TAJS105M020Y Equivalent & Substitute Parts

Part Overview

The TAJS105M020Y is a 1 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 20 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when electrical parameters (capacitance, voltage rating, tolerance) and mechanical specifications (package, mounting type, dimensions) align within acceptable tolerances for the application.

Substiute Parts

TAJS105M020Y

KYOCERA AVXIn Stock: 1257TAJS105M020Y Datasheet

Current PartRFQ

TAJS105K020RNJ

KYOCERA AVXIn Stock: 2574TAJS105K020RNJ Datasheet

UpgradeRFQ

TAJA105M020RNJ

KYOCERA AVXIn Stock: 2037TAJA105M020RNJ Datasheet

MFR RecommendedRFQ

TPSA105M020R3000

KYOCERA AVXIn Stock: 2605TPSA105M020R3000 Datasheet

MFR RecommendedRFQ

293D105X0020A2TE3

Vishay SpragueIn Stock: 3416293D105X0020A2TE3 Datasheet

MFR RecommendedRFQ

T491A105M020AT

KEMETIn Stock: 4885T491A105M020AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following parameters:

• Capacitance: Must be 1 µF
• Voltage Rating: Must be 20 V or higher
• Package / Case: Must be 1206 (3216 Metric)
• Mounting Type: Must be Surface Mount
• Type: Must be Molded Tantalum
• Operating Temperature Range: Must support -55°C ~ 125°C
• RoHS Status: Must be ROHS3 Compliant
• Moisture Sensitivity Level: Must be MSL 1

Tolerance variations (±20% vs. ±10%) are permitted substitutions when all other parameters match. Equivalent Series Resistance (ESR) variations are acceptable within the molded tantalum capacitor category. Substitute parts are grouped by manufacturer and series designation while maintaining electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original TAJS105M020Y specification. Selection among substitutes should be based on:

Tolerance Requirements: TAJS105K020RNJ provides ±10% tolerance for applications requiring tighter capacitance control compared to the ±20% tolerance of the main part.

ESR Considerations: TPSA105M020R3000 offers the lowest ESR at 3 Ohm, suitable for applications sensitive to impedance characteristics. TAJA105M020RNJ and T491A105M020AT provide 9 Ohm ESR, while 293D105X0020A2TE3 provides 8.4 Ohm ESR.

Height Constraints: TAJS105K020RNJ maintains the original seated height of 0.047" (1.20mm). All other substitutes have a maximum seated height of 0.071" (1.80mm) and must be evaluated for PCB layout compatibility.

Manufacturer Availability: KEMET T491A105M020AT offers the highest inventory level at 4803 Pcs. Vishay Sprague 293D105X0020A2TE3 provides 3400 Pcs. KYOCERA AVX alternatives range from 1154 to 2522 Pcs.

Frequently Asked Questions (FAQ)

Q: Can TAJS105K020RNJ replace TAJS105M020Y? A: Yes. TAJS105K020RNJ is a direct substitute with identical electrical parameters (1 µF, 20 V, 1206 package, surface mount) and the same ESR (12 Ohm). The tolerance difference (±10% vs. ±20%) represents an upgrade in capacitance accuracy. Seated height remains 0.047" (1.20mm).

Q: What is the difference between TAJA105M020RNJ and TAJS105M020Y? A: Both are 1 µF, 20 V, 1206 molded tantalum capacitors with ±20% tolerance from KYOCERA AVX. TAJA105M020RNJ has lower ESR (9 Ohm vs. 12 Ohm) and greater seated height (0.071" vs. 0.047"). Verify PCB clearance before substitution.

Q: Are cross-manufacturer substitutes acceptable? A: Yes. Vishay Sprague 293D105X0020A2TE3 and KEMET T491A105M020AT meet all electrical and mechanical requirements (1 µF, 20 V, 1206 package, -55°C ~ 125°C, ROHS3 compliant, MSL 1). Verify procurement and supply chain requirements for your application.

Q: Does ESR variation affect circuit performance? A: ESR differences (3 Ohm to 12 Ohm) are within the molded tantalum capacitor specification range. Applications with specific impedance requirements should select parts accordingly. TPSA105M020R3000 (3 Ohm) is suitable for low-impedance applications; TAJS105M020Y (12 Ohm) is suitable for general-purpose applications.

Q: Can I use a 35 V rated capacitor instead of 20 V? A: Voltage derating is not addressed in the provided substitute list. Only parts rated for 20 V are listed as equivalent substitutes.