TAP685M025SPA Equivalent & Substitute Parts

Part Overview

The TAP685M025SPA is a 6.8 µF conformal coated tantalum capacitor rated for 25 V operation in a radial through-hole package. Manufactured by KYOCERA AVX under the TAP series, this component is classified as Active product status. Finding equivalent and substitute parts becomes necessary due to inventory constraints, lead time requirements, or design optimization needs while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

TAP685M025SPA

KYOCERA AVXIn Stock: 1088TAP685M025SPA Datasheet

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TAP685K025SCS

KYOCERA AVXIn Stock: 1420TAP685K025SCS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the TAP685M025SPA is determined by strict equivalence across the following critical parameters:

Capacitance value must remain 6.8 µF. Voltage rating must be 25 V or higher. Mounting type must be Through Hole with Radial package configuration. Physical dimensions (diameter, height, lead spacing) must match or be compatible with the original footprint. ESR must remain at 3.1 Ohm. Operating temperature range must span -55°C ~ 125°C. Type classification must be Conformal Coated tantalum capacitor. RoHS3 compliance and REACH unaffected status must be maintained.

The tolerance parameter (±20% for the main part) may be tightened to ±10% in substitute parts, as this represents an upgrade in precision without affecting functional compatibility. All substitute parts listed are from the same manufacturer (KYOCERA AVX) and series (TAP) to ensure consistency in construction and reliability characteristics.

Parameter Comparison

Engineering Selection Recommendations

The TAP685K025SCS qualifies as a direct substitute for the TAP685M025SPA based on electrical and mechanical parameter equivalence. Both components maintain Active product status from KYOCERA AVX and satisfy ROHS3 compliance and REACH unaffected requirements. The primary distinction is tolerance specification: TAP685K025SCS provides ±10% tolerance compared to ±20% for the main part. This tighter tolerance represents an upgrade path for applications requiring improved capacitance accuracy without any compromise to voltage rating, ESR characteristics, thermal performance, or physical footprint compatibility. Selection between these parts should be based on application-specific tolerance requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can TAP685K025SCS replace TAP685M025SPA in existing designs? A: Yes. Both parts share identical electrical ratings (6.8 µF, 25 V, 3.1 Ohm ESR), thermal characteristics (-55°C ~ 125°C), and physical dimensions (0.197" diameter, 0.354" height, 0.098" lead spacing). The substitute part features tighter tolerance (±10% vs ±20%), which is compatible with all applications accepting the original part.

Q: What is the significance of tolerance differences between these parts? A: Tolerance defines the acceptable capacitance deviation from the nominal 6.8 µF value. TAP685M025SPA allows ±20% variation (5.44 µF to 8.16 µF), while TAP685K025SCS allows ±10% variation (6.12 µF to 7.48 µF). Applications with strict capacitance requirements benefit from the tighter tolerance of the substitute part.

Q: Are physical dimensions identical between these parts? A: Yes. Both components use identical radial through-hole packaging with 0.197" diameter, 0.354" maximum seated height, and 0.098" lead spacing. PCB footprints are directly compatible.

Q: Do both parts meet the same compliance standards? A: Yes. Both TAP685M025SPA and TAP685K025SCS are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8532.21.0040.

Q: What is the ESR specification and why does it matter? A: ESR (Equivalent Series Resistance) of 3.1 Ohm is identical for both parts. ESR affects ripple current handling and thermal performance in high-frequency applications. Matching ESR ensures equivalent performance in filtering and energy storage circuits.