T495X475K050ASE300 Equivalent & Substitute Parts

Part Overview

The T495X475K050ASE300 is a 4.7 µF molded tantalum capacitor manufactured by KEMET, rated for 50 V operation in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity. Substitute parts maintain the core electrical specifications while offering improved availability and compliance status through alternative manufacturers including KYOCERA AVX and Vishay Sprague.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	4.7 µF	Critical - must match exactly
Voltage Rating	50 V	Critical - must match or exceed
Tolerance	±10%	Critical - must match
Package / Case	2917 (7343 Metric)	Critical - PCB footprint compatibility
Mounting Type	Surface Mount	Critical - assembly process compatibility
ESR (Equivalent Series Resistance)	300 mOhm (main part)	Important - affects circuit performance; substitutes vary
Operating Temperature Range	-55°C ~ 125°C	Critical - thermal environment compatibility
Type	Molded Tantalum	Critical - component technology
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Important - handling and storage requirements

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on electrical and mechanical compatibility with the T495X475K050ASE300:

Category 1: Direct Electrical Equivalents (300 mOhm ESR) Parts maintaining identical ESR specification: TPSD475K050H0300 (KYOCERA AVX) and TR3D475K050C0300 (Vishay Sprague). These parts provide direct functional replacement with matching ESR performance.

Category 2: Functional Equivalents (Reduced ESR) Parts with lower ESR values: TAJD475K050H (1.4 Ohm), TAJD475K050HNJ (1.4 Ohm), TPSD475K050H0500 (500 mOhm), and TPSD475K050H0700 (700 mOhm). These maintain all critical electrical parameters (capacitance, voltage, tolerance, temperature range) but differ in ESR specification.

Substitution Criteria (All Parts):

Capacitance: 4.7 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±10% (exact match required)
Package: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature: -55°C ~ 125°C (exact match required)
Type: Molded Tantalum (exact match required)
MSL: 1 (Unlimited) (exact match required)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	ESR	Package	Height (Max)	Product Status	RoHS Status	REACH Status
T495X475K050ASE300	KEMET	T495	4.7 µF	50 V	±10%	300 mOhm	2917	0.169" (4.30 mm)	Obsolete	Non-compliant	Unaffected
TPSD475K050H0300	KYOCERA AVX	TPS	4.7 µF	50 V	±10%	300 mOhm	2917	0.122" (3.10 mm)	Active	Non-compliant	Unaffected
TAJD475K050H	KYOCERA AVX	TAJ	4.7 µF	50 V	±10%	1.4 Ohm	2917	0.122" (3.10 mm)	Active	Non-compliant	Unaffected
TAJD475K050HNJ	KYOCERA AVX	TAJ	4.7 µF	50 V	±10%	1.4 Ohm	2917	0.122" (3.10 mm)	Active	Non-compliant	Affected
TPSD475K050H0500	KYOCERA AVX	TPS	4.7 µF	50 V	±10%	500 mOhm	2917	0.122" (3.10 mm)	Active	Non-compliant	Unaffected
TPSD475K050H0700	KYOCERA AVX	TPS	4.7 µF	50 V	±10%	700 mOhm	2917	0.122" (3.10 mm)	Active	Non-compliant	Unaffected
TR3D475K050C0300	Vishay Sprague	TR3	4.7 µF	50 V	±10%	300 mOhm	2917	0.122" (3.10 mm)	Active	ROHS3 Compliant	Unaffected
TR3E475K050C0300	Vishay Sprague	TR3	4.7 µF	50 V	±10%	300 mOhm	2917	0.170" (4.32 mm)	Active	ROHS3 Compliant	Unaffected

Engineering Selection Recommendations

For Direct Replacement (Identical ESR Performance):

TPSD475K050H0300 (KYOCERA AVX) provides the closest functional equivalent with matching 300 mOhm ESR specification. This part is active, maintains all critical electrical parameters, and offers improved height profile (3.10 mm vs. 4.30 mm), enabling potential PCB layout optimization. Inventory availability is substantial at 1606 units.

