T520B107M004ASE040 Equivalent & Substitute Parts

Part Overview

The T520B107M004ASE040 is a 100 µF molded tantalum polymer capacitor rated at 4 V with an equivalent series resistance (ESR) of 40 mOhm @ 100 kHz, manufactured by KEMET in the KO-CAP® T520 series. This component is packaged in a 1411 (3528 Metric) surface mount case with a maximum seated height of 2.00 mm.

The T520B107M004ASE040 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. The substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage - Rated	4 V
ESR (Equivalent Series Resistance)	40 mOhm @ 100 kHz
Type	Molded Tantalum Polymer
Package / Case	1411 (3528 Metric)
Size / Dimension	0.138" L x 0.110" W (3.50 mm x 2.80 mm)
Height - Seated (Max)	0.079" (2.00 mm)
Tolerance	±20%
Operating Temperature Range	-55°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the T520B107M004ASE040 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Capacitance: 100 µF (exact match required)
Voltage Rating: 4 V (exact match required)
ESR: 40 mOhm @ 100 kHz (exact match required)
Tolerance: ±20% (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Lifetime: 2000 Hrs @ 105°C (exact match required)

Mechanical Parameters:

Package / Case: 1411 (3528 Metric) (exact match required)
Size / Dimension: 0.138" L x 0.110" W (3.50 mm x 2.80 mm) (exact match required)
Height - Seated (Max): 0.079" (2.00 mm) (exact match required)
Mounting Type: Surface Mount (exact match required)
Moisture Sensitivity Level: 3 (168 Hours) (exact match required)

All substitute parts identified maintain these parameters without deviation. Substitution is based on functional and physical interchangeability within the specified electrical and thermal operating envelope.

Parameter Comparison

Parameter	T520B107M004ASE040	T520B107M004ATE040	T520B107M004ATE0402478	T520B107M004ATE0407627	T520B107M004ATE0408000
Manufacturer	KEMET	KEMET	KEMET	KEMET	KEMET
Series	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520
Capacitance	100 µF	100 µF	100 µF	100 µF	100 µF
Voltage - Rated	4 V	4 V	4 V	4 V	4 V
ESR (Equivalent Series Resistance)	40 mOhm @ 100 kHz	40 mOhm @ 100 kHz	40 mOhm @ 100 kHz	40 mOhm @ 100 kHz	40 mOhm @ 100 kHz
Type	Molded	Molded	Molded	Molded	Molded
Tolerance	±20%	±20%	±20%	±20%	±20%
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Package / Case	1411 (3528 Metric)	1411 (3528 Metric)	1411 (3528 Metric)	1411 (3528 Metric)	1411 (3528 Metric)
Size / Dimension	0.138" L x 0.110" W (3.50 mm x 2.80 mm)	0.138" L x 0.110" W (3.50 mm x 2.80 mm)	0.138" L x 0.110" W (3.50 mm x 2.80 mm)	0.138" L x 0.110" W (3.50 mm x 2.80 mm)	0.138" L x 0.110" W (3.50 mm x 2.80 mm)
Height - Seated (Max)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The T520B107M004ASE040 is classified as obsolete and carries RoHS non-compliant status. All identified substitute parts maintain complete electrical and mechanical equivalence while offering active product status and ROHS3 compliance.

Primary Substitute: T520B107M004ATE040 is the direct manufacturer equivalent with active product status and improved compliance certifications. This part is available in Tape & Reel (TR) packaging and is the preferred selection for new designs and production applications.

Parametric Equivalents: T520B107M004ATE0402478, T520B107M004ATE0407627, and T520B107M004ATE0408000 are parametric equivalents that maintain identical electrical and mechanical specifications. These parts differ only in manufacturing lot codes or internal tracking designations and are functionally interchangeable with the primary substitute and the original part.

All substitute parts are suitable for direct replacement in existing designs without circuit modification or re-qualification, provided that the original design specifications align with the stated electrical and thermal parameters.

Frequently Asked Questions (FAQ)

Q: Can T520B107M004ATE040 be used as a direct replacement for T520B107M004ASE040?

A: Yes. T520B107M004ATE040 maintains identical capacitance (100 µF), voltage rating (4 V), ESR (40 mOhm @ 100 kHz), package dimensions (1411 / 3528 Metric), and operating temperature range (-55°C ~ 105°C). The parts are electrically and mechanically interchangeable.

Q: What is the difference between T520B107M004ATE040 and the parametric equivalents T520B107M004ATE0402478, T520B107M004ATE0407627, and T520B107M004ATE0408000?

A: These parts are parametrically identical across all electrical and mechanical specifications. The suffix variations (0402478, 0407627, 0408000) represent internal manufacturer lot codes or tracking designations and do not affect functional performance or compatibility.

Q: Why is the original part T520B107M004ASE040 marked as obsolete?

A: Product obsolescence is determined by the manufacturer based on production discontinuation. The substitute parts listed maintain active status and are recommended for ongoing production and design applications.

Q: Are there any compliance differences between the original part and the substitutes?

A: Yes. The original T520B107M004ASE040 is RoHS non-compliant, while all substitute parts (T520B107M004ATE040, T520B107M004ATE0402478, T520B107M004ATE0407627, T520B107M004ATE0408000) are ROHS3 compliant. This represents an improvement in environmental and regulatory compliance.

Q: What packaging options are available for the substitute parts?

A: The substitute parts are available in Tape & Reel (TR) packaging, which is standard for surface mount production environments. The original part was supplied in bulk packaging format.

Q: Can these parts be used in applications requiring RoHS compliance?

A: Yes. All substitute parts carry ROHS3 compliance certification and are suitable for applications with RoHS requirements. The original obsolete part does not meet RoHS standards.

Q: Are the electrical performance characteristics identical across all substitute parts?

A: Yes. All substitute parts maintain identical capacitance (100 µF), voltage rating (4 V), ESR (40 mOhm @ 100 kHz), tolerance (±20%), operating temperature range (-55°C ~ 105°C), and lifetime rating (2000 Hrs @ 105°C).

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the original and all substitutes, carry MSL 3 (168 Hours) rating. This requires controlled storage and handling conditions during manufacturing and assembly.

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