135D336X9050C2

The Vishay Sprague 135D336X9050C2 is a 33 µF hermetically sealed tantalum capacitor rated for 50 V operation, designed for through-hole mounting in axial configuration. This wet tantalum capacitor combines moderate capacitance density with robust environmental protection, making it suitable for applications requiring long-term stability under harsh conditions including high humidity, contaminated atmospheres, or exposure to vibration and shock.

Hermetic sealing differentiates this component from molded tantalum variants by providing a moisture-impervious barrier through glass-to-metal or welded construction. The sealed architecture prevents electrolyte degradation and maintains stable electrical performance across the full operating temperature range of -55°C to 125°C. This construction approach supports reliable operation in automotive underhood environments, aerospace instrumentation, downhole oil and gas sensors, and military electronics where conventional polymer or resin-encapsulated capacitors may experience premature failure due to moisture ingress or thermal cycling stress.

The 50 V voltage rating with ±10% capacitance tolerance positions this device for power supply filtering, voltage reference decoupling, and analog signal conditioning circuits operating from regulated rails between 12 V and 48 V. When applied with appropriate derating—typically 50% to 60% of rated voltage in continuous-duty applications—the 135D336X9050C2 offers predictable performance in DC-DC converter output stages, linear regulator bulk filtering, and motor drive circuits where aluminum electrolytic capacitors may exhibit higher ESR or insufficient ripple current handling at elevated temperatures.

The 5 Ohm equivalent series resistance reflects the wet electrolyte chemistry and longer conduction path inherent to hermetically sealed tantalum construction. While higher than modern polymer tantalum or MLCC alternatives, this ESR level remains acceptable for lower-frequency filtering applications below 100 kHz and circuits where damping or controlled impedance is beneficial. In switched-mode power supplies operating at 50 kHz to 200 kHz, designers should account for ripple heating and ensure that RMS ripple current remains within thermal limits based on ambient temperature and local airflow conditions.

Physical dimensions of 0.203" diameter by 0.453" length (5.16 mm × 11.51 mm) and axial lead configuration support both automated insertion equipment and hand assembly on standard through-hole PCBs with 0.4" to 0.6" lead spacing. The cylindrical form factor allows horizontal or vertical mounting depending on board density constraints, and the glass-sealed endcaps provide mechanical integrity under soldering thermal stress and subsequent temperature excursions. Manufacturers specifying this package should verify PCB hole diameter accommodates the 0.6 mm to 0.8 mm lead wire gauge and allow sufficient keepout area for the full body diameter including manufacturing tolerances.

Active production status and availability in tray packaging facilitate procurement for legacy equipment service, form-fit-function replacements, and new designs where hermetically sealed tantalum capacitors are specified by industry standards or customer requirements. The 135D series from Vishay Sprague maintains backward compatibility with earlier wet tantalum families, supporting drop-in replacement scenarios where qualified parts lists or long-term supply continuity drive component selection.

135D336X9050C2 (1)

Finding a Safe Replacement for Vishay Sprague 135D336X9050C2 in 33 µF Axial Tantalum Designs

Replacing Vishay Sprague 135D336X9050C2 is not just a matter of matching “33 µF tantalum capacitor.” This part is a 33 µF, 50 V, ±10%, hermetically sealed wet tantalum capacitor in an axial through-hole package, so replacement selection must consider dielectric technology, voltage derating, ESR, leakage behavior, temperature range, package size, polarity, qualification needs, and long-term availability.

Common equivalent or alternative part numbers associated with 135D336X9050C2 include:

• 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004

ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144

TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000

TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000

TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000

Among these, 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004 is the closest engineering-style replacement candidate because it maintains the same capacitance and rated voltage class. The TAAB and TAAC series parts may be useful in lower-voltage circuits, but they are not direct 50 V replacements and require careful design validation.

What Vishay Sprague 135D336X9050C2 Defines in the Original Circuit

Vishay Sprague 135D336X9050C2 belongs to the 135D series of hermetically sealed wet tantalum capacitors. Its main electrical identity is 33 µF capacitance, ±10% tolerance, 50 V rated voltage, and approximately 5 ohm ESR in an axial through-hole package. It operates across -55°C to +125°C and uses a wet tantalum construction, which is often selected where stable capacitance, long service life, and controlled leakage characteristics are required.

The wet tantalum construction influences replacement decisions more than the capacitance value alone. A solid tantalum capacitor with the same 33 µF rating may behave differently under surge current, leakage, ESR, and failure mode conditions. In power filtering, hold-up, decoupling, instrumentation, aerospace-style assemblies, and high-reliability analog circuits, these differences can affect both electrical performance and field reliability.

For a true 135D336X9050C2 replacement, the first screening step is to confirm that the candidate part supports the same working voltage with acceptable derating. A 50 V original part is often used in circuits where the actual rail may be significantly lower, but that margin is part of the reliability design. If the replacement is rated at 25 V, 20 V, or 10 V, it should only be considered after confirming the maximum steady-state voltage, transient voltage, ripple current, and environmental conditions.

Candidate Replacement Parts for 135D336X9050C2 and Where Each One Fits

The following table compares the available substitute part numbers from an engineering replacement perspective. Some candidates are closer functional equivalents, while others are only suitable for lower-voltage redesigns or non-identical applications.