TR3D475K050C0300 (Vishay Sprague) offers an alternative direct equivalent with identical ESR and the additional advantage of ROHS3 compliance, addressing regulatory requirements for new designs. This part is active with 1682 units in stock.

For Applications Tolerant of ESR Variation:

TAJD475K050HNJ (KYOCERA AVX) provides the lowest ESR option at 1.4 Ohm with exceptional inventory availability (1,000,300 units). This part is suitable for applications where reduced ESR improves performance characteristics. Note: REACH Status is Affected, requiring compliance verification for regulated markets.

TPSD475K050H0500 and TPSD475K050H0700 (KYOCERA AVX) offer intermediate ESR values (500 mOhm and 700 mOhm respectively) for applications requiring ESR specifications between the main part and the TAJ series.

Compliance Considerations:

All substitute parts maintain the same MSL rating (1 - Unlimited) and operating temperature range (-55°C ~ 125°C) as the original part. TR3D475K050C0300 and TR3E475K050C0300 provide ROHS3 compliance for designs requiring environmental regulation adherence. TAJD475K050HNJ carries REACH Affected status and requires regulatory assessment for specific applications.

Frequently Asked Questions (FAQ)

Q: Can TPSD475K050H0300 be used as a direct replacement for T495X475K050ASE300?

A: Yes. TPSD475K050H0300 maintains identical electrical specifications (4.7 µF, 50 V, ±10%, 300 mOhm ESR) and package dimensions (2917 / 7343 Metric). The reduced height (3.10 mm vs. 4.30 mm) is mechanically compatible with standard 2917 footprints. Both parts share identical operating temperature range (-55°C ~ 125°C) and MSL rating (1 - Unlimited).

Q: What is the difference between TAJD475K050H and TAJD475K050HNJ?

A: Both parts are electrically identical (4.7 µF, 50 V, ±10%, 1.4 Ohm ESR) and mechanically compatible. The primary difference is REACH Status: TAJD475K050H is REACH Unaffected, while TAJD475K050HNJ is REACH Affected. Selection depends on regulatory requirements for the target market. TAJD475K050HNJ offers significantly higher inventory availability (1,000,300 units vs. 766 units).

Q: Why do substitute parts have different ESR values?

A: ESR variation reflects different manufacturing processes and internal construction within the molded tantalum capacitor category. All listed substitutes maintain the core electrical specifications (capacitance, voltage, tolerance) required for functional compatibility. ESR differences affect circuit performance characteristics such as ripple current handling and transient response. Selection should be based on circuit requirements for these parameters.

Q: Are all substitute parts compatible with the original PCB footprint?

A: Yes. All substitute parts use the 2917 (7343 Metric) package with identical length (0.287" / 7.30 mm) and width (0.169" / 4.30 mm) dimensions. Height variations (ranging from 0.122" to 0.170") are within standard PCB assembly tolerances for surface mount components and do not affect footprint compatibility.

Q: Which substitute part offers the best compliance profile?

A: TR3D475K050C0300 and TR3E475K050C0300 (Vishay Sprague) both provide ROHS3 compliance, addressing environmental regulations for new designs. All other substitutes maintain RoHS non-compliant status matching the original part. For REACH-regulated applications, TR3D475K050C0300, TR3E475K050C0300, and TPSD475K050H0300 are REACH Unaffected, while TAJD475K050HNJ is REACH Affected.

Q: What is the inventory status for each substitute part?

A: TAJD475K050HNJ offers the highest availability at 1,000,300 units. TPSD475K050H0300 provides 1606 units. TR3E475K050C0300 offers 1916 units. TR3D475K050C0300 provides 1682 units. TPSD475K050H0500 and TPSD475K050H0700 each offer 853 and 766 units respectively. TAJD475K050H provides 766 units.

Q: Can lower ESR substitutes improve circuit performance?

A: Lower ESR values reduce impedance and improve transient response characteristics. TAJD475K050H and TAJD475K050HNJ (1.4 Ohm ESR) provide significantly lower impedance compared to the original 300 mOhm specification. Selection should be based on circuit design requirements. All substitutes maintain identical capacitance, voltage rating, tolerance, and temperature range, ensuring functional compatibility regardless of ESR selection.

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