T520B686M006ASE070 Equivalent & Substitute Parts

Part Overview

The T520B686M006ASE070 is a 68 µF molded tantalum polymer capacitor rated at 6.3 V with 70 mOhm equivalent series resistance (ESR) at 100 kHz, manufactured by KEMET in the KO-CAP® T520 series. This component is classified as obsolete, with 731 pieces currently available in stock. Due to its obsolete status, direct replacement with active production alternatives is necessary for new designs and ongoing procurement requirements. Substitute parts maintain identical electrical specifications and mechanical form factors while offering active product status and improved compliance certifications.

Substiute Parts

T520B686M006ASE070

KEMETIn Stock: 761T520B686M006ASE070 Datasheet

Current PartRFQ

T520B686M006ATE070

KEMETIn Stock: 2473T520B686M006ATE070 Datasheet

DirectRFQ

T520T686M006ATE070

KEMETIn Stock: 1380T520T686M006ATE070 Datasheet

DirectRFQ

T520B686M006ATE0707622

KEMETIn Stock: 1114T520B686M006ATE0707622 Datasheet

Parametric EquivalentRFQ

T55B686M6R3C0070

Vishay SpragueIn Stock: 2831T55B686M6R3C0070 Datasheet

DirectRFQ

TCJB686M006R0070

KYOCERA AVXIn Stock: 3706TCJB686M006R0070 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into three categories based on substitution relationship type and parameter alignment:

Direct Manufacturer Substitutes (KEMET KO-CAP® T520 Series) These parts maintain identical electrical and mechanical specifications with the main part. Substitution is based on matching capacitance (68 µF), voltage rating (6.3 V), ESR (70 mOhm @ 100 kHz), package (1411/3528 Metric), operating temperature range (-55°C to 105°C), and tolerance (±20%). Differences exist only in packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete).

Parametric Equivalent (KEMET KO-CAP® T520 Series) This part matches all electrical parameters and package specifications but may include internal manufacturing variations indicated by extended part number suffixes. Electrical performance remains identical across capacitance, voltage, ESR, temperature range, and tolerance specifications.

Cross-Manufacturer Direct Equivalent (Vishay Sprague vPolyTan™ T55 Series) The T55B686M6R3C0070 provides equivalent electrical performance with identical capacitance, voltage, ESR, package, and tolerance. Height-seated dimension differs slightly (2.10 mm vs. 2.00 mm), which remains within typical PCB assembly tolerances for surface-mount components.

Similar Manufacturer Part (KYOCERA AVX TCJ Series) The TCJB686M006R0070 matches electrical specifications (68 µF, 6.3 V, 70 mOhm ESR, ±20% tolerance) and package footprint (1210/3528 Metric). This part offers extended operating temperature capability (-55°C to 125°C) and extended lifetime rating (2000 Hrs @ 125°C), with height-seated dimension of 2.10 mm.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: T520B686M006ATE070 This KEMET KO-CAP® T520 part is the direct active-production equivalent of the obsolete T520B686M006ASE070. It maintains identical electrical specifications (68 µF, 6.3 V, 70 mOhm ESR), mechanical dimensions (2.00 mm height), and package format (1411/3528 Metric). The part is ROHS3 compliant and currently in active production with 2400 pieces in stock. This selection eliminates obsolescence risk while preserving design compatibility.

Secondary Recommendation: T520B686M006ATE0707622 This KEMET parametric equivalent maintains all electrical and mechanical specifications identical to the main part. It is ROHS3 compliant and active in production with 1066 pieces available. The extended part number suffix indicates internal manufacturing variation with no impact on electrical performance.

Alternative for Height-Constrained Designs: T520T686M006ATE070 When PCB assembly height constraints require reduced component profile, this KEMET part offers 1.20 mm seated height (versus 2.00 mm standard) while maintaining all electrical specifications. It is ROHS3 compliant and active in production with 1298 pieces in stock. Verify PCB layout compatibility before selection.

Cross-Manufacturer Option: T55B686M6R3C0070 The Vishay Sprague vPolyTan™ T55 series part provides equivalent electrical performance with ROHS3 compliance and active production status. Height-seated dimension is 2.10 mm, which remains within standard PCB assembly tolerances. This option offers supply diversification with 2781 pieces in stock.

Extended Temperature Application: TCJB686M006R0070 The KYOCERA AVX TCJ series part extends operating temperature capability to 125°C with 2000-hour lifetime rating at that temperature. This part is suitable for applications requiring enhanced thermal performance. Package footprint remains compatible (1210/3528 Metric) with height-seated dimension of 2.10 mm. ROHS3 compliant with 3646 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Can T520B686M006ATE070 be used as a direct replacement for T520B686M006ASE070? A: Yes. Both parts share identical electrical specifications (68 µF, 6.3 V, 70 mOhm ESR), mechanical dimensions (1411 package, 2.00 mm height), and operating temperature range (-55°C to 105°C). The primary difference is product status: T520B686M006ASE070 is obsolete while T520B686M006ATE070 is active in production with ROHS3 compliance.

Q: What is the difference between T520B686M006ATE070 and T520T686M006ATE070? A: Both parts are KEMET KO-CAP® T520 series with identical electrical specifications. The primary difference is seated height: T520B686M006ATE070 has 2.00 mm height while T520T686M006ATE070 has 1.20 mm height. The "B" and "T" designations in the part number indicate manufacturer size codes. Select based on PCB assembly height requirements.

Q: Is the Vishay Sprague T55B686M6R3C0070 fully compatible with the KEMET T520B686M006ASE070? A: Yes, for electrical performance. Both parts have identical capacitance (68 µF), voltage rating (6.3 V), ESR (70 mOhm @ 100 kHz), package footprint (1411/3528 Metric), and operating temperature range (-55°C to 105°C). Height-seated dimension differs by 0.10 mm (2.10 mm vs. 2.00 mm), which is within standard PCB assembly tolerances. Verify with your PCB layout if height clearance is critical.

Q: Why does TCJB686M006R0070 have a different package designation (1210 vs. 1411)? A: Both designations refer to the same 3528 Metric footprint dimensions (0.138" L x 0.110" W / 3.50 mm x 2.80 mm). The 1210 and 1411 codes are alternative naming conventions used by different manufacturers. Footprint compatibility is confirmed; verify height clearance (2.10 mm) with your PCB design.

Q: Can I use TCJB686M006R0070 in applications requiring -55°C to 105°C operation? A: Yes. TCJB686M006R0070 is rated for -55°C to 125°C operation, which exceeds the -55°C to 105°C requirement. This part is suitable for the specified temperature range and offers additional thermal margin for extended-temperature applications.

Q: What does the extended suffix "07622" in T520B686M006ATE0707622 indicate? A: The extended suffix indicates internal manufacturing variation or date code tracking. All electrical and mechanical specifications remain identical to T520B686M006ATE070. This part is a parametric equivalent with no functional difference in circuit performance.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All active-production substitute parts listed (T520B686M006ATE070, T520T686M006ATE070, T520B686M006ATE0707622, T55B686M6R3C0070, and TCJB686M006R0070) are ROHS3 compliant. The original T520B686M006ASE070 is RoHS non-compliant due to its obsolete status.

Q: Which substitute part has the highest inventory availability? A: TCJB686M006R0070 (KYOCERA AVX) has the highest inventory with 3646 pieces in stock, followed by T520B686M006ATE070 (KEMET) with 2400 pieces and T55B686M6R3C0070 (Vishay Sprague) with 2781 pieces.