TAP105M025SCS Equivalent & Substitute Parts

Part Overview

The TAP105M025SCS is a 1 µF conformal coated tantalum capacitor rated at 25 V with ±20% tolerance, manufactured by KYOCERA AVX in the TAP series. This through-hole radial component operates across -55°C to 125°C with an ESR of 10Ohm and is ROHS3 compliant. Alternative parts become necessary when higher voltage ratings, improved tolerance specifications, or different ESR characteristics are required for circuit optimization or inventory availability.

Key Parameters

Parameter	Value
Capacitance	1 µF
Voltage Rating	25 V
Tolerance	±20%
Type	Conformal Coated
ESR	10Ohm
Mounting Type	Through Hole Radial
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by three core parameters: capacitance value (1 µF fixed), conformal coating type (required for environmental protection), and through-hole radial mounting configuration. Voltage rating and tolerance are the primary variables that define substitution categories.

Voltage-Rated Upgrades (50 V): TAP105K050DCS and TAP105K050SCS maintain identical capacitance and mounting while increasing voltage rating to 50 V. These parts feature improved tolerance (±10%) and reduced ESR (8Ohm), making them suitable for circuits requiring higher voltage margins or lower impedance performance.

Voltage-Rated Upgrade (35 V): TAP105M035SCS provides an intermediate voltage step to 35 V while maintaining the original ±20% tolerance and radial package footprint. ESR improves to 8Ohm.

Cross-Manufacturer Equivalent (25 V): 199D105X0025A1V1E3 from Vishay Sprague matches the original voltage and tolerance specifications, offering direct functional equivalence with minor dimensional variations within the radial package class.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR	Size Code	Diameter	Height	Lead Spacing
TAP105M025SCS	KYOCERA AVX	1 µF	25 V	±20%	10Ohm	A	0.177" (4.50mm)	0.276" (7.00mm)	0.098" (2.50mm)
TAP105K050DCS	KYOCERA AVX	1 µF	50 V	±10%	8Ohm	C	0.197" (5.00mm)	0.335" (8.50mm)	0.098" (2.50mm)
TAP105K050SCS	KYOCERA AVX	1 µF	50 V	±10%	8Ohm	C	0.197" (5.00mm)	0.335" (8.50mm)	0.098" (2.50mm)
TAP105M035SCS	KYOCERA AVX	1 µF	35 V	±20%	8Ohm	A	0.177" (4.50mm)	0.276" (7.00mm)	0.098" (2.50mm)
199D105X0025A1V1E3	Vishay Sprague	1 µF	25 V	±20%	—	A	0.173" (4.40mm)	0.280" (7.11mm)	0.100" (2.54mm)

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Same Tolerance): The 199D105X0025A1V1E3 from Vishay Sprague TANTALEX™ 199D series provides functional equivalence with identical electrical specifications. Dimensional variations are within radial package tolerance. Both parts are ROHS3 compliant and active products.

For Voltage Margin Enhancement: TAP105M035SCS offers a 40% voltage increase (35 V vs. 25 V) while maintaining the same physical footprint (Size Code A) and tolerance class. ESR improves from 10Ohm to 8Ohm. This selection is appropriate when circuit design permits higher voltage ratings without PCB layout changes.

For Voltage and Tolerance Optimization: TAP105K050DCS and TAP105K050SCS both provide 100% voltage increase (50 V) with tighter tolerance (±10% vs. ±20%) and lower ESR (8Ohm). These require Size Code C package accommodation, resulting in larger physical dimensions. Both are KYOCERA AVX products with identical electrical performance and active status.

All substitute parts maintain conformal coating, through-hole radial mounting, -55°C to 125°C operating range, 1000 Hrs @ 85°C lifetime rating, and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can TAP105K050DCS or TAP105K050SCS be used as direct drop-in replacements?

A: Both parts share identical lead spacing (0.098" / 2.50mm) but require larger PCB footprint accommodation due to Size Code C packaging. Diameter increases from 0.177" to 0.197" and height from 0.276" to 0.335". PCB layout verification is necessary before substitution.

Q: What is the difference between TAP105K050DCS and TAP105K050SCS?

A: Both parts are electrically and mechanically identical with 1 µF capacitance, 50 V rating, ±10% tolerance, and 8Ohm ESR. Inventory availability differs (1707 Pcs vs. 2644 Pcs). Selection should be based on supply chain requirements.

Q: Is the Vishay Sprague 199D105X0025A1V1E3 compatible with existing PCB designs for TAP105M025SCS?

A: Yes. Both maintain Size Code A radial package with matching lead spacing (0.098" / 2.50mm). Minor dimensional variations (diameter 0.173" vs. 0.177", height 0.280" vs. 0.276") fall within standard radial package tolerances and do not affect PCB compatibility.

Q: When should TAP105M035SCS be selected over the original TAP105M025SCS?

A: TAP105M035SCS is appropriate when circuit operating margins require higher voltage headroom (35 V vs. 25 V) without changing physical footprint or tolerance class. ESR improvement (8Ohm vs. 10Ohm) provides additional performance benefit. No PCB layout changes are required.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. TAP105M025SCS, TAP105K050DCS, TAP105K050SCS, TAP105M035SCS, and 199D105X0025A1V1E3 are all ROHS3 compliant with REACH Unaffected status and EAR99 ECCN classification.

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