TAJS105K020SNJ Equivalent & Substitute Parts

Part Overview

The TAJS105K020SNJ is a 1 µF molded tantalum capacitor rated for 20 V, manufactured by KYOCERA AVX in the TAJ series. This component is classified as Active and is ROHS3 compliant. The part is packaged in 1206 (3216 Metric) surface mount format with a 12Ohm equivalent series resistance (ESR). Substitute parts are necessary when the primary part is unavailable, when alternative ESR characteristics are required for specific circuit performance, or when sourcing from multiple manufacturers is required for supply chain resilience.

Substiute Parts

TAJS105K020SNJ

KYOCERA AVXIn Stock: 768TAJS105K020SNJ Datasheet

Current PartRFQ

TAJS105K020RNJ

KYOCERA AVXIn Stock: 2574TAJS105K020RNJ Datasheet

DirectRFQ

TPSA105K020R3000

KYOCERA AVXIn Stock: 3334TPSA105K020R3000 Datasheet

MFR RecommendedRFQ

293D105X9020A2TE3

Vishay SpragueIn Stock: 14161293D105X9020A2TE3 Datasheet

MFR RecommendedRFQ

593D105X9020A2TE3

Vishay SpragueIn Stock: 9474593D105X9020A2TE3 Datasheet

MFR RecommendedRFQ

T491A105K020AH

KEMETIn Stock: 3064T491A105K020AH Datasheet

MFR RecommendedRFQ

T491A105K020AT

KEMETIn Stock: 1249T491A105K020AT Datasheet

MFR RecommendedRFQ

TR3A105K020C3000

Vishay SpragueIn Stock: 3310TR3A105K020C3000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TAJS105K020SNJ is determined by strict adherence to the following parameters:

• Capacitance: 1 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 20 V (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Type: Molded Tantalum (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All substitute parts listed meet these criteria. Variations in ESR (Equivalent Series Resistance), height, and manufacturer series do not disqualify substitution when all primary electrical and mechanical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical specifications required for direct substitution with the TAJS105K020SNJ. Selection should be based on the following criteria:

RoHS Compliance: For applications requiring ROHS3 compliance, the following parts are suitable: TAJS105K020RNJ, TPSA105K020R3000, 293D105X9020A2TE3, 593D105X9020A2TE3, T491A105K020AT, and TR3A105K020C3000. The part T491A105K020AH is RoHS non-compliant and should be avoided in applications with RoHS requirements.

ESR Characteristics: The TAJS105K020SNJ has an ESR of 12Ohm. Substitute parts offer lower ESR values (3Ohm to 9Ohm), which may provide improved performance in high-frequency or low-impedance applications. TPSA105K020R3000 and TR3A105K020C3000 offer the lowest ESR at 3Ohm. Selection of lower-ESR alternatives should be confirmed compatible with circuit design requirements.

Physical Height: The TAJS105K020SNJ has a seated height of 0.047" (1.20mm). Most substitute parts have a seated height of 0.071" (1.80mm). For applications with strict height constraints, TAJS105K020RNJ maintains the original height specification.

Packaging Format: TAJS105K020RNJ, TPSA105K020R3000, 593D105X9020A2TE3, T491A105K020AH, and TR3A105K020C3000 are available in Tape & Reel (TR) format. 293D105X9020A2TE3 and T491A105K020AT are available in Cut Tape (CT) & Digi-Reel® format. Packaging selection depends on assembly process requirements.

Inventory Availability: 293D105X9020A2TE3 (Vishay Sprague) offers the highest inventory level at 14,100 pieces, followed by 593D105X9020A2TE3 at 9,441 pieces.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different ESR in my circuit?

A: ESR variation between 3Ohm and 12Ohm does not disqualify substitution based on the specified parameters. However, circuit performance may be affected in applications sensitive to impedance characteristics. Verify compatibility with your specific circuit design requirements.

Q: What is the difference between TAJS105K020SNJ and TAJS105K020RNJ?

A: Both parts are from KYOCERA AVX TAJ series with identical electrical specifications (1 µF, ±10%, 20 V, 12Ohm ESR). The primary difference is packaging designation. TAJS105K020RNJ has higher inventory availability (2522 vs 707 pieces).

Q: Are all substitute parts ROHS3 compliant?

A: No. T491A105K020AH is RoHS non-compliant. All other listed substitutes are ROHS3 compliant. Verify RoHS compliance requirements for your application before selection.

Q: Can I use parts with lower ESR as direct replacements?

A: Parts with lower ESR (3Ohm to 9Ohm) meet all specified electrical and mechanical parameters and are electrically compatible. Lower ESR may improve performance in certain applications but should be verified against circuit design specifications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is suitable for automated assembly processes using reel-fed equipment. Cut Tape (CT) & Digi-Reel® packaging is suitable for manual assembly or lower-volume production. Selection depends on your assembly process capabilities.

Q: Why do some substitute parts have different physical heights?

A: TAJS105K020SNJ has a seated height of 0.047" (1.20mm), while most substitutes are 0.071" (1.80mm). Height variation is within the allowable range for the 1206 package specification. Verify clearance in your PCB layout before selection if height is a constraint.

Q: Can I mix different manufacturers in the same assembly?

A: Yes. All listed parts meet identical electrical and mechanical specifications and are interchangeable. Using parts from multiple manufacturers (KYOCERA AVX, Vishay Sprague, KEMET) is acceptable for supply chain resilience.