TAS475K050P1C Equivalent & Substitute Parts Reference

Part Overview

The TAS475K050P1C is a 4.7 µF hermetically sealed tantalum capacitor rated at 50 V, manufactured by Cornell Dubilier Electronics (CDE) in axial through-hole configuration. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing system support and new designs. The part operates across a temperature range of -55°C to 125°C and is RoHS non-compliant with MSL rating of 1 (Unlimited).

Substiute Parts

TAS475K050P1C

Cornell Dubilier Electronics (CDE)In Stock: 1130TAS475K050P1C Datasheet

Current PartRFQ

M39003/01-7214

KEMETIn Stock: 1178M39003/01-7214 Datasheet

DirectRFQ

135D475X9100C2

Vishay SpragueIn Stock: 901135D475X9100C2 Datasheet

UpgradeRFQ

135D475X9100C6

Vishay SpragueIn Stock: 779135D475X9100C6 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TAS475K050P1C is determined by the following critical parameters:

Primary Compatibility Criteria:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Mounting type: Through Hole (exact match required)
• Package style: Axial (exact match required)
• Operating temperature range: Minimum -55°C to 125°C

Voltage Rating Consideration: Substitute parts may operate at equal or higher voltage ratings than the original 50 V specification. Higher voltage ratings provide additional design margin and are electrically compatible in applications requiring 50 V operation.

Identified Substitute Categories:

1. Direct Equivalent (Same Voltage Rating): M39003/01-7214 maintains the 50 V rating with identical capacitance and tolerance specifications.

2. Upgraded Voltage Rating: 135D475X9100C2 and 135D475X9100C6 provide 100 V rating with the same 4.7 µF capacitance and ±10% tolerance, offering enhanced voltage margin.

Parameter Comparison

Engineering Selection Recommendations

M39003/01-7214 Selection Criteria: This KEMET part provides direct electrical equivalence with identical 50 V voltage rating and operating temperature range. The part is classified as Active with military-grade specifications (MIL-PRF-39003/1). Selection is appropriate for applications requiring exact voltage matching and high-reliability performance. The lower ESR value of 2.5 Ohm compared to upgrade options provides superior transient response characteristics. Physical dimensions differ slightly (0.610" length vs. 0.474"), requiring PCB layout verification.

135D475X9100C2 and 135D475X9100C6 Selection Criteria: Both Vishay Sprague parts provide 100 V voltage rating, delivering enhanced design margin for 50 V applications. These parts are Active products with identical capacitance and tolerance specifications. The 135D475X9100C6 extends the operating temperature range to 200°C, providing additional thermal headroom. Physical dimensions are comparable to the original part (0.453" length). Higher ESR values (8.5 Ohm) are acceptable for general-purpose applications but may impact high-frequency performance compared to the direct equivalent.

Compliance Considerations: All substitute parts maintain RoHS non-compliant status consistent with the original component. REACH status varies: M39003/01-7214 is REACH Affected, while Vishay parts are REACH Unaffected. Selection should account for supply chain compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can M39003/01-7214 be used as a direct replacement for TAS475K050P1C?

A: Yes. M39003/01-7214 provides electrical equivalence with matching 4.7 µF capacitance, ±10% tolerance, 50 V rating, and -55°C to 125°C operating range. Physical dimensions differ slightly in length (0.610" vs. 0.474"), requiring verification that PCB layout accommodates the longer axial package.

Q: What is the advantage of using 135D475X9100C2 or 135D475X9100C6 over the direct equivalent?

A: The 100 V voltage rating provides additional design margin in applications operating at 50 V. The 135D475X9100C6 variant extends the maximum operating temperature to 200°C, suitable for high-temperature environments. Both parts are Active products with established supply availability.

Q: Are there physical compatibility concerns when substituting these parts?

A: Yes. The M39003/01-7214 is longer (0.610" vs. 0.474"), while the Vishay parts have slightly larger diameter (0.203" vs. 0.185"). PCB layout and mechanical clearance must be verified before implementation. All parts maintain axial through-hole mounting compatibility.

Q: How does ESR affect part selection?

A: ESR (Equivalent Series Resistance) impacts transient response and ripple current handling. M39003/01-7214 provides the lowest ESR at 2.5 Ohm, beneficial for high-frequency filtering applications. Vishay parts at 8.5 Ohm are suitable for general-purpose applications. Original TAS475K050P1C ESR is not specified.

Q: Are all substitute parts RoHS compliant?

A: No. All parts, including substitutes, are RoHS non-compliant. This is consistent with the original component specification and typical for hermetically sealed tantalum capacitors of this generation.

Q: Which substitute part should be selected for new designs?

A: For new designs, select based on application requirements: M39003/01-7214 for high-reliability military applications with exact voltage matching; 135D475X9100C2 for standard applications requiring voltage margin; 135D475X9100C6 for high-temperature environments exceeding 125°C operation.