T495B475M025ATE700 Equivalent & Substitute Parts

Part Overview

The T495B475M025ATE700 is a 4.7 µF molded tantalum capacitor manufactured by KEMET, rated for 25 V operation with ±20% capacitance tolerance. This surface mount component is housed in a 1411 (3528 Metric) package and features an ESR of 700 mOhm @ 100 kHz. The part is Active in product status and ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified for applications requiring alternative tolerance specifications, ESR characteristics, or manufacturer sourcing options while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage Rating	25 V
Tolerance	±20%
Package / Case	1411 (3528 Metric)
ESR @ 100 kHz	700 mOhm
Operating Temperature Range	-55°C ~ 125°C
Lifetime @ 125°C	2000 Hrs
Mounting Type	Surface Mount
Physical Dimensions	0.138" L x 0.110" W (3.50 mm x 2.80 mm)
Height - Seated (Max)	0.083" (2.10 mm)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the T495B475M025ATE700 is determined by the following critical parameters: capacitance value (4.7 µF), voltage rating (25 V), package type (1411 / 3528 Metric), mounting configuration (surface mount), and operating temperature range (-55°C ~ 125°C). Parts are grouped as equivalent when they maintain these core specifications while allowing variation in tolerance (±10% or ±20%), ESR characteristics (700 mOhm to 1.5 Ohm @ 100 kHz), and manufacturer identity. All substitute parts listed are molded tantalum capacitors with identical physical dimensions and seating height, ensuring mechanical compatibility in PCB layouts. Tolerance and ESR variations reflect different performance grades within the same functional category and do not affect basic substitutability for general purpose applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	ESR @ 100 kHz	Package / Case	Dimensions (L x W)	Height (Max)	Operating Temp Range	Lifetime @ 125°C	RoHS Status	MSL Rating
T495B475M025ATE700	KEMET	4.7 µF	±20%	25 V	700 mOhm	1411 (3528 Metric)	0.138" x 0.110" (3.50 mm x 2.80 mm)	0.083" (2.10 mm)	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	1 (Unlimited)
T494B475K025AT	KEMET	4.7 µF	±10%	25 V	1 Ohm	1411 (3528 Metric)	0.138" x 0.110" (3.50 mm x 2.80 mm)	0.083" (2.10 mm)	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	1 (Unlimited)
T495B475K025ATE700	KEMET	4.7 µF	±10%	25 V	700 mOhm	1411 (3528 Metric)	0.138" x 0.110" (3.50 mm x 2.80 mm)	0.083" (2.10 mm)	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	1 (Unlimited)
TCKIE475BT	Cal-Chip Electronics, Inc.	4.7 µF	±10%	25 V	1.5 Ohm	1411 (3528 Metric)	0.138" x 0.110" (3.50 mm x 2.80 mm)	0.083" (2.10 mm)	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	1 (Unlimited)
TCMIE475BT	Cal-Chip Electronics, Inc.	4.7 µF	±20%	25 V	1.5 Ohm	1411 (3528 Metric)	0.138" x 0.110" (3.50 mm x 2.80 mm)	0.083" (2.10 mm)	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original T495B475M025ATE700. Selection between substitutes depends on tolerance and ESR requirements specific to the application circuit.

T495B475K025ATE700 (KEMET) provides tighter capacitance tolerance (±10% versus ±20%) while maintaining identical ESR (700 mOhm @ 100 kHz) and all other electrical specifications. This part is suitable for applications requiring improved capacitance accuracy without ESR modification.

T494B475K025AT (KEMET) offers ±10% tolerance with slightly elevated ESR (1 Ohm @ 100 kHz). This part is suitable for applications where tolerance improvement is prioritized and marginal ESR increase is acceptable.

TCKIE475BT and TCMIE475BT (Cal-Chip Electronics, Inc.) provide alternative manufacturer sourcing with ±10% and ±20% tolerance options respectively, both featuring 1.5 Ohm ESR @ 100 kHz. These parts are suitable for applications where manufacturer diversification or higher ESR tolerance is required. TCMIE475BT matches the original tolerance specification (±20%) while TCKIE475BT provides tighter tolerance (±10%).

All substitute parts share identical package dimensions, seating height, operating temperature range, and lifetime specifications, ensuring direct mechanical and thermal compatibility in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can T495B475K025ATE700 directly replace T495B475M025ATE700?

A: Yes. Both parts share identical capacitance (4.7 µF), voltage rating (25 V), package type (1411 / 3528 Metric), ESR (700 mOhm @ 100 kHz), and physical dimensions. The primary difference is capacitance tolerance: T495B475K025ATE700 specifies ±10% versus ±20% for the original part. This represents improved accuracy with no other electrical or mechanical changes.

Q: What is the difference between KEMET and Cal-Chip Electronics substitute parts?

A: KEMET parts (T494B475K025AT and T495B475K025ATE700) and Cal-Chip Electronics parts (TCKIE475BT and TCMIE475BT) are different manufacturers offering equivalent specifications. KEMET parts feature lower ESR values (700 mOhm to 1 Ohm @ 100 kHz), while Cal-Chip parts specify 1.5 Ohm ESR. All maintain identical capacitance, voltage rating, package, and physical dimensions. Manufacturer selection depends on supply chain requirements and ESR performance criteria.

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

A: Yes. All substitute parts are housed in the 1411 (3528 Metric) package with identical physical dimensions (0.138" L x 0.110" W / 3.50 mm x 2.80 mm) and seating height (0.083" / 2.10 mm). Direct PCB footprint compatibility is confirmed for all listed substitutes.

Q: What does the tolerance specification (±20% versus ±10%) mean for circuit performance?

A: Tolerance specifies the allowable deviation of actual capacitance from the nominal 4.7 µF value. ±20% tolerance allows capacitance between 3.76 µF and 5.64 µF. ±10% tolerance restricts the range to 4.23 µF and 5.17 µF. Applications requiring tighter capacitance control should specify ±10% parts (T495B475K025ATE700, T494B475K025AT, or TCKIE475BT).

Q: How does ESR (Equivalent Series Resistance) affect part selection?

A: ESR influences ripple current handling, noise filtering, and transient response characteristics. The original part specifies 700 mOhm @ 100 kHz. Substitute parts range from 700 mOhm (T495B475K025ATE700) to 1.5 Ohm (TCKIE475BT and TCMIE475BT). Lower ESR values provide superior high-frequency performance. Applications sensitive to ESR should select parts with matching or lower ESR specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the regulatory status of the original T495B475M025ATE700.

Q: What is the MSL (Moisture Sensitivity Level) rating and why is it important?

A: All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Components may be stored and handled without special moisture control measures, simplifying logistics and inventory management.

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