TAP686M025FCS Equivalent & Substitute Parts

Part Overview

The TAP686M025FCS is a 68 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 is designed for general-purpose applications requiring reliable energy storage in compact form factors. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified when inventory constraints, lead time requirements, or tolerance specifications necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	68 µF
Voltage Rating	25 V
Tolerance	±20%
Type	Conformal Coated
ESR (Equivalent Series Resistance)	800 mOhm
Operating Temperature Range	-55°C to 125°C
Lifetime @ Temperature	1000 Hrs @ 85°C
Mounting Type	Through Hole
Package / Case	Radial
Size / Dimension	0.354" Dia (9.00 mm)
Height - Seated (Max)	0.630" (16.00 mm)
Lead Spacing	0.197" (5.00 mm)
Manufacturer Size Code	N
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the TAP686M025FCS are qualified based on strict electrical and mechanical parameter matching:

Direct Substitutes maintain identical specifications across all critical parameters: capacitance (68 µF), voltage rating (25 V), ESR (800 mOhm), operating temperature range (-55°C to 125°C), lifetime rating (1000 Hrs @ 85°C), mounting type (through hole), package type (radial), physical dimensions (0.354" Dia × 0.630" height, 0.197" lead spacing), and compliance certifications (RoHS3, REACH unaffected).

Upgrade Substitutes provide enhanced performance in tolerance specification while maintaining all other electrical and mechanical parameters. These parts are suitable when tighter capacitance tolerance is required by circuit design specifications.

The following parameters determine substitution eligibility:

Capacitance value: 68 µF (fixed)
Voltage rating: 25 V (fixed)
ESR: 800 mOhm (fixed)
Operating temperature: -55°C to 125°C (fixed)
Mounting and package: Through hole radial (fixed)
Physical dimensions: 0.354" Dia, 0.630" height, 0.197" lead spacing (fixed)

Parameter Comparison

Parameter	TAP686M025FCS (Main)	TAP686M025CCS (Direct)	TAP686K025CCS (Upgrade)
Manufacturer	KYOCERA AVX	KYOCERA AVX	KYOCERA AVX
Series	TAP	TAP	TAP
Capacitance	68 µF	68 µF	68 µF
Tolerance	±20%	±20%	±10%
Voltage Rating	25 V	25 V	25 V
Type	Conformal Coated	Conformal Coated	Conformal Coated
ESR	800 mOhm	800 mOhm	800 mOhm
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Lifetime @ 85°C	1000 Hrs	1000 Hrs	1000 Hrs
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial
Size / Dimension	0.354" Dia (9.00 mm)	0.354" Dia (9.00 mm)	0.354" Dia (9.00 mm)
Height - Seated (Max)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—TAP686M025FCS, TAP686M025CCS, and TAP686K025CCS—are active production components with identical RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across all applications.

TAP686M025FCS and TAP686M025CCS are electrically and mechanically interchangeable. Selection between these direct substitutes is determined by inventory availability and lead time requirements, as both maintain ±20% tolerance specification.

TAP686K025CCS provides tighter capacitance tolerance at ±10%, making it suitable for applications where circuit design specifications require enhanced tolerance performance. This upgrade substitute maintains all other electrical characteristics and physical dimensions, ensuring PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can TAP686M025CCS be used as a direct replacement for TAP686M025FCS?

A: Yes. TAP686M025CCS is a direct substitute with identical electrical specifications (68 µF, 25 V, ±20% tolerance, 800 mOhm ESR), operating temperature range, lifetime rating, and physical dimensions. Both parts are through-hole radial conformal coated tantalum capacitors in the TAP series with RoHS3 compliance.

Q: What is the difference between TAP686M025FCS and TAP686K025CCS?

A: The primary difference is capacitance tolerance. TAP686M025FCS specifies ±20% tolerance, while TAP686K025CCS specifies ±10% tolerance. All other parameters—capacitance value (68 µF), voltage rating (25 V), ESR (800 mOhm), operating temperature range, physical dimensions, and compliance certifications—are identical.

Q: Are these parts pin-compatible?

A: Yes. All three parts share identical lead spacing (0.197" / 5.00 mm), physical dimensions (0.354" diameter, 0.630" maximum height), and radial through-hole mounting configuration. No PCB layout modifications are required for substitution.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. TAP686M025FCS, TAP686M025CCS, and TAP686K025CCS are all ROHS3 compliant and REACH unaffected, ensuring regulatory compatibility across all applications.

Q: When should TAP686K025CCS be selected over the other options?

A: TAP686K025CCS should be selected when circuit design specifications require tighter capacitance tolerance (±10%) for improved performance or reliability. The upgrade substitute maintains all other electrical and mechanical characteristics of the original part.

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