TDL475K025S1C-F Equivalent & Substitute Parts

Part Overview

The TDL475K025S1C-F is a 4.7 µF conformal coated tantalum capacitor rated at 25 V with ±10% tolerance, manufactured by Cornell Dubilier Electronics (CDE) in radial through-hole configuration. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing production and maintenance applications. Vishay Sprague TANTALEX™ 199D series capacitors provide direct functional equivalents and upgraded alternatives that maintain electrical compatibility while offering active product status and extended availability.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	4.7 µF	Critical - must match exactly
Voltage Rating	25 V (main), 35 V (upgrades)	Critical - determines circuit compatibility
Tolerance	±10% (main), ±5% (upgrade)	Important - affects circuit performance
Type	Conformal Coated Tantalum	Critical - defines component class
Mounting Type	Through Hole Radial	Critical - determines PCB compatibility
Operating Temperature	-55°C to 125°C	Important - defines environmental range
Lead Spacing	0.100" (2.54 mm)	Critical - determines footprint compatibility
RoHS Status	ROHS3 Compliant	Important - regulatory requirement

Substitute Part Grouping Explanation

Substitution logic is based on the following allowed parameters: capacitance value (4.7 µF), voltage rating, tolerance, conformal coating type, through-hole radial mounting, lead spacing (0.100"), operating temperature range (-55°C to 125°C), and RoHS3 compliance.

Direct Equivalents (Same Voltage Rating - 25 V):

199D475X9025BXB1E3 (Tape & Reel packaging)
199D475X9025BXV1E3 (Bulk packaging)

These parts maintain identical electrical specifications (4.7 µF, ±10%, 25 V) and physical mounting characteristics. Differences are limited to packaging format and physical diameter (5.00 mm vs. 6.60 mm original), which do not affect electrical function or circuit board mounting compatibility given the 0.100" lead spacing consistency.

Upgrade Substitutes (Higher Voltage Rating - 35 V):

199D475X5035C1V1E3 (±5% tolerance, 5.50 mm diameter)
199D475X9035C1V1E3 (±10% tolerance, 5.50 mm diameter)
199D475X9035C2V1E3 (±10% tolerance, 5.50 mm diameter)

These parts provide enhanced voltage margin (35 V vs. 25 V) while maintaining 4.7 µF capacitance and through-hole radial configuration. The 35 V rating allows operation in circuits originally designed for 25 V with increased safety margin. Physical diameter increases to 5.50 mm but lead spacing remains 0.100", preserving PCB footprint compatibility.

Parameter Comparison

Parameter	TDL475K025S1C-F (Main)	199D475X9025BXB1E3	199D475X9025BXV1E3	199D475X5035C1V1E3	199D475X9035C1V1E3	199D475X9035C2V1E3
Manufacturer	Cornell Dubilier Electronics	Vishay Sprague	Vishay Sprague	Vishay Sprague	Vishay Sprague	Vishay Sprague
Series	TDL	TANTALEX™ 199D	TANTALEX™ 199D	TANTALEX™ 199D	TANTALEX™ 199D	TANTALEX™ 199D
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Voltage Rating	25 V	25 V	25 V	35 V	35 V	35 V
Tolerance	±10%	±10%	±10%	±5%	±10%	±10%
Type	Conformal Coated	Conformal Coated	Conformal Coated	Conformal Coated	Conformal Coated	Conformal Coated
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package/Case	Radial	Radial	Radial	Radial	Radial	Radial
Size Diameter	0.260" (6.60 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.217" (5.50 mm)	0.217" (5.50 mm)	0.217" (5.50 mm)
Height (Max)	0.360" (9.14 mm)	0.360" (9.14 mm)	0.360" (9.14 mm)	0.360" (9.14 mm)	0.360" (9.14 mm)	0.360" (9.14 mm)
Lead Spacing	0.100" (2.54 mm)	0.100" (2.54 mm)	0.100" (2.54 mm)	0.100" (2.54 mm)	0.100" (2.54 mm)	0.100" (2.54 mm)
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Lifetime @ Temp.	Not specified	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Not specified	Tape & Reel	Bulk	Bulk	Bulk	Bulk

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

Select 199D475X9025BXB1E3 or 199D475X9025BXV1E3 when the circuit design requires exact electrical equivalence to the TDL475K025S1C-F. Both parts maintain 4.7 µF capacitance, ±10% tolerance, and 25 V voltage rating. Choose 199D475X9025BXB1E3 for tape and reel packaging in high-volume production environments, or 199D475X9025BXV1E3 for bulk packaging in lower-volume applications. Both are active products with ROHS3 compliance and documented 1000-hour lifetime at 85°C, providing superior reliability compared to the obsolete original part.