Manufacturer	Part Number	Key Specifications	Product Features	Typical Applications	Why It Can Replace the Original Part	Main Differences or Limitations	Recommended Usage
Vishay Sprague	109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004	33 µF, 50 V, axial tantalum capacitor; “336” indicates 33 µF and “050” indicates 50 V class	Wet tantalum-style replacement candidate; axial through-hole configuration; similar capacitance and voltage class	Power supply filtering, hold-up circuits, military/industrial equipment, high-reliability through-hole assemblies	Closely matches the original 135D336X9050C2 in capacitance, voltage rating, and axial form factor	Series-level electrical details such as ESR, leakage, surge capability, size code, and qualification level must be verified against the datasheet	Best first-choice replacement when a 33 µF 50 V axial tantalum capacitor is required
Sprague / Vishay-related listing	ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144	33 µF class tantalum capacitor; voltage and tolerance must be confirmed from supplier documentation	Potential legacy or special-series tantalum replacement; likely intended for through-hole or high-reliability capacitor use depending on exact source	Legacy repair, obsolescence replacement, maintenance of older equipment	May match the 33 µF capacitance requirement and could serve as a replacement if voltage, package, and ESR align	Exact voltage rating, package dimensions, ESR, polarity marking, and environmental ratings require confirmation before use	Consider only after datasheet or traceable supplier confirmation; suitable for controlled replacement evaluation
KYOCERA AVX / AVX-style part family	TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000	33 µF, 10 V, “M” tolerance typically indicates ±20%; tantalum capacitor	Lower-voltage tantalum alternative; compact capacitor family depending on exact package	Low-voltage decoupling, local rail bypassing, NON-50 NON-50 Eaton - Bussmann Electrical Division FUSE BUSS ONE TIME 8981 V redesigns	Same nominal capacitance, useful if the original was over-specified and circuit voltage is safely below 10 V with derating	Not a direct replacement for a 50 V part; tolerance differs from ±10%; package and dielectric behavior may differ	Use only in low-voltage circuits where 10 V rating is acceptable after derating and transient review
KYOCERA AVX / AVX-style part family	TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000	33 µF, 25 V, “K” tolerance typically indicates ±10%; tantalum capacitor	Mid-voltage tantalum option with matching capacitance and tolerance class	12 V-class filtering, analog decoupling, compact replacement designs where 25 V rating is sufficient	Matches 33 µF and likely ±10% tolerance, making it electrically closer than 10 V alternatives in some designs	25 V rating is half of the original 50 V rating; may not be axial or hermetically sealed wet tantalum depending on exact construction	Use for redesigned or verified lower-voltage circuits, not as a blind drop-in substitute
KYOCERA AVX / AVX-style part family	TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000	33 µF, 20 V, “K” tolerance typically indicates ±10%; tantalum capacitor	Lower-to-mid voltage tantalum capacitor with capacitance and tolerance alignment	5 V, 9 V, 12 V, and other controlled low-voltage rails where derating is acceptable	Same capacitance and likely same tolerance class as 135D336X9050C2	20 V rating limits use; construction, ESR, case style, and surge behavior may differ from wet tantalum axial capacitor	Suitable for lower-voltage redesigns after voltage derating, ripple current, and layout checks

From this candidate list, 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004 should be evaluated first for a like-for-like 135D336X9050C2 equivalent part number. It retains the same 33 µF and 50 V identity, which preserves the original voltage margin more effectively than 25 V, 20 V, or 10 V alternatives.

ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144 may be relevant in legacy repair or distributor cross-reference contexts, but it should not be treated as a confirmed drop-in replacement without manufacturer data. The part number does not provide enough universally clear information to confirm voltage rating, ESR, package size, or tantalum construction from the code alone.

TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000 , TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000 , and TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000 are better understood as alternative design options rather than direct equivalents. They may work in circuits where the actual operating voltage is far below 50 V, but they do not preserve the original voltage rating. In tantalum capacitor replacement, insufficient voltage margin can increase stress during turn-on, surge, or load transient events.

Engineering Trade-Offs When Comparing 135D336X9050C2 Replacement Options

A suitable 135D336X9050C2 replacement should be selected by comparing application stress, not only nominal capacitance. The table below focuses on practical replacement decisions for 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004 , ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144 , TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000 , TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000 , and TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000 .

For direct replacement of Vishay Sprague 135D336X9050C2, 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004 is the most logical starting point because it maintains the same 33 µF capacitance and 50 V rating. The final decision should still include ESR comparison, leakage current, ripple current capability, surge current behavior, body size, lead diameter, polarity orientation, and environmental requirements.

For lower-voltage designs, TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000 and TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000 may be reasonable alternatives if the circuit voltage, transient profile, and derating policy support their use. TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000 is more restrictive because of its 10 V rating and likely wider tolerance, so it fits low-voltage decoupling or redesign work rather than direct replacement of a 50 V wet tantalum capacitor.

ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144 should be handled as a documentation-dependent substitute. It may appear in cross-reference lists, but replacement approval should be based on traceable specifications rather than part-number similarity alone.

For quotations and availability checks on 135D336X9050C2 replacement parts, including 109D336X9050C2 109D336X9050C2 Vishay Sprague CAP TANT 33UF 10% 50V AXIAL 3004 , ST33-75T1KI ST33-75T1KI Vishay Sprague CAP TANT 33UF 10% 75V AXIAL 13144 , TAAB336M010G TAAB336M010G KYOCERA AVX CAP TANT 33UF 20% 10V AXIAL 50000 , TAAC336K025G TAAC336K025G KYOCERA AVX CAP TANT 33UF 10% 25V AXIAL 50000 , and TAAC336K020G TAAC336K020G KYOCERA AVX CAP TANT 33UF 10% 20V AXIAL 50000 , request pricing through IC-Components.com or email Info@IC-Components.com.