TAC105K035P02 Equivalent & Substitute Parts Reference

Part Overview

The TAC105K035P02 is a 1 µF molded tantalum axial capacitor rated at 35 V with ±10% tolerance, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making direct replacement necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 125°C and is designed for general-purpose through-hole mounting in axial configuration with dimensions of 0.110" diameter by 0.290" length (2.79mm x 7.37mm).

Due to its obsolete status, equivalent and substitute parts from active manufacturers are required to maintain design continuity and ensure component availability for new builds and field repairs.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	1 µF	Critical - must match exactly
Voltage Rating	35 V	Critical - minimum requirement; higher ratings acceptable
Tolerance	±10%	Critical - tighter tolerances acceptable
Type	Molded Tantalum	Critical - technology type must match
Package/Case	Axial	Critical - form factor must match
Mounting Type	Through Hole	Critical - PCB assembly compatibility
Size/Dimension	0.110" Dia x 0.290" L (2.79mm x 7.37mm)	Critical - physical fit on PCB
Operating Temperature	-55°C ~ 125°C	Critical - thermal performance requirement
RoHS Status	Non-compliant	Regulatory consideration for new designs

Substitute Part Grouping Explanation

Substitute parts for the TAC105K035P02 are categorized based on electrical and mechanical compatibility within the following framework:

Direct Equivalents (Same Electrical & Mechanical Specifications): Parts that maintain identical capacitance (1 µF), voltage rating (35 V), tolerance (±10%), physical dimensions (0.110" Dia x 0.290" L), and operating temperature range (-55°C to 125°C). These parts differ only in packaging format (Cut Tape, Tape & Reel, or Bulk) and manufacturer designation.

Tolerance Upgrades: Parts with tighter tolerance specifications (±5% instead of ±10%) while maintaining all other electrical and mechanical parameters. These provide improved capacitance accuracy for applications requiring stricter component tolerances.

Voltage Upgrades: Parts rated at 50 V instead of 35 V, maintaining 1 µF capacitance and ±10% tolerance. Higher voltage ratings provide additional safety margin in applications subject to voltage transients or design margin requirements.

Combined Upgrades: Parts combining both tighter tolerance (±5%) and higher voltage rating (50 V) for applications requiring enhanced performance specifications.

Compliance Variants: Parts with identical electrical and mechanical specifications but different RoHS compliance status (ROHS3 Compliant variants available for 173D series).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR	Packaging	Product Status	RoHS Status
TAC105K035P02	Cornell Dubilier Electronics	1 µF	35 V	±10%	-	-	Obsolete	Non-compliant
173D105X9035V	Vishay Sprague	1 µF	35 V	±10%	-	Cut Tape (CT)	Active	Non-compliant
173D105X9035VW	Vishay Sprague	1 µF	35 V	±10%	-	Tape & Reel (TR)	Active	Non-compliant
T322B105K035AS	KEMET	1 µF	35 V	±10%	8 Ohm	Bulk	Active	Non-compliant
173D105X5035V	Vishay Sprague	1 µF	35 V	±5%	-	Tape & Box (TB)	Active	Non-compliant
173D105X5050VW	Vishay Sprague	1 µF	50 V	±5%	-	Tape & Reel (TR)	Active	Non-compliant
173D105X9050VW	Vishay Sprague	1 µF	50 V	±10%	-	Tape & Reel (TR)	Active	Non-compliant
T322B105K050AS	KEMET	1 µF	50 V	±10%	8 Ohm	Bulk	Active	Non-compliant
173D105X9035VE3	Vishay Sprague	1 µF	35 V	±10%	-	Cut Tape (CT)	Active	ROHS3 Compliant
T322B105K035AT	KEMET	1 µF	35 V	±10%	8 Ohm	Bulk	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select from 173D105X9035V, 173D105X9035VW, or T322B105K035AS. All three parts maintain the exact electrical specifications (1 µF, 35 V, ±10%) and physical dimensions of the original TAC105K035P02. Selection between these options depends on packaging requirements: Cut Tape for automated pick-and-place assembly, Tape & Reel for high-volume production, or Bulk for manual assembly operations.

