KEMET T520D157M006ASE055 Equivalent & Substitute Parts

Part Overview

The KEMET T520D157M006ASE055 is a 150 µF molded tantalum polymer capacitor rated at 6.3 V with 55 mOhm equivalent series resistance at 100 kHz, housed in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete product status. Due to its obsolete designation, direct replacement with active production equivalents is necessary for new designs and ongoing procurement requirements. The substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage - Rated	6.3 V
ESR (Equivalent Series Resistance)	55 mOhm @ 100 kHz
Type	Molded Tantalum Polymer
Package / Case	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max)	0.122" (3.10 mm)
Operating Temperature Range	-55°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C
Tolerance	±20%
Mounting Type	Surface Mount
Series	KO-CAP® T520

Substitute Part Grouping Explanation

Substitution eligibility for the T520D157M006ASE055 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Capacitance: 150 µF (±20% tolerance)
Voltage Rating: 6.3 V
ESR: 55 mOhm @ 100 kHz
Operating Temperature: -55°C ~ 105°C
Lifetime: 2000 Hrs @ 105°C

Mechanical Equivalence Requirements:

Package / Case: 2917 (7343 Metric)
Physical Dimensions: 0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max): 0.122" (3.10 mm)
Mounting Type: Surface Mount

All substitute parts listed maintain complete equivalence across these parameters. Substitutes differ only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete), with enhanced RoHS compliance in active variants.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100kHz	Package	Dimensions (L x W)	Height Max	Temp Range	Product Status	RoHS Status	Packaging Type	Inventory
T520D157M006ASE055	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Obsolete	RoHS Non-Compliant	-	1213 Pcs
T520D157M006ATE055	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel®	2788 Pcs
T520D157M006ATE0552478	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	1140 Pcs
T520D157M006ATE0557333	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	823 Pcs
T520D157M006ATE0557622	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	887 Pcs
T520D157M006ATE0557650	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	781 Pcs
T520D157M006ATE055Z147	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	746 Pcs
T520D157M006ATE055Z150	KEMET	150 µF	6.3 V	55 mOhm	2917	7.30 x 4.30 mm	3.10 mm	-55°C ~ 105°C	Active	ROHS3 Compliant	Tape & Reel (TR)	755 Pcs

Engineering Selection Recommendations

Primary Recommendation: T520D157M006ATE055

The T520D157M006ATE055 is the direct active production equivalent of the obsolete T520D157M006ASE055. This part maintains complete electrical and mechanical equivalence while offering ROHS3 compliance certification. The Cut Tape & Digi-Reel® packaging format provides flexibility for both manual assembly and automated reel-based production environments. With 2788 units in stock, this part offers the highest inventory availability among active substitutes.

Secondary Recommendations: Tape & Reel (TR) Variants

The following parts are functionally equivalent to T520D157M006ATE055 and differ only in packaging format (Tape & Reel versus Cut Tape & Digi-Reel®):

T520D157M006ATE0552478 (1140 Pcs)
T520D157M006ATE0557333 (823 Pcs)
T520D157M006ATE0557622 (887 Pcs)
T520D157M006ATE0557650 (781 Pcs)
T520D157M006ATE055Z147 (746 Pcs)
T520D157M006ATE055Z150 (755 Pcs)

These variants are suitable for high-volume automated assembly processes requiring continuous reel feeding. Selection among these parts should be based on procurement quantity requirements and assembly equipment compatibility.

Compliance Advantage:

All active substitute parts carry ROHS3 compliance certification, whereas the original T520D157M006ASE055 is RoHS non-compliant. This compliance upgrade eliminates regulatory restrictions for new product designs and international distribution.

Frequently Asked Questions (FAQ)

Q: Can T520D157M006ATE055 be used as a direct replacement for T520D157M006ASE055?

A: Yes. The T520D157M006ATE055 maintains complete electrical equivalence (150 µF, 6.3 V, 55 mOhm ESR) and mechanical equivalence (2917 package, identical dimensions and height). The primary differences are product status (Active versus Obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required.

Q: What is the difference between Cut Tape & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape & Digi-Reel® packaging (T520D157M006ATE055) provides flexibility for both manual pick-and-place operations and automated reel feeding. Tape & Reel (TR) variants are optimized for continuous automated assembly processes. Both formats contain the identical component; packaging selection depends on assembly methodology and equipment compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (T520D157M006ATE055 and all TR variants) carry ROHS3 compliance certification. The original obsolete part T520D157M006ASE055 is RoHS non-compliant.

Q: Do the substitute parts have the same operating temperature range?

A: Yes. All substitute parts maintain the identical operating temperature range of -55°C to 105°C with 2000 hours lifetime at 105°C, matching the original part specification.

Q: Can I mix packaging formats in the same assembly?

A: Yes. All substitute parts are electrically and mechanically identical. Mixing Cut Tape & Digi-Reel® and Tape & Reel formats in the same assembly presents no technical incompatibility. Mixing decisions should be based on procurement logistics and assembly process requirements.

Q: Which substitute part should I select for new product designs?

A: For new designs, T520D157M006ATE055 is the recommended primary choice due to its active product status, ROHS3 compliance, and highest inventory availability (2788 Pcs). This part eliminates obsolescence risk and regulatory compliance concerns for the product lifecycle.

Q: Are there any electrical performance differences between the substitute parts?

A: No. All substitute parts are parametrically equivalent with identical capacitance (150 µF), voltage rating (6.3 V), and ESR (55 mOhm @ 100 kHz). Electrical performance is identical across all variants.

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