TAS686K010P1F Equivalent & Substitute Parts

Part Overview

The TAS686K010P1F is a 68 µF hermetically sealed tantalum capacitor rated at 10 V with axial through-hole mounting, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, repairs, and production continuity. The part operates across a temperature range of -55°C to 125°C and features ±10% capacitance tolerance suitable for general-purpose applications.

Key Parameters

Parameter	Value
Capacitance	68 µF
Voltage Rating	10 V
Tolerance	±10%
Type	Hermetically Sealed Tantalum
Mounting Type	Through Hole
Package / Case	Axial
Operating Temperature Range	-55°C ~ 125°C
Size / Dimension	0.289" Dia x 0.686" L (7.34mm x 17.42mm)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the TAS686K010P1F is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 68 µF (exact match required)
Tolerance: ±10% (exact match required)
Type: Hermetically Sealed Tantalum (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Axial (exact match required)

Allowable Upgrade Parameters:

Voltage Rating: Substitute parts may have equal or higher voltage ratings than the original 10 V specification
Operating Temperature Range: Substitute parts may support equal or extended temperature ranges
ESR (Equivalent Series Resistance): Lower ESR values represent performance improvements
Product Status: Active status substitutes are preferred over obsolete originals

All substitute parts listed maintain the core electrical and mechanical specifications while offering enhanced voltage ratings, improved ESR characteristics, or extended temperature performance. Vishay Sprague 135D and 109D series tantalum capacitors, along with the SuperTan® ST series, provide direct functional equivalence with these allowable parameter upgrades.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	ESR (Ohm)	Operating Temp Range	Size / Dimension	Product Status
TAS686K010P1F	Cornell Dubilier Electronics	68 µF	10 V	±10%	—	-55°C ~ 125°C	0.289" Dia x 0.686" L	Obsolete
109D686X9025C2	Vishay Sprague	68 µF	25 V	±10%	4.3	-55°C ~ 125°C	0.219" Dia x 0.608" L	Active
135D686X9025C2	Vishay Sprague	68 µF	25 V	±10%	4.3	-55°C ~ 125°C	0.203" Dia x 0.453" L	Active
135D686X9025C6	Vishay Sprague	68 µF	25 V	±10%	4.3	-55°C ~ 200°C	0.203" Dia x 0.453" L	Active
135D686X9030F2	Vishay Sprague	68 µF	30 V	±10%	2.9	-55°C ~ 125°C	0.296" Dia x 0.641" L	Active
135D686X9030F6	Vishay Sprague	68 µF	30 V	±10%	2.9	-55°C ~ 200°C	0.296" Dia x 0.641" L	Active
135D686X9035F2	Vishay Sprague	68 µF	35 V	±10%	2.9	-55°C ~ 125°C	0.296" Dia x 0.641" L	Active
135D686X9035F6	Vishay Sprague	68 µF	35 V	±10%	2.9	-55°C ~ 200°C	0.296" Dia x 0.641" L	Active
135D686X9075F2	Vishay Sprague	68 µF	75 V	±10%	3.0	-55°C ~ 125°C	0.296" Dia x 0.641" L	Active
135D686X9075F6	Vishay Sprague	68 µF	75 V	±10%	3.0	-55°C ~ 200°C	0.296" Dia x 0.641" L	Active
ST68-100T2KI	Vishay Sprague	68 µF	100 V	±10%	2.1	-55°C ~ 125°C	0.312" Dia x 0.641" L	Active

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts are manufactured by Vishay Sprague and carry active product status, ensuring long-term availability and supply chain continuity. The original TAS686K010P1F is obsolete and no longer manufactured.

Voltage Rating Selection:

Substitute parts are available in voltage ratings of 25 V, 30 V, 35 V, 75 V, and 100 V. Selection of a higher voltage rating than the original 10 V specification provides design margin and improved reliability in applications where voltage transients or margin requirements exist. All substitute parts maintain the 68 µF capacitance and ±10% tolerance required for functional equivalence.

Temperature Range Considerations:

Substitute parts designated with suffix "2" support the standard operating range of -55°C to 125°C, matching the original part's temperature specification. Substitute parts designated with suffix "6" extend the upper operating temperature to 200°C, providing enhanced thermal performance for applications requiring elevated temperature operation.

ESR Performance:

Substitute parts exhibit lower ESR values compared to the original part specification. The 135D series at 25 V (109D686X9025C2, 135D686X9025C2, 135D686X9025C6) provides 4.3 Ohm ESR. The 135D series at 30 V and 35 V ratings provides 2.9 Ohm ESR. The 135D series at 75 V provides 3.0 Ohm ESR. The SuperTan® ST68-100T2KI provides the lowest ESR at 2.1 Ohm. Lower ESR reduces heat generation and improves transient response characteristics.

Compliance Status:

All substitute parts maintain RoHS non-compliant status consistent with the original part. REACH status is unaffected for all alternatives.

Frequently Asked Questions (FAQ)

Q: Can the TAS686K010P1F be directly replaced with a higher voltage-rated substitute?

A: Yes. All substitute parts maintain the 68 µF capacitance and ±10% tolerance specifications. Higher voltage ratings provide design margin without affecting circuit functionality. The circuit will operate correctly with a substitute part rated at 25 V, 30 V, 35 V, 75 V, or 100 V in place of the original 10 V part.

Q: What is the difference between substitute parts with "F2" and "F6" designations?

A: The primary difference is the maximum operating temperature. Parts with "F2" designation support -55°C to 125°C operation, matching the original part's temperature range. Parts with "F6" designation extend the upper temperature limit to 200°C, providing enhanced thermal performance for high-temperature applications. Both maintain identical capacitance, voltage rating, and tolerance specifications.

Q: Are there physical size differences between substitute parts?

A: Yes. The 135D series at 25 V (109D686X9025C2, 135D686X9025C2, 135D686X9025C6) features a smaller diameter of 0.203" to 0.219" compared to the original 0.289" diameter. The 135D series at 30 V, 35 V, and 75 V ratings maintains a diameter of 0.296", closely matching the original 0.289" specification. The SuperTan® ST68-100T2KI has a diameter of 0.312". Physical dimensions must be verified against available board space before selection.

Q: Which substitute part offers the best ESR performance?

A: The SuperTan® ST68-100T2KI provides the lowest ESR at 2.1 Ohm, followed by the 135D series at 30 V and 35 V ratings with 2.9 Ohm ESR. Lower ESR reduces heat dissipation and improves high-frequency performance. Selection should be based on circuit requirements and available board space.

Q: Are all substitute parts available in active production status?

A: Yes. All listed substitute parts carry active product status from Vishay Sprague, ensuring availability and supply chain continuity. The original TAS686K010P1F is obsolete and no longer manufactured.

Q: Can substitute parts be used in existing designs without circuit modification?

A: Substitute parts with equal or higher voltage ratings can be used as direct replacements without circuit modification. The 68 µF capacitance and ±10% tolerance ensure functional equivalence. Physical dimensions should be verified for board layout compatibility. No circuit redesign is required when substituting with parts of equal or higher voltage ratings.

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