For RoHS3 Compliance:

Use 173D105X9035VE3 or T322B105K035AT. These parts provide identical electrical and mechanical specifications to the original component while meeting ROHS3 compliance requirements for new product designs or applications subject to RoHS regulations.

For Enhanced Tolerance Specification:

Select 173D105X5035V when circuit design requires tighter capacitance tolerance (±5% instead of ±10%). This part maintains the 35 V rating and identical physical form factor while providing improved capacitance accuracy.

For Increased Voltage Margin:

Use 173D105X9050VW or T322B105K050AS when applications require higher voltage rating (50 V) for additional safety margin. These parts maintain 1 µF capacitance and ±10% tolerance while providing 43% higher voltage rating than the original specification.

For Combined Tolerance and Voltage Enhancement:

Select 173D105X5050VW for applications requiring both tighter tolerance (±5%) and higher voltage rating (50 V). This part provides the most conservative electrical specifications among all available substitutes.

All recommended substitutes are manufactured by active suppliers (Vishay Sprague or KEMET) with confirmed inventory availability and active product status, ensuring long-term component availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated capacitor in place of the 35 V original specification?

A: Yes. The 50 V rated parts (173D105X9050VW, T322B105K050AS, 173D105X5050VW) are direct functional substitutes. Higher voltage ratings provide additional safety margin and are electrically compatible with 35 V circuit designs. Physical dimensions remain identical, ensuring PCB fit compatibility.

Q: What is the difference between ±10% and ±5% tolerance parts?

A: Tolerance specification defines the allowable deviation from the nominal 1 µF capacitance value. ±10% tolerance allows capacitance between 0.9 µF and 1.1 µF, while ±5% tolerance restricts the range to 0.95 µF to 1.05 µF. Select ±5% tolerance parts only when circuit design requires tighter capacitance accuracy. For general-purpose applications, ±10% tolerance parts are functionally equivalent.

Q: What packaging formats are available, and how do they affect assembly?

A: Three packaging formats are available: Cut Tape (CT) for automated pick-and-place equipment, Tape & Reel (TR) for high-volume production lines, and Bulk for manual assembly or low-volume applications. All formats contain identical components; packaging selection depends on assembly process requirements, not electrical performance.

Q: Are the Vishay Sprague 173D series and KEMET T322 series electrically interchangeable?

A: Yes, for the specified electrical parameters (1 µF, 35 V or 50 V, ±10% or ±5% tolerance). Both manufacturers produce molded tantalum axial capacitors with identical dimensions and operating temperature ranges. The KEMET T322 series specifies 8 Ohm ESR, while Vishay 173D series does not specify ESR in the provided data. Both are suitable for general-purpose applications.

Q: What is the significance of the "E3" designation in part numbers like 173D105X9035VE3?

A: The "E3" suffix indicates ROHS3 compliance. These parts meet RoHS Directive 2011/65/EU requirements and are suitable for new product designs subject to RoHS regulations. Non-E3 variants (173D105X9035V, 173D105X9035VW) are functionally identical but do not carry RoHS3 compliance certification.

Q: Can I substitute the obsolete TAC105K035P02 with any of the recommended parts without circuit redesign?

A: Yes. All recommended direct equivalent parts (173D105X9035V, 173D105X9035VW, T322B105K035AS, 173D105X9035VE3, T322B105K035AT) maintain identical capacitance, voltage rating, tolerance, physical dimensions, and operating temperature range. No circuit redesign is required for these substitutions. Voltage upgrade parts (50 V rated) are also compatible without redesign but provide additional safety margin.

Q: What inventory levels are available for each substitute part?

A: Current inventory includes: 173D105X9035V (1018 pcs), 173D105X9035VW (1127 pcs), T322B105K035AS (1148 pcs), 173D105X5035V (893 pcs), 173D105X5050VW (777 pcs), 173D105X9050VW (974 pcs), T322B105K050AS (1027 pcs), 173D105X9035VE3 (1742 pcs), and T322B105K035AT (4174 pcs). All parts are confirmed as new original stock.

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