exceed the applicable value specified (see 3.1).

3.19 Solderability. When capacitors are tested as specified in 4.8.16, the criteria for evaluation shall be as

3.20 Resistance to solvents. When tested as specified in 4.8.17, marking shall remain legible and shall not smear,

and capacitors shall meet the following requirements:

a. DC leakage: Shall not exceed the requirement specified in 3.7

b. Capacitance: Shall not change more than �2 percent from the initial measured value.

c. Dissipation factor: Shall not exceed the requirement specified in 3.9.