T520V157M006ASE045 Equivalent & Substitute Parts

Part Overview

The T520V157M006ASE045 is a 150 µF molded tantalum polymer capacitor rated at 6.3 V, manufactured by KEMET in the KO-CAP® T520 series. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design support and procurement. The part features a 2917 (7343 Metric) surface mount package with 45 mOhm equivalent series resistance at 100 kHz, suitable for general-purpose applications requiring stable capacitance performance across the operating temperature range of -55°C to 105°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	T520V157M006ASE045
Manufacturer	KEMET
Series	KO-CAP® T520
Capacitance	150 µF
Tolerance	±20%
Voltage - Rated	6.3 V
Type	Molded
ESR @ 100 kHz	45 mOhm
Operating Temperature	-55°C to 105°C
Lifetime @ 105°C	2000 Hours
Mounting Type	Surface Mount
Package / Case	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max)	0.075" (1.90 mm)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the T520V157M006ASE045 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 150 µF
Voltage Rating: 6.3 V
Tolerance: ±20%
ESR: 45 mOhm @ 100 kHz
Operating Temperature Range: -55°C to 105°C
Lifetime: 2000 Hours @ 105°C
Package / Case: 2917 (7343 Metric)
Physical Dimensions: 0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max): 0.075" (1.90 mm)
Mounting Type: Surface Mount
Type: Molded
Series: KO-CAP® T520

All substitute parts listed maintain identical electrical and mechanical specifications. Variations in part numbering suffixes (such as Z147, Z150, Z160, and 4539, 7333) represent manufacturing date codes, tape reel configurations, or internal KEMET tracking designations that do not alter functional performance or compatibility.

Parameter Comparison

Parameter	T520V157M006ASE045	T520V157M006ATE045	T520V157M006AHE045	T520V157M006ATE0454539	T520V157M006ATE0457333	T520V157M006ATE045Z147	T520V157M006ATE045Z150	T520V157M006ATE045Z160
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF	150 µF	150 µF	150 µF
Voltage - Rated	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%
ESR @ 100 kHz	45 mOhm	45 mOhm	45 mOhm	45 mOhm	45 mOhm	45 mOhm	45 mOhm	45 mOhm
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Package / Case	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)	0.075" (1.90 mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Type	Molded	Molded	Molded	Molded	Molded	Molded	Molded	Molded
Series	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520	KO-CAP® T520
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Packaging	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	Not specified
Inventory Status	2200 Pcs New Original In Stock	3300 Pcs New Original In Stock	907 Pcs New Original In Stock	910 Pcs New Original In Stock	910 Pcs New Original In Stock	994 Pcs New Original In Stock	612 Pcs New Original In Stock	891 Pcs New Original In Stock

Engineering Selection Recommendations

Primary Recommendation: T520V157M006ATE045

The T520V157M006ATE045 is the direct active equivalent of the obsolete T520V157M006ASE045. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The higher inventory level (3300 units) ensures procurement availability. This part is supplied in Tape & Reel packaging, which is standard for automated assembly operations.

Secondary Recommendations: T520V157M006ATE0454539 and T520V157M006ATE0457333

Both parts are parametrically equivalent with ROHS3 compliance and active status. The numeric suffixes (4539 and 7333) represent manufacturing date codes or internal tracking designations that do not affect functional performance. These alternatives are suitable when primary inventory is constrained.

Tertiary Recommendations: T520V157M006ATE045Z147, T520V157M006ATE045Z150, T520V157M006ATE045Z160

These parts carry the Z-series suffix designations, which indicate specific manufacturing batches or tape reel configurations. All maintain identical electrical and mechanical parameters. Selection among these variants should be based on procurement availability and internal supply chain requirements.

Alternative with Different Compliance Profile: T520V157M006AHE045

The T520V157M006AHE045 is parametrically equivalent but carries RoHS non-compliant status, matching the original part's compliance profile. This option is applicable only in applications where RoHS compliance is not a design requirement. Inventory availability is lower (907 units) compared to ROHS3-compliant alternatives.

All substitute parts are manufactured by KEMET within the KO-CAP® T520 series and are direct functional replacements requiring no circuit design modifications.

Frequently Asked Questions (FAQ)

Q: Can T520V157M006ATE045 be used as a direct replacement for T520V157M006ASE045?

A: Yes. The T520V157M006ATE045 is a direct equivalent with identical capacitance (150 µF), voltage rating (6.3 V), ESR (45 mOhm @ 100 kHz), operating temperature range (-55°C to 105°C), package dimensions (2917 / 7343 Metric), and all other electrical and mechanical parameters. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Bulk).

Q: What do the suffix codes (Z147, Z150, Z160, 4539, 7333) represent?

A: These suffixes are manufacturing date codes, tape reel batch identifiers, or internal KEMET tracking designations. They do not alter electrical performance, mechanical compatibility, or functional characteristics. All parts with these suffixes maintain identical specifications for capacitance, voltage, ESR, temperature range, and package dimensions.

Q: Is there a difference in performance between ROHS3-compliant and RoHS non-compliant versions?

A: No. RoHS compliance status reflects manufacturing process and material sourcing standards, not electrical or mechanical performance. The T520V157M006ATE045 (ROHS3 compliant) and T520V157M006AHE045 (RoHS non-compliant) deliver identical capacitance, voltage, ESR, and thermal characteristics. Selection should be based on design compliance requirements.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for automated surface mount assembly. The original T520V157M006ASE045 was supplied in bulk packaging, but this represents a packaging format difference only, not a functional difference.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All substitute parts share identical 2917 (7343 Metric) package dimensions, surface mount footprint, and lead spacing. No PCB layout modifications are required. Automated pick-and-place equipment can process all variants without adjustment.

Q: What is the moisture sensitivity level, and does it affect storage?

A: All parts carry MSL 3 (168 Hours) rating. This indicates the component can be exposed to ambient conditions (30°C, 60% relative humidity) for up to 168 hours before soldering. Storage in dry conditions or moisture-barrier packaging extends shelf life and maintains performance.

Q: Which substitute part offers the best procurement availability?

A: The T520V157M006ATE045 offers the highest inventory level at 3300 units in stock, followed by T520V157M006ATE045Z147 (994 units) and T520V157M006ATE0454539 / T520V157M006ATE0457333 (910 units each). Inventory levels should be verified at time of procurement.

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