Equivalent & Substitute Parts for T520B686M004ATE070

Part Overview

The T520B686M004ATE070 is a 68 µF molded tantalum polymer capacitor manufactured by KEMET in the KO-CAP® T520 series. This surface mount component operates at 4 V rated voltage with 70 mOhm equivalent series resistance at 100 kHz, housed in a 1411 (3528 Metric) package. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same package footprint and thermal specifications.

Substiute Parts

T520B686M004ATE070

KEMETIn Stock: 1082T520B686M004ATE070 Datasheet

Current PartRFQ

T520B686M006ATE070

KEMETIn Stock: 2473T520B686M006ATE070 Datasheet

UpgradeRFQ

T520T686M006ATE070

KEMETIn Stock: 1380T520T686M006ATE070 Datasheet

UpgradeRFQ

4TPB68M

Panasonic Electronic ComponentsIn Stock: 13084TPB68M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T520B686M004ATE070 are classified based on the following criteria:

Direct Equivalents (Same Electrical Rating): Parts maintaining identical capacitance (68 µF), voltage rating (4 V), ESR (70 mOhm @ 100 kHz), package (1411), and operating temperature range (-55°C to 105°C).

Upgrade Substitutes (Higher Voltage Rating): Parts with identical capacitance, ESR, package, and temperature range but rated at higher voltage (6.3 V). These provide enhanced voltage margin and are electrically compatible in 4 V applications.

Cross-Manufacturer Equivalents: Parts from alternative manufacturers meeting identical electrical and mechanical specifications within the same package footprint.

The substitution logic is based strictly on:

• Capacitance value (68 µF)
• Equivalent series resistance (70 mOhm @ 100 kHz)
• Package dimensions (1411 / 3528 Metric)
• Surface mount compatibility
• Operating temperature range (-55°C to 105°C)

Parameter Comparison

Engineering Selection Recommendations

T520B686M006ATE070 (KEMET): This upgrade substitute maintains all electrical parameters of the original part while providing 6.3 V rated voltage. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 3 (168 Hours) ratings. The higher voltage rating offers additional design margin in 4 V applications without altering footprint or thermal characteristics.

T520T686M006ATE070 (KEMET): This variant provides the same electrical specifications as T520B686M006ATE070 but with reduced seated height (1.20 mm versus 2.00 mm). Both are ROHS3 compliant and REACH unaffected. The lower profile accommodates space-constrained designs while maintaining electrical performance.

4TPB68M (Panasonic Electronic Components): This direct equivalent from Panasonic matches the original part's 4 V rating, 68 µF capacitance, and 70 mOhm ESR. It is ROHS3 compliant and housed in the same 1411 package. Height is 2.10 mm, within acceptable tolerance for the package class.

All substitute parts are Active status products with current manufacturing support and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can T520B686M006ATE070 replace T520B686M004ATE070 in a 4 V circuit?

A: Yes. The T520B686M006ATE070 is rated for 6.3 V and maintains identical capacitance (68 µF) and ESR (70 mOhm @ 100 kHz). Higher voltage rating components operate safely at lower applied voltages. Footprint and thermal characteristics are identical.

Q: What is the difference between T520B686M006ATE070 and T520T686M006ATE070?

A: Both parts share identical electrical specifications (68 µF, 6.3 V, 70 mOhm ESR) and package type (1411). The primary difference is seated height: T520B has 2.00 mm maximum height, while T520T has 1.20 mm maximum height. The T520T is suitable for applications with height constraints.

Q: Is 4TPB68M mechanically compatible with the original part?

A: Yes. The 4TPB68M is housed in the same 1411 (3528 Metric) package with identical length (3.50 mm) and width (2.80 mm) dimensions. Height is 2.10 mm, within acceptable variation for this package class. Surface mount compatibility is maintained.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. T520B686M004ATE070, T520B686M006ATE070, T520T686M006ATE070, and 4TPB68M are all ROHS3 compliant. All are REACH unaffected and carry EAR99 ECCN classification.

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

A: T520B686M004ATE070, T520B686M006ATE070, and T520T686M006ATE070 are rated MSL 3 (168 Hours). The 4TPB68M specification does not include MSL data in the provided parameters.

Q: Can these parts be used interchangeably in production?

A: Substitution depends on circuit voltage requirements and physical space constraints. For 4 V applications, T520B686M004ATE070 and 4TPB68M are direct equivalents. For designs allowing higher voltage rating, T520B686M006ATE070 and T520T686M006ATE070 provide additional margin. Height-constrained designs should specify T520T686M006ATE070.