TAC475K035P05 Equivalent & Substitute Parts

Part Overview

The TAC475K035P05 is a 4.7 µF molded tantalum capacitor rated at 35 V with ±10% tolerance, manufactured by Cornell Dubilier Electronics (CDE) in axial through-hole configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. Active alternatives from Vishay Sprague and KEMET provide functional equivalence while maintaining electrical and mechanical compatibility with the original specification.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	4.7 µF	Critical - must match exactly
Voltage Rating	35 V	Critical - must match or exceed
Tolerance	±10%	Critical - determines circuit performance
Type	Molded Tantalum	Critical - defines technology class
Package / Case	Axial	Critical - determines PCB fit
Size / Dimension	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	Critical - physical compatibility
Mounting Type	Through Hole	Critical - assembly method
Operating Temperature	-55°C ~ 125°C	Important - thermal performance range
Features	General Purpose	Important - application category

Substitute Part Grouping Explanation

Substitution logic is based on strict electrical and mechanical parameter matching. All substitute parts maintain identical capacitance (4.7 µF), voltage rating (35 V), physical dimensions (0.180" Dia x 0.345" L), mounting type (through-hole axial), and operating temperature range (-55°C ~ 125°C). Substitutes are grouped into three categories:

Direct Substitutes (Equivalent Tolerance ±10%): Parts with matching tolerance specifications that provide direct functional replacement without circuit redesign.

Upgrade Substitute (Tighter Tolerance ±5%): Part with improved tolerance specification, suitable for applications requiring higher capacitance accuracy while maintaining all other electrical and mechanical parameters.

Similar Substitutes (Alternative Packaging/Compliance): Parts with identical electrical specifications but different packaging formats or regulatory compliance status, selected based on availability and supply chain requirements.

The key parameters determining substitution eligibility are: capacitance value, voltage rating, tolerance class, physical dimensions, and mounting configuration. ESR (Equivalent Series Resistance) is specified only for KEMET T322 series parts (3 Ohm) and does not restrict substitution for general-purpose applications where ESR is not explicitly required.

Parameter Comparison

Parameter	TAC475K035P05 (Main)	173D475X9035W	173D475X9035WW	T322C475K035AS	173D475X5035WW	173D475X9035WE3	T322C475K035AT
Manufacturer	Cornell Dubilier Electronics	Vishay Sprague	Vishay Sprague	KEMET	Vishay Sprague	Vishay Sprague	KEMET
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Tolerance	±10%	±10%	±10%	±10%	±5%	±10%	±10%
Voltage Rating	35 V	35 V	35 V	35 V	35 V	35 V	35 V
Type	Molded	Molded	Molded	Molded	Molded	Molded	Molded
Package / Case	Axial	Axial	Axial	Axial	Axial	Axial	Axial
Size / Dimension	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)	0.180" Dia x 0.345" L (4.57mm x 8.76mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Features	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	Non-compliant	Non-compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Equivalent Tolerance):

Select 173D475X9035W, 173D475X9035WW, T322C475K035AS, or T322C475K035AT when functional equivalence with ±10% tolerance is acceptable. These parts maintain identical electrical specifications and physical dimensions. Vishay Sprague 173D series parts are available in both cut tape and tape & reel packaging formats. KEMET T322C475K035AS and T322C475K035AT provide 3 Ohm ESR specification for applications where series resistance is a design parameter.

For Improved Tolerance Performance:

Select 173D475X5035WW when circuit design requires tighter capacitance tolerance (±5%). This upgrade substitute maintains all other electrical and mechanical parameters while providing enhanced accuracy. Available in tape & reel packaging.

For Regulatory Compliance:

Select 173D475X9035WE3 or T322C475K035AT when ROHS3 compliance is required. Both parts maintain identical electrical specifications and physical dimensions while meeting current regulatory standards. The 173D475X9035WE3 is available in tape & reel format; T322C475K035AT is supplied in bulk packaging.

Inventory Availability:

All substitute parts are in active production with confirmed stock levels: 173D475X9035W (1,727 pcs), 173D475X9035WW (1,105 pcs), T322C475K035AS (940 pcs), 173D475X5035WW (1,144 pcs), 173D475X9035WE3 (711 pcs), and T322C475K035AT (918 pcs).

Frequently Asked Questions (FAQ)

Q: Can 173D475X5035WW be used as a direct replacement for TAC475K035P05?

A: Yes. The 173D475X5035WW is a direct substitute with superior tolerance specification (±5% versus ±10%). All electrical parameters (4.7 µF, 35 V), physical dimensions (0.180" Dia x 0.345" L), and mounting configuration are identical. The tighter tolerance provides improved capacitance accuracy without requiring circuit redesign.

Q: What is the difference between Vishay Sprague 173D475X9035W and 173D475X9035WW?

A: Both parts are electrically and mechanically identical. The primary difference is packaging format: 173D475X9035W is supplied in cut tape (CT), while 173D475X9035WW is supplied in tape & reel (TR). Selection depends on assembly process requirements and volume handling.

Q: Are KEMET T322C475K035AS and T322C475K035AT interchangeable?

A: Yes. Both parts are electrically and mechanically identical with 4.7 µF capacitance, 35 V rating, ±10% tolerance, and 3 Ohm ESR. The primary difference is regulatory compliance: T322C475K035AS is RoHS non-compliant, while T322C475K035AT is ROHS3 compliant. Selection depends on regulatory requirements for the end application.

Q: Does the 3 Ohm ESR specification of KEMET T322 series affect substitution compatibility?

A: ESR is specified only for KEMET T322 series parts and does not restrict substitution for general-purpose applications. For circuits where ESR is not an explicit design requirement, KEMET and Vishay Sprague parts are functionally equivalent. If ESR is a critical parameter, KEMET T322 series parts provide defined 3 Ohm specification.

Q: Can TAC475K035P05 be replaced with parts rated at higher voltage?

A: The substitute parts listed are all rated at 35 V, matching the original specification. Higher voltage ratings are not included in this substitution matrix, as they would represent design changes rather than direct equivalents.

Q: What is the significance of the RoHS compliance difference between substitute parts?

A: RoHS compliance status reflects regulatory requirements for specific markets and applications. 173D475X9035WE3 and T322C475K035AT are ROHS3 compliant, suitable for applications requiring current environmental standards. Non-compliant alternatives (173D475X9035W, 173D475X9035WW, T322C475K035AS) are suitable for legacy systems and applications without RoHS requirements.

Q: Are all substitute parts suitable for the full -55°C ~ 125°C operating temperature range?

A: Yes. All substitute parts maintain the identical operating temperature range of -55°C ~ 125°C, ensuring thermal performance equivalence across the specified environmental conditions.

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