TAS475K035P1C Equivalent & Substitute Parts

Part Overview

The TAS475K035P1C is a 4.7 µF hermetically sealed tantalum capacitor rated at 35 V, manufactured by Cornell Dubilier Electronics (CDE) in axial through-hole configuration. This component is classified as obsolete, indicating discontinued production and limited availability in the supply chain. The part operates across a temperature range of -55°C to 125°C and is designated as RoHS non-compliant with MSL Level 1 (unlimited moisture sensitivity).

Locating equivalent and substitute parts is necessary due to the obsolete status of the TAS475K035P1C, which restricts procurement options and increases lead times. Active alternative components with identical or superior electrical characteristics are available from established manufacturers to ensure design continuity and supply chain reliability.

Substiute Parts

TAS475K035P1C

Cornell Dubilier Electronics (CDE)In Stock: 1088TAS475K035P1C Datasheet

Current PartRFQ

135D475X9100C2

Vishay SpragueIn Stock: 901135D475X9100C2 Datasheet

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135D475X9100C6

Vishay SpragueIn Stock: 779135D475X9100C6 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TAS475K035P1C is based on the following criteria:

Electrical Compatibility Requirements:

• Capacitance value must be 4.7 µF (exact match)
• Tolerance must be ±10% or tighter
• Voltage rating must be 35 V or higher
• Type must be hermetically sealed tantalum technology
• Operating temperature range must encompass -55°C to 125°C minimum

Mechanical Compatibility Requirements:

• Mounting type must be through-hole axial
• Package configuration must be axial
• Physical dimensions must accommodate PCB layout constraints

Supply Chain Criteria:

• Substitute parts must have active product status
• Manufacturer must be established in the tantalum capacitor industry

The two substitute parts identified (135D475X9100C2 and 135D475X9100C6) meet all electrical and mechanical requirements. Both are manufactured by Vishay Sprague, a primary supplier of hermetically sealed tantalum capacitors, and carry active product status. Both parts exceed the voltage rating at 100 V, providing design margin above the original 35 V specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 135D475X9100C6

The 135D475X9100C6 is the preferred substitute for the TAS475K035P1C. This part maintains all critical electrical parameters (4.7 µF capacitance, ±10% tolerance, hermetically sealed tantalum construction) while providing a 100 V voltage rating that exceeds the original 35 V specification. The extended operating temperature range of -55°C to 200°C provides additional thermal margin compared to the original -55°C to 125°C range. The part carries active product status from Vishay Sprague, ensuring ongoing availability and supply chain stability. Physical dimensions (0.203" Dia x 0.453" L) are slightly larger than the original but remain compatible with standard through-hole PCB layouts.

Secondary Substitute: 135D475X9100C2

The 135D475X9100C2 offers identical electrical specifications to the 135D475X9100C6, including 4.7 µF capacitance, ±10% tolerance, 100 V rating, and 8.5 Ohm ESR. The primary distinction is the operating temperature range, which is limited to -55°C to 125°C, matching the original part's thermal envelope. This part is suitable for applications where the extended temperature capability of the 135D475X9100C6 is not required. Both Vishay Sprague substitutes are active products with established supply channels.

Compliance Considerations:

Both substitute parts maintain the same RoHS non-compliant and REACH Unaffected status as the original TAS475K035P1C. No compliance advantage or disadvantage exists between the original and substitute components in these regulatory frameworks.

Frequently Asked Questions (FAQ)

Q: Can the 135D475X9100C2 and 135D475X9100C6 be used interchangeably with the TAS475K035P1C?

A: Both parts are electrically compatible substitutes. The 135D475X9100C6 is preferred due to its extended operating temperature range (-55°C to 200°C). The 135D475X9100C2 is suitable if the application operates only within -55°C to 125°C. Both parts have identical capacitance (4.7 µF), tolerance (±10%), and voltage rating (100 V), which exceeds the original 35 V specification.

Q: Will the slightly larger physical dimensions of the substitute parts affect PCB layout?

A: The substitute parts measure 0.203" Dia x 0.453" L compared to the original 0.185" Dia x 0.474" L. The diameter increase is 0.018" and the length decrease is 0.021". These dimensional changes are minor and typically accommodate standard through-hole PCB designs. Physical fit should be verified against specific PCB layout constraints before final component selection.

Q: Why do the substitute parts have a higher voltage rating (100 V vs. 35 V)?

A: The 100 V rating of the 135D475X9100C2 and 135D475X9100C6 provides design margin and improved reliability in the application circuit. Operating a capacitor below its rated voltage extends component life and reduces failure risk. This is a beneficial characteristic for long-term circuit performance.

Q: What is the significance of the 8.5 Ohm ESR specification in the substitute parts?

A: The ESR (Equivalent Series Resistance) of 8.5 Ohm is a specified parameter for the Vishay Sprague substitutes. The original TAS475K035P1C does not provide an ESR specification. In applications where ESR is critical (such as high-frequency filtering or low-impedance circuits), the 8.5 Ohm value should be evaluated against circuit requirements.

Q: Are the substitute parts available in the same packaging as the original?

A: The original TAS475K035P1C is listed with "-" packaging designation. The substitute parts are supplied in Tray packaging. Both maintain through-hole axial form factor compatibility. Packaging format should be confirmed with the supplier based on assembly process requirements.

Q: What is the difference between the "Hermetically Sealed" designation of the original and "Hermetically Sealed (Wet Tantalum)" of the substitutes?

A: Both the original and substitute parts are hermetically sealed tantalum capacitors. The substitute parts are specifically identified as wet tantalum technology, which is a standard construction method for hermetically sealed tantalum capacitors. This designation indicates the electrolyte is in liquid form within the sealed case. Both technologies provide equivalent hermetic sealing and reliability characteristics.