For Upgraded Performance (Higher Voltage Margin):

Select 199D475X9035C1V1E3 or 199D475X9035C2V1E3 when circuit design permits 35 V rated components. These upgrades provide 40% additional voltage margin over the original 25 V specification while maintaining identical 4.7 µF capacitance and ±10% tolerance. The 35 V rating accommodates transient overvoltage conditions and extends component operational life in demanding environments. Both variants are active products with ROHS3 compliance.

Select 199D475X5035C1V1E3 when tighter tolerance (±5% vs. ±10%) is required alongside the 35 V upgrade. This part combines enhanced voltage rating with improved capacitance accuracy, suitable for precision analog circuits where tolerance stack-up is critical.

All substitute parts maintain through-hole radial mounting with 0.100" lead spacing, ensuring PCB footprint compatibility. Physical diameter variations (5.00 mm to 5.50 mm) do not affect mounting compatibility given consistent lead spacing and height specifications.

Frequently Asked Questions (FAQ)

Q: Can 199D475X9025BXB1E3 or 199D475X9025BXV1E3 be used as direct replacements for TDL475K025S1C-F?

A: Yes. Both parts are direct electrical equivalents with identical 4.7 µF capacitance, ±10% tolerance, 25 V voltage rating, conformal coating, and through-hole radial mounting. The 0.100" lead spacing matches the original footprint. The primary difference is packaging format (tape & reel vs. bulk) and slightly smaller physical diameter (5.00 mm vs. 6.60 mm), which does not affect circuit function or PCB mounting.

Q: What is the advantage of selecting a 35 V rated substitute instead of the 25 V equivalent?

A: The 35 V rated parts (199D475X9035C1V1E3, 199D475X9035C2V1E3, 199D475X5035C1V1E3) provide 40% additional voltage margin. This margin accommodates transient overvoltage conditions, reduces stress on the dielectric, and extends operational lifetime in circuits subject to voltage spikes or ripple. The 35 V rating is electrically compatible with 25 V circuit designs and improves reliability without requiring circuit modification.

Q: Are there physical footprint differences between the main part and substitutes?

A: Physical diameter varies: TDL475K025S1C-F is 6.60 mm, 199D475X9025BXB1E3 and 199D475X9025BXV1E3 are 5.00 mm, and 199D475X9035C1V1E3, 199D475X9035C2V1E3, and 199D475X5035C1V1E3 are 5.50 mm. However, all parts maintain identical 0.100" (2.54 mm) lead spacing and 0.360" (9.14 mm) maximum height. PCB footprints designed for the original part accommodate all substitutes without modification.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All Vishay Sprague TANTALEX™ 199D series substitutes listed are ROHS3 compliant, matching the compliance status of the original TDL475K025S1C-F. All parts are suitable for applications requiring RoHS3 certification.

Q: What is the difference between 199D475X9035C1V1E3 and 199D475X9035C2V1E3?

A: Both parts are 4.7 µF, ±10%, 35 V conformal coated tantalum capacitors with identical electrical specifications and physical dimensions. The designation suffix (C1V1E3 vs. C2V1E3) indicates internal manufacturing or date code variations. From an engineering substitution perspective, both parts are functionally equivalent and interchangeable.

Q: Why is the original TDL475K025S1C-F classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Cornell Dubilier Electronics and is not available through standard distribution channels. The Vishay Sprague TANTALEX™ 199D series provides active, readily available alternatives with equivalent or superior electrical specifications and documented reliability characteristics.

Q: Can 199D475X5035C1V1E3 with ±5% tolerance be used in place of ±10% tolerance parts?

A: Yes. The ±5% tolerance is tighter than the ±10% specification, meaning 199D475X5035C1V1E3 meets all tolerance requirements of circuits designed for ±10% components. This part is suitable for applications where improved capacitance accuracy provides circuit performance benefits, particularly in precision analog or filtering applications.

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