T494D475M035AT Equivalent & Substitute Parts

Part Overview

The T494D475M035AT is a 4.7 µF molded tantalum capacitor manufactured by KEMET, rated for 35 V with ±20% tolerance. This surface mount component in 2917 (7343 Metric) package is designed for general purpose applications requiring stable capacitance performance across the operating temperature range of -55°C to 125°C. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Equivalent and substitute parts are identified based on matching or superior electrical and mechanical parameters, enabling design flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Specification
Capacitance	4.7 µF	Core electrical specification
Voltage Rating	35 V	Maximum rated voltage
Tolerance	±20%	Capacitance tolerance band
Package / Case	2917 (7343 Metric)	Physical form factor
ESR	700 mOhm	Equivalent series resistance
Operating Temperature	-55°C to 125°C	Functional temperature range
Mounting Type	Surface Mount	PCB assembly method
Type	Molded Tantalum	Capacitor construction

Substitute Part Grouping Explanation

Substitute parts for the T494D475M035AT are classified into two categories based on electrical parameter compatibility:

Upgrade Substitutes maintain or improve upon the original specifications while preserving core electrical characteristics. These parts feature identical or superior tolerance (±10% versus ±20%), matching voltage rating (35 V), identical capacitance (4.7 µF), and equivalent ESR (700 mOhm). Upgrade substitutes include T494D475K035AT (KEMET), TPSD475K035R0700 (KYOCERA AVX), and TPSD475K050R0700 (KYOCERA AVX with elevated 50 V rating).

Similar Substitutes maintain the same capacitance, voltage rating, tolerance, and package dimensions but differ in ESR or series designation. These parts include T491D475M035AT (KEMET, 1.5 Ohm ESR), 293D475X0035D2TE3 (Vishay Sprague, 1.3 Ohm ESR), and TAJD475M035RNJ (KYOCERA AVX, 1.5 Ohm ESR).

All substitute parts share the following critical parameters with the main part:

Capacitance: 4.7 µF
Voltage Rating: 35 V (or higher)
Package: 2917 (7343 Metric)
Mounting Type: Surface Mount
Operating Temperature: -55°C to 125°C
Type: Molded Tantalum
RoHS3 Compliance
MSL 1 (Unlimited)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Tolerance	Voltage	ESR	Package	Status	Inventory
T494D475M035AT	KEMET	T494	4.7 µF	±20%	35 V	700 mOhm	2917	Active	905 Pcs
T494D475K035AT	KEMET	T494	4.7 µF	±10%	35 V	700 mOhm	2917	Active	1638 Pcs
TPSD475K035R0700	KYOCERA AVX	TPS	4.7 µF	±10%	35 V	700 mOhm	2917	Active	1277 Pcs
TPSD475K050R0700	KYOCERA AVX	TPS	4.7 µF	±10%	50 V	700 mOhm	2917	Active	2058 Pcs
T491D475M035AT	KEMET	T491	4.7 µF	±20%	35 V	1.5 Ohm	2917	Active	1883 Pcs
293D475X0035D2TE3	Vishay Sprague	293D	4.7 µF	±20%	35 V	1.3 Ohm	2917	Active	2444 Pcs
TAJD475M035RNJ	KYOCERA AVX	TAJ	4.7 µF	±20%	35 V	1.5 Ohm	2917	Active	2243 Pcs

Engineering Selection Recommendations

For Direct Replacement with Improved Tolerance: T494D475K035AT (KEMET) provides direct substitution with tighter ±10% tolerance while maintaining identical voltage rating, capacitance, ESR, and package specifications. This part is ROHS3 compliant and Active status, with higher inventory availability (1638 Pcs).

For Cross-Manufacturer Substitution with Matching Specifications: TPSD475K035R0700 (KYOCERA AVX) offers equivalent electrical performance with ±10% tolerance, 700 mOhm ESR, and identical package dimensions. This part is ROHS3 compliant and Active status, suitable for applications requiring multi-source qualification.

For Elevated Voltage Margin Applications: TPSD475K050R0700 (KYOCERA AVX) provides the same 4.7 µF capacitance and ±10% tolerance with increased 50 V rating, maintaining 700 mOhm ESR and 2917 package compatibility. This part is ROHS3 compliant and Active status, with highest inventory (2058 Pcs).

For Alternative ESR Characteristics: T491D475M035AT (KEMET), 293D475X0035D2TE3 (Vishay Sprague), and TAJD475M035RNJ (KYOCERA AVX) maintain ±20% tolerance and 35 V rating with higher ESR values (1.3 to 1.5 Ohm). These parts are ROHS3 compliant and Active status, suitable for applications where ESR variation is acceptable.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and surface mount compatibility with the original T494D475M035AT.

Frequently Asked Questions (FAQ)

Q: Can T494D475K035AT replace T494D475M035AT directly? A: Yes. T494D475K035AT is a direct upgrade substitute with identical voltage (35 V), capacitance (4.7 µF), ESR (700 mOhm), and package (2917). The tolerance improves from ±20% to ±10%. Both parts are KEMET T494 series, ROHS3 compliant, and Active status.

Q: What is the difference between upgrade and similar substitutes? A: Upgrade substitutes (T494D475K035AT, TPSD475K035R0700, TPSD475K050R0700) maintain or improve tolerance to ±10% while preserving ESR at 700 mOhm. Similar substitutes (T491D475M035AT, 293D475X0035D2TE3, TAJD475M035RNJ) retain ±20% tolerance but feature higher ESR values (1.3 to 1.5 Ohm).

Q: Are all substitute parts compatible with the same PCB footprint? A: Yes. All substitute parts use the 2917 (7343 Metric) package with identical dimensions: 0.287" L × 0.169" W (7.30 mm × 4.30 mm) and maximum seated height of 0.122" (3.10 mm). Surface mount compatibility is maintained across all parts.

Q: Can TPSD475K050R0700 be used in place of T494D475M035AT? A: Yes. TPSD475K050R0700 provides the same 4.7 µF capacitance, ±10% tolerance, 700 mOhm ESR, and 2917 package. The 50 V rating exceeds the original 35 V specification, providing additional voltage margin. This part is ROHS3 compliant and Active status.

Q: What is the impact of ESR differences between substitute parts? A: ESR affects ripple current handling and thermal performance. The original T494D475M035AT specifies 700 mOhm ESR. Similar substitutes with 1.3 to 1.5 Ohm ESR have higher resistance but maintain the same capacitance and voltage rating. Selection depends on circuit ripple current requirements and thermal constraints.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original T494D475M035AT specifications.

Q: Which substitute offers the best inventory availability? A: TPSD475K050R0700 (KYOCERA AVX) has the highest inventory at 2058 Pcs, followed by 293D475X0035D2TE3 (Vishay Sprague) at 2444 Pcs. The original T494D475M035AT has 905 Pcs available.

Q: Can substitute parts from different manufacturers be mixed in the same design? A: Yes. All substitute parts maintain identical package dimensions, operating temperature range (-55°C to 125°C), and surface mount compatibility. Cross-manufacturer substitution is supported by matching electrical specifications and compliance certifications.